Unnamed: 0 int64 0 18.1k | language stringclasses 4
values | creator stringlengths 2 137 | title stringlengths 2 217 | subject stringclasses 15
values | keyword stringlengths 10 597 | identifier stringlengths 82 244 | description stringlengths 2 2.3k | date stringlengths 14 14 |
|---|---|---|---|---|---|---|---|---|
16,100 | ['eng'] | ['Yang, H S', 'Lee, B H'] | ['Noncovariant local symmetry in abelian gauge theories'] | ['Particle Physics - Theory'] | ['gauge field theory, U(1)', 'symmetry, Lorentz', 'transformation, Becchi-Rouet-Stora', 'charge, conservation law', 'constraint', 'phase space'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502081'] | ['We find non-covariant local symmetries in the Abelian gauge theories. The Noether charges generating these symmetries are nilpotent as BRST charge and they impose constraints on the physical states.'] | ['1995-02-15'] |
16,101 | ['eng'] | ['Kawano, T'] | ['Weyl anomalies of strings in temporal gauge'] | ['Particle Physics - Theory'] | ['string model', 'quantum gravity', 'dimension, 2', 'temporal gauge', 'path integral', 'anomaly, Weyl'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9504017'] | ['We consider two-dimensional quantum gravity coupled to matter in the temporal gauge, using the Polyakov path integral. We show that the integration over the metric can be explicitly performed under some plausible assumptions. We also discuss that the critical dimensions in string theory may not be determined in the t... | ['1995-04-10'] |
16,102 | ['eng'] | ['Kaplunovsky, V S', 'Louis, J'] | ['On gauge couplings in string theory'] | ['Particle Physics - Theory'] | ['string model', 'effective action', 'coupling constant, gauge', 'gauge, coupling constant', 'vacuum state', 'supersymmetry', 'moduli space', 'symmetry breaking', 'group theory, representation', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502077'] | ['We investigate the field dependence of the gauge couplings of N=1 string vacua from the point of view of the low energy effective quantum field theory. We find that field-theoretical considerations severely constrain the form of the string loop corrections; in particular, the dilaton dependence of the gauge couplings... | ['1995-02-14'] |
16,103 | ['eng'] | ['Dilkes, F A', 'McKeon, D G C'] | ['A massive renormalizable abelian gauge theory in 2+1 dimensions'] | ['Particle Physics - Theory'] | ['gauge field theory, U(1)', 'gauge field theory, massive', 'massive, gauge field theory', 'fermion', 'dimension, 3', 'effective action', 'perturbation theory, higher-order', 'renormalization', 'Hamiltonian formalism'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502075'] | ['The standard formulation of a massive Abelian vector field in 2+1 dimensions involves a Maxwell kinetic term plus a Chern-Simons mass term; in its place we consider a Chern-Simons kinetic term plus a Stückelberg mass term. In this latter model, we still have a massive vector field, but now the interaction with a char... | ['1995-02-14'] |
16,104 | ['eng'] | ['Lo, H K'] | ['Elusive order parameters for non-abelian gauge theories'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'Wilson loop', 'string model', 'symmetry breaking', 'critical phenomena'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502079'] | ['In this Letter, we construct a set of order parameters for non-Abelian gauge theories which probe directly the unbroken group and are free of the deficiencies caused by quantum fluctuations and gauge fixing which have plagued all previous attempts. These operators can be used to map out the phase diagram of a non-Abe... | ['1995-02-14'] |
16,105 | ['eng'] | ['Kim, W T', 'Lee, J'] | ['ADM, Bondi mass, and energy conservation in two-dimensional dilaton gravities'] | ['Particle Physics - Theory'] | ['quantum gravity', 'field theory, dilaton', 'dimension, 2', 'tensor, energy-momentum', 'mass', 'energy, conservation law', 'boundary condition'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502078'] | ['We show how a stress-energy pseudotensor can be constructed in two-dimensional dilatonic gravity theories (classical, CGHS and RST) and derive the expression for the ADM mass in these theories from it. We define the Bondi mass for these theories by using the pseudotensor formalism. The resulting expression is the gen... | ['1995-02-14'] |
16,106 | ['eng'] | ['Lo, H K'] | ['Aharonov-Bohm order parameters for non-abelian gauge theories'] | ['Particle Physics - Theory'] | ['gauge field theory, SU(N)', 'Aharonov-Bohm effect', 'charge, quantization', 'symmetry breaking', 'flux, magnetic', 'magnetic, flux', 'critical phenomena'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502080'] | ["The Aharonov-Bohm effect has been invoked to probe the phase structure of a gauge theory. Yet in the case of non-Abelian gauge theories, it proves difficult to formulate a general procedure that unambiguously specifies the realization of the gauge symmetry, e.g. the unbroken subgroup. In this paper, we propose a set ... | ['1995-02-14'] |
16,107 | ['eng'] | ['Kondo, K I'] | ['Thirring model as a gauge theory'] | ['Particle Physics - Theory'] | ['Thirring model', 'gauge field theory', 'invariance, Becchi-Rouet-Stora', 'field theory, Euclidean', 'vacuum polarization', 'effective potential', 'symmetry breaking, chiral', 'mass generation', 'Dyson-Schwinger equation'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502070'] | ['We formulate the Thirring model with four-fermion interaction of the current-current type as a gauge theory and identify it with a gauge-fixed version of the corresponding gauge theory. Based on this formalism, we study the chiral symmetry breaking of the D-dimensional Thirring model (2<D<4) with the N flavors of 4-c... | ['1995-02-14'] |
16,108 | ['eng'] | ['Montonen, C'] | ['The many-anyon problem'] | ['Particle Physics - Theory'] | ['lectures', 'postulated particle, anyon', 'many-body problem', 'quantum mechanics', 'symmetry', 'spin, statistics', 'statistics, spin', 'gauge field theory, U(1)', 'Chern-Simons term'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502071'] | ['Lectures presented at the VI Mexican School of Particles and Fields, Villahermosa, 3-7 October, 1994. Contents: 1. Introduction 2. The Symmetry Group Approach to the Quantum Mechanics of Identical Particles 3. How Come Anyons? 4. The Transmutation of Statistics into a Topological Interaction 5. The Chern-Simons Actio... | ['1995-02-14'] |
16,109 | ['eng'] | ['Ceresole, Anna T', "D'Auria, R", 'Ferrara, Sergio', 'Van Proeyen, A'] | ['Duality transformations in supersymmetric Yang-Mills theories coupled to supergravity'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'duality, transformation', 'supergravity', 'transformation, symplectic', 'central charge', 'string model', 'algebra, monodromy', 'field theory, Calabi-Yau', 'field theory, dyon', 'cohomology', 'mass spectrum', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502072'] | ["We consider duality transformations in N=2, d=4 Yang-Mills theory coupled to N=2 supergravity. A symplectic and coordinate covariant framework is established, which allows one to discuss stringy `classical and quantum duality symmetries' (monodromies), incorporating T and S dualities. In particular, we shall be able ... | ['1995-02-14'] |
16,110 | ['eng'] | ['Ivanov, E A'] | ['On the harmonic superspace geometry of (4,4) supersymmetric sigma models with torsion'] | ['Particle Physics - Theory'] | ['sigma model, nonlinear', 'torsion', 'dimension, 2', 'supersymmetry, superspace', 'superspace, harmonic', 'gauge field theory'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502073'] | ['Starting from the dual action of (4,4) 2D twisted multiplets in the harmonic superspace with two independent sets of SU(2) harmonic variables, we present its generalization which hopefully provides an off-shell description of general (4,4) supersymmetric sigma models with torsion. The generic action is characterized ... | ['1995-02-14'] |
16,111 | ['eng'] | ['Kiem, Y H', 'Verlinde, Herman L', 'Verlinde, Erik'] | ['Black hole horizons and complementarity'] | ['Particle Physics - Theory'] | ['black hole, horizon', 'gravitation', 'effect, back reaction', 'radiation, Hawking', 'field theory, scalar', 'quantum mechanics'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502074'] | ['We investigate the effect of gravitational back-reaction on the black hole evaporation process. The standard derivation of Hawking radiation is re-examined and extended by including gravitational interactions between the infalling matter and the outgoing radiation. We find that these interactions lead to substantial ... | ['1995-02-14'] |
16,112 | ['eng'] | ['Liu, Q P'] | ['Hamiltonian structures of multi-component constrained KP hierarchy'] | ['Particle Physics - Theory'] | ['Kadomtsev-Petviashvili equation, hierarchy', 'Hamiltonian formalism', 'constraint'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502076'] | ['We consider the Hamiltonian theory for the multi-component KP hierarchy. We show that the second Hamiltonian structures constructed by Sidorenko and Strampp[J. Math. Phys. {\\bf 34}, 1429(1993)] are not Hamiltonian. A candidate for the second Hamiltonian Structures is proposed and is proved to lead to hereditary oper... | ['1995-02-14'] |
16,113 | ['eng'] | ['Fradkin, E S', 'Manias, M V', 'Schaposnik, F A'] | ['Bosonization of three dimensional non-abelian fermion field theories'] | ['Particle Physics - Theory'] | ['Thirring model, massive', 'massive, Thirring model', 'gauge field theory, SU(N)', 'bosonization', 'dimension, 3', 'Chern-Simons term', 'Wilson loop'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502066'] | ['We discuss bosonization in three dimensions of an SU(N) massive Thirring model in the low-energy regime. We find that the bosonized theory is related (but not equal) to SU(N) Yang-Mills-Chern-Simons gauge theory. For free massive fermions bosonization leads, at low energies, to the pure SU(N) (level k=1) Chern-Simons... | ['1995-02-13'] |
16,114 | ['eng'] | ['Kallosh, R', 'Linde, Andrei D', 'Linde, D', 'Susskind, Leonard'] | ['Gravity and global symmetries'] | ['Particle Physics - Theory'] | ['violation, CP', 'gravitation, effect', 'effect, nonperturbative', 'field theory, axion', 'symmetry, gauge', 'mass, axion', 'axion, mass', 'wormhole', 'gauge field theory, tensor', 'field equations, instanton', 'field theory, scalar', 'symmetry, spontaneously broken', 'potential', 'string model', 'numerical calculatio... | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502069'] | ['There exists a widely spread notion that gravitational effects can strongly violate global symmetries. If this is correct, it may lead to many important consequences. We will argue, in particular, that nonperturbative gravitational effects in the axion theory lead to a strong violation of CP invariance unless they ar... | ['1995-02-13'] |
16,115 | ['eng'] | ['Flato, M', 'Simon, J C H', 'Taflin, E'] | ['Asymptotic completeness, global existence and the infrared problem for the Maxwell-Dirac equations'] | ['Particle Physics - Theory'] | ['Dirac-Maxwell equation', 'algebra, Lie', 'representation, nonlinear', 'group theory, Poincare', 'boundary condition', 'asymptotic completeness', 'infrared problem', 'cohomology', 'functional analysis'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502061'] | ["In this monograph we prove that the nonlinear Lie algebra representation given by the manifestly covariant Maxwell-Dirac (M-D) equations is integrable to a global nonlinear representation U of the Poincar\\'e group {\\cal P}_0 on a differentiable manifold {\\cal U}_\\infty of small initial conditions for the M-D equa... | ['1995-02-13'] |
16,116 | ['eng'] | ['Hayward, J'] | ['The string motivated model'] | ['Particle Physics - Theory'] | ['string model', 'effective action', 'dimension, 2', 'field theory, tachyon', 'conformal gauge', 'field equations, solution'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502062'] | ['The two-dimensional model which emerges from low-energy considerations of string theory is written down. Solutions of this classical model are noted,including some which have nontrivial tachyon field. The classical backreaction of the tachyon field on the black hole is determined, and solutions for a two parameter se... | ['1995-02-13'] |
16,117 | ['eng'] | ['Günaydin, M'] | ['Extended superconformal symmetry, Freudenthal triple systems and gauged WZW models'] | ['Particle Physics - Theory'] | ['talk', 'Wess-Zumino-Witten model', 'dimension, 2', 'gauge field theory', 'symmetry, SU(2) x SU(2) x U(1)', 'algebra, conformal', 'supersymmetry', 'algebra, representation', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502064'] | ["We review the construction of extended ( N=2 and N=4 ) superconformal algebras over triple systems and the gauged WZW models invariant under them. The N=2 superconformal algebras (SCA) realized over Freudenthal triple systems (FTS) admit extension to ``maximal'' N=4 SCA's with SU(2)XSU(2)XU(1) symmetry. A detailed st... | ['1995-02-13'] |
16,118 | ['eng'] | ['Chen, L', 'Dunne, G', 'Haller, K', 'Lim-Lombridas, E'] | ['Canonical quantization of spontaneously broken topologically massive gauge theory'] | ['Particle Physics - Theory'] | ['gauge field theory, SU(3)', 'Chern-Simons term', 'Higgs model', 'dimension, 3', 'mass, topological', 'topological, mass', 'quantization', 'Hamiltonian formalism', 'Gauss law', 'symmetry, spontaneously broken', 'perturbation theory'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502059'] | ["In this paper we investigate the canonical quantization of a non-Abelian topologically massive Chern-Simons theory in which the gauge fields are minimally coupled to a multiplet of scalar fields in such a way that the gauge symmetry is spontaneously broken. Such a model produces the Chern-Simons-Higgs mechanism in wh... | ['1995-02-10'] |
16,119 | ['eng'] | ['Oz, Y'] | ['On topological 2D string and intersection theory'] | ['Particle Physics - Theory'] | ['string model', 'dimension, 2', 'field theory, topological', 'fibre bundle', 'geometry, algebra', 'scattering amplitude'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502058'] | ['The topological description of 2D string theory at the self-dual radius is studied in the algebro-geometrical formulation of the A_{k+1} topological models at k=-3. Genus zero correlators of tachyons and their gravitational descendants are computed as intersection numbers on moduli space and compared to 2D string res... | ['1995-02-10'] |
16,120 | ['eng'] | ['Girardello, L', 'Giveon, Amit', 'Porrati, Massimo', 'Zaffaroni, A'] | ['S-duality in N=4 Yang-Mills theories with general gauge groups'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'supersymmetry', 'boundary condition', 'partition function', 'duality', 'energy', 'flux, electric', 'electric, flux', 'flux, magnetic', 'magnetic, flux'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502057'] | ["'t Hooft construction of free energy, electric and magnetic fluxes, and of the partition function with twisted boundary conditions, is extended to the case of N=4 supersymmetric Yang-Mills theories based on arbitrary compact, simple Lie groups. The transformation of the fluxes and the free energy under S-duality is p... | ['1995-02-10'] |
16,121 | ['eng'] | ['Ward, R S'] | ['Stable topological skyrmions on the 2D lattice'] | ['Particle Physics - Theory'] | ['lattice field theory', 'dimension, 2', 'Skyrmion, topological', 'potential', 'field equations, soliton', 'sigma model, O(3)', 'Heisenberg model', 'stability, topological', 'numerical calculations'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502048'] | ['In the continuum O(3) sigma model in two spatial dimensions, there are topological solitons whose size can be stabilized by adding Skyrme and potential terms. This paper describes a lattice version, namely a natural way of modifying the 2d Heisenberg model to achieve topological stability on the lattice.'] | ['1995-02-08'] |
16,122 | ['eng'] | ['Erdenebayar, D'] | ['An example of higher weight superpotential interaction in the heterotic string on orbifolds'] | ['Particle Physics - Theory'] | ['string model, heterotic', 'field theory, orbifold', 'correlation function', 'transformation, modular', 'analytic properties'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502046'] | ['An explicit orbifold example of the non-zero correlation functions related to the additional contribution to the induced mass term for Higgs particles at low energies is given. We verify that they form finite dimensional representations of the target space modular transformation SL_2(Z). This action of the modular gr... | ['1995-02-08'] |
16,123 | ['eng'] | ['Neves, C', 'Abreu, E M C', 'Wotzasek, C'] | ['On the covariantization of the chiral constraints'] | ['Particle Physics - Theory'] | ['quantization', 'Hamiltonian formalism', 'invariance, Lorentz', 'boson, chiral', 'dimension, 2'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502056'] | ['We show that a complete covariantization of the chiral constraint in the Floreanini-Jackiw necessitates an infinite number of auxiliary Wess-Zumino fields otherwise the covariantization is only partial and unable to remove the nonlocality in the chiral boson operator. We comment on recent works that claim to obtain c... | ['1995-02-09'] |
16,124 | ['eng'] | ['Poletti, S J', 'Twamley, J', 'Wiltshire, D L'] | ['Dyonic dilaton black holes'] | ['Particle Physics - Theory'] | ['relativity theory, general', 'field theory, dilaton', 'gauge field theory, U(1)', 'field theory, tensor', 'Einstein equation, solution', 'black hole', 'radiation, Hawking', 'temperature', 'numerical calculations'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502054'] | ['The properties of static spherically symmetric black holes, which are both electrically and magnetically charged, and which are coupled to the dilaton in the presence of a cosmological constant, Lambda, are considered. It is shown that apart from the Reissner-Nordstrom-de Sitter solution with constant dilaton, such s... | ['1995-02-08'] |
16,125 | ['eng'] | ['Jackiw, R W'] | ['Non-perturbative results for high-T QCD'] | ['Particle Physics - Theory'] | ['talk', 'quantum chromodynamics', 'finite temperature, high', 'propagator', 'gauge field theory', 'Chern-Simons term', 'effect, nonperturbative', 'transport theory'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502052'] | ['These days, as high energy particle colliders become unavailable for testing speculative theoretical ideas, physicists are looking to other environments that may provide extreme conditions where theory confronts physical reality. One such circumstance may arise at high temperature T, which perhaps can be attained in ... | ['1995-02-08'] |
16,126 | ['eng'] | ['Cappelli, A P', 'Trugenberger, Carlo Andrea', 'Zemba, G R'] | ['Quantum Hall fluids as W-infinity minimal models'] | ['Particle Physics - Theory'] | ['talk, Banff 1994/08/16', 'field theory, conformal', 'dimension, 2', 'algebra, W(infinity)', 'algebra, representation', 'Hall effect', 'model, fluid', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502050'] | ["We review our recent work on the algebraic characterization of quantum Hall fluids. Specifically, we explain how the incompressible quantum fluid ground states can be classified by effective edge field theories with the W-infinity dynamical symmetry of ``quantum area-preserving diffeomorphisms''. Using the representa... | ['1995-02-08'] |
16,127 | ['eng'] | ['De Vega, H J', 'Ramírez-Mittelbrunn, J', 'Ramón-Medrano, M', 'Sánchez, N'] | ['Classical splitting of fundamental strings'] | ['Particle Physics - Theory'] | ['string model', 'field equations, solution', 'constraint, solution', 'string, closed', 'gravitation'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502049'] | ['We find exact solutions of the string equations of motion and constraints describing the {\\em classical}\\ splitting of a string into two. We show that for the same Cauchy data, the strings that split have {\\bf smaller} action than the string without splitting. This phenomenon is already present in flat space-time.... | ['1995-02-08'] |
16,128 | ['eng'] | ['Lemes, V E R', 'Renan, R', 'Sorella, S P'] | ['$\\phi_{4}^{4}$-theory for antisymmetric tensor matter fields in Minkowski space-time'] | ['Particle Physics - Theory'] | ['phi**n model, 4', 'gauge field theory, tensor', 'gauge field theory, Yang-Mills', 'transformation, Becchi-Rouet-Stora', 'field theory, action'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502047'] | ['The nonabelian generalization of a recently proposed abelian axial gauge model for tensor matter fields is obtained. In both cases the model can be derived from a \\vf^{4}-type theory for antisymmetric fields obeying a complex self-dual condition.'] | ['1995-02-08'] |
16,129 | ['eng'] | ['Volkov, M S', 'Brodbeck, O', 'Lavrelashvili, G', 'Straumann, N'] | ['The number of sphaleron instabilities of the Bartnik-McKinnon solitons and non-abelian black holes'] | ['Particle Physics - Theory'] | ['space-time', 'gauge field theory, SU(2)', 'field equations, sphaleron', 'stability', 'black hole'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502045'] | ['It is proven that there are precisely n odd-parity sphaleron-like unstable modes of the n-th Bartnik-McKinnon soliton and the n-th non-abelian black hole solution of the Einstein-Yang-Mills theory for the gauge group SU(2).'] | ['1995-02-08'] |
16,130 | ['eng'] | ['Kim, Y', 'Tsujimaru, S', 'Yamawaki, K'] | ['Nambu-Goldstone boson on the light-front'] | ['Particle Physics - Theory'] | ['talk, Mt. Sorak 1994/06/27', 'phi**n model, 4', 'dimension, 2', 'symmetry, spontaneously broken', 'quantization, light front', 'zero mode', 'Goldstone particle'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502043'] | ['Spontaneous breakdown of the continuous symmetry is studied in the framework of discretized light-front quantization. We consider linear sigma model in 3+1 dimension and show that the careful treatment of zero modes together with the regularization of the theory by introducing NG boson mass leads to the correct descr... | ['1995-02-08'] |
16,131 | ['eng'] | ['Srivastava, Y N', 'Vitiello, G', 'Widom, A'] | ['Quantum dissipation and quantum noise'] | ['Particle Physics - Theory'] | ['model, oscillator', 'thermodynamics', 'quantum mechanics', 'path integral'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502044'] | ['We derive the exact action for a damped mechanical system ( and the special case of the linear oscillator) from the path integral formulation of the quantum Brownian motion problem developed by Schwinger and by Feynman and Vernon. The doubling of the phase-space degrees of freedom for dissipative systems and thermal ... | ['1995-02-08'] |
16,132 | ['eng'] | ['Harris, M G'] | ['A two term truncation of the multiple Ising model coupled to 2d gravity'] | ['Particle Physics - Theory'] | ['Ising model', 'phi**n model, 3', 'lattice field theory, planar', 'quantum gravity', 'dimension, 2', 'critical phenomena', 'energy', 'partition function', 'model, polymer', 'numerical calculations'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502036'] | ['We consider a model of p independent Ising spins on a dynamical planar phi-cubed graph. Truncating the free energy to two terms yields an exactly solvable model that has a third order phase transition from a pure gravity region (gamma=-1/2) to a tree-like region (gamma=1/2), with gamma=1/3 on the critical line. We ar... | ['1995-02-07'] |
16,133 | ['eng'] | ['De Bièvre, S', 'Giachetti, R'] | ['Quantization of a class of piecewise affine transformations on the torus'] | ['Particle Physics - Theory'] | ['quantization, geometrical', 'space-time, torus', 'transformation, affine', 'chaos'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502035'] | ['We present a unified framework for the quantization of a family of discrete dynamical systems of varying degrees of ``chaoticity". The systems to be quantized are piecewise affine maps on the two-torus, viewed as phase space, and include the automorphisms, translations and skew translations. We then treat some discon... | ['1995-02-07'] |
16,134 | ['eng'] | ['Das, A', 'Hott, M B'] | ['Supersymmetric theories on a non simply connected space-time'] | ['Particle Physics - Theory'] | ['space-time, R(3) x S(1)', 'Wess-Zumino model', 'supersymmetry', 'topology, effect', 'perturbation theory, higher-order', 'renormalization'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502027'] | ['We study the Wess-Zumino theory on {\\bf R}^3 \\times S^1 where a spatial coordinate is compactified. We show that when the bosonic and fermionic fields satisfy the same boundary condition, the theory does not develop a vacuum energy or tadpoles. We work out the two point functions at one loop and show that their for... | ['1995-02-06'] |
16,135 | ['eng'] | ['Chen, Q Z', 'Luo, X Q', 'Guo, S H'] | ['QCD$_{3}$ vacum wave function'] | ['Particle Physics - Theory'] | ['gauge field theory, SU(3)', 'lattice field theory', 'Hamiltonian formalism', 'dimension, 3', 'vacuum state, wave function', 'scaling'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502034'] | ['We investigate quantum chromodynamics in 2+1 dimensions (\\rm{QCD}_3) using the Hamiltonian lattice field theory approach. The long wavelength structure of the ground state, which is closely related to the confinement phenomenon, is analyzed and its vacuum wave function is evaluated by means of the recently developed... | ['1995-02-07'] |
16,136 | ['eng'] | ['Diamantini, M Cristina', 'Sodano, P', 'Trugenberger, Carlo Andrea'] | ['Self duality and oblique confinement in planar gauge theories'] | ['Particle Physics - Theory'] | ['gauge field theory, U(1)', 'gauge field theory, Z(2) x Z(2)', 'gauge field theory, planar', 'lattice field theory', 'duality', 'confinement', 'partition function', 'Wilson loop', 'critical phenomena', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502032'] | ['We investigate the non-perturbative structure of two planar Z_p \\times Z_p lattice gauge models and discuss their relevance to two-dimensional condensed matter systems and Josephson junction arrays. Both models involve two compact U(1) gauge fields with Chern-Simons interactions, which break the symmetry down to Z_p... | ['1995-02-07'] |
16,137 | ['eng'] | ['Batalin, I A', 'Marnelius, R', 'Semikhatov, A M'] | ['Triplectic quantization'] | ['Particle Physics - Theory'] | ['quantization, geometrical', 'symmetry, Sp(2)', 'differential geometry, symplectic', 'Hamiltonian formalism', 'gauge field theory', 'path integral'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502031'] | ["A geometric description is given for the Sp(2) covariant version of the field-antifield quantization of general constrained systems in the Lagrangian formalism. We develop differential geometry on manifolds in which a basic set of coordinates (`fields') have two superpartners (`antifields'). The quantization on such ... | ['1995-02-07'] |
16,138 | ['eng'] | ['Batalin, I A', 'Marnelius, R'] | ['Completely anticanonical form of Sp(2)-symmetric Lagrangian quantization'] | ['Particle Physics - Theory'] | ['quantization', 'Hamiltonian formalism', 'differential geometry, symplectic', 'gauge field theory', 'path integral', 'symmetry, Sp(2)'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502030'] | ['The Sp(2)-symmetric Lagrangian quantization scheme is represented in a completely anticanonical form. Antifields are assigned to all field variables including former "parametric" ones \\pi^{Aa}. The antibrackets (F, G)^a as well as the operators \\triangle^a and V^a are extended to include the new anticanonical pairs... | ['1995-02-06'] |
16,139 | ['eng'] | ['Kanno, H'] | ['Topological strings with scaling violation and Toda lattice hierarchy'] | ['Particle Physics - Theory'] | ['string model, topological', 'lattice, Toda', 'lattice, hierarchy', 'group theory, Weyl', 'group theory, monodromy', 'scaling, violation', 'operator, Lax', 'Hamiltonian formalism', 'correlation function', 'field theory, constraint', 'expansion'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502029'] | ['We show that there is a series of topological string theories whose integrable structure is described by the Toda lattice hierarchy. The monodromy group of the Frobenius manifold for the matter sector is an extension of the affine Weyl group \\widetilde W (A_N^{(1)}) introduced by Dubrovin. These models are generaliz... | ['1995-02-06'] |
16,140 | ['eng'] | ['Piguet, O'] | ['On the role of vector supersymmetry in topological field theory'] | ['Particle Physics - Theory'] | ['talk, Angra dos Reis 1994/10', 'field theory, topological', 'supersymmetry, vector', 'Chern-Simons term', 'Slavnov identity', 'transformation, Becchi-Rouet-Stora', 'cohomology', 'perturbation theory, higher-order'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502033'] | ['Vector supersymmetry is typical of topological field theory. Its role in the construction of gauge invariant quantities is explained, as well as its role in the cancellation of the ultraviolet divergences. The example of the Chern-Simons theory in three dimensions is treated in details.'] | ['1995-02-07'] |
16,141 | ['eng'] | ['Enriquez, B'] | ['Soliton solutions of the classical lattice sine-Gordon system'] | ['Particle Physics - Theory'] | ['sine-Gordon model, classical', 'lattice field theory', 'field equations, soliton', 'scattering, soliton', 'soliton, scattering'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502022'] | ['We study the soliton-type solutions of the system introduced by B. Feigin and the author in in [EF]. We show that it reduces to a top-like system, and we study the behaviour of the solutions at the lattice infinity. We compute the scattering of the solitons and study some periodic solutions of the system.'] | ['1995-02-06'] |
16,142 | ['eng'] | ['Cappelli, A P', 'Trugenberger, Carlo Andrea', 'Zemba, G R'] | ['Stable hierarchical quantum Hall fluids as W(1+$\\infty$) minimal models'] | ['Particle Physics - Theory'] | ['field theory, conformal', 'dimension, 2', 'symmetry, W(infinity)', 'Hall effect', 'differential equations, hierarchy', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502021'] | ["In this paper, we pursue our analysis of the W-infinity symmetry of the low-energy edge excitations of incompressible quantum Hall fluids. These excitations are described by (1+1)-dimensional effective field theories, which are built by representations of the W-infinity algebra. Generic W-infinity theories predict ma... | ['1995-02-06'] |
16,143 | ['eng'] | ['Aurilia, A', 'Smailagic, A', 'Spallucci, E'] | ['Conformal p-branes as a source of structure in spacetime'] | ['Particle Physics - Theory'] | ['membrane model, p-brane', 'gravitation', 'field theory, action', 'invariance, conformal', 'space-time'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502026'] | ['We discuss a model of a conformal p-brane interacting with the world volume metric and connection. The purpose of the model is to suggest a mechanism by which gravity coupled to p-branes leads to the formation of structure rather than homogeneity in spacetime. Furthermore, we show that the formation of structure is a... | ['1995-02-06'] |
16,144 | ['eng'] | ['Asorey, M', 'Falceto, F'] | ['On the consistency of the regularization of gauge theories by high covariant derivatives'] | ['Particle Physics - Theory'] | ['gauge field theory, SU(N)', 'ghost', 'regularization, Pauli-Villars', 'regularization, derivative', 'regularization, geometrical', 'perturbation theory, higher-order', 'invariance, Lorentz', 'renormalization group'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502025'] | ['We show that regularization of gauge theories by higher covariant derivatives and gauge invariant Pauli-Villars regulators is a consistent method if the Pauli-Villars vector fields are considered in a covariant \\alpha--gauge with \\alpha\\neq 0. The limit \\alpha\\rightarrow 0 in the regulating Pauli-Villars fields ... | ['1995-02-06'] |
16,145 | ['eng'] | ['Tarrach, Rolf'] | ['Is there physics in Landau poles?'] | ['Particle Physics - Theory'] | ['Salam-Weinberg model', 'weak interaction', 'perturbation theory', 'renormalization, pole', 'phi**n model, 4', 'triviality', 'quantum mechanics', 'dimension, 2'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502020'] | ['Triviality and Landau poles are often greeted as harbingers of new physics at 1 TeV. After briefly reviewing the ideas behind this, a model of singular quantum mechanics is introduced. Its ultraviolet structure, as well as some features of its vacuum, related to triviality, very much parallel \\lambda\\phi^4. The mod... | ['1995-02-06'] |
16,146 | ['eng'] | ['Asorey, M', 'Falceto, F', 'López, J L', 'Luzón, G'] | ['Nodes, monopoles and confinement in 2+1-dimensional gauge theories'] | ['Particle Physics - Theory'] | ['gauge field theory, U(1)', 'dimension, 3', 'Chern-Simons term', 'field theory, monopole', 'confinement'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502024'] | ['In the presence of Chern-Simons interactions the wave functionals of physical states in 2+1-dimensional gauge theories vanish at anumber of nodal points. We show that those nodes are located at some classical configurations which carry a non-trivial magnetic charge. In abelian gauge theories this fact explains why ma... | ['1995-02-06'] |
16,147 | ['eng'] | ['Schelstraete, S', 'Verschelde, H'] | ['A technique for generating Feynman diagrams'] | ['Particle Physics - Theory'] | ['Feynman graph, higher-order', 'field theoretical model, vector', 'Gross-Neveu model', 'Thirring model', 'bootstrap', 'energy', 'correlation function', 'quantum electrodynamics', 'interaction, nonlocal', 'nonlocal, interaction'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502019'] | ['We present a simple technique that allows to generate Feynman diagrams for vector models with interactions of order 2n and similar models (Gross-Neveu, Thirring model), using a bootstrap equation that uses only the free field value of the energy as an input. The method allows to find the diagrams to, in principle, ar... | ['1995-02-06'] |
16,148 | ['eng'] | ['Russo, Jorge G', 'Tseytlin, Arkady A'] | ['Exactly solvable string models of curved space-time backgrounds'] | ['Particle Physics - Theory'] | ['string model, closed', 'sigma model, nonlinear', 'field equations, solution', 'space-time', 'background field', 'Kaluza-Klein model'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502038'] | ['We consider a new 3-parameter class of exact 4-dimensional solutions in closed string theory and solve the corresponding string model, determining the physical spectrum and the partition function. The background fields (4-metric, antisymmetric tensor, two Kaluza-Klein vector fields, dilaton and modulus) generically d... | ['1995-02-07'] |
16,149 | ['eng'] | ['Arodz, H'] | ['On expansion in the width for domain walls'] | ['Particle Physics - Theory'] | ['field equations, solution', 'domain wall, width', 'expansion, width', 'perturbation theory', 'field theory, scalar', 'domain wall, cylinder', 'domain wall, sphere', 'transformation'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502018'] | ['The well-known idea to construct domain wall type solutions of field equations by means of an expansion in the width of the domain wall is reexamined. We observe that the problem involves singular perturbations. Hilbert-Chapman-Enskog method is used to construct a consistent perturbative expansion. We obtain the solu... | ['1995-02-06'] |
16,150 | ['eng'] | ['Böttger, W', 'Wissowski, H', 'Kastrup, H A'] | ['Constructing solutions of Hamilton-Jacobi equations for 2 D fields with one component by means of Bäcklund transformations'] | ['Particle Physics - Theory'] | ['dimension, 2', 'Hamiltonian formalism', 'field equations, solution', 'integrability', 'Baecklund transformation', 'numerical calculations'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502005'] | ['The Hamilton-Jacobi formalism generalized to 2-dimensional field theories according to Lepage\'s canonical framework is applied to several relativistic real scalar fields, e.g. massless and massive Klein-Gordon, Sinh and Sine-Gordon, Liouville and \\phi^4 theories. The relations between the Euler-Lagrange and the Ham... | ['1995-02-02'] |
16,151 | ['eng'] | ['Martellini, M', 'Spreafico, M', 'Yoshida, K'] | ['The quantization of anomalous gauge field theory'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'fermion, chiral', 'anomaly', 'quantization', 'path integral', 'transformation, Becchi-Rouet-Stora', 'dimension, 2', 'gravitation, induced'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502023'] | ['We discuss the so called gauge invariant quantization of anomalous gauge field theory, originally due to Faddeev and Shatashvili. It is pointed out that the further non invariance of relevant path integral measures poses a problem when one tries to translate it to BRST formalism. The method by which we propose to get... | ['1995-02-06'] |
16,152 | ['eng'] | ['Dowker, John S', 'Apps, J S'] | ['Further functional determinants'] | ['Particle Physics - Theory'] | ['field theory, scalar', 'determinant', 'dimension, 2-4', 'boundary condition', 'transformation, conformal', 'regularization, zeta function', 'effective action'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502015'] | ['Functional determinants for the scalar Laplacian on spherical caps and slices, flat balls, shells and generalised cylinders are evaluated in two, three and four dimensions using conformal techniques. Both Dirichlet and Robin boundary conditions are allowed for. Some effects of non-smooth boundaries are discussed; in ... | ['1995-02-03'] |
16,153 | ['eng'] | ['Kehagias, A A', 'Madore, J', 'Mourad, J', 'Zoupanos, George'] | ['Linear connections on extended space-time'] | ['Particle Physics - Theory'] | ['Kaluza-Klein model', 'dimension, >4', 'differential geometry, noncommutative', 'differential forms'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502017'] | ['A modification of Kaluza-Klein theory is proposed which is general enough to admit an arbitrary finite noncommutative internal geometry. It is shown that the existence of a non-trival extension to the total geometry of a linear connection on space-time places severe restrictions on the structure of the noncommutative... | ['1995-02-03'] |
16,154 | ['eng'] | ['Moreira, E S'] | ['Massive quantum fields in a conical background'] | ['Particle Physics - Theory'] | ['space-time, any-dimensional', 'Klein-Gordon equation', 'Dirac equation', 'propagator', 'tensor, energy-momentum', 'spin'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502016'] | ['Representations of the Klein-Gordon and Dirac propagators are determined in a N dimensional conical background for massive fields twisted by an arbitrary angle 2\\pi\\sigma. The Dirac propagator is shown to be obtained from the Klein-Gordon propagator twisted by angles 2\\pi\\sigma\\pm {\\cal D}/2 where {\\cal D} is ... | ['1995-02-03'] |
16,155 | ['eng'] | ['Daul, J M'] | ['Q-states Potts model on a random planar lattice'] | ['Particle Physics - Theory'] | ['matrix model', 'Potts model', 'coupling, gravitation', 'gravitation, coupling', 'space-time, sphere', 'critical phenomena', 'random lattice', 'scaling', 'coupling constant'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502014'] | ['We propose a matrix-model derivation of the scaling exponents of the critical and tricritical q-states Potts model coupled to gravity on a sphere. In close analogy with the O(n) model, we reduce the determination of the one-loop-to-vacuum expectation to the resolution of algebraic equations; and find the explicit sca... | ['1995-02-03'] |
16,156 | ['eng'] | ['Aharony, O'] | ['Remarks on non-abelian duality in N=1 supersymmetric gauge theories'] | ['Particle Physics - Theory'] | ['gauge field theory, SU(N)', 'supersymmetry', 'duality, nonabelian', 'potential, flat direction', 'perturbation theory'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502013'] | ['Recently Seiberg has conjectured a duality symmetry connecting different theories of the supersymmetric QCD type. We provide support for this conjecture by analyzing a flat direction of the theory along which the two dual theories go over to the same theory in the IR.'] | ['1995-02-03'] |
16,157 | ['eng'] | ['Distler, Jacques'] | ['Notes on (0,2) superconformal field theories'] | ['Particle Physics - Theory'] | ['lectures', 'string model', 'supersymmetry, superfield', 'vacuum state', 'field theory, conformal', 'dimension, 2', 'field theory, Calabi-Yau', 'Landau-Ginzburg model'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502012'] | ['In these lecture notes, I review the ``linear sigma model" approach to (0,2) string vacua. My aim is to provide the reader with a toolkit for studying a very broad class of (0,2) superconformal field theories with the requisite properties to be candidate string vacua. These lectures were delivered at the 1994 Trieste... | ['1995-02-02'] |
16,158 | ['eng'] | ['Skorik, S', 'Saleur, H'] | ['Boundary bound states and boundary bootstrap in the sine-Gordon model with Dirichlet boundary conditions'] | ['Particle Physics - Theory'] | ['sine-Gordon model', 'boundary condition', 'bound state', 'S-matrix', 'bootstrap', 'magnetic field', 'Thirring model', 'Bethe ansatz', 'string model'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502011'] | ["We present a complete study of boundary bound states and related boundary S-matrices for the sine-Gordon model with Dirichlet boundary conditions. Our approach is based partly on the bootstrap procedure, and partly on the explicit solution of the inhomogeneous XXZ model with boundary magnetic field and of the boundar... | ['1995-02-02'] |
16,159 | ['eng'] | ['Alexandrov, M D', 'Kontsevich, M L', 'Schwarz, A', 'Zaboronsky, O'] | ['The geometry of the master equation and topological quantum field theory'] | ['Particle Physics - Theory'] | ['mechanics, classical', 'quantization, Batalin-Vilkovisky', 'Hamiltonian formalism', 'group theory, Lie', 'invariance, Becchi-Rouet-Stora', 'differential geometry, symplectic', 'master equation, solution'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502010'] | ['In Batalin-Vilkovisky formalism a classical mechanical system is specified by means of a solution to the {\\sl classical master equation}. Geometrically such a solution can be considered as a QP-manifold, i.e. a super\\m equipped with an odd vector field Q obeying \\{Q,Q\\}=0 and with Q-invariant odd symplectic struc... | ['1995-02-02'] |
16,160 | ['eng'] | ['Günaydin, M', 'Nicolai, Hermann C'] | ['Seven dimensional octonionic Yang-Mills instanton and its extension to an heterotic string soliton'] | ['Particle Physics - Theory'] | ['gauge field theory, G(2)', 'dimension, 7', 'field equations, instanton', 'field theory, octonion', 'string model, heterotic'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502009'] | ['We construct an octonionic instanton solution to the seven dimensional Yang-Mills theory based on the exceptional gauge group G_2 which is the automorphism group of the division algebra of octonions. This octonionic instanton has an extension to a solitonic solution of the low energy effective theory of the heterotic... | ['1995-02-02'] |
16,161 | ['eng'] | ['Fort, H', 'Gambini, R'] | ['Fermi-Bose transmutation for stringlike excitations of Maxwell-Higgs systems'] | ['Particle Physics - Theory'] | ['gauge field theory, U(1)', 'Higgs model', 'dimension, 2', 'field equations, solution', 'string model', 'partition function'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502008'] | ['We show that a closed Nielsen-Olesen string in presence of a point scalar source exhibits the phenomenon of Fermi-Bose transmutation. This provides physical support to previous claims about transmutation between bosonic and fermionic one-dimensional structures in (3+1) dimensions. In order to render the computations ... | ['1995-02-02'] |
16,162 | ['eng'] | ['Cognola, G', 'Vanzo, L', 'Zerbini, S'] | ['One-loop quantum corrections to the entropy for a 4-dimensional eternal black hole'] | ['Particle Physics - Theory'] | ['quantum gravity', 'black hole', 'entropy', 'temperature', 'radiation, Hawking'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502006'] | ['The first quantum corrections to the free energy for an eternal 4-dimensional black hole is investigated at one-loop level, in the large mass limit of the black hole, making use of the conformal techniques related to the optical metric. The quadratic and logarithmic divergences as well as a finite part associated wit... | ['1995-02-02'] |
16,163 | ['eng'] | ['Lee, R N', 'Milshtein, A I'] | ['Quasiclassical Green function and Delbrück scattering in a screened Coulomb field'] | ['Particle Physics - Theory'] | ['Dirac equation', 'propagator, quasiclassical', 'spectral representation', 'photon, elastic scattering', 'elastic scattering, photon', 'scattering, Delbrueck', 'Delbrueck, scattering', 'external field', 'symmetry, rotational', 'angular momentum', 'wave function', 'potential, Coulomb', 'effect, screening', 'scattering ... | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502004'] | ['A simple integral representation is derived for the quasiclassical Green function of the Dirac equation in an arbitrary spherically-symmetric decreasing external field. The consideration is based on the use of the quasiclassical radial wave functions with the main contribution of large angular momenta taken into acco... | ['1995-02-02'] |
16,164 | ['eng'] | ['Anishetty, R', 'Basu, R', 'Sharatchandra, H S', 'Hari-Dass, N D'] | ['Infrared behaviour of systems with Goldstone bosons'] | ['Particle Physics - Theory'] | ['sigma model, nonlinear', 'symmetry, O(N)', 'symmetry, spontaneously broken', 'dimension, 2-4', 'perturbation theory, higher-order', 'infrared problem', 'renormalization group', 'Ward identity', 'Dyson-Schwinger equation', 'expansion 1/N'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502003'] | ['We develop various complementary concepts and techniques for handling quantum fluctuations of Goldstone bosons. We emphasise that one of the consequences of the masslessness of Goldstone bosons is that the longitudinal fluctuations also have a diverging susceptibility characterised by an anomalous dimension (d-2) in ... | ['1995-02-02'] |
16,165 | ['eng'] | ['Maharana, J P'] | ['Symmetries of the dimensionally reduced string effective action'] | ['Particle Physics - Theory'] | ['string model, heterotic', 'dimension, 10', 'dimensional reduction', 'effective action', 'dimension, 2', 'current, conservation law'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502002'] | ['A two dimensional string effective action is obtained by dimensionally reducing the bosonic part of the ten dimensional heterotic string effective action. It is shown that this effective action, with a few restrictions on some backgrounds describes a two dimensional model which admits an infinite sequence of nonlocal... | ['1995-02-02'] |
16,166 | ['eng'] | ['Maharana, J P'] | ['Hidden symmetries of two dimensional string effective action'] | ['Particle Physics - Theory'] | ['string model, heterotic', 'dimension, 10', 'effective action', 'dimensional reduction', 'dimension, 2', 'current, conservation law', 'nonlocal', 'algebra, Kac-Moody'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9502001'] | ['The ten dimensional heterotic string effective action with graviton, dilaton and antisymmetric tensor fields is dimensionally reduced to two spacetime dimensions. The resulting theory, with some constraints on backgrounds, admits infinite sequence of conserved nonlocal currents. It is shown that generators of the inf... | ['1995-02-02'] |
16,167 | ['eng'] | ['Funahashi, K', 'Kashiwa, T', 'Sakoda, S', 'Fujii, K'] | ['Exactness in the WKB approximation for some homogeneous spaces'] | ['Particle Physics - Theory'] | ['field theoretical model, CP(N-1)', 'quantization', 'coherent state', 'approximation, quasiclassical', 'Hamiltonian formalism'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501145'] | ['Analysis of the WKB exactness in some homogeneous spaces is attempted. CP^N as well as its noncompact counterpart D_{N,1} is studied. U(N\\!+\\!1) or U(N,1) based on the Schwinger bosons leads us to CP^N or D_{N,1} path integral expression for the quantity, {\\rm tr} e^{-iHT}, with the aid of coherent states. The WKB... | ['1995-02-01'] |
16,168 | ['eng'] | ['Frolov, S A'] | ['Gauge-invariant Hamiltonian formulation of lattice Yang-Mills theory and the Heisenberg double'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'gauge field theory, SL(N,C)', 'lattice field theory, classical', 'dimension, 2-3', 'Hamiltonian formalism', 'invariance, gauge', 'group theory, Lie'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501143'] | ['It it known that to get the usual Hamiltonian formulation of lattice Yang-Mills theory in the temporal gauge A_{0}=0 one should place on every link the cotangent bundle of a Lie group. The cotangent bundle may be considered as a limiting case of a so called Heisenberg double of a Lie group which is one of the basic o... | ['1995-02-01'] |
16,169 | ['eng'] | ['Iochum, B', 'Schücker, T'] | ['Yang-Mills-Higgs versus Connes-Lott'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'Higgs model', 'fermion', 'differential geometry, noncommutative', 'particle, multiplet', 'multiplet, particle', 'group theory, representation'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501142'] | ['By a suitable choice of variables we show that every Connes-Lott model is a Yang-Mills-Higgs model. The contrary is far from being true. Necessary conditions are given. Our analysis is pedestrian and illustrated by examples.'] | ['1995-02-01'] |
16,170 | ['eng'] | ['Gates, S J', 'Ketov, S V'] | ['No N=4 strings on Wolf spaces'] | ['Particle Physics - Theory'] | ['string model', 'supersymmetry, superspace', 'coset space', 'algebra, conformal', 'sigma model, nonlinear', 'dimension, 2', 'charge, Becchi-Rouet-Stora'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501140'] | ['We generalize the standard N=2 supersymmetric Kazama-Suzuki coset construction to the N=4 case by requiring the {\\it non-linear} (Goddard-Schwimmer) N=4~ quasi-superconformal algebra to be realized on cosets. The constraints that we find allow very simple geometrical interpretation and have the Wolf spaces as their ... | ['1995-02-01'] |
16,171 | ['eng'] | ['Kiyanov-Charsky, S A'] | ['Path integral approach to bosonization of D=2 field theories'] | ['Particle Physics - Theory'] | ['bosonization', 'path integral', 'dimension, 2', 'Thirring model', 'Schwinger model', 'Gross-Neveu model, U(N)', 'Wess-Zumino-Witten model', 'sigma model, nonlinear'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501139'] | ['We suggest a method of bosonizing any D=2 theory. We demonstrate how it works with the examples of the Thirring and the Schwinger models, known results are reproduced. This method, being applied to the Gross-Neveu model, yields nonlinear boson WZW-type theory with additional constraint in the field space. Relation to... | ['1995-02-01'] |
16,172 | ['eng'] | ['Gandenberger, G M'] | ['Exact S-matrices for bound states of a$_{2}^{(1}$) affine Toda solitons'] | ['Particle Physics - Theory'] | ['field theory, Toda', 'field theory, affine', 'S-matrix', 'bound state', 'field theory, soliton', 'quantum group'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501136'] | ["Using Hollowood's conjecture for the S-matrix for elementary solitons in complex a_n^{(1)} affine Toda field theories we examine the interactions of bound states of solitons in a_2^{(1)} theory. The elementary solitons can form two different kinds of bound states: scalar bound states (the so-called breathers), and ex... | ['1995-01-31'] |
16,173 | ['eng'] | ['Liao, S B', 'Strickland, M'] | ['Renormalization group approach to field theory at finite temperature'] | ['Particle Physics - Theory'] | ['phi**n model, 4', 'symmetry, O(3)', 'field theory, Euclidean', 'finite temperature', 'perturbation theory, higher-order', 'renormalization group', 'regularization', 'numerical calculations'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501137'] | ['Scalar field theory at finite temperature is investigated via an improved renormalization group prescription which provides an effective resummation over all possible non-overlapping higher loop graphs. Explicit analyses for the lambda phi^4 theory are performed in d=4 Euclidean space for both low and high temperatur... | ['1995-01-31'] |
16,174 | ['eng'] | ['Kostov, Ivan K'] | ['Loop space Hamiltonian for $c \\leq 1$ open strings'] | ['Particle Physics - Theory'] | ['field theory, string', 'string, open', 'string, closed', 'central charge, < =1', 'Hamiltonian formalism', 'loop space', 'Dyson-Schwinger equation', 'matrix model', 'constraint, Virasoro', 'current algebra, U(1)'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501135'] | ['We construct a string field Hamiltonian describing the dynamics of open and closed strings with effective target-space dimension c\\le 1 . In order to do so, we first derive the Dyson-Schwinger equations for the underlying large N vector+matrix model and formulate them as a set of constraints satisfying decoupled Vir... | ['1995-01-31'] |
16,175 | ['eng'] | ['Wetterich, C'] | ['Effective quark interactions from QCD'] | ['Particle Physics - Theory'] | ['quantum chromodynamics', 'quark, interaction', 'interaction, quark', 'effective action', 'nonperturbative', 'field theory, scalar', 'n-point function', 'quark, heavy', 'gluon, propagator'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501119'] | ['We propose a new method for an analytical, non-perturbative computation of effective quark interactions from QCD. It is based on an exact flow equation which describes the scale dependence of the effective average action for quarks in presence of gluons.'] | ['1995-01-27'] |
16,176 | ['eng'] | ['Liao, S B'] | ['On connection between momentum cut-off and the proper-time regularization'] | ['Particle Physics - Theory'] | ['expansion, derivative', 'field theory, scalar', 'perturbation theory, higher-order', 'regularization, dependence', 'renormalization group', 'quantum electrodynamics'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501124'] | ['Equivalence between the momentum cut-off regulator and the Schwinger proper-time regularization is established by introducing a smearing function into the proper-time integration. We explicitly demonstrate the agreement in the renormalization group flow equations for the blocked potential as well as the wavefunction ... | ['1995-01-27'] |
16,177 | ['eng'] | ['Plefka, J C'] | ['Iterative solution of the supereigenvalue model'] | ['Particle Physics - Theory'] | ['matrix model', 'loop space', 'correlation function', 'Dyson-Schwinger equation, solution', 'perturbation theory'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501120'] | ['An integral form of the discrete superloop equations for the supereigenvalue model of Alvarez-Gaume, Itoyama, Manes and Zadra is given. By a change of variables from coupling constants to moments we find a compact form of the planar solution for general potentials. In this framework an iterative scheme for the calcul... | ['1995-01-27'] |
16,178 | ['eng'] | ['Beneventano, C G', 'Santangelo, E M'] | ['Connection between $\\zeta$ and cutoff regularizations of Casimir energies'] | ['Particle Physics - Theory'] | ['field theory, scalar', 'effect, Casimir', 'space-time', 'boundary condition', 'regularization, dependence', 'regularization, zeta function'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501122'] | ['We study the connection between \\zeta - and cutoff-regularized Casimir energies for scalar fields. We show that, in general, both regularization schemes lead to divergent contributions, and to finite parts which do not coincide. We determine the relationships among the various coefficients appearing in one approach ... | ['1995-01-27'] |
16,179 | ['eng'] | ['Löffelholz, J', 'Morchio, G', 'Strocchi, F'] | ['The QED(0+1) model and a possible dynamical solution of the strong CP problem'] | ['Particle Physics - Theory'] | ['quantum electrodynamics', 'dimension, 1', 'Schwinger model', 'gauge field theory', 'Hamiltonian formalism', 'path integral', 'boundary condition', 'vacuum state, Theta parameter', 'quantum mechanics', 'thermodynamics', 'violation, CP', 'strong interaction, CP', 'CP, strong interaction'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501118'] | ['The QED(0+1) model describing a quantum mechanical particle on a circle with minimal electromagnetic interaction and with a potential -M cos(phi - theta_M), which mimics the massive Schwinger model, is discussed as a prototype of mechanisms and infrared structures of gauge quantum field theories in positive gauges. T... | ['1995-01-27'] |
16,180 | ['eng'] | ['Abe, O'] | ['Does gravitational wave propagate in the five dimensional space-time with Kaluza-Klein monopole?'] | ['Particle Physics - Theory'] | ['Kaluza-Klein model, monopole', 'dimension, 5', 'gravitational radiation', 'perturbation theory'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501133'] | ['The behavior of small perturbations around the Kaluza-Klein monopole in the five dimensional space-time is investigated. The fact that the odd parity gravitational wave does not propagate in the five dimensional space-time with Kaluza-Klein monopole is found provided that the gravitational wave is constant in the fif... | ['1995-01-30'] |
16,181 | ['eng'] | ['Axenides, M', 'Johansen, A', 'Møller, J'] | ['On the Z$_{2}$ structure of the configuration space in Yang-Mills theories'] | ['Particle Physics - Theory'] | ['gauge field theory, SO(N)', 'gauge field theory, SU(N)', 'Chern-Simons term', 'charge, topological', 'symmetry, Z(2)', 'group theory'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501132'] | ['We argue for the presence of a {\\bf Z}_2 topological structure in the space of static gauge-Higgs field configurations of SU(2n) and SO(2n) Yang-Mills theories. We rigorously prove the existence of a {\\bf Z}_2 homotopy group of mappings from the 2-dim. projective sphere {\\bf R}P^2 into SU(2n)/{\\bf Z}_2 and SO(2n)... | ['1995-01-30'] |
16,182 | ['eng'] | ['Kachru, S'] | ['Some three generation (0,2) Calabi-Yau models'] | ['Particle Physics - Theory'] | ['string model, spontaneous compactification', 'field theory, Calabi-Yau', 'fusion, flavor', 'symmetry breaking', 'perturbation theory, higher-order', 'symmetry, E(6)', 'symmetry, SU(5)', 'symmetry, SU(3) x SU(2) x U(1)'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501131'] | ['It has recently been realized that a large class of Calabi-Yau models in which the VEV of the gauge connection is not set equal to the spin connection of the Calabi-Yau manifold are valid classical solutions of string theory. We provide some examples of three generation models based on such generalized Calabi-Yau com... | ['1995-01-30'] |
16,183 | ['eng'] | ['Kaiser, A', 'Chodos, A'] | ['Symmetry breaking in the static coordinate system of de Sitter spacetime'] | ['Particle Physics - Theory'] | ['quantum gravity', 'space-time, de Sitter', 'correlation function', 'symmetry breaking', 'field theory, scalar', 'massless'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501130'] | ['We study symmetry breaking in the static coordinate-system of de Sitter space. This is done with the help of the functional-Schr\\"odinger approach used in previous calculations by Ratra [1]. We consider a massless, minimally coupled scalar field as the parameter of a continuous symmetry (the angular component of an ... | ['1995-01-30'] |
16,184 | ['eng'] | ['Fursaev, D V', 'Solodukhin, S N'] | ['On the description of the Riemannian geometry in the presence of conical defects'] | ['Particle Physics - Theory'] | ['astrophysics, string', 'space-time', 'boundary condition', 'any-dimensional', 'quantum gravity', 'black hole', 'entropy'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501127'] | ['A consistent approach to the description of integral coordinate invariant functionals of the metric on manifolds {\\cal M}_{\\alpha} with conical defects (or singularities) of the topology C_{\\alpha}\\times\\Sigma is developed. According to the proposed prescription {\\cal M}_{\\alpha} are considered as limits of th... | ['1995-01-30'] |
16,185 | ['eng'] | ['Ferrari, F', 'Sobczyk, J T'] | ['Operator formalism for b-c systems with $\\lambda$ = 1 on general algebraic curves'] | ['Particle Physics - Theory'] | ['field theory, conformal', 'ghost', 'dimension, 2', 'Riemann surfaces', 'geometry, algebra', 'operator, algebra'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501125'] | ['In this letter we develope an operator formalism for the b-c systems with conformal weight \\lambda=1 defined on a general closed and orientable Riemann surface. The advantage of our approach is that the Riemann surface is represented as an affine algebraic curve. In this way it is possible to perform explicit calcul... | ['1995-01-30'] |
16,186 | ['eng'] | ['Ghoshal, D', 'Panda, S'] | ['Antibracket as the Hamiltonian structure of a classical integrable system'] | ['Particle Physics - Theory'] | ['Kadomtsev-Petviashvili equation, hierarchy', 'supersymmetry', 'Hamiltonian formalism', 'integrability', 'operator, Lax'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501129'] | ['The time evolution in a supersymmetric extension of the Kodomtsev-Petviashvilli hierarchy, a classical integrable system, is shown to be Hamiltonian. The canonical bracket associated to the Hamiltonian evolution is the classical analog of the antibracket encountered in the quantization of gauge theories. This provide... | ['1995-01-30'] |
16,187 | ['eng'] | ['Bugrij, A I', 'Shadura, V N'] | ['Q-deformed Grassmann field and the two-dimensional Ising model'] | ['Particle Physics - Theory'] | ['Ising model', 'dimension, 2', 'partition function', 'fermionization', 'algebra, Grassmann', 'algebra, deformation', 'algebra, Hecke', 'quantum algebra, SL(2,R)'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501116'] | ['The exact representation of the Ising partition function in form of the SL_q(2,R)-invariant functional integral for the lattice free q-fermion field theory (q=-1) is constructed. It is shown that the proposed method of \\break q-fermionization allows one to re-express the partition function of the eight-\\-vertex mod... | ['1995-01-26'] |
16,188 | ['eng'] | ['Breckenridge, J C', 'Steele, T G', 'Elias, V'] | ['Massless scalar field theory in a quantised space-time'] | ['Particle Physics - Theory'] | ['field theory, scalar', 'field theory, massless', 'massless, field theory', 'space-time', 'operator, algebra', 'quantization', 'two-point function', 'perturbation theory, higher-order'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501108'] | ['A method is developed to construct a non-local massless scalar field theory in a flat quantised space-time generated by an operator algebra. Implicit in the operator algebra is a fundamental length scale of the space-time. The fundamental two-point function of free fields is constructed by assuming that the causal Gr... | ['1995-01-24'] |
16,189 | ['eng'] | ['Grisaru, Marc T', 'Zanon, D'] | ['Lagrangian description of N=2 minimal models as critical points of Landau-Ginzburg theories'] | ['Particle Physics - Theory'] | ['talk', 'field theory, conformal', 'dimension, 2', 'supersymmetry, superfield', 'potential, Kaehler', 'Landau-Ginzburg model', 'renormalization group, transformation', 'critical phenomena'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501126'] | ['We discuss a two-dimensional lagrangian model with N=2 supersymmetry described by a K\\"{a}hler potential K(X,\\bar{X}) and superpotential gX^k which explicitly exhibits renormalization group flows to infrared fixed points where the central charge has a value equal that of the N=2, A_{k-1} minimal model. We consider ... | ['1995-01-30'] |
16,190 | ['eng'] | ['Modanese, G'] | ['General estimate for the graviton lifetime'] | ['Particle Physics - Theory'] | ['quantum gravity, nonperturbative', 'quantum gravity, simplex', 'postulated particle, graviton', 'graviton, decay modes', 'decay modes, graviton', 'graviton, lifetime', 'gravitation, fundamental constant', 'astrophysics, fundamental constant'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501123'] | ['By means of general kinematical arguments, the lifetime \\tau of a graviton of energy E for decay into gravitons is found to have the form \\tau^{-1} = \\frac{1}{EG} \\sum_{j=1,2,...} c_j (\\Lambda G)^j. Some recent, preliminary results of non perturbative simplicial quantum gravity are then employed to estimate the ... | ['1995-01-27'] |
16,191 | ['eng'] | ['McCartor, G', 'Robertson, D G'] | ['The Mandelstam-Leibbrandt prescription in light-cone quantized gauge theories'] | ['Particle Physics - Theory'] | ['quantum electrodynamics', 'dimension, 4', 'fermion', 'Schwinger model', 'dimension, 2', 'light cone gauge', 'quantization, constraint', 'Hamiltonian formalism'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501107'] | ['Quantization of gauge theories on characteristic surfaces and in the light-cone gauge is discussed. Implementation of the Mandelstam-Leibbrandt prescription for the spurious singularity is shown to require two distinct null planes, with independent degrees of freedom initialized on each. The relation of this theory t... | ['1995-01-24'] |
16,192 | ['eng'] | ['Susskind, Leonard'] | ['Trouble for remnants'] | ['Particle Physics - Theory'] | ['black hole', 'entropy', 'gravitation, fundamental constant', 'space-time, Rindler', 'low-energy theorem'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501106'] | ['An argument is presented for the inconsistency of black hole remnants which store the information which falls into black holes. Unlike previous arguments it is not concerned with a possible divergence in the rate of pair production. It is argued that the existence of remnants in the thermal atmosphere of Rindler spac... | ['1995-01-24'] |
16,193 | ['eng'] | ['Provero, P', 'Vinti, S'] | ['The 2D effective field theory of interfaces derived from 3D field theory'] | ['Particle Physics - Theory'] | ['phi**n model, 4', 'field theory, kink', 'path integral', 'operator, determinant', 'regularization, zeta function', 'effective action', 'dimension, 2', 'field theory, conformal'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501104'] | ['The one--loop determinant computed around the kink solution in the 3D \\phi^4 theory, in cylindrical geometry, allows one to obtain the partition function of the interface separating coexisting phases. The quantum fluctuations of the interface around its equilibrium position are described by a c=1 two--dimensional co... | ['1995-01-24'] |
16,194 | ['eng'] | ['Nielsen, N K', 'Quaade, U J'] | ['The relativistic top'] | ['Particle Physics - Theory'] | ['mechanics, classical', 'quantization, Batalin-Vilkovisky', 'constraint', 'spin', 'group theory, Lie', 'Hamiltonian formalism'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501103'] | ["The physical phase space of the relativistic top, as defined by Hanson and Regge, is expressed in terms of canonical coordinates of the Poincar\\'e group manifold. The system is described in the Hamiltonian formalism by the mass shell condition and constraints that reduce the number of spin degrees of freedom. The co... | ['1995-01-24'] |
16,195 | ['eng'] | ['Penati, S', 'Zanon, D'] | ['Quantum integrability in two-dimensional systems with boundary'] | ['Particle Physics - Theory'] | ['field theory, Toda', 'field theory, affine', 'dimension, 2', 'boundary condition', 'integrability', 'current, conservation law', 'quantization'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501105'] | ['In this paper we consider affine Toda systems defined on the half--plane and study the issue of integrability, i.e. the construction of higher--spin conserved currents in the presence of a boundary perturbation. First at the classical level we formulate the problem within a Lax pair approach which allows to determine... | ['1995-01-24'] |
16,196 | ['eng'] | ['Larsen, A L', 'Sánchez, N'] | ['The effect of spatial curvature on the classical and quantum strings'] | ['Particle Physics - Theory'] | ['string model', 'quantization', 'space-time, effect', 'approximation, quasiclassical', 'numerical calculations'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501102'] | ["We study the effects of the spatial curvature on the classical and quantum string dynamics. We find the general solution of the circular string motion in static Robertson-Walker spacetimes with closed or open sections. This is given closely and completely in terms of elliptic functions. The physical properties, strin... | ['1995-01-24'] |
16,197 | ['eng'] | ['Larsen, A L', 'Sánchez, N'] | ['New classes of exact multi-string solutions in curved spacetimes'] | ['Particle Physics - Theory'] | ['string model', 'field equations, solution', 'space-time, de Sitter', 'space-time, anti-de Sitter', 'black hole', 'numerical calculations'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501101'] | ['We find new classes of {\\it exact} string solutions in a variety of curved backgrounds. They include stationary and dynamical (open, closed, straight, finitely and infinitely long) strings as well as {\\it multi-string} solutions, in terms of elliptic functions. The physical properties, string length, energy and pre... | ['1995-01-24'] |
16,198 | ['eng'] | ['Lusanna, L'] | ["Hamiltonian constraints and Dirac's observables"] | ['Particle Physics - Theory'] | ['talk', 'particle, relativistic', 'field theory', 'relativity theory, general', 'quantization, constraint', 'Hamiltonian formalism', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501112'] | ["A review is given of the presymplectic approach to relativistic physical systems and of the determination of their Dirac's observables. After relativistic mechanics and Nambu string, the Dirac's observables of Yang-Mills theory with fermions are given for the case of massless vector bosons (like in QED). A Dirac-Yuka... | ['1995-01-25'] |
16,199 | ['eng'] | ['Distler, Jacques', 'Kachru, S'] | ['Duality of (0,2) string vacua'] | ['Particle Physics - Theory'] | ['string model, heterotic', 'vacuum state', 'moduli space', 'duality', 'field theory, Calabi-Yau', 'Landau-Ginzburg model', 'coupling, Yukawa', 'Yukawa, coupling'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9501111'] | ['We discuss a duality of (0,2) heterotic string vacua which implies that certain pairs of (0,2) Calabi-Yau compactifications on topologically distinct target manifolds yield identical string theories. Some complex structure moduli in one model are interpreted in the dual model as deforming the holomorphic structure of... | ['1995-01-25'] |
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