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15,500
['eng']
['Kauffmann, S K']
['Self-gravitational correction of the "vacuum polarization" Feynman diagram using full Einstein equation propagation of the intermediate virtual gravitons']
['Particle Physics - Theory']
['quantum electrodynamics', 'vacuum polarization', 'radiative correction, higher-order', 'Feynman graph', 'tensor, energy-momentum', 'gravitation, correction', 'Einstein equation', 'postulated particle, graviton', 'exchange, graviton', 'graviton, exchange', 'renormalization']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505191']
['The self-gravitational correction of the ultraviolet-divergent second- order "vacuum polarization" radiative correction insertion Feynman diagram is carried out using full, self-consistent Einstein equation propagation of the intermediate virtual gravitons, which takes into account their important non-linear interact...
['1995-06-01']
15,501
['eng']
['Sakaguchi, M']
['Four-dimensional N=2(4) superstring backgrounds and the real heavens']
['Particle Physics - Theory']
['string model', 'supersymmetry', 'background field', 'instanton', 'field theory, Kaehler', 'dilaton', 'torsion', 'field equations, Toda', 'renormalization group, beta function']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505177']
["We study N=2(4) superstring backgrounds which are four-dimensional non-\\Kahlerian with non-trivial dilaton and torsion fields. In particular we consider the case that the backgrounds possess at least one U(1) isometry and are characterized by the continual Toda equation and the Laplace equation. We obtain a string b...
['1995-05-30']
15,502
['eng']
['La, H S']
['Massive dilaton and topological gravity']
['Particle Physics - Theory']
['gravitation', 'field theory, dilaton', 'field theory, topological', 'dimension, 2', 'symmetry breaking, Weyl', 'tensor, energy-momentum', 'mass, dependence', 'dependence, mass', 'effective action', 'approximation, quasiclassical', 'renormalization']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505176']
["A model in which the massive dilaton is introduced by minimally extending the two dimensional topological gravity is studied semi-classically. The theory is no longer topological because of the explicit Weyl scale symmetry breaking. Due to the dilaton the semiclassical stress-energy tensor gets renormalized and it is...
['1995-05-30']
15,503
['eng']
['Grosse, Harald', 'Klimcík, C', 'Presnajder, P']
['Towards finite quantum field theory in non-commutative geometry']
['Particle Physics - Theory']
['field theory, scalar', 'field theory, finite', 'space-time, sphere', 'differential geometry, noncommutative', 'quantization', 'path integral', 'regularization']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505175']
['We describe the self-interacting scalar field on the truncated sphere and we perform the quantization using the functional (path) integral approach. The theory posseses a full symmetry with respect to the isometries of the sphere. We explicitely show that the model is finite and the UV-regularization automatically ta...
['1995-05-30']
15,504
['eng']
['De Jonghe, F', 'Termonia, P', 'Troost, W', 'Vandoren, S']
['An alternative BRST operator for topological Landau-Ginzburg models']
['Particle Physics - Theory']
['field theory, conformal', 'field theory, topological', 'dimension, 2', 'Landau-Ginzburg model', 'operator, Becchi-Rouet-Stora', 'tensor, energy-momentum', 'ghost', 'cohomology']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505174']
["We propose a new BRST operator for the B-twist of N=2 Landau-Ginzburg (LG) models. It solves the problem of the fractional ghost numbers of Vafa's old BRST operator and shows how the model is obtained by gauge fixing a zero action. An essential role is played by the anti-BRST operator,which is given by one of the sup...
['1995-05-30']
15,505
['eng']
['Barnich, G', 'Brandt, F', 'Henneaux, M']
['Local BRST cohomology in Einstein-Yang-Mills theory']
['Particle Physics - Theory']
['relativity theory, general', 'gauge field theory, Yang-Mills', 'transformation, Becchi-Rouet-Stora', 'cohomology', 'differential forms', 'current, conservation law', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505173']
['We analyse in detail the local BRST cohomology in Einstein-Yang-Mills theory using the antifield formalism. We do not restrict the Lagrangian to be the sum of the standard Hilbert and Yang-Mills Lagrangians, but allow for more general diffeomorphism and gauge invariant actions. The analysis is carried out in all spac...
['1995-05-30']
15,506
['eng']
['Floreanini, R', 'Percacci, R']
['The heat-kernel and the average effective potential']
['Particle Physics - Theory']
['effective action, heat kernel', 'field theory, scalar', 'gravitation', 'renormalization group', 'effective potential', 'inflationary universe', 'space-time']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505172']
['We discuss the definition of the average effective action in terms of the heat-kernel. As an example we examine a model describing a self-interacting scalar field, both in flat and curved background, and study the renormalization group flow of some of the parameters characterizing its effective potential. Some implic...
['1995-05-30']
15,507
['eng']
['Burgess, C P', 'Derendinger, J P', 'Quevedo, F', 'Quirós, M']
['On gaugino condensation with field-dependent gauge couplings']
['Particle Physics - Theory']
['gauge field theory, Yang-Mills', 'supersymmetry', 'path integral', 'effective action', 'perturbation theory, higher-order', 'gaugino, condensation', 'supergravity', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505171']
['We study in detail gaugino condensation in globally and locally supersymmetric Yang-Mills theories. We focus on models for which gauge-neutral matter couples to the gauge bosons only through nonminimal gauge kinetic terms, for the cases of one and several condensing gauge groups. Using only symmetry arguments, the lo...
['1995-05-29']
15,508
['eng']
['Schwarz, J H']
['Classical duality symmetries in two dimensions']
['Particle Physics - Theory']
['talk, Los Angeles 1995/03/13', 'duality, transformation', 'dimension, 2', 'model, chiral', 'coset space', 'current algebra']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505170']
['Many two-dimensional classical field theories have hidden symmetries that form an infinite-dimensional algebra. For those examples that correspond to effective descriptions of compactified superstring theories, the duality group is expected to be a large discrete subgroup of the hidden symmetry group. With this motiv...
['1995-05-29']
15,509
['eng']
['De Souza, M M']
['The Lorentz-Dirac equation and the structure of spacetime']
['Particle Physics - Theory']
['space-time, symmetry', 'electromagnetic interaction', 'particle, relativistic', 'field equations', 'boundary condition']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505169']
['A new interpretation of the causality implementation in the Lienard-Wiechert solution raises new doubts against the validity of the Lorentz-Dirac equation and the limits of validity of the Minkowski structure of spacetime.']
['1995-05-29']
15,510
['eng']
['Rama, S K', 'Ghosh, S']
['Short distance repulsive gravity as a consequence of non trivial PPN parameters $\\beta$ and $\\gamma$']
['Particle Physics - Theory']
['postulated particle, graviton', 'field theory, dilaton', 'gravitation', 'black hole', 'potential', 'astrophysics, matter']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505167']
['We look for a graviton-dilaton theory which can predict non trivial values of the PPN parameters \\beta and/or \\gamma for a charge neutral point star, without any naked singularity. With the potential for dilaton (\\phi) set to zero, it contains one arbitrary function \\psi(\\phi). By studying the static spherically...
['1995-05-29']
15,511
['eng']
['Kunihiro, T']
['A geometrical formulation of the renormalization group method for global analysis']
['Particle Physics - Theory']
['renormalization group', 'differential equations, solution', 'perturbation theory', 'phi**n model, 4']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505166']
['On the basis of the classical theory of envelope,we formulate the renormalization group (RG) method for global analysis, recently proposed by Goldenfeld et al. It is clarified why the RG equation improves things.']
['1995-05-29']
15,512
['eng']
['Kashiwa, T']
['A general form of the constraints in the path integral formula']
['Particle Physics - Theory']
['mechanics, classical', 'any-dimensional', 'Hamiltonian formalism', 'constraint', 'path integral']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505165']
['A form of the constraints, specifying a D-dimensional manifold embedded in D+1 dimensional Euclidean space, is discussed in the path integral formula given by a time discretization. Although the mid-point prescription is privileged in the sphere S^D case, it is more involved in generic cases. An interpretation on the...
['1995-05-29']
15,513
['eng']
['Alfaro, J', 'Damgaard, P H']
['Symmetries and the antibracket']
['Particle Physics - Theory']
['quantization, Batalin-Vilkovisky', 'path integral, measure', 'transformation, Becchi-Rouet-Stora', 'symmetry', 'differential geometry', 'Dyson-Schwinger equation', 'Ward identity']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505156']
['Requiring that a Lagrangian path integral leads to certain identities (Ward identities in a broad sense) can be formulated in a general BRST language, if necessary by the use of collective fields. The condition of BRST symmetry can then be expressed with the help of the antibracket, and suitable generalizations there...
['1995-05-26']
15,514
['eng']
['Hosotani, Y']
['More about the massive multi-flavor Schwinger model']
['Particle Physics - Theory']
['talk', 'Schwinger model, massive', 'massive, Schwinger model', 'fermion, flavor', 'dimension, 2', 'space-time, S(1)', 'Hamiltonian formalism', 'bosonization']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505168']
['The massive multi-flavor Schwinger model on a circle is reduced to a finite dimensional quantum mechanics problem. The model sensitively depends on the parameter mL|\\cos\\onehalf\\theta| where m, L, and \\theta are a typical fermion mass, the volume, and the vacuum angle, respectively.']
['1995-05-29']
15,515
['eng']
['Bordag, M', 'Geyer, B', 'Kirsten, K', 'Elizalde, E']
['Zeta function determinant of the Laplace operator on the D-dimensional ball']
['Particle Physics - Theory']
['Klein-Gordon equation', 'space-time', 'boundary condition', 'path integral', 'operator, Laplace', 'operator, determinant', 'regularization, zeta function', 'numerical calculations']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505157']
['We present a direct approach for the calculation of functional determinants of the Laplace operator on balls. Dirichlet and Robin boundary conditions are considered. Using this approach, formulas for any value of the dimension, D, of the ball, can be obtained quite easily. Explicit results are presented here for dime...
['1995-05-26']
15,516
['eng']
['Rubakov, V A']
['Modelling macroscopic and baby universes by fundamental strings']
['Particle Physics - Theory']
['astrophysics, model', 'dimension, 2', 'string model, closed', 'coherence, decoherence', 'zero mode', 'postulated particle, graviton', 'postulated particle, tachyon', 'graviton, emission', 'emission, graviton', 'tachyon, emission', 'emission, tachyon']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505159']
['We develop a model of (1+1)-dimensional parent and baby universes as macroscopic and microscopic fundamental closed strings. We argue, on the basis of understanding of strings from the point of view of target D-dimensional space-time, that processes involving baby universes/wormholes not only induce c-number "\\alpha...
['1995-05-26']
15,517
['eng']
['Cangemi, D', 'Jackiw, R W', 'Zwiebach, B']
['Physical states in matter-coupled dilaton gravity']
['Particle Physics - Theory']
['gravitation, dilaton', 'dimension, 2', 'coupling, matter', 'matter, coupling', 'quantization, Becchi-Rouet-Stora', 'algebra, Virasoro', 'gauge field theory', 'field theory, scalar', 'anomaly', 'constraint', 'field theory, conformal', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505161']
['We revisit the quantization of matter-coupled, two-dimensional dilaton gravity. At the classical level and with a cosmological term, a series of field transformations leads to a set of free fields of indefinite signature. Without matter the system is represented by two scalar fields of opposite signature. With a part...
['1995-05-26']
15,518
['eng']
['Ferrara, Sergio', 'Harvey, J A', 'Strominger, A', 'Vafa, C']
['Second-quantized mirror symmetry']
['Particle Physics - Theory']
['string model, heterotic', 'field theory, Calabi-Yau', 'duality, transformation', 'symmetry, mirror', 'quantization, 2', 'field theory, soliton']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505162']
['We propose and give strong evidence for a duality relating Type II theories on Calabi-Yau spaces and heterotic strings on K3 \\times T^2, both of which have N=2 spacetime supersymmetry. Entries in the dictionary relating the dual theories are derived from an analysis of the soliton string worldsheet in the context of...
['1995-05-26']
15,519
['eng']
['Berglund, P', 'Candelas, P', 'De la Ossa, X C', 'Derrick, E', 'Distler, Jacques', 'Hübsch, T']
['On the instanton contributions to the masses and couplings of E$_{6}$ singlets']
['Particle Physics - Theory']
['string model, heterotic', 'effective action', 'grand unified theory, E(6)', 'field theory, instanton', 'mass spectrum', 'coupling, Yukawa', 'Yukawa, coupling', 'geometry, algebra']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505164']
["We consider the gauge neutral matter in the low--energy effective action for string theory compactification on a \\cym\\ with (2,2) world--sheet supersymmetry. At the classical level these states (the \\sing's of E_6) correspond to the cohomology group H^1(\\M,{\\rm End}\\>T). We examine the first order contribution ...
['1995-05-26']
15,520
['eng']
['De Vega, H J']
['Strings in cosmological spacetimes and their back-reaction']
['Particle Physics - Theory']
['talk, Los Angeles 1995/03/13', 'string model', 'quantum gravity', 'astrophysics, model', 'Einstein equation, solution', 'tensor, energy-momentum', 'inflationary universe', 'effect, back reaction']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505158']
['This is a short review on strings in curved spacetimes. We start by recalling the classical and quantum string behaviour in singular plane waves backgrounds. We then report on the string behaviour in cosmological spacetimes (FRW, de Sitter, power inflation) which is by now largerly understood. Recent progress on self...
['1995-05-26']
15,521
['eng']
['Kanemura, S', 'Matsushita, T']
['Thermodynamics in 2+1 dimensional QED with Chern-Simons term']
['Particle Physics - Theory']
['gauge field theory, U(1)', 'Chern-Simons term', 'dimension, 3', 'fermion', 'finite temperature', 'vacuum polarization', 'effective potential', 'numerical calculations']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505146']
["It is known that in the 2+1 dimensional quantum electrodynamics with Chern-Simons term, spontaneous magnetic field induces Lorentz symmetry breaking. In this paper, thermodynamical characters, especially the phase structure of this model are discussed. To see the behavior of the spontaneous magnetic field at finite t...
['1995-05-25']
15,522
['eng']
['Yoshida, A']
['A general relativistic model for confinement in SU(2) Yang-Mills theory']
['Particle Physics - Theory']
['gauge field theory, SU(2)', 'charged particle', 'field equations, solution', 'confinement', 'numerical calculations']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505160']
['In this paper we present a model of confinement based on an analogy with the confinement mechanism of the Schwarzschild solution of general relativity. Using recently discovered exact, Schwarzschild-like solutions of the SU(2) Yang-Mills-Higgs equations we study the behaviour of a scalar, SU(2) charged test particle ...
['1995-05-26']
15,523
['eng']
['Davis, S']
['Infinite-genus surfaces and the universal grassmannian']
['Particle Physics - Theory']
['field theory, conformal', 'dimension, 2', 'fermion', 'Riemann surfaces, higher-order', 'phase space, Hilbert space', 'correlation function']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505163']
['Correlation functions can be calculated on Riemann surfaces using the operator formalism. The state in the Hilbert space of the free field theory on the punctured disc, corresponding to the Riemann surface, may also be constructed at infinite genus, verifying the inclusion of these surfaces in the Grassmannian. In pa...
['1995-05-26']
15,524
['eng']
['Antonov, A V', 'Belov, A A', 'Chaltikian, K D']
['Lattice conformal theories and their integrable perturbations']
['Particle Physics - Theory']
['field theory, conformal', 'lattice field theory', 'Wess-Zumino-Witten model', 'field theory, Toda', 'perturbation theory', 'symmetry, chiral', 'integrability', 'algebra, Kac-Moody', 'Kadomtsev-Petviashvili equation, hierarchy', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505155']
['We consider lattice analogues of some conformal theories, including WZW and Toda models. We describe discrete versions of Drinfeld-Sokolov reduction and Sugawara construction for the WZW model. We formulate perturbation theory in chiral sector. We describe the spaces of Integrals of Motion in the perturbed theories. ...
['1995-05-25']
15,525
['eng']
['Crewther, R J']
['Introduction to quantum field theory']
['Particle Physics - Theory']
['lectures, Canberra 1994', 'quantization', 'Hamiltonian formalism', 'electromagnetic field', 'operator, algebra', 'path integral, Euclidean', 'perturbation theory', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505152']
['Even the uninitiated will know that Quantum Field Theory cannot be introduced systematically in just four lectures. I try to give a reasonably connected outline of part of it, from second quantization to the path-integral technique in Euclidean space, where there is an immediate connection with the rules for Feynman ...
['1995-05-25']
15,526
['eng']
['Klemm, A D', 'Lerche, Wolfgang', 'Theisen, Stefan J']
['Nonperturbative effective actions of N=2 supersymmetric gauge theories']
['Particle Physics - Theory']
['gauge field theory, SU(N)', 'gauge field theory, SU(2)', 'gauge field theory, SU(3)', 'supersymmetry', 'effective action, nonperturbative', 'geometry, algebra']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505150']
['We elaborate on our previous work on N=2 supersymmetric Yang-Mills theory. In particular, we show how to explicitly determine the low energy quantum effective action for G=SU(3) from the underlying hyperelliptic Riemann surface, and calculate the leading instanton corrections. This is done by solving Picard-Fuchs equ...
['1995-05-25']
15,527
['eng']
['Ramallo, A V', 'Sánchez de Santos, J M']
['Topological matter, mirror symmetry and non-critical (super)strings']
['Particle Physics - Theory']
['field theory, conformal', 'dimension, 2', 'field theory, topological', 'supersymmetry', 'string model', 'anomaly, Virasoro', 'transformation, Becchi-Rouet-Stora']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505149']
['We study the realization of the (super) conformal topological symmetry in two-dimensional field theories. The mirror automorphism of the topological algebra is represented as a reflection in the space of fields. As a consequence, a double BRST structure for topological matter theories is found. It is shown that the i...
['1995-05-25']
15,528
['eng']
['Pinkstone, I R']
['Structure of dualities in bosonic string theory']
['Particle Physics - Theory']
['string model, boson', 'string, closed', 'effective action', 'duality, transformation']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505147']
["The nature of duality symmetries is explored in closed bosonic string theory, particularly in the case of a four-dimensional target space admitting a one-parameter isometry. It appears that the S-duality of string theory behaves analogously to the Ehlers' symmetry of General Relativity. Furthermore, it is demonstrate...
['1995-05-25']
15,529
['eng']
['Rama, S K']
['Implications of some static spherically symmetric graviton-dilaton solutions in Brans-Dicke and low energy string theory']
['Particle Physics - Theory']
['talk, Shantiniketan 1994/12/21', 'string model', 'Brans-Dicke model', 'postulated particle, graviton', 'postulated particle, dilaton', 'astrophysics, fundamental constant', 'space-time, singularity', 'symmetry, rotational']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505151']
['Analysing the static, spherically symmetric graviton-dilaton solutions in low energy string and Brans-Dicke theory, we find the following. For a charge neutral point star, these theories cannot predict non trivial PPN parameters, \\beta and \\gamma, without introducing naked singularities. We then couple a cosmologic...
['1995-05-25']
15,530
['eng']
['Navarro-Salas, J', 'Navarro, M', 'Talavera, C F']
['Weyl invariance and black hole evaporation']
['Particle Physics - Theory']
['black hole, quasiclassical', 'dimension, 2', 'invariance, Weyl', 'invariance, diffeomorphism', 'matter, conformal', 'effective action', 'anomaly, Virasoro', 'radiation, Hawking', 'gravitation, dilaton']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505139']
['We consider the semiclassical dynamics of CGHS black holes with a Weyl-invariant effective action for conformal matter. The trace anomaly of Polyakov effective action is converted into the Virasoro anomaly thus leading to the same flux of Hawking radiation. The covariance of semiclassical equations can be restored th...
['1995-05-24']
15,531
['eng']
['Kauffmann, S K']
['Unique closed-form quantization via generalized path integrals or by natural extension of the standard canonical recipe']
['Particle Physics - Theory']
['path integral', 'transformation, phase space', 'Hamiltonian formalism', 'quantization']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505189']
['The Feynman path integral is extended to arbitrary one-parameter continuous canonical transformations, and a crucial technical refinement is made in its definition. One thereupon obtains an elegant formula for a unique quantum representation of the transformation generator which is an arbitrary classical dynamical va...
['1995-06-01']
15,532
['eng']
['Plyushchay, M S']
['Deformed Heisenberg algebra, fractional spin fields and supersymmetry without fermions']
['Particle Physics - Theory']
['algebra, Heisenberg', 'algebra, deformation', 'spin, fractional', 'fractional, spin', 'supersymmetry', 'dimension, 3', 'postulated particle, anyon', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9601116']
["Within a group-theoretical approach to the description of (2+1)-dimensional anyons, the minimal covariant set of linear differential equations is constructed for the fractional spin fields with the help of the deformed Heisenberg algebra (DHA), [a^{-},a^{+}]=1+\\nu K, involving the Klein operator K, \\{K,a^{\\pm}\\}=...
['1996-01-23']
15,533
['eng']
['Tseytlin, Arkady A']
['Closed strings in uniform magnetic field backgrounds']
['Particle Physics - Theory']
['talk, Los Angeles 1995/03/13', 'string model, closed', 'magnetic field, background', 'symmetry, axial', 'flux tube', 'model, conformal', 'Hamiltonian formalism', 'partition function', 'operator, Virasoro', 'quantization', 'Einstein-Maxwell equation', 'spectra, string', 'string, spectra', 'postulated particle, tachyon...
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505145']
['We consider a class of conformal models describing closed strings in axially symmetric stationary magnetic flux tube backgrounds. These models are closed string analogs of the Landau model of a particle in a magnetic field or the model of an open string in a constant magnetic field. They are interesting examples of s...
['1995-05-24']
15,534
['eng']
['Bauer, M', 'Freedman, Daniel Z']
['Spatial geometry of non-abelian gauge theory in (2+1) dimensions']
['Particle Physics - Theory']
['gauge field theory, SU(2)', 'dimension, 3', 'Hamiltonian formalism', 'phase space', 'wave function', 'Gauss law', 'differential geometry']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505144']
['The Hamiltonian dynamics of \\(2 + 1\\) dimensional Yang-Mills theory with gauge group SU(2) is reformulated in gauge invariant, geometric variables, as in earlier work on the \\(3 + 1\\) dimensional case. Physical states in electric field representation have the product form \\(\\Psi_{\\mathrm{phys}} [E^{a i}] = \\e...
['1995-05-24']
15,535
['eng']
['Samtleben, J A H']
['Quantum version of the N=8 superconformal algebra']
['Particle Physics - Theory']
['algebra, conformal', 'supersymmetry, algebra', 'operator product expansion', 'quantum algebra', 'operator, Becchi-Rouet-Stora', 'algebra, representation', 'linear spaces, Fock space']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505143']
['The quantized form of the soft N=8 superconformal algebra is investigated. Its operator product expansions are shown to exhibit a one-parameter-class of (soft) anomalies, which may be arbitrarily shifted by certain suitable quantum corrections of the generators. In particular, the BRST operator can be constructed and...
['1995-05-24']
15,536
['eng']
['Ivanov, E', 'Krivonos, S', 'Sorin, A']
['N=2 super-W$_{3}^{(2}$) algebra in superfields']
['Particle Physics - Theory']
['algebra, W(3)', 'supersymmetry, superfield', 'algebra, representation', 'current algebra']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505142']
['We present a manifestly N=2 supersymmetric formulation of N=2 super-W_3^{(2)} algebra (its classical version) in terms of the spin 1 unconstrained supercurrent generating a N=2 superconformal subalgebra and the spins 1/2, 2 bosonic and spins 1/2, 2 fermionic constrained supercurrents. We consider a superfield reducti...
['1995-05-24']
15,537
['eng']
['Nergiz, S', 'Saçlioglu, C']
['A quasiperiodic Gibbons-Hawking metric and spacetime foam']
['Particle Physics - Theory']
['space-time, duality', 'quantum gravity', 'field theory, instanton', 'geometry, algebra']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505141']
['We present a quasiperiodic self-dual metric of the Gibbons--Hawking type with one gravitational instanton per spacetime cell. The solution, based on an adaptation of Weierstrassian \\zeta and \\sigma functions to three dimensions, conforms to a definition of spacetime foam given by Hawking.']
['1995-05-24']
15,538
['eng']
['Bonora, L', 'Xiong, C S']
['Topological field theory interpretations and LG representation of c=1 string theory']
['Particle Physics - Theory']
['string model', 'central charge, 1', 'field theory, conformal', 'dimension, 2', 'field theory, topological', 'Landau-Ginzburg model', 'operator, algebra', 'correlation function', 'lattice, Toda', 'perturbation theory']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505140']
['We analyze the topological nature of c=1 string theory at the self--dual radius. We find that it admits two distinct topological field theory structures characterized by two different puncture operators. We show it first in the unperturbed theory in which the only parameter is the cosmological constant, then in the p...
['1995-05-24']
15,539
['eng']
['Kim, J D', 'Cho Hyo Sung']
['Boundary reflection matrix for D$_{4}^{(1}$) affine Toda field theory']
['Particle Physics - Theory']
['field theory, Toda', 'field theory, affine', 'dimension, 2', 'boundary condition', 'propagator', 'perturbation theory, higher-order', 'approximation, strong coupling', 'strong coupling, approximation', 'approximation, weak coupling', 'weak coupling, approximation', 'duality, transformation']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505138']
["We present one loop boundary reflection matrix for d_4^{(1)} Toda field theory defined on a half line with the Neumann boundary condition. This result demonstrates a nontrivial cancellation of non-meromorphic terms which are present when the model has a particle spectrum with more than one mass. Using this result, we...
['1995-05-24']
15,540
['eng']
['Cicuta, M', 'Molinari, L', 'Stramaglia, S']
['Universality of the tearing phase in matrix models']
['Particle Physics - Theory']
['matrix model', 'partition function', 'critical phenomena', 'numerical calculations', 'expansion 1/N']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505137']
['The spontaneous symmetry breaking associated to the tearing of a random surface, where large dynamical holes fill the surface, was recently analized obtaining a non-universal critical exponent on a border phase. Here the issue of universality is explained by an independent analysis. The one hole sector of the model i...
['1995-05-24']
15,541
['eng']
['Avan, J', 'Babelon, O', 'Billey, E']
['The Gervais-Neveu-Felder equation and the quantum Calogero-Moser systems']
['Particle Physics - Theory']
['mechanics, classical', 'integrability', 'R-matrix', 'Yang-Baxter equation', 'field theory, conformal', 'Knizhnik-Zamolodchikov equation', 'field theory, Toda', 'operator, algebra', 'Hamiltonian formalism']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505091']
["We quantize the spin Calogero-Moser model in the R-matrix formalism. The quantum R-matrix of the model is dynamical. This R-matrix has already appeared in Gervais-Neveu's quantization of Toda field theory and in Felder's quantization of the Knizhnik-Zamolodchikov-Bernard equation."]
['1995-05-17']
15,542
['eng']
['Amelino-Camelia, G', 'Bak, D', 'Seminara, D']
['Area-preserving structure and anomalies in 1+1-dimensional quantum gravity']
['Particle Physics - Theory']
['field theory, scalar', 'gravitation, induced', 'dimension, 2', 'path integral', 'anomaly', 'Ward identity', 'transformation, Weyl', 'transformation, diffeomorphism', 'dependence, gauge', 'Hamiltonian formalism']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505136']
['We investigate the gauge-independent Hamiltonian formulation and the anomalous Ward identities of a matter-induced 1+1-dimensional gravity theory invariant under Weyl transformations and area-preserving diffeomorphisms, and compare the results to the ones for the conventional diffeomorphism-invariant theory. We find ...
['1995-05-23']
15,543
['eng']
['Gómez, C', 'López, E']
['From quantum monodromy to duality']
['Particle Physics - Theory']
['gauge field theory, SU(2)', 'supersymmetry', 'duality, transformation', 'renormalization group', 'geometry, algebra', 'gravitation', 'group theory, monodromy']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505135']
['For N\\!=\\!2 SUSY theories with non vanishing \\beta-function and a one dimensional quantum moduli, we study the representation on the special coordinates, of the group of motions on the quantum moduli defined by \\Gamma_W\\!=\\!Sl(2;Z)\\!/\\!\\Gamma_M, with \\Gamma_M the quantum monodromy group. \\Gamma_W contains ...
['1995-05-23']
15,544
['eng']
['Sathiapalan, B']
['A comparison of the proper time equation and the renormalization group $\\beta$-function in string theory']
['Particle Physics - Theory']
['string model', 'dependence, gauge', 'renormalization group, beta function', 'gauge field theory, Yang-Mills', 'perturbation theory, higher-order']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505134']
["It is known that there is a proportionality factor relating the \\beta-function and the equations of motion viz. the Zamolodchikov metric. Usually this factor has to be obtained by other methods. The proper time equation, on the other hand, is the full equation of motion. We explain the reasons for this and illustrat...
['1995-05-23']
15,545
['eng']
['Kojima, S', 'Sakai, N', 'Tanii, Y']
['Dilaton gravity coupled to a nonlinear $\\sigma$ model in 2+$\\varepsilon$ dimensions']
['Particle Physics - Theory']
['gravitation', 'field theory, dilaton', 'sigma model, nonlinear', 'dimension, 2', 'epsilon expansion', 'renormalization group, beta function', 'critical phenomena']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505132']
['Quantum theory of dilaton gravity coupled to a nonlinear sigma model with a maximally symmetric target space is studied in 2+\\epsilon dimensions. The ultraviolet stable fixed point for the curvature of the nonlinear sigma model demands a new fixed point theory for the dilaton coupling function. The fixed point of th...
['1995-05-23']
15,546
['eng']
['Maeder, J', 'Rühl, Werner']
['Double scaling limits, Airy functions and multicritical behaviour in O(N) vector sigma models']
['Particle Physics - Theory']
['sigma model, nonlinear', 'symmetry, O(N)', 'path integral', 'scaling', 'critical phenomena', 'any-dimensional', 'expansion 1/N']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505131']
['O(N) vector sigma models possessing catastrophes in their action are studied. Coupling the limit N --> infinity with an appropriate scaling behaviour of the coupling constants, the partition function develops a singular factor. This is a generalized Airy function in the case of spacetime dimension zero and the partit...
['1995-05-23']
15,547
['eng']
['Buchholz, D A']
['Phase space properties of local observables and structure of scaling limits']
['Particle Physics - Theory']
['axiomatic field theory', 'operator, algebra', 'correlation function', 'phase space', 'scaling']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505130']
['For any given algebra of local observables in relativistic quantum field theory there exists an associated scaling algebra which permits one to introduce renormalization group transformations and to construct the scaling (short distance) limit of the theory. On the basis of this result it is discussed how the phase s...
['1995-05-23']
15,548
['eng']
['Aoyama, S', 'Kodama, Y']
['Topological Landau-Ginzburg theory with a rational potential and the dispersionless KP hierarchy']
['Particle Physics - Theory']
['Landau-Ginzburg model', 'field theory, topological', 'potential', 'Kadomtsev-Petviashvili equation, hierarchy', 'n-point function', 'differential equations, string', 'critical phenomena']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505122']
['Based on the dispersionless KP (dKP) theory, we give a comprehensive study of the topological Landau-Ginzburg (LG) theory characterized by a rational potential. Writing the dKP hierarchy in a general form, we find that the hierarchy naturally includes the dispersionless (continuous) limit of Toda hierarchy and its ge...
['1995-05-22']
15,549
['eng']
['Tseytlin, Arkady A']
['On gauge theories for non-semisimple groups']
['Particle Physics - Theory']
['gauge field theory, Yang-Mills', 'group theory', 'Chern-Simons term', 'Wess-Zumino-Witten model', 'quantization', 'perturbation theory, higher-order', 'renormalization', 'effective action']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505129']
["We consider analogs of Yang-Mills theories for non-semisimple real Lie algebras which admit invariant non-degenerate metrics. These 4-dimensional theories have many similarities with corresponding WZW models in 2 dimensions and Chern-Simons theories in 3 dimensions. In particular, the quantum effective action contain...
['1995-05-22']
15,550
['eng']
['Imbimbo, C', 'Mukhi, S']
['The topological matrix model of c=1 string']
['Particle Physics - Theory']
['string model', 'algebra, W(infinity)', 'central charge, 1', 'matrix model, topological', 'partition function', 'effective action', 'n-point function', 'Ward identity', 'coherent state']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505127']
['We derive a Kontsevich-type matrix model for the c=1 string directly from the W-infinity solution of the theory. The model that we obtain is different from previous proposals, which are proven to be incorrect. Our matrix model contains the Penner and Kontsevich cases, and we study its quantum effective action. The si...
['1995-05-22']
15,551
['eng']
['Guendelman, E I', 'Nissimov, Emil R', 'Pacheva, S']
["Volume-preserving diffeomorphisms' versus local gauge symmetry"]
['Particle Physics - Theory']
['transformation, gauge', 'transformation, diffeomorphism', 'field theory, scalar', 'fermion', 'mass generation']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505128']
["We present a new form of Quantum Electrodynamics where the photons are composites made out of zero-dimensional scalar ``primitives''. The r\\^{o}le of the local gauge symmetry is taken over by an {\\em infinite-dimensional global Noether symmetry} -- the group of volume-preserving (symplectic) diffeomorphisms of the ...
['1995-05-22']
15,552
['eng']
['Heyssler, M', 'Kalloniatis, A C']
['Constituent quark picture out of QCD in two dimensions']
['Particle Physics - Theory']
['gauge field theory, SU(2)', 'gauge field theory, SU(3)', 'fermion', 'dimension, 2', 'light cone gauge', 'phase space, Fock space', 'mass spectrum', 'numerical calculations']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505126']
["Using DLCQ as a nonperturbative method, we test Fock-space truncations in {\\rm QCD}_{1+1} by studying the mass spectra of hadrons in colour SU(2) and SU(3) at finite harmonic resolution K. We include q\\bar q q\\bar q states for mesons and up to qqq q\\bar q states for baryons. With this truncation, we give `predict...
['1995-05-22']
15,553
['eng']
['MacKay, N J']
['Fusion of SO(n) reflection matrices']
['Particle Physics - Theory']
['symmetry, SO(N)', 'Yang-Baxter equation', 'S-matrix', 'fusion']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505124']
['We examine the reflection matrix acting on the SO(N) vector multiplet and fuse it to obtain that acting on the rank two particle multiplet, and give its decomposition.']
['1995-05-22']
15,554
['eng']
['Clubok, K S', 'Halpern, M B']
['The generic world-sheet action of irrational conformal field theory']
['Particle Physics - Theory']
['talk, Los Angeles 1995/03/13', 'field theory, conformal', 'field theory, irrational', 'dimension, 2', 'field theory, action', 'algebra, Virasoro', 'operator product expansion']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505125']
['We review developments in the world-sheet action formulation of the generic irrational conformal field theory, including the non-linear and the linearized forms of the action. These systems form a large class of spin-two gauged WZW actions which exhibit exotic gravitational couplings. Integrating out the gravitationa...
['1995-05-22']
15,555
['eng']
['Billó, M', "D'Auria, R", 'Ferrara, Sergio', 'Fré, P', 'Soriani, P', 'Van Proeyen, A']
['R-symmetry and the topological twist of N=2 effective supergravities of heterotic strings']
['Particle Physics - Theory']
['string model, heterotic', 'gauge field theory, Yang-Mills', 'R parity', 'field theory, topological', 'multiplet, vector', 'vector, multiplet', 'ghost number', 'gravitation', 'field equations, instanton', 'supergravity', 'duality', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505123']
['We discuss R-symmetries in locally supersymmetric N=2 gauge theories coupled to hypermultiplets which can be thought of as effective theories of heterotic superstring models. In this type of supergravities a suitable off-shell R-symmetry exists which can be used to topologically twist the theory: the vector multiplet...
['1995-05-22']
15,556
['eng']
['Benedict, E', 'Pi, S Y']
['Entanglement entropy of nontrivial states']
['Particle Physics - Theory']
['black hole', 'entropy', 'phase space', 'coherent state', 'numerical calculations']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505121']
['We study the entanglement entropy arising from coherent states and one--particle states. We show that it is possible to define a finite entanglement entropy by subtracting the vacuum entropy from that of the considered states, when the unobserved region is the same.']
['1995-05-22']
15,557
['eng']
['Kreuzer, M', 'Skarke, H']
['Orbifolds with discrete torsion and mirror symmetry']
['Particle Physics - Theory']
['field theory, conformal', 'dimension, 2', 'supersymmetry', 'torsion, discrete', 'transformation, mirror', 'field theory, orbifold', 'field theory, torus', 'quantum group']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505120']
['For a large class of N=2 SCFTs, which includes minimal models and many \\s models on Calabi-Yau manifolds, the mirror theory can be obtained as an orbifold. We show that in such a situation the construction of the mirror can be extended to the presence of discrete torsions. In the case of the \\ZZ_2\\ex\\ZZ_2 torus o...
['1995-05-22']
15,558
['eng']
['Papadopoulos, G J']
['Elliptic monopoles and (4,0)-supersymmetric $\\sigma$ models with torsion']
['Particle Physics - Theory']
['sigma model, nonlinear', 'dimension, 2', 'supersymmetry, superfield', 'torsion', 'field theory, monopole', 'differential geometry']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505119']
['We explicitly construct the metric and torsion couplings of two-dimensional (4,0)-super\\-sym\\-metric sigma models with target space a four-manifold that are invariant under a U(1) symmetry generated by a tri-holomorphic Killing vector field that leaves in addition the torsion invariant. We show that the metric coup...
['1995-05-22']
15,559
['eng']
['Fernández-Pousa, C R', 'Gallas-Torreira, M V', 'Miramontes, J L', 'Sánchez-Guillén, J']
['Integrable systems and W-algebras']
['Particle Physics - Theory']
['talk, Sao Paulo 1995/02/05', 'differential equations, nonlinear', 'integrability', 'algebra, W(N)']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505118']
["The basic concepts underlying our analysis of {\\it W-algebras} as extended symmetries of integrable systems are summarized. The construction starts from the second hamiltonian structure of ``Generalized Drinfel'd-Sokolov'' hierarchies, and its correspondence with the A_1-embeddings is established, providing a rather...
['1995-05-22']
15,560
['eng']
['Wesolowski, D', 'Hosotani, Y']
['Spontaneous magnetization in Lorentz invariant theories']
['Particle Physics - Theory']
['gauge field theory, U(1)', 'dimension, 3', 'fermion, chiral', 'magnetic field', 'mass spectrum', 'perturbation theory, higher-order', 'regularization, zeta function']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505113']
['In a class of three-dimensional Abelian gauge theories with both light and heavy fermions, heavy chiral fermions can trigger dynamical generation of a magnetic field, leading to the spontaneous breaking of the Lorentz invaiance. Finite masses of light fermions tend to restore the Lorentz invariance.']
['1995-05-19']
15,561
['eng']
['Argyres, Philip C', 'Plesser, M R', 'Shapere, A D']
['The Coulomb phase of N=2 supersymmetric QCD']
['Particle Physics - Theory']
['gauge field theory, SU(N)', 'supersymmetry', 'fermion, flavor', 'effective Lagrangian', 'nonperturbative', 'approximation, strong coupling', 'strong coupling, approximation', 'critical phenomena', 'symmetry breaking', 'geometry, algebra']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505100']
['We present an explicit non-perturbative solution of N=2 supersymmetric SU(N_c) gauge theory with N_f \\le 2N_c flavors generalizing results of Seiberg and Witten for N_c=2.']
['1995-05-18']
15,562
['eng']
['Grassi, P A']
['Stability and renormalization of Yang-Mills theory with background field method']
['Particle Physics - Theory']
['gauge field theory, SU(N)', 'background field', 'path integral', 'effective action', 'regularization', 'renormalization', 'Ward identity', 'stability', 'radiative correction', 'Slavnov identity', 'invariance, Becchi-Rouet-Stora', 'anomaly']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505101']
['In this paper the stability and the renormalizability of Yang-Mills theory in the Background Field Gauge are studied. By means of Ward Identities of Background gauge invariance and Slavnov-Taylor Identities the stability of the classical model is proved and, in a regularization independent way, its renormalizability ...
['1995-05-18']
15,563
['eng']
['Gliozzi, F', 'Tateo, R']
['Thermodynamic Bethe ansatz and threefold triangulations']
['Particle Physics - Theory']
['dimension, 2', 'energy, ground state', 'Bethe ansatz', 'integrability', 'sine-Gordon model', 'space-time, triangulation', 'dimension, 3']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505102']
['In the Thermodynamic Bethe Ansatz approach to 2D integrable, ADE-related quantum field theories one derives a set of algebraic functional equations (Y-system) which play a prominent role. These equations are mapped into the problem of finding finite triangulations of certain 3D manifolds. This mapping allows us to fi...
['1995-05-18']
15,564
['eng']
['Ren, H']
['WZW model based on the extended de Sitter group']
['Particle Physics - Theory']
['field theory, conformal', 'dimension, 2', 'Wess-Zumino-Witten model', 'group theory, de Sitter', 'algebra, Virasoro', 'renormalization group, beta function']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505103']
['We study the WZW model based on the centrally extended 2D de Sitter algebra. We obtain the spacetime metric and its explicitly conformally flat expression. The symmetries of the spacetime are found by identifying the Killing vectors with the group generators. The energy-momentum tensor obtained from the non-semi-simp...
['1995-05-18']
15,565
['eng']
['Burda, Z', 'Kownacki, J P', 'Krzywicki, A']
['Towards a non-perturbative renormalization of euclidean quantum gravity']
['Particle Physics - Theory']
['quantum gravity, Euclidean', 'lattice field theory', 'dimension, 2', 'dimension, 4', 'renormalization group, beta function', 'renormalization, fixed point', 'numerical calculations, Monte Carlo']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505104']
['A real space renormalization group technique, based on the hierarchical baby-universe structure of a typical dynamically triangulated manifold, is used to study scaling properties of 2d and 4d lattice quantum gravity. In 4d, the \\beta-function is defined and calculated numerically. An evidence for the existence of a...
['1995-05-18']
15,566
['eng']
['Kachru, S', 'Vafa, C']
['Exact results for N=2 compactifications of heterotic strings']
['Particle Physics - Theory']
['string model, heterotic', 'spontaneous compactification', 'field theory, Calabi-Yau', 'moduli space', 'duality', 'geometry, algebra', 'group theory, representation']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505105']
['We search for N=2, d=4 theories which can be realized both as heterotic string compactifications on K_{3}\\times T^{2} and as type II string compactifications on Calabi-Yau threefolds. In such cases, the exact non-perturbative superpotential of one string theory is given in terms of tree level computations in the oth...
['1995-05-18']
15,567
['eng']
['Gebert, R W', 'Nicolai, Hermann C', 'West, Peter C']
['Multistring vertices and hyperbolic Kac Moody algebras']
['Particle Physics - Theory']
['string model, boson', 'spontaneous compactification', 'operator, vertex', 'operator, algebra', 'algebra, representation', 'operator product expansion', 'phase space', 'algebra, Virasoro', 'algebra, Kac-Moody', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505106']
["Multistring vertices and the overlap identities which they satisfy are exploited to understand properties of hyperbolic Kac Moody algebras, and E_{10} in particular. Since any such algebra can be embedded in the larger Lie algebra of physical states of an associated completely compactified subcritical bosonic string,...
['1995-05-18']
15,568
['eng']
['Chung, T D', 'Lee, J C']
['Superfield form of discrete gauge states in $\\widehat{c}$ = 1 2d supergravity']
['Particle Physics - Theory']
['supergravity', 'dimension, 2', 'field theory, Liouville', 'supersymmetry, superfield', 'charge, W(infinity)', 'symmetry, gauge']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505107']
['A general formula for the discrete states (Neveu-Schwarz sector) in N=1 2D super-Liouville theory is written down in the world-sheet supersymmetric form. We then derive a set of gauge states at the discrete momenta. These discrete gauge states are shown to carry the w_\\infty charges and serve as the symmetry paramet...
['1995-05-18']
15,569
['eng']
['Lee, K M', 'Lo, H K']
['Wavefunctions for non-abelian vortices']
['Particle Physics - Theory']
['gauge field theory, vortex', 'nonabelian', 'wave function', 'dimension, 2', 'space-time, cylinder', 'space-time, torus', 'Aharonov-Bohm effect']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505108']
['We construct exact wavefunctions of two vortices on a plane, a single vortex on the cylinder and a vortex on the torus. In each case, the physics is shown to be equivalent to a particle moving in a covering space, something simple to solve in those examples. We describe how our solutions fit into the general theory o...
['1995-05-18']
15,570
['eng']
["D'Hoker, E"]
['Invariant effective actions and cohomology']
['Particle Physics - Theory']
['talk, Los Angeles 1995/03/13', 'effective action', 'any-dimensional', 'Goldstone theorem', 'coset space', 'cohomology']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505109']
['We review the correspondence between effective actions resulting from non-invariant Lagrangian densities, for Goldstone bosons arising from spontaneous breakdown of a symmetry group G to a subgroup H, and non-trivial generators of the de Rham cohomology of G/H. We summarize the construction of cohomology generators i...
['1995-05-18']
15,571
['eng']
['Derkachov, S E', 'Manashov, A N']
['The spectrum of the anomalous dimensions of the composite operators in the $\\varepsilon$- expansion in the scalar $\\phi^{4}$ - field theory']
['Particle Physics - Theory']
['phi**n model, 4', 'operator, composite', 'epsilon expansion', 'anomaly, conformal', 'renormalization', 'numerical calculations']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505110']
['The spectrum of the anomalous dimensions of the composite operators (with arbitrary number of fields n and derivatives l) in the scalar \\phi^4 - theory in the first order of the \\epsilon -expansion is investigated. The exact solution for the operators with number of fields \\leq 4 is presented. The behaviour of the...
['1995-05-19']
15,572
['eng']
['Creutz, M']
['Quark masses and chiral symmetry']
['Particle Physics - Theory']
['gauge field theory, strong interaction', 'strong interaction, gauge field theory', 'symmetry, chiral', 'quark, mass', 'mass, quark', 'violation, CP', 'critical phenomena', 'quark, flavor', 'fermion, lattice field theory', 'numerical calculations, Monte Carlo']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505112']
["I discuss the global structure of the strongly interacting gauge theory of quarks and gluons as a function of the quark masses and the CP violating parameter \\theta. I concentrate on whether a first order phase transition occurs at \\theta=\\pi. I show why this is expected when multiple flavors have a small degenera...
['1995-05-19']
15,573
['eng']
['Brandt, F T', 'Frenkel, J']
['Nonlinear couplings and tree amplitudes in gauge theories']
['Particle Physics - Theory']
['gauge field theory, Yang-Mills', 'tree approximation', 'coupling, nonlinear', 'nonlinear, coupling', 'invariance, gauge']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505114']
['Following a remark advanced by Feynman,we study the connection between the form of the nonlinear vertices involving gauge particles and the Abelian gauge invariance of physical tree amplitudes. We show that this requirement, together with some natural assumptions, fixes uniquely the structure of the Yang-Mills theory...
['1995-05-19']
15,574
['eng']
['Antillón, A', 'Escalona, J', 'Germán, G', 'Torres, M']
['Self-dual non-abelian vortices in a $\\phi^{2}$ Chern-Simons theory']
['Particle Physics - Theory']
['gauge field theory, Yang-Mills', 'Chern-Simons term', 'field theory, scalar', 'dimension, 3', 'vortex']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505115']
["We study a non-Abelian Chern-Simons gauge theory in 2+ 1 dimensions with the inclusion of an anomalous magnetic interaction. For a particular relation between the Chern-Simons (CS) mass and the anomalous magnetic coupling the equations for the gauge fields reduce from second- to first order differential equations of ...
['1995-05-19']
15,575
['eng']
['Brooks, R', 'Kallosh, R', 'Ortín, Tomas']
['Fermion zero modes and black-hole hypermultiplets with rigid supersymmetry']
['Particle Physics - Theory']
['supergravity', 'black hole, multiplet', 'multiplet, black hole', 'fermion, zero mode', 'renormalization', 'supersymmetry', 'postulated particle, dilaton', 'central charge']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505116']
['The gravitini zero modes riding on top of the extreme Reissner-Nordstrom black-hole solution of N=2 supergravity are shown to be normalizable. The gravitini and dilatini zero modes of axion-dilaton extreme black-hole solutions of N=4 supergravity are also given and found to have finite norms. These norms are duality ...
['1995-05-19']
15,576
['eng']
['Cortés, J L', 'Plyushchay, M S']
['Anyons as spinning particles']
['Particle Physics - Theory']
['particle, relativistic', 'spin, fractional', 'fractional, spin', 'anyon', 'dimension, 3']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505117']
['A model-independent formulation of anyons as spinning particles is presented. The general properties of the classical theory of (2+1)-dimensional relativistic fractional spin particles and some properties of their quantum theory are investigated. The relationship between all the known approaches to anyons as spinning...
['1995-05-19']
15,577
['eng']
['Modanese, G']
['Theoretical analysis of a reported weak gravitational shielding effect']
['Particle Physics - Theory']
['quantum gravity, nonperturbative', 'lattice field theory', 'superconducting', 'temperature, high', 'gravitation, screening', 'interpretation of experiments']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505094']
['Under special conditions (Meissner-effect levitation and rapid rotation) a disk of high-T_c superconducting material has recently been found to produce a weak shielding of the gravitational field. We show that this phenomenon has no explanation in the standard gravity theories, except possibly in the non-perturbative...
['1995-05-17']
15,578
['eng']
['Mohayaee, R', 'Wenham, L']
['Higher-loop anomalies in chiral gravities']
['Particle Physics - Theory']
['gravitation, chiral', 'algebra, W(3)', 'anomaly, nonlocal', 'anomaly, gauge', 'regularization', 'Wess-Zumino term', 'quantization, Becchi-Rouet-Stora', 'Ward identity', 'Feynman graph, higher-order']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505099']
["The one-loop anomalies for chiral W_{3} gravity are derived using the Fujikawa regularisation method. The expected two-loop anomalies are then obtained by imposing the Wess-Zumino consistency conditions on the one-loop results. The anomalies found in this way agree with those already known from explicit Feynman diagr...
['1995-05-17']
15,579
['eng']
['Ibáñez, L E']
['Strings, unification and dilaton/moduli-induced SUSY-breaking']
['Particle Physics - Theory']
['talk, Los Angeles 1995/03/13', 'string model', 'supersymmetry', 'grand unified theory, SU(5)', 'grand unified theory, SO(10)', 'particle, multiplet', 'multiplet, particle', 'symmetry breaking', 'potential, Kaehler', 'coupling constant', 'renormalization group', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505098']
['I discuss several issues concerning the use of string models as unified theories of all interactions. After a short review of gauge coupling unification in the string context, I discuss possible motivations for the construction of SU(5) and SO(10) String-GUTs. I describe the construction of such String-GUTs using dif...
['1995-05-17']
15,580
['eng']
['Amorim, R', 'Barcelos-Neto, J']
['On the equivalence among some chiral-boson theories']
['Particle Physics - Theory']
['field theory, scalar', 'dimension, 2', 'boson, chiral', 'quantization, constraint', 'Hamiltonian formalism']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505096']
['We make a comparative study of chiral-boson theories in the Florenani-Jackiw (FJ) and linear constraint formulations. A special attention is given to the case with an improved way of implementing the linear constraint. We show that it has the same spectrum of the FJ formulation.']
['1995-05-17']
15,581
['eng']
['Amorim, R', 'Barcelos-Neto, J']
['BV quantization of a vector-tensor gauge theory with topological coupling']
['Particle Physics - Theory']
['quantization, Batalin-Vilkovisky', 'gauge field theory, vector', 'gauge field theory, tensor', 'coupling, topological', 'topological, coupling', 'mass', 'gauge fixing', 'effective action']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505095']
['We use the BV quantization method for a theory with coupled tensor and vector gauge fields through a topological term. We consider in details the reducibility of the tensorial sector as well as the appearance of a mass term in the effective vectorial theory .']
['1995-05-17']
15,582
['eng']
['Brunelli, J C', 'Das, A']
['Supersymmetric two boson equation, its reductions and the nonstandard supersymmetric KP hierarchy']
['Particle Physics - Theory']
['Kadomtsev-Petviashvili equation, hierarchy', 'supersymmetry', 'integrability', 'charge, conservation law', 'operator, Lax', 'Schroedinger equation, nonlinear', 'charge, nonlocal', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505093']
['In this paper, we review various properties of the supersymmetric Two Boson (sTB) system. We discuss the equation and its nonstandard Lax representation. We construct the local conserved charges as well as the Hamiltoniam structures of the system. We show how this system leads to various other known supersymmetric in...
['1995-05-17']
15,583
['eng']
['Gattringer, C R']
['On the U(1)-problem of QED$_{2}$']
['Particle Physics - Theory']
['talk, Schladming 1995/03/04', 'quantum electrodynamics', 'fermion, massive', 'massive, fermion', 'fermion, flavor', 'dimension, 2', 'field theory, Euclidean', 'path integral', 'perturbation theory', 'vacuum state', 'Theta parameter', 'expansion, cluster', 'bosonization']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505092']
['QED_2 with mass and flavor has in common many features with QCD, and thus is an interesting toy model relevant for four dimensional physics. The model is constructed using Euclidean path integrals and mass perturbation series. The vacuum functional is carefully decomposed into clustering states being the analogue of ...
['1995-05-17']
15,584
['eng']
['Matos, T']
['Comment on "Integrable systems in stringy gravity"']
['Particle Physics - Theory']
['gravitation, string', 'integrability', 'field theory, dilaton', 'potential']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505090']
['This is a comment on the article "Integrable Systems in Stringy Gravity" by D. V. Gal\'tsov, Phys. Rev. Lett. 74, 2863, (1995).']
['1995-05-17']
15,585
['eng']
['de Wit, B', 'Van Proeyen, A']
['Isometries of special manifolds']
['Particle Physics - Theory']
['talk, Trieste 1994/09', 'supergravity', 'gauge field theory, Yang-Mills', 'supersymmetry', 'field theory, Kaehler', 'space-time, quaternion', 'differential geometry, symplectic', 'algebra, Clifford']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505097']
['We describe special K\\"ahler geometry, special quaternionic manifolds, and very special real manifolds and analyze the structure of their isometries. The classification of the homogeneous manifolds of these types is presented.']
['1995-05-17']
15,586
['eng']
['Gibbs, P E']
['Event-symmetric physics']
['Particle Physics - Theory']
['quantum gravity', 'space-time, discrete', 'symmetry, spontaneously broken', 'lattice field theory, simplex', 'triangulation', 'graph theory, random', 'model, molecule', 'Ising model', 'matrix model', 'algebra, Lie', 'supersymmetry', 'duality', 'spinor', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505089']
['I examine various aspects of event-symmetric physics such as phase changes, symmetry breaking and duality by studying a number of simple toy-models.']
['1995-05-17']
15,587
['eng']
['Leigh, Robert G', 'Strassler, M J']
['Duality of Sp(2N$_{c}$) and SO(N$_{c}$) supersymmetric gauge theories with adjoint matter']
['Particle Physics - Theory']
['gauge field theory, SO(N)', 'gauge field theory, Sp(N)', 'supersymmetry', 'coupling, matter', 'matter, coupling', 'duality, transformation', 'mass, perturbation theory', 'perturbation theory, mass']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505088']
['We discuss electric-magnetic duality in two new classes of supersymmetric Yang-Mills theories. The models have gauge group Sp(2\\nc) or SO(\\nc) with matter in both the adjoint and defining representations. By perturbing these theories with various superpotentials, we find a variety of new infrared fixed points with ...
['1995-05-16']
15,588
['eng']
['Wexler, M']
['An approximation for random surfaces on arbitrary target spaces']
['Particle Physics - Theory']
['random surface', 'matrix model', 'perturbation theory', 'low temperature expansion', 'Potts model', 'scaling', 'critical phenomena', 'Pade approximation', 'numerical calculations']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505087']
['A perturbative technique, the low-temperature expansion, is developed for matrix models of random surfaces. It can be applied to models with arbitrary target spaces, including ones with c>1. As a simple illustration, the series is worked out to 10th order for the surface coupled to a q-state Potts model. Accurate est...
['1995-05-16']
15,589
['eng']
['LeClair, A']
['Quantum theory of self-induced transparency']
['Particle Physics - Theory']
['optics, nonlinear', 'matter, dielectric', 'matter, transparency', 'electromagnetic field', 'quantization', 'sine-Gordon model', 'atom, energy levels', 'radiation, emission', 'emission, radiation', 'thermodynamics, Bethe ansatz']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505086']
['It is known that classical electromagnetic radiation at a frequency in resonance with energy splittings of atoms in a dielectric medium can be described using the classical sine-Gordon equation. In this paper we quantize the electromagnetic field and compute quantum corrections to the classical results by using known...
['1995-05-16']
15,590
['eng']
['Chari, V', 'Pressley, A']
["Yangians, integrable quantum systems and Dorey's rule"]
['Particle Physics - Theory']
['quantum group, representation', 'algebra, Lie', 'algebra, representation', 'integrability']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505085']
["We study tensor products of fundamental reprsentations of Yangians and show that the fundamental quotients of such tensor products are given by Dorey's rule."]
['1995-05-16']
15,591
['eng']
['Guida, R', 'Konishi, K I', 'Suzuki, H']
['Improved convergence proof of the delta expansion and order dependent mappings']
['Particle Physics - Theory']
['perturbation theory, delta expansion', 'asymptotic behavior', 'model, oscillator', 'phi**n model, 4', 'critical phenomena', 'numerical calculations', 'mathematical methods']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505084']
["We improve and generalize in several accounts the recent rigorous proof of convergence of delta expansion - order dependent mappings (variational perturbation expansion) for the energy eigenvalues of anharmonic oscillator. For the single-well anharmonic oscillator the uniformity of convergence in g\\in[0,\\infty] is ...
['1995-05-16']
15,592
['eng']
['Lowe, D A']
['The planckian conspiracy']
['Particle Physics - Theory']
['black hole, horizon', 'string model', 'S-matrix', 'effect, nonlocal', 'saddle-point approximation', 'radiation, Hawking']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505074']
['It has been argued that the consistency of quantum theory with black hole physics requires nonlocality not present in ordinary effective field theory. We examine the extent to which such nonlocal effects show up in the perturbative S-matrix of string theory.']
['1995-05-15']
15,593
['eng']
['Klimenko, S V', 'Nikitin, I N', 'Talanov, V V']
['Singularities on the world sheets of open relativistic strings']
['Particle Physics - Theory']
['string model, relativistic', 'string, open', 'boundary condition', 'topology', 'geometry, algebra']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505081']
['A classification of stable singular points on world sheets of open relativistic strings is carried out.']
['1995-05-15']
15,594
['eng']
['Cleaver, G B']
['Number of supersymmetries in free fermionic strings']
['Particle Physics - Theory']
['string model, heterotic', 'fermion, string', 'field theory, action', 'partition function', 'supersymmetry, transformation', 'group theory, representation']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505080']
['Consistent heterotic free fermionic string models are classified in terms of their number of spacetime supersymmetries, N. For each of the six distinct choices of gravitino sector, we determine what number of supersymmetries can survive additional GSO projections. We prove by exhaustive search that only three of the ...
['1995-05-15']
15,595
['eng']
['Fliegner, D', 'Haberl, P', 'Schmidt, M G', 'Schubert, C']
['Inverse mass expansions from worldline path integrals']
['Particle Physics - Theory']
['talk', 'path integral', 'effective action', 'mass spectrum', 'perturbation theory']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505077']
['Higher order coefficients of the inverse mass expansion of one--loop effective actions are obtained from a one--dimensional path integral representation. For the evaluation of the path integral with Wick contractions a suitable Green function has to be chosen. We consider the case of a massive scalar loop in the back...
['1995-05-15']
15,596
['eng']
['Hari-Dass, N D', 'Hanlon, B E', 'Yukawa, T']
['Finite size effects for the Ising model coupled to 2-D random surfaces']
['Particle Physics - Theory']
['Ising model', 'random surface', 'dimension, 2', 'effect, finite size', 'parametrization', 'matrix model', 'partition function', 'string model, susceptibility', 'temperature', 'critical phenomena', 'analytic properties', 'numerical calculations']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505076']
['Finite size effects for the Ising Model coupled to two dimensional random surfaces are studied by exploiting the exact results from the 2-matrix models. The fixed area partition function is numerically calculated with arbitrary precision by developing an efficient algorithm for recursively solving the quintic equatio...
['1995-05-15']
15,597
['eng']
['Hanany, A', 'Oz, Y']
['On the quantum moduli space of vacua of N=2 supersymmetric SU(N$_{c}$) gauge theories']
['Particle Physics - Theory']
['gauge field theory, SU(N)', 'supersymmetry', 'vacuum state', 'moduli space', 'field theory, dyon', 'duality, transformation', 'geometry, algebra']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505075']
['We construct families of hyper-elliptic curves which describe the quantum moduli spaces of vacua of N=2 supersymmetric SU(N_c) gauge theories coupled to N_f flavors of quarks in the fundamental representation. The quantum moduli spaces for N_f < N_c are determined completely by imposing R-symmetry, instanton correcti...
['1995-05-15']
15,598
['eng']
['Hull, C M', 'Townsend, P K']
['Enhanced gauge symmetries in superstring theories']
['Particle Physics - Theory']
['string model', 'supersymmetry', 'supergravity', 'transformation, gauge', 'field theory, monopole', 'phase space']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505073']
['We show that certain four-dimensional N=4 supersymmetric theories have special points in the moduli space of vacua at which some massive Bogomolnyi vector supermultiplets become massless, resulting in an enhanced non-abelian gauge symmetry. In particular, we show that, subject to a conjecture concerning its Bogomolny...
['1995-05-15']
15,599
['eng']
['Rabello, S J', 'Vaidya, A N']
['The path integral for Chern-Simons quantum mechanics']
['Particle Physics - Theory']
['quantum mechanics', 'gauge field theory, U(1)', 'Chern-Simons term', 'path integral', 'operator, algebra', 'Aharonov-Bohm effect', 'spin, statistics', 'statistics, spin']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9505072']
['The path integral representation for a system of N non-relativistic particles on the plane, interacting through a Chern-Simons gauge field, is obtained from the operator formalism. An effective interaction between the particles appears, generating the usual Aharonov-Bohm phases. The spin-statistics relation is also c...
['1995-05-15']