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 |
|---|---|---|---|---|---|---|---|---|
17,900 | ['eng'] | ['Bardakci, K'] | ['A Candidate For The QCD String Based On Non-Backtracking Random Walks'] | ['Particle Physics - Theory'] | ['quantum chromodynamics', 'string model', 'continuum limit', 'Thirring model', 'renormalization group', 'Wilson loop', 'random walk', 'expansion 1/N'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210094'] | ['A new string theory is proposed as a candidate for the large N limit of QCD. In this theory, strings are constrained to be non-backtracking; a condition that is essential for the gauge invariance of the underlying field theory.This condition is implemented by first placing the theory on a lattice and then introducing... | ['2002-07-01'] |
17,901 | ['eng'] | ['Rao, S', 'Sen, D'] | ['Non-linear Field Theory of a Frustrated Heisenberg Spin Chain'] | ['Particle Physics - Theory'] | ['model, ferromagnet', 'symmetry, SO(3)', 'field theory', 'symmetry', 'renormalization group, beta function'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210096'] | ['We derive a continuum field theory for the Majumdar-Ghosh model in the large-$S$ limit, where the field takes values in the manifold of the $SO(3)$ group. No topological term is induced in the action and the cases for integer spin and half-integer spin appear to be indistinguishable. A one-loop $\\beta -$function cal... | ['2002-07-01'] |
17,902 | ['eng'] | ['Schiff, J'] | ['Actions for Integrable Systems and Deformed Conformal Theories'] | ['Particle Physics - Theory'] | ['talk', 'Korteweg-de Vries equation, hierarchy', 'dimension, 2', 'Hamiltonian formalism', 'quantization', 'algebra, Virasoro', 'Schroedinger equation, nonlinear'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210137'] | ['I report on work on a Lagrangian formulation for the simplest 1+1 dimensional integrable hierarchies. This formulation makes the relationship between conformal field theories and (quantized) 1+1 dimensional integrable hierarchies very clear.'] | ['2002-07-01'] |
17,903 | ['eng'] | ['Freeman, M D', 'West, Peter C'] | ['$W_3$ string scattering'] | ['Particle Physics - Theory'] | ['string model', 'algebra, W(3)', 'operator, vertex', 'group theory', 'field theory, scalar', 'charge, Becchi-Rouet-Stora', 'scattering amplitude', 'Ising model', 'correlation function, tachyon', 'phase space'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210134'] | ['The group theoretic method is extended to include fields with a background charge. This formalism is used to compute the tree level scattering for $W_3$ strings. The scattering amplitudes involve Ising model correlation functions. A detailed study of the four tachyon amplitude shows that the $W_3$ string must possess... | ['2002-07-01'] |
17,904 | ['eng'] | ['Guruswamy, S', 'Rajeev, S G'] | ['Two Dimensional Quantum Chromodynamics on a Cylinder'] | ['Particle Physics - Theory'] | ['quantum chromodynamics', 'dimension, 2', 'space-time, cylinder', 'light cone gauge', 'Wilson loop', 'linear spaces, Fock space'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210136'] | ['We study two dimensional Quantum Chromodynamics with massive quarks on a cylinder in a light--cone formalism. We eliminate the non--dynamical degrees of freedom and express the theory in terms of the quark and Wilson loop variables. It is possible to perform this reduction without gauge fixing. The fermionic Fock spa... | ['2002-07-01'] |
17,905 | ['eng'] | ['Gambini, R', 'Pullin, J'] | ['Quantum Einstein-Maxwell Fields'] | ['Particle Physics - Theory'] | ['relativity theory, general', 'electromagnetic field', 'Chern-Simons term', 'Hamiltonian formalism', 'phase space', 'loop space'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210110'] | ["We propose a naive unification of Electromagnetism and General Relativity based on enlarging the gauge group of Ashtekar's new variables. We construct the connection and loop representations and analyze the space of states. In the loop representation, the wavefunctions depend on two loops, each of them carrying infor... | ['2002-07-01'] |
17,906 | ['eng'] | ['Rossini, G L', 'Schaposnik, F A'] | ['Fermionic Coset Models as Topological Models'] | ['Particle Physics - Theory'] | ['talk', 'field theory, conformal', 'dimension, 2', 'fermion', 'coset space, U(1)/U(1)', 'field theory, topological', 'gauge field theory, tensor', 'supersymmetry'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210084'] | ['By considering the fermionic realization of $G/H$ coset models, we show that the partition function for the $U(1)/U(1)$ model defines a Topological Quantum Field Theory and coincides with that for a 2-dimensional Abelian BF system. In the non-Abelian case, we prove the topological character of $G/G$ coset models by e... | ['2002-07-01'] |
17,907 | ['eng'] | ['Khudaverdian, O M', 'Nersessian, A P'] | ['Even and odd symplectic and K\\"ahlerian structures on projective superspaces'] | ['Particle Physics - Theory'] | ['quantization, Batalin-Vilkovisky', 'supersymmetry, superspace', 'space-time, Kaehler', 'differential forms, symplectic', 'Hamiltonian formalism', 'operator, algebra'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210091'] | ['Supergeneralization of $\\DC P(N)$ provided by even and odd K\\"ahlerian structures from Hamiltonian reduction are construct.Operator $ \\Delta$ which used in Batalin-- Vilkovisky quantization formalism and mechanics which are bi-Hamiltonian under corresponding even and odd Poisson brackets are considered.'] | ['2002-07-01'] |
17,908 | ['eng'] | ['Dunbar, D C', 'Joshi, K G'] | ['Characters for Coset Conformal Field Theories'] | ['Particle Physics - Theory'] | ['field theory, conformal', 'field theory, rational', 'coset space', 'algebra, character', 'operator product expansion'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210122'] | ['We solve the Kac-Moody branching equation to obtain explicit formulae for the characters of coset conformal field theories and then apply these to specific examples to determine the integer shift of the conformal weights of primary fields. We also present an example of coset conformal field theory which cannot be des... | ['2002-07-01'] |
17,909 | ['eng'] | ['Davis, R', 'Griffies, S', 'Soleng, H H'] | ['Cauchy Horizons, Thermodynamics and Closed Time-like Curves in Planar Supersymmetric Space-times'] | ['Particle Physics - Theory'] | ['space-time, Minkowski', 'space-time, de Sitter', 'domain wall, planar', 'supersymmetry', 'supergravity', 'black hole'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210123'] | ['We study geodesically complete, singularity free space-times induced by supersymmetric planar domain walls interpolating between Minkowski and anti-de Sitter ($AdS_4$) vacua. A geodesically complete space-time without closed time-like curves includes an infinite number of semi-infinite Minkowski space-times, separate... | ['2002-07-01'] |
17,910 | ['eng'] | ['Myers, R C', 'Periwal, V'] | ['Chiral Non-Critical Strings'] | ['Particle Physics - Theory'] | ['talk', 'string model, heterotic', 'quantum gravity', 'field theory, conformal', 'dimension, 2', 'quantization', 'path integral', 'moduli space', 'correlation function'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210082'] | ["It is shown that conformal matter with $c_{\\ssc L}\\not=c_{\\ssc R}$ can be consistently coupled to two-dimensional `frame' gravity. The theory is quantized in conformal gauge, following David, and Distler and Kawai. There is no analogue of the $c=1$ barrier found in nonchiral non-critical strings. A non-critical he... | ['2002-07-01'] |
17,911 | ['eng'] | ['Brekke, L', 'Dykstra, H', 'Falk, A F', 'Imbo, T D'] | ['Novel Spin and Statistical Properties of Nonabelian Vortices'] | ['Particle Physics - Theory'] | ['vortex, nonabelian', 'gauge field theory, SU(3)', 'gauge field theory, SU(2)', 'dimension, 3', 'symmetry, spontaneously broken', 'spin, statistics', 'statistics, spin', 'spin, fractional', 'fractional, spin'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210131'] | ["We study the statistics of vortices which appear in (2+1)--dimensional spontaneously broken gauge theories, where a compact group G breaks to a finite nonabelian subgroup H. Two simple models are presented. In the first, a quantum state which is symmetric under the interchange of a pair of indistinguishable vortices ... | ['2002-07-01'] |
17,912 | ['eng'] | ['Eholzer, W'] | ['Fusion Algebras Induced by Representations of the Modular Group'] | ['Particle Physics - Theory'] | ['field theory, conformal', 'field theory, rational', 'dimension, 2', 'group theory, modular', 'algebra, Virasoro', 'algebra, fusion', 'algebra, representation'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210040'] | ["Using the representation theory of the subgroups SL_2(Z_p) of the modular group we investigate the induced fusion algebras in some simple examples. Only some of these representations lead to 'good' fusion algebras. Furthermore, the conformal dimensions and the central charge of the corresponding rational conformal fi... | ['2002-07-01'] |
17,913 | ['eng'] | ['De Roo, M', 'Suelmann, H', 'Wiedemann, A'] | ['The Supersymmetric Effective Action of the Heterotic String in Ten Dimensions'] | ['Particle Physics - Theory'] | ['string model, heterotic', 'dimension, 10', 'effective action', 'supersymmetry, transformation'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210099'] | ['We construct the supersymmetric completion of quartic $R+R^4$-actions in the ten-dimensional effective action of the heterotic string. Two invariants, of which the bosonic parts are known from one-loop string amplitude calculations, are obtained. One of these invariants can be generalized to an $R+F^2+F^4$-invariant ... | ['2002-07-01'] |
17,914 | ['eng'] | ['Yu, F', 'Wu, Y S'] | ['On the KP Hierarchy, $\\hat{W}_{\\infty}$ Algebra, and Conformal SL(2,R)\\/U(1) Model; 1, The Classical Case'] | ['Particle Physics - Theory'] | ['Kadomtsev-Petviashvili equation, hierarchy', 'integrability', 'algebra, W(infinity)', 'field theory, conformal', 'dimension, 2', 'Hamiltonian formalism', 'current algebra', 'coset space, SL(2,R)/U(1)'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210117'] | ['In this paper we study the inter-relationship between the integrable KP hierarchy, nonlinear $\\hat{W}_{\\infty}$ algebra and conformal noncompact $SL(2,R)/U(1)$ coset model at the classical level. We first derive explicitly the Possion brackets of the second Hamiltonian structure of the KP hierarchy, then use it to ... | ['2002-07-01'] |
17,915 | ['eng'] | ['Bellucci, S', 'Ivanov, E', 'Krivonos, S'] | ['N=3 Supersymmetric Extension of KdV Equation'] | ['Particle Physics - Theory'] | ['talk, Dubna 1992/07/06', 'Korteweg-de Vries equation, integrability', 'symmetry, SO(3)', 'supersymmetry', 'algebra, conformal', 'Hamiltonian formalism'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210059'] | ["We construct a one-parameter family of N=3 supersymmetric extensions of the KdV equation as a Hamiltonian flow on N=3 superconformal algebra and argue that it is non-integrable for any choice of the parameter. Then we propose a modified N=3 super KdV equation which possesses the higher order conserved quantities and ... | ['2002-07-01'] |
17,916 | ['eng'] | ['Yu, F', 'Wu, Y S'] | ['On the KP Hierarchy, $\\hat{W}_{\\infty}$ Algebra, and Conformal SL(2,R)/U(1) Model --- The Classical and Quantum Cases'] | ['Particle Physics - Theory'] | ['talk', 'Kadomtsev-Petviashvili equation, hierarchy', 'current algebra, W(infinity)', 'field theory, conformal', 'dimension, 2', 'quantization', 'Hamiltonian formalism', 'coset space, SL(2,R)/U(1)'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210162'] | ['We give a unified description of our recent results on the the inter-relationship between the integrable infinite KP hierarchy, nonlinear $\\hat{W}_{\\infty}$ current algebra and conformal noncompact $SL(2,R)/U(1)$ coset model both at the classical and quantum levels. In particular, we present the construction of a q... | ['2002-07-01'] |
17,917 | ['eng'] | ['Bytsenko, A A', 'Elizalde, E', 'Odintsov, S D', 'Zerbini, S'] | ['A Novel Representation for the Free Energy in String Theory at Non-Zero Temperature'] | ['Particle Physics - Theory'] | ['string model', 'boson, string', 'supersymmetry', 'finite temperature', 'energy', 'analytic properties'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210085'] | ['A novel representation ---in terms of a Laurent series--- for the free energy of string theory at non-zero temperature is constructed. The examples of open bosonic, open supersymmetric and closed bosonic strings are studied in detail. In all these cases the Laurent series representation for the free energy is obtaine... | ['2002-07-01'] |
17,918 | ['eng'] | ['Hamada, K'] | ['Gravitational Collapse in 1+1 Dimensions and Quantum Gravity'] | ['Particle Physics - Theory'] | ['talk, Kyoto 1992/07/14', 'quantum gravity, dilaton', 'dimension, 2', 'path integral, measure', 'Wheeler-DeWitt equation', 'black hole', 'tunneling'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210101'] | ['We investigate the quantum theory of 1+1 dimensional dilaton gravity, which is an interesting toy model of the black hole dynamics. The functional measures of gravity part are explicitly evaluated and derive the Wheeler-DeWitt like equations as physical state conditions. In ADM formalism the measures are very ambiguo... | ['2002-07-01'] |
17,919 | ['eng'] | ['Giavarini, G', 'Martín, C P', 'Ruiz, F R'] | ['Regularization and Renormalization of Chern-Simons Theory'] | ['Particle Physics - Theory'] | ['talk', 'gauge field theory, topological', 'Chern-Simons term', 'dimension, 3', 'quantization', 'perturbation theory, higher-order', 'regularization', 'effective action', 'Wilson loop'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210113'] | ["We analyze some features of the perturbative quantization of Chern-Simons theory (CST) in the Landau gauge. In this gauge the theory is known to be perturbatively finite. We consider the renormalization scheme in which the renormalized parameter $k$ equals the bare or classical one and show that it constitutes a natu... | ['2002-07-01'] |
17,920 | ['eng'] | ['Lópes-Cardoso, G', 'Ovrut, B A'] | ['Natural Supergravity Inflation'] | ['Particle Physics - Theory'] | ['supergravity, superfield', 'inflationary universe', 'anomaly, Kaehler', 'radiative correction', 'effective action'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210114'] | ['We show that a single uncharged chiral superfield, canonically coupled to \\mbox{$N=1$} supergravity with vanishing superpotential, naturally drives inflation in the early universe for a class of simple Kahler potentials. Inflation occurs due to the one-loop generation of a Kahler anomaly proportional to $\\R^2$. The... | ['2002-07-01'] |
17,921 | ['eng'] | ['Yu, F', 'Wu, Y S'] | ['On the KP Hierarchy, $\\hat{W}_{\\infty}$ Algebra, and Conformal SL(2,R)\\/U(1) Model; 2, The Quantum Case'] | ['Particle Physics - Theory'] | ['Kadomtsev-Petviashvili equation, hierarchy', 'algebra, W(infinity)', 'algebra, representation', 'integrability', 'Hamiltonian formalism', 'quantization', 'current algebra', 'algebra, deformation', 'field theory, conformal', 'dimension, 2', 'coset space, SL(2,R)/U(1)'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210118'] | ['This paper is devoted to constructing a quantum version of the famous KP hierarchy, by deforming its second Hamiltonian structure, namely the nonlinear $\\hat{W}_{\\infty}$ algebra. This is achieved by quantizing the conformal noncompact $SL(2,R)_{k}/U(1)$ coset model, in which $\\hat{W}_{\\infty}$ appears as a hidde... | ['2002-07-01'] |
17,922 | ['eng'] | ['Cortés, J L', 'Gamboa-Rios, J', 'Velázquez, L'] | ['Second Order Formalism for fermions'] | ['Particle Physics - Theory'] | ['fermion, lattice field theory', 'anomaly', 'gauge field theory'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9301072'] | ['A new formulation for fermions on the lattice based on a discretization of a second order formalism is proposed. A comparison with the first order formalism in connection with the $U(1)$ anomaly and the doubling problem is presented. The new formulation allows to eliminate half of the degrees of freedom, which can be... | ['2002-07-04'] |
17,923 | ['eng'] | ['Cortés, J L', 'Gamboa-Rios, J', 'Velázquez, L'] | ['Second Order Formalism for Fermions'] | ['Particle Physics - Theory'] | ['fermion, lattice field theory', 'anomaly, axial', 'path integral, measure', 'Dirac equation', 'effective action', 'decoupling'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9301071'] | ['A new formulation of fermions based on a second order action is proposed. An analysis of the $U(1)$ anomaly allows us to test the validity of the formalism at the quantum level. This formulation gives a new perpective to the introduction of parity non-invariant interactions.'] | ['2002-07-04'] |
17,924 | ['eng'] | ['Sen, A'] | ['Black Holes and Solitons in String Theory'] | ['Particle Physics - Theory'] | ['talk', 'field theory, string', 'boson, string', 'effective action', 'field equations, soliton', 'black hole', 'charge, electric', 'charge, magnetic', 'bibliography'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210050'] | ['In this review, I discuss a general method for constructing classical solutions of the equations of motion arising in the effective low energy string theory, and discuss specific applications of this method. (Based on talks given at the Johns Hopkins Workshop held at Goteborg, June 8-10, 1992, and ICTP Summer Worksho... | ['2002-07-01'] |
17,925 | ['eng'] | ['de Wit, B', 'Vanderseypen, F', 'Van Proeyen, A'] | ['Symmetry structure of special geometries'] | ['Particle Physics - Theory'] | ['space-time, Kaehler', 'algebra, quaternion', 'coset space', 'sigma model, nonlinear', 'supergravity', 'algebra, Clifford', 'differential geometry', 'bibliography'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210068'] | ['Using techniques from supergravity and dimensional reduction, we study the full isometry algebra of K\\"ahler and quaternionic manifolds with special geometry. These two varieties are related by the so-called c-map, which can be understood from dimensional reduction of supergravity theories or by changing chirality a... | ['2002-07-01'] |
17,926 | ['eng'] | ['Waldram, D'] | ['Charged String-like Solutions of Low-energy Heterotic String Theory'] | ['Particle Physics - Theory'] | ['string model, heterotic', 'effective action', 'field equations, solution', 'charge'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210031'] | ["Two string-like solutions to the equations of motion of the low-energy effective action for the heterotic string are found, each a source of electric and magnetic fields. The first carries an electric current equal to the electric charge per unit length and is the most general solution which preserves one half of the... | ['2002-07-01'] |
17,927 | ['eng'] | ['Gregory, R', 'Harvey, J A'] | ['Black Holes with a Massive Dilaton'] | ['Particle Physics - Theory'] | ['gravitation', 'field theory, dilaton', 'field theory, massive', 'massive, field theory', 'field theory, massless', 'massless, field theory', 'field equations, solution', 'black hole'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209070'] | ['The modifications of dilaton black holes which result when the dilaton acquires a mass are investigated. We derive some general constraints on the number of horizons of the black hole and argue that if the product of the black hole charge $Q$ and the dilaton mass $m$ satisfies $Q m < O(1)$ then the black hole has onl... | ['2002-07-01'] |
17,928 | ['eng'] | ['Bedaque, P F', 'Horváth, I', 'Rajeev, S G'] | ['Two dimensional baryons in the large N limit'] | ['Particle Physics - Theory'] | ['field theory, nonlocal', 'meson, field theory', 'dimension, 2', 'bosonization', 'expansion, quasiclassical', 'baryon number, 1', 'field equations, soliton', 'quantum chromodynamics'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209027'] | ['We propose a bilocal field theory for mesons in two dimensions obtained as a kind of non local bosonization of two dimensional QCD. Its semi-classical expansion is equivalent to the $1/N_c$ expansion of QCD. Using an ansatz we reduce the classical equation of motion of this theory in the baryon number one sector to a... | ['2002-07-01'] |
17,929 | ['eng'] | ['Kharchev, S', 'Marshakov, A'] | ['Topological versus Non--Topological Theories and $p-q$ Duality in $c \\le 1$ 2d Gravity Models'] | ['Particle Physics - Theory'] | ['talk', 'string model', 'quantum gravity', 'dimension, 2', 'field theory, topological', 'field theory, conformal', 'central charge, < =1', 'duality', 'field equations, solution', 'Kadomtsev-Petviashvili equation'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210072'] | ['We discuss the non--perturbative formulation for $c \\leq 1$ string theory. The field theory like formulation of topological and non--topological models is presented. The integral representation for arbitrary $(p,q)$ solutions is derived which explicitly obeys $p-q$ duality of these theories. The exact solutions to s... | ['2002-07-01'] |
17,930 | ['eng'] | ['Rusakov, B'] | ['From hermitian matrix model to lattice gauge theory'] | ['Particle Physics - Theory'] | ['gauge field theory, SU(N)', 'field theory, scalar', 'lattice field theory', 'matrix model', 'Wilson loop', 'approximation, strong coupling', 'strong coupling, approximation'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209097'] | ['I consider a lattice model of a gauge field interacting with matrix-valued scalars in $D$ dimensions. The model includes an adjustable parameter $\\s$, which plays role of the string tension. In the limit $\\s=\\infty$ the model coincides with Kazakov-Migdal\'s ``induced QCD", where Wilson loops obey a zero area law.... | ['2002-07-01'] |
17,931 | ['eng'] | ['Lee, H K', 'Rho, M'] | ['Rotation Symmetry and Nonabelian Berry Potential'] | ['Particle Physics - Theory'] | ['quantum mechanics, Berry phase', 'Schroedinger equation', 'angular momentum', 'gauge field theory, monopole', 'quantization', 'algebra, Grassmann'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210048'] | ["We study the role of rotational symmetry in the systems where nonabelian Berry potentials emerge as a result of integrating out fast degrees of freedom. The conserved angular momentum is constructed in the presence of a non-abelian Berry potential, which is formulated using Grassmann variables. The modifications on c... | ['2002-07-01'] |
17,932 | ['eng'] | ['Sakamoto, M'] | ['Peculiarity of String Theory on Orbifolds in the Presence of an Antisymmetric Background Field'] | ['Particle Physics - Theory'] | ['talk', 'string model', 'field theory, tensor', 'background field', 'field theory, topological', 'anomaly', 'commutation relations', 'operator, vertex'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210057'] | ['We study string theory on orbifolds in the presence of an antisymmetric constant background field and discuss some of new aspects of the theory. It is shown that the term with the antisymmetric field has a topological nature like a Chern-Simons term or a Wess-Zumino term. Due to this property, the theory exhibits var... | ['2002-07-01'] |
17,933 | ['eng'] | ['Fuchs, J', 'Kreuzer, M'] | ['On the Landau-Ginzburg description of $(A_1^{(1)})^{\\oplus N}$ invariants'] | ['Particle Physics - Theory'] | ['field theory, conformal', 'dimension, 2', 'supersymmetry', 'Landau-Ginzburg model', 'invariance, modular', 'partition function', 'field theory, orbifold', 'energy levels'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210053'] | ['We search for a \\Lg\\ interpretation of non-diagonal modular invariants of tensor products of minimal $n=2$ superconformal models, looking in particular at automorphism invariants and at some exceptional cases. For the former we find a simple description as \\lgo s, which reproduce the correct chiral rings as well a... | ['2002-07-01'] |
17,934 | ['eng'] | ['Skagerstam, B S'] | ['Localization of Massless Spinning Particles and the Berry Phase'] | ['Particle Physics - Theory'] | ['quantum mechanics, relativistic', 'massless', 'helicity', 'spin, topological', 'topological, spin', 'Berry phase', 'photon', 'bibliography'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210054'] | ['The components of the position operator, at a fixed time, for a massless and spinning particle with given helicity $\\lambda$ described in terms of bosonic degrees of freedom have an anomalous commutator proportional to $\\lambda$. The position operator generates translations in momentum space. We show that a ray-rep... | ['2002-07-01'] |
17,935 | ['eng'] | ['Ferraro, R', 'Henneaux, M', 'Puchin, M'] | ['On the Quantization of Reducible Gauge Systems'] | ['Particle Physics - Theory'] | ['gauge field theory', 'quantization, constraint', 'Hamiltonian formalism', 'phase space', 'differential geometry', 'ghost', 'transformation, Becchi-Rouet-Stora'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210070'] | ['Reducible gauge theories with constraints linear in the momenta are quantized. The equivalence of the reduced phase space quantization, Dirac quantization and BRST quantization is established. The ghosts of ghosts are found to play a crucial role in the equivalence proof.'] | ['2002-07-01'] |
17,936 | ['eng'] | ['Billó, M', 'Fré, P', 'Girardello, L', 'Zaffaroni, A'] | ['Gravitational Instantons in Heterotic String Theory'] | ['Particle Physics - Theory'] | ['string model, heterotic', 'field theory, conformal', 'background field, instanton', 'field theory, Kaehler', 'Kaluza-Klein model', 'invariance, modular', 'sigma model, nonlinear', 'symmetry breaking', 'group theory, representation'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210076'] | ['We study the problem of string propagation in a general instanton background for the case of the complete heterotic superstring. We define the concept of generalized HyperK\\" ahler manifolds and we relate it to (4,4) superconformal theories. We propose a generalized h-map construction that predicts a universal SU(6)... | ['2002-07-01'] |
17,937 | ['eng'] | ['Polchinski, Joseph'] | ['Effective Field Theory and the Fermi Surface'] | ['Particle Physics - Theory'] | ['lectures', 'effective action', 'renormalization', 'fermion, liquid', 'model, superconducting', 'superconducting, model'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210046'] | ['This is an introduction to the method of effective field theory. As an application, I derive the effective field theory of low energy excitations in a conductor, the Landau theory of Fermi liquids, and explain why the high-$T_c$ superconductors must be described by a different effective field theory.'] | ['2002-07-01'] |
17,938 | ['eng'] | ['Fujiwara, T', 'Igarashi, Y', 'Kubo, J', 'Maeda, K'] | ['A new insight into BRST anomalies in string theory'] | ['Particle Physics - Theory'] | ['string model', 'Hamiltonian formalism', 'algebra, Becchi-Rouet-Stora', 'commutation relations', 'anomaly, Virasoro', 'anomaly, Weyl', 'phase space'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210038'] | ['Using the generalized hamiltonian method of Batalin, Fradkin and Vilkovisky, we investigate the algebraic structure of anomalies in the Polyakov string theory that appear as the Schwinger terms in super-commutation relations between BRST charge and total hamiltonian. We obtain the most general form of the anomalies i... | ['2002-07-01'] |
17,939 | ['eng'] | ['Ho, C L', 'Hosotani, Y'] | ['Operator Algebra in Chern-Simons Theory on a Torus'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'Chern-Simons term', 'field theory, torus', 'coupling, matter', 'matter, coupling', 'relativistic', 'nonrelativistic', 'operator, algebra', 'phase space', 'wave function'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210103'] | ['We consider Chern-Simons gauge theory on a torus with both nonrelativistic and relativistic matter. It is shown that the Hamiltonian and two total momenta commute among themselves only in the physical Hilbert space. We also discuss relations among degenerate physical states, degenerate vacua, and the existence of mul... | ['2002-07-01'] |
17,940 | ['eng'] | ['Hagen, C R'] | ['Comment on Gauge-Independent Analysis of Chern-Simons Theory with Matter Coupling'] | ['Particle Physics - Theory'] | ['gauge field theory, U(1)', 'Chern-Simons term', 'coupling, matter', 'matter, coupling', 'dependence, gauge'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210022'] | ['It is shown that a recently proposed relativistic field theory of anyons is mathematically flawed and also does not satisfy reasonable criteria for such a theory.'] | ['2002-07-01'] |
17,941 | ['eng'] | ['Cvetic, M'] | ['Stability of Vacua and Domain Walls in Supergravity and Superstring Theory'] | ['Particle Physics - Theory'] | ['talk', 'supergravity', 'string model, supersymmetry', 'vacuum state, stability', 'domain wall', 'production, bubble', 'bubble, production', 'tunneling'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210006'] | ["We address the possibility of false vacuum decay in $N=1$ supergravity theories, including those corresponding to superstring vacua. By establishing a Bogomol'nyi bound for the energy density stored in the domain wall of the $O(4)$ invariant bubble, we show that supersymmetric vacua remain absolutely stable against f... | ['2002-07-01'] |
17,942 | ['eng'] | ['Tjin, T'] | ['Finite $W$ symmetry in finite dimensional integrable systems'] | ['Particle Physics - Theory'] | ['talk', 'field theory, conformal', 'algebra, W(N)', 'integrability', 'field theory, Toda', 'algebra, Lie'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210043'] | ["By generalizing the Drinfeld-Sokolov reduction a large class of $W$ algebras can be constructed. We introduce 'finite' versions of these algebras by Poisson reducing Kirillov Poisson structures on simple Lie algebras. A closed and coordinate free formula for the reduced Poisson structure is given. These finitely gene... | ['2002-07-01'] |
17,943 | ['eng'] | ['Borzi, A', 'Koubek, A'] | ['A Multi-Grid Method for the Resolution of Thermodynamic Bethe Ansatz Equations'] | ['Particle Physics - Theory'] | ['thermodynamics, Bethe ansatz', 'field theory, conformal', 'numerical methods', 'programming'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210126'] | ['We present a multi-grid algorithm in order to solve numerically the thermodynamic Bethe ansatz equations. We specifically adapt the program to compute the data of the conformal field theory reached in the ultraviolet limit. Submitted to Computer Physics Communications'] | ['2002-07-01'] |
17,944 | ['eng'] | ['Bars, Itzhak'] | ['Superstrings on Curved Spacetimes'] | ['Particle Physics - Theory'] | ['talk', 'string model, heterotic', 'supersymmetry', 'space-time, duality', 'background field', 'sigma model, nonlinear', 'coset space', 'Wess-Zumino-Witten model'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210079'] | ['In this lecture I summarize recent developments on strings propagating in curved spacetime. Exact conformal field theories that describe gravitational backgrounds such as black holes and more intricate gravitational singularities have been discovered and investigated at the classical and quantum level. These models a... | ['2002-07-01'] |
17,945 | ['eng'] | ['LeClair, A', 'Vafa, C'] | ['Quantum Affine Symmetry as Generalized Supersymmetry'] | ['Particle Physics - Theory'] | ['quantum algebra, SL(2)', 'algebra, affine', 'supersymmetry', 'field theory, conformal', 'dimension, 2', 'Landau-Ginzburg model', 'field theory, action', 'Witten index', 'energy'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210009'] | ["The quantum affine $\\CU_q (\\hat{sl(2)}) $ symmetry is studied when $q^2$ is an even root of unity. The structure of this algebra allows a natural generalization of N=2 supersymmetry algebra. In particular it is found that the momentum operators $P ,\\bar{P}$, and thus the Hamiltonian, can be written as generalized ... | ['2002-07-01'] |
17,946 | ['eng'] | ['Bachas, C P', 'Porrati, Massimo'] | ['Pair Creation of Open Strings in an Electric Field'] | ['Particle Physics - Theory'] | ['string model, boson', 'supersymmetry', 'string, pair production', 'pair production, string', 'electric field', 'gauge field theory, SO(N)', 'energy, density'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209032'] | ["We calculate exactly the rate of pair production of open bosonic and supersymmetric strings in a constant electric field. The rate agrees with Schwinger's classic result in the weak-field limit, but diverges when the electric field approaches some critical value of the order of the string tension. (Phyzzx file)"] | ['2002-07-01'] |
17,947 | ['eng'] | ['Diamandis, G A', 'Georgalas, B C', 'Maintas, X', 'Mavromatos, Nikolaos E'] | ['Time-dependent perturbations in two-dimensional String Black Holes'] | ['Particle Physics - Theory'] | ['black hole', 'string model', 'dimension, 2', 'perturbation, time dependence', 'field theory, tachyon', 'effective action'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210055'] | ["We discuss time-dependent perturbations (induced by matter fields) of a black-hole background in tree-level two-dimensional string theory. We analyse the linearized case and show the possibility of having black-hole solutions with time-dependent horizons. The latter exist only in the presence of time-dependent `tachy... | ['2002-07-01'] |
17,948 | ['eng'] | ['Dienes, K R'] | ['Fractional Superstrings with Critical Spacetime Dimensions Four and Six'] | ['Particle Physics - Theory'] | ['talk', 'string model', 'supersymmetry', 'dimension, fractional', 'field theory, action', 'partition function', 'vacuum state'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210064'] | ['Fractional superstrings are non-trivial generalizations of ordinary superstrings and heterotic strings, and have critical spacetime dimensions which are less than ten by virtue of a worldsheet fractional supersymmetry relating worldsheet bosons to worldsheet parafermions. In this paper, I provide a short non-technica... | ['2002-07-01'] |
17,949 | ['eng'] | ['Nash, C', "O'Connor, D"] | ['Ray-Singer Torsion, Topological field theories and the Riemann zeta function at s=3'] | ['Particle Physics - Theory'] | ['talk', 'field theory, topological', 'partition function', 'torsion', 'analytic properties, zeta function', 'group theory, cohomology'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210005'] | ['Starting with topological field theories we investigate the Ray-Singer analytic torsion in three dimensions. For the lens Spaces L(p;q) an explicit analytic continuation of the appropriate zeta functions is contructed and implemented. Among the results obtained are closed formulae for the individual determinants invo... | ['2002-07-01'] |
17,950 | ['eng'] | ['Percacci, R', 'Sezgin, E'] | ['Symmetries of P-Branes'] | ['Particle Physics - Theory'] | ['membrane model, p-brane', 'space-time', 'invariance, gauge', 'invariance, diffeomorphism', 'Hamiltonian formalism', 'constraint'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210061'] | ['Using canonical methods, we study the invariance properties of a bosonic $p$--brane propagating in a curved background locally diffeomorphic to $M\\times G$, where $M$ is spacetime and $G$ a group manifold. The action is that of a gauged sigma model in $p+1$ dimensions coupled to a Yang--Mills field and a $(p+1)$--fo... | ['2002-07-01'] |
17,951 | ['eng'] | ['Bailin, David', 'Love, A', 'Sabra, W A'] | ['Twisted Sector Yukawa Couplings for the $Z_3\\times Z_3$ Orbifold'] | ['Particle Physics - Theory'] | ['string model', 'field theory, orbifold', 'symmetry, Z(3) x Z(3)', 'coupling, Yukawa', 'Yukawa, coupling'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210030'] | ['The moduli dependent Yukawa couplings between twisted sectors of the $Z_3\\times Z_3$ orbifold are studied.'] | ['2002-07-01'] |
17,952 | ['eng'] | ['Schimmrigk, R'] | ['Critical String Vacua from Noncritical Manifolds'] | ['Particle Physics - Theory'] | ['string model', 'supersymmetry', 'field theory, higher-dimensional', 'space-time, Calabi-Yau', 'Landau-Ginzburg model', 'spontaneous compactification', 'symmetry, mirror'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210062'] | ['A new framework is found for the compactification of supersymmetric string theory. It is shown that the massless spectra of Calabi--Yau manifolds of complex dimension $D_{crit}$ can be derived from noncritical manifolds of complex dimension $2k + D_{crit}$, $k\\geq 1$. These higher dimensional manifolds are spaces wh... | ['2002-07-01'] |
17,953 | ['eng'] | ['Cecotti, S', 'Vafa, C'] | ['Ising Model and $N=2$ Supersymmetric Theories'] | ['Particle Physics - Theory'] | ['Ising model', 'supersymmetry', 'dimension, 2', 'field theory, massive', 'massive, field theory', 'spin, correlation function', 'correlation function, spin', 'vacuum state', 'topology', 'cohomology', 'Landau-Ginzburg model', 'mathematical methods, tau-function', 'bibliography'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209085'] | ['We establish a direct link between massive Ising model and arbitrary massive $N=2$ supersymmetric QFT\'s in two dimensions. This explains why the equations which appear in the computation of spin-correlations in the non-critical Ising model are the same as those describing the geometry of vacua in $N=2$ theories. The... | ['2002-07-01'] |
17,954 | ['eng'] | ['De la Ossa, X C', 'Quevedo, F'] | ['Duality Symmetries from Non--Abelian Isometries in String Theories'] | ['Particle Physics - Theory'] | ['string model', 'duality, transformation', 'black hole, dilaton', 'background, nonabelian', 'sigma model', 'symmetry, SO(N)'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210021'] | ['In string theory it is known that abelian isometries in the sigma model lead to target space duality. We generalize this duality to backgrounds with non--abelian isometries. The procedure we follow consists of gauging the isometries of the original action and constraining the field strength $F$ to vanish. This new ac... | ['2002-07-01'] |
17,955 | ['eng'] | ['Cognola, G', 'Vanzo, L'] | ['Bose-Einstein condensation of scalar fields on hyperbolic manifolds'] | ['Particle Physics - Theory'] | ['field theory, scalar', 'boson, condensation', 'gas, relativistic', 'space-time', 'finite temperature', 'critical phenomena', 'regularization, zeta function', 'potential, thermodynamical', 'high temperature expansion', 'low temperature expansion'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210003'] | ['The problem of Bose-Einstein condensation for a relativistic ideal gas on a 3+1 dimensional manifold with a hyperbolic spatial part is analyzed in some detail. The critical temperature is evaluated and its dependence of curvature is pointed out.'] | ['2002-07-01'] |
17,956 | ['eng'] | ['Brzezinski, T', 'Majid, S'] | ['Quantum Group Gauge Theory on Classical Spaces'] | ['Particle Physics - Theory'] | ['quantum group', 'gauge field theory, action', 'space-time, classical'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210024'] | ['We study the quantum group gauge theory developed elsewhere in the limit when the base space (spacetime) is a classical space rather than a general quantum space. We show that this limit of the theory for gauge quantum group $U_q(g)$ is isomorphic to usual gauge theory with Lie algebra $g$. Thus a new kind of gauge t... | ['2002-07-01'] |
17,957 | ['eng'] | ['Boulatov, D V'] | ['q-deformed lattice gauge theory and 3-manifold invariants'] | ['Particle Physics - Theory'] | ['lattice field theory, deformation', 'lattice field theory, simplex', 'partition function', 'quantum group, representation', 'knot theory, Jones polynomial', 'quantum algebra, SU(2)', 'gauge field theory', 'dimension, 3'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210032'] | ['The notion of $q$-deformed lattice gauge theory is introduced. If the deformation parameter is a root of unity, the weak coupling limit of a 3-$d$ partition function gives a topological invariant for a corresponding 3-manifold. It enables us to define the generalized Turaev-Viro invariant for cell complexes. It is sh... | ['2002-07-01'] |
17,958 | ['eng'] | ['Cangemi, D', 'Jackiw, R W'] | ['Geometric Gravitational Forces on Particles Moving in a Line'] | ['Particle Physics - Theory'] | ['gravitation', 'dimension, 2', 'particle, relativistic', 'astrophysics, fundamental constant', 'vacuum state, Theta parameter', 'quantum gravity'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210036'] | ["In two-dimensional space-time, point particles can experience a geometric, dimension-specific gravity force, which modifies the usual geodesic equation of motion and provides a link between the cosmological constant and the vacuum $\\theta$-angle. The description of such forces fits naturally into a gauge theory of g... | ['2002-07-01'] |
17,959 | ['eng'] | ['Zegwaard, J'] | ['The weaving of curved geometries'] | ['Particle Physics - Theory'] | ['quantum gravity', 'loop space', 'phase space', 'Hamiltonian formalism', 'knot theory'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210033'] | ['In the physical interpretation of states in non-perturbative loop quantum gravity the so-called weave states play an important role. Until now only weaves representing flat geometries have been introduced explicitly. In this paper the construction of weaves for non-flat geometries is described; in particular, weaves ... | ['2002-07-01'] |
17,960 | ['eng'] | ['Visser, B M'] | ['From wormhole to time machine'] | ['Particle Physics - Theory'] | ['quantum gravity', 'loop space', 'time', 'topology', 'wormhole', 'energy, Casimir', 'Einstein equation, solution'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9202090'] | ["The recent interest in ``time machines'' has been largely fueled by the apparent ease with which such systems may be formed in general relativity, given relatively benign initial conditions such as the existence of traversable wormholes or of infinite cosmic strings. This rather disturbing state of affairs has led Ha... | ['2002-06-24'] |
17,961 | ['eng'] | ['Ooguri, H'] | ['Schwinger-Dyson equation in three-dimensional simplicial quantum gravity'] | ['Particle Physics - Theory'] | ['talk', 'quantum gravity, simplex', 'dimension, 3', 'matrix model', 'quantum group, SU(2)', 'partition function', 'Dyson-Schwinger equation', 'scattering amplitude, factorization', 'factorization, scattering amplitude'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210028'] | ["We study the simplicial quantum gravity in three dimensions. Motivated by the Boulatov's model which generates a sum over simplicial complexes weighted with the Turaev-Viro invariant, we introduce boundary operators in the simplicial gravity associated to compact orientable surfaces. An amplitude of the boundary oper... | ['2002-07-01'] |
17,962 | ['eng'] | ['Schiff, J'] | ['The Nonlinear Schrodinger Equation and Conserved Quantities in the Deformed Parafermion and SL(2,R)/U(1) Coset Models'] | ['Particle Physics - Theory'] | ['Schroedinger equation, nonlinear', 'differential equations, hierarchy', 'conservation law', 'fermion, parastatistics', 'Hamiltonian formalism', 'field theory, conformal', 'dimension, 2', 'coset space, SL(2,R)/U(1)'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210029'] | ['The relationship between the nonlinear Schrodinger hierarchy and the parafermion and SL(2,R)/U(1) coset models, analogous to the relationship between the KdV hierarchy and the minimal models, is explained. To do this I first present an in depth study of a series of integrable hierarchies related to NLS, and write dow... | ['2002-07-01'] |
17,963 | ['eng'] | ['Schwarz, J H'] | ['Dilaton-Axion Symmetry'] | ['Particle Physics - Theory'] | ['talk', 'string model, heterotic', 'dimension, 10', 'supergravity', 'gauge field theory, Yang-Mills', 'postulated particle, dilaton', 'postulated particle, axion', 'dimensional reduction', 'duality, transformation', 'symmetry, SL(2,R)', 'symmetry, O(N,M)'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209125'] | ['The heterotic string compactified on a six-torus is described by a low-energy effective action consisting of N=4 supergravity coupled to N=4 super Yang-Mills, a theory that was studied in detail many years ago. By explicitly carrying out the dimensional reduction of the massless fields, we obtain the bosonic sector o... | ['2002-07-01'] |
17,964 | ['eng'] | ['Grégoire, P', 'Henneaux, M'] | ['Hamiltonian BRST-anti-BRST Theory'] | ['Particle Physics - Theory'] | ['invariance, Becchi-Rouet-Stora', 'homology', 'cohomology', 'differential forms'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209062'] | ['The hamiltonian BRST-anti-BRST theory is developed in the general case of arbitrary reducible first class systems. This is done by extending the methods of homological perturbation theory, originally based on the use of a single resolution, to the case of a biresolution. The BRST and the anti-BRST generators are show... | ['2002-07-01'] |
17,965 | ['eng'] | ['Schwarz, A S', 'Tseytlin, Arkady A'] | ['Dilaton shift under duality and torsion of elliptic complex'] | ['Particle Physics - Theory'] | ['sigma model, nonlinear', 'dimension, 2', 'duality, transformation', 'operator, determinant', 'torsion', 'partition function'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210015'] | ['We observe that the ratio of determinants of $2d$ Laplacians which appear in the duality transformation relating two sigma models with abelian isometries can be represented as a torsion of an elliptic (DeRham) complex. As a result, this ratio can be computed exactly and is given by the exponential of a local function... | ['2002-07-01'] |
17,966 | ['eng'] | ['Langmann, E', 'Semenoff, Gordon W'] | ['Gauge Theories on a Cylinder'] | ['Particle Physics - Theory'] | ['gauge field theory, U(N)', 'fermion', 'dimension, 2', 'space-time', 'quantization', 'Hamiltonian formalism', 'Wilson loop', 'effective Hamiltonian'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210011'] | ['(a few typos and an error corrected)'] | ['2002-07-01'] |
17,967 | ['eng'] | ['Kallosh, R', 'Peet, A W'] | ['Dilaton Black Holes Near the Horizon'] | ['Particle Physics - Theory'] | ['black hole', 'supersymmetry, symmetry breaking', 'symmetry, U(1) x U(1)', 'field theory, dilaton', 'dimension, 2', 'string model', 'dimension, 4'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209116'] | ['Generic $U(1)^2$ 4-d black holes with unbroken $N=1$ supersymmetry are shown to tend to a Robinson-Bertotti type geometry with a linear dilaton and doubling of unbroken supersymmetries near the horizon. Purely magnetic dilatonic black holes, which have unbroken $N=2$ supersymmetry, behave near the horizon as a 2-d li... | ['2002-07-01'] |
17,968 | ['eng'] | ['Pope, C N', 'Sezgin, E', 'Stelle, Kellogg S', 'Wang, X J'] | ['Discrete States in the $W_3$ String'] | ['Particle Physics - Theory'] | ['string model', 'symmetry, W(3)', 'momentum, discrete', 'algebra, Becchi-Rouet-Stora'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209111'] | ['We construct the low-lying discrete states of the two-scalar $W_3$ string. This includes states that correspond to the analogues of the ground ring generators of the ordinary two-dimensional string. These give rise to infinite towers of discrete states at higher levels.'] | ['2002-07-01'] |
17,969 | ['eng'] | ['Devchand, C', 'Ogievetsky, V I'] | ['Super Self-Duality as Analyticity in Harmonic Superspace'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'supersymmetry, superspace', 'duality', 'twistor'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209120'] | ['A twistor correspondence for the self-duality equations for supersymmetric Yang-Mills theories is developed. Their solutions are shown to be encoded in analytic harmonic superfields satisfying appropriate generalised Cauchy-Riemann conditions. An action principle yielding these conditions is presented.'] | ['2002-07-01'] |
17,970 | ['eng'] | ['Ferretti, G', 'Rajeev, S G', 'Yang, Z'] | ['Three Dimensional Quantum Chromodynamics'] | ['Particle Physics - Theory'] | ['talk', 'gauge field theory, SU(N)', 'fermion', 'dimension, 3', 'symmetry, spontaneously broken', 'effective Lagrangian', 'current algebra'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209129'] | ["The subject of this talk was the review of our study of three ($2+1$) dimensional Quantum Chromodynamics. In our previous works, we showed the existence of a phase where parity is unbroken and the flavor group $U(2n)$ is broken to a subgroup $U(n)\\times U(n)$. We derived the low energy effective action for the theor... | ['2002-07-01'] |
17,971 | ['eng'] | ['Destri, C', 'Maraner, P', 'Onofri, E'] | ['On the definition of Quantum Free Particle on Curved Manifolds'] | ['Particle Physics - Theory'] | ['quantum mechanics', 'particle', 'space-time, any-dimensional', 'differential geometry', 'dimensional reduction', 'topology'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210027'] | ['A selfconsistent definition of quantum free particle on a generic curved manifold emerges naturally by restricting the dynamics to submanifolds of co-dimension one. PACS 0365 0240'] | ['2002-07-01'] |
17,972 | ['eng'] | ['Park, Y', 'Strominger, A'] | ['Supersymmetry and Positive Energy in Classical and Quantum Two-Dimensional Dilaton Gravity'] | ['Particle Physics - Theory'] | ['supersymmetry', 'gravitation', 'quantum gravity', 'field theory, dilaton', 'dimension, 2', 'invariance, conformal', 'energy, >0', 'black hole'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210017'] | ['An $N = 1$ supersymmetric version of two dimensional dilaton gravity coupled to matter is considered. It is shown that the linear dilaton vacuum spontaneously breaks half the supersymmetries, leaving broken a linear combination of left and right supersymmetries which squares to time translations. Supersymmetry sugges... | ['2002-07-01'] |
17,973 | ['eng'] | ['Lukyanov, S', 'Shatashvili, S L'] | ['Free Field Representation for the Classical Limit of Quantum Affine Algebra'] | ['Particle Physics - Theory'] | ['field theory, conformal', 'dimension, 2', 'Wess-Zumino-Witten model', 'Hamiltonian formalism', 'Yang-Baxter equation, solution', 'R-matrix', 'current algebra', 'quantum algebra, affine', 'quantum algebra, representation', 'approximation, classical'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209130'] | ['Free field representation for the classical limit of quantum affine algebra is constructed by simple deformation of the known expressions from WZW theory.'] | ['2002-07-01'] |
17,974 | ['eng'] | ['Laartz, J', 'Bordemann, Martin', 'Forger, M', 'Schäper, U'] | ['New classical r-matrices from integrable non-linear sigma models'] | ['Particle Physics - Theory'] | ['talk, Salamanca 1992/06/29', 'sigma model, nonlinear', 'dimension, 2', 'integrability', 'differential equations, Lax', 'current algebra', 'R-matrix', 'Hamiltonian formalism'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209108'] | ['Non linear sigma models on Riemannian symmetric spaces constitute the most general class of classical non-linear sigma models which are known to be integrable. Using the current algebra structure of these models their canonical structure is analysed and it is shown that their non ultralocal fundamental Poisson bracke... | ['2002-07-01'] |
17,975 | ['eng'] | ['Bais, F A', 'Tjin, T', 'Van Driel, P', 'De Boer, J', 'Goeree, J'] | ['W Algebras, W Gravities and their Moduli Spaces'] | ['Particle Physics - Theory'] | ['talk', 'gravitation', 'algebra, W(N)', 'algebra, representation', 'moduli space'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210004'] | ["By generalizing the Drinfel'd--Sokolov reduction we construct a large class of W algebras as reductions of Kac--Moody algebras. Furthermore we construct actions, invariant under local left and right W transformations, which are the classical covariant induced actions for W gravity. Talk presented by T. Tjin at the Tr... | ['2002-07-01'] |
17,976 | ['eng'] | ['Kuniba, A', 'Nakanishi, T'] | ['Rogers dilogarithm in integrable systems'] | ['Particle Physics - Theory'] | ['talk', 'differential equations, integrability', 'scaling', 'dimension, 2', 'analytic properties', 'Yang-Baxter equation'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210025'] | ['We dicuss some curious aspects of the Rogers dilogarithm and the functional relations in integrable systems in two dimensions. This is for the proceedings of the XX1 Differential Geometry Methods in Theoretical Physics, Tianjin, China, 5-9 June 1992.'] | ['2002-07-01'] |
17,977 | ['eng'] | ['Bowick, M J'] | ['Finite Temperature Strings'] | ['Particle Physics - Theory'] | ['talk', 'string model', 'statistical mechanics', 'finite temperature', 'phase space', 'energy levels, density', 'asymptotic expansion', 'path integral', 'number theory'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210016'] | ['These are lecture notes for the 1992 Erice Workshop on String Quantum Gravity and Physics at the Planck Energy Scale. In this talk a review of earlier work on finite temperature strings was presented. Several topics were covered, including the canonical and microcanonical ensemble of strings, the behavior of strings ... | ['2002-07-01'] |
17,978 | ['eng'] | ['Temple-Raston, M', 'Alexander, D'] | ['Differential cross-sections and escape plots for low energy $SU(2)$ BPS magnetic monopole dynamics'] | ['Particle Physics - Theory'] | ['postulated particle, magnetic monopole', 'scattering, magnetic monopole', 'magnetic monopole, scattering', 'gauge field theory, SU(2)', 'Higgs model', 'field equations, soliton', 'differential cross section', 'approximation, geodesic', 'postulated particle, dyon', 'boundary condition', 'numerical calculations'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209063'] | ["We compute the low-energy classical differential scattering cross-section for BPS $SU(2)$ magnetic monopoles using the geodesic approximation to the actual dynamics and 16K parallel processors on a CM2. Numerical experiments suggest that the quantum BPS magnetic monopole differential cross-section is well-approximate... | ['2002-07-01'] |
17,979 | ['eng'] | ['Hikami, S', 'Brézin, E'] | ['Perturbative analysis of an n-Ising model on a random surface'] | ['Particle Physics - Theory'] | ['quantum gravity', 'dimension, 2', 'matter, conformal', 'Ising model', 'random surface', 'astrophysics, fundamental constant', 'expansion, fundamental constant', 'string, susceptibility'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209022'] | ['Two dimensional quantum gravity coupled to a conformally invariant matter field of central charge c=n/2, is represented, in a discretized version, by n independent Ising spins per cell of the triangulations of a random surface. The matrix integral representation of this model leads to a diagrammatic expansion at larg... | ['2002-07-01'] |
17,980 | ['eng'] | ['Avan, J', 'Jevicki, A'] | ['Interacting Theory of Collective and Topological Fields in 2 Dimensions'] | ['Particle Physics - Theory'] | ['field theory, boson', 'effective Hamiltonian', 'dimension, 2', 'fermion', 'algebra, W(infinity)', 'field theory, topological', 'field theory, collective', 'dimension, 3', 'current algebra, Toda', 'differential equations, Lax', 'bibliography'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209036'] | ['We propose a generalization of the collective field theory hamiltonian, including interactions between the original bosonic collective field $w_0 (z)$ and supplementary fields ${\\bar w}_j (z)$ realizing classically a $w_\\infty$ algebra. The latter are then shown to represent a 3--dimensional topological field theor... | ['2002-07-01'] |
17,981 | ['eng'] | ['Giddings, Steven B'] | ['Toy Models For Black Hole Evaporation'] | ['Particle Physics - Theory'] | ['talk', 'quantum gravity', 'black hole', 'radiation, Hawking'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209113'] | ['These are lecture notes for the 1992 Erice Workshop on Theoretical Physics. They first present a summary of the paradox of information loss to black holes, of its proposed resolutions, and of the flaws in the proposed resolutions. There follows a review of recent attempts to attack this problem, and other issues in b... | ['2002-07-01'] |
17,982 | ['eng'] | ['Hindmarsh, M', 'Holman, R', 'Kephart, T W', 'Vachaspati, T'] | ['Generalized Semilocal Theories and Higher Hopf Maps'] | ['Particle Physics - Theory'] | ['gauge field theory, U(1)', 'Higgs model', 'field theory, nonlocal', 'vacuum state', 'fibre bundle, Hopf', 'symmetry, SU(2) x U(1)/Z(2)'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209088'] | ['\\def\\mon{S^3\\stackrel{S^1}{\\rightarrow}S^2} \\def\\inst{S^7\\stackrel{S^3}{\\rightarrow}S^4} \\def\\octo{S^{15}\\stackrel{S^7}{\\rightarrow}S^8} In semilocal theories, the vacuum manifold is fibered in a non-trivial way by the action of the gauge group. Here we generalize the original semilocal theory (which was ... | ['2002-07-01'] |
17,983 | ['eng'] | ['Papadopoulos, G', 'Spence, B'] | ['The phase space of the Wess-Zumino-Witten model'] | ['Particle Physics - Theory'] | ['talk', 'Wess-Zumino-Witten model', 'diffeomorphism, phase space', 'parametrization', 'space-time, cylinder'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209095'] | ['We prove that the covariant and Hamiltonian phase spaces of the Wess-Zumino-Witten model on the cylinder are diffeomorphic and we derive the Poisson brackets of the theory.'] | ['2002-07-01'] |
17,984 | ['eng'] | ['Harvey, J A', 'Strominger, A'] | ['Quantum Aspects of Black Holes'] | ['Particle Physics - Theory'] | ['lectures', 'quantum gravity', 'black hole', 'space-time', 'radiation, Hawking', 'thermodynamics', 'entropy', 'dimension, 4', 'dimension, 2', 'field theory, dilaton', 'effective action', 'path integral', 'anomaly, conformal', 'bibliography', 'expansion 1/N'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209055'] | ['This review is based on lectures given at the 1992 Trieste Spring School on String Theory and Quantum Gravity and at the 1992 TASI Summer School in Boulder, Colorado.'] | ['2002-07-01'] |
17,985 | ['eng'] | ['Bouwknegt, P', 'Schoutens, K'] | ['W-symmetry in Conformal Field Theory'] | ['Particle Physics - Theory'] | ['review', 'field theory, conformal', 'dimension, 2', 'algebra, Virasoro', 'algebra, Kac-Moody', 'Wess-Zumino-Witten model', 'supersymmetry', 'topology, algebra', 'cohomology', 'supersymmetry', 'algebra, W(N)', 'algebra, Casimir', 'coset space', 'bibliography'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9210010'] | ['We review various aspects of $\\cW$-algebra symmetry in two-dimensional conformal field theory and string theory. We pay particular attention to the construction of $\\cW$-algebras through the quantum Drinfeld-Sokolov reduction and through the coset construction.'] | ['2002-07-01'] |
17,986 | ['eng'] | ['Brustein, Ram', 'Ovrut, B'] | ['Non-Perturbative Effects in 2-D String Theory or Beyond the Liouville Wall'] | ['Particle Physics - Theory'] | ['string model', 'dimension, 2', 'effect, nonperturbative', 'matrix model', 'field theory, collective', 'instanton', 'field theory, Liouville', 'expansion 1/N', 'effective action', 'invariance, Lorentz'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209081'] | ['We discuss continuous and discrete sectors in the collective field theory of $d=1$ matrix models. A canonical Lorentz invariant field theory extension of collective field theory is presented and its classical solutions in Euclidean and Minkowski space are found. We show that the discrete, low density, sector of colle... | ['2002-07-01'] |
17,987 | ['eng'] | ['Ader, J P', 'Kachkachi, H'] | ['The Polyakov action on the supertorus'] | ['Particle Physics - Theory'] | ['string model, action', 'effective action', 'supersymmetry, superspace', 'Riemann surfaces, torus', 'differential geometry', 'differential forms', 'transformation, Becchi-Rouet-Stora', 'transformation, diffeomorphism', 'anomaly'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9212098'] | ['A consistent method for obtaining a well-defined Polyakov action on the supertorus is presented. This method uses the covariantization of derivative operators and enables us to construct a Polyakov action which is globally defined.'] | ['2002-07-04'] |
17,988 | ['eng'] | ['Perret, R'] | ['Three dimensional field theories from infinite dimensional lie algebras'] | ['Particle Physics - Theory'] | ['field theory, topological', 'dimension, 3', 'algebra, Lie', 'algebra, Kac-Moody', 'algebra, Virasoro', 'gravitation, induced', 'gravitation, W(3)', 'dimension, 2', 'Wess-Zumino-Witten model, chiral', 'gauge field theory', 'Ward identity'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209087'] | ['A procedure for constructing topological actions from centrally extended Lie groups is introduced. For a \\km\\ group, this produces \\3al \\cs, while for the \\vir\\ group the result is a new \\3al \\tft\\ whose physical states satisfy the \\vir\\ \\wi. This \\tft\\ is shown to be a first order formulation of two di... | ['2002-07-01'] |
17,989 | ['eng'] | ['Dubrovin, B'] | ['Integrable Systems and Classification of 2-dimensional Topological Field Theories'] | ['Particle Physics - Theory'] | ['talk', 'field theory, topological', 'dimension, 2', 'path integral', 'correlation function', 'Korteweg-de Vries equation, hierarchy', 'bibliography'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209040'] | ['Misprints in the definition of semiclassical tau-function and in the formulae (3.40b) and (4.20) are corrected.'] | ['2002-07-01'] |
17,990 | ['eng'] | ['Aldazabal, G', 'Allekotte, I', 'Andrés, E C', 'Núñez, C'] | ["Nondiagonal $CP_m$ Coset Models and their Poincar\\'E Polynomials"] | ['Particle Physics - Theory'] | ['invariance, modular', 'string model', 'symmetry, discrete', 'coset space, SU(N+1)/SU(N) x U(1)'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209059'] | ["$N=2$ coset models of the type $SU(m+1)/SU(m)\\times U(1)$ with nondiagonal modular invariants for both $SU(m+1)$ and $SU(m)$ are considered. Poincar\\'e polynomials of the corresponding chiral rings of these algebras are constructed. They are used to compute the number of chiral generations of the associated string ... | ['2002-07-01'] |
17,991 | ['eng'] | ['Rozansky, L', 'Saleur, H'] | ['Reidemeister torsion, the Alexander polynomial and $U(1,1)$ Chern-Simons theory'] | ['Particle Physics - Theory'] | ['Chern-Simons term', 'gauge field theory, U(1,1)', 'supersymmetry', 'knot theory, Alexander polynomial', 'torsion'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209073'] | ['We show that the $U(1,1)$ (super) Chern Simons theory is one loop exact. This provides a direct proof of the relation between the Alexander polynomial and analytic and Reidemeister torsion. We then proceed to compute explicitely the torsions of Lens spaces and Seifert manifolds using surgery and the $S$ and $T$ matri... | ['2002-07-01'] |
17,992 | ['eng'] | ['Gannon, T'] | ['WZW Commutants, Lattices, and Level 1 Partition Functions'] | ['Particle Physics - Theory'] | ['field theory, conformal', 'invariance, modular', 'partition function, lattice', 'algebra, Lie', 'Wess-Zumino-Witten model'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209043'] | ["A natural first step in the classification of all `physical' modular invariant partition functions $\\sum N_{LR}\\,\\c_L\\,\\C_R$ lies in understanding the commutant of the modular matrices $S$ and $T$. We begin this paper extending the work of Bauer and Itzykson on the commutant from the $SU(N)$ case they consider t... | ['2002-07-01'] |
17,993 | ['eng'] | ['Gannon, T'] | ['Partition Functions for Heterotic WZW Conformal Field Theories'] | ['Particle Physics - Theory'] | ['field theory, conformal', 'Wess-Zumino-Witten model', 'partition function, heterotic', 'invariance, modular', 'algebra, lattice'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209042'] | ["Thus far in the search for, and classification of, `physical' modular invariant partition functions $\\sum N_{LR}\\,\\c_L\\,\\C_R$ the attention has been focused on the {\\it symmetric} case where the holomorphic and anti-holomorphic sectors, and hence the characters $\\c_L$ and $\\c_R$, are associated with the same ... | ['2002-07-01'] |
17,994 | ['eng'] | ['Broda, B'] | ['Quantum theory of non-abelian differential forms and link polynomials'] | ['Particle Physics - Theory'] | ['field theory, topological', 'differential forms, nonabelian', 'partition function', 'path integral', 'field theory, antifield', 'quantization, Becchi-Rouet-Stora'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209069'] | ['A topological quantum field theory of non-abelian differential forms is investigated from the point of view of its possible applications to description of polynomial invariants of higher-dimensional two-component links. A path-integral representation of the partition function of the theory, which is a highly on-shell... | ['2002-07-01'] |
17,995 | ['eng'] | ['Bazeia, D'] | ['Gauge Invariance in Chern-Simons Systems'] | ['Particle Physics - Theory'] | ['gauge field theory, U(1)', 'Chern-Simons term', 'dimension, 3', 'field theory, scalar', 'effective potential', 'perturbation theory, higher-order', 'invariance, gauge'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209026'] | ['We show explicitly that the question of gauge invariance of the effective potential in standard scalar electrodynamics remains unchanged despite the introduction of the Chern-Simons term. The result does not depend on the presence of the Maxwell term in the Chern-Simons territory.'] | ['2002-07-01'] |
17,996 | ['eng'] | ['De Vega, H J', 'Mikhailov, A V', 'Sánchez, N'] | ['Exact String Solutions in 2+1-Dimensional De Sitter Spacetime'] | ['Particle Physics - Theory'] | ['space-time, de Sitter', 'dimension, 3', 'string model', 'sinh-Gordon equation'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209047'] | ['Exact and explicit string solutions in de Sitter spacetime are found. (Here, the string equations reduce to a sinh-Gordon model). A new feature without flat spacetime analogy appears: starting with a single world-sheet, several (here two) strings emerge. One string is stable and the other (unstable) grows as the univ... | ['2002-07-01'] |
17,997 | ['eng'] | ['Dalley, S', 'Klebanov, Igor R'] | ['String Spectrum of 1+1-Dimensional Large N QCD with Adjoint Matter'] | ['Particle Physics - Theory'] | ['string model', 'matrix model', 'gauge field theory, SU(N)', 'field theory, scalar', 'fermion', 'dimension, 2', 'quantization', 'light cone gauge', 'energy levels', 'numerical calculations', 'expansion 1/N'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209049'] | ['We propose gauging matrix models of string theory to eliminate unwanted non-singlet states. To this end we perform a discretised light-cone quantisation of large N gauge theory in 1+1 dimensions, with scalar or fermionic matter fields transforming in the adjoint representation of SU(N). The entire spectrum consists o... | ['2002-07-01'] |
17,998 | ['eng'] | ['Chamseddine, A H', 'Felder, G', 'Fröhlich, J'] | ['Gravity in Non-Commutative Geometry'] | ['Particle Physics - Theory'] | ['relativity theory, general', 'differential geometry, noncommutative', 'space-time', 'Kaluza-Klein model', 'field theory, scalar'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209044'] | ['We study general relativity in the framework of non-commutative differential geometry. In particular, we introduce a gravity action for a space-time which is the product of a four dimensional manifold by a two-point space. In the simplest situation, where the Riemannian metric is taken to be the same on the two copie... | ['2002-07-01'] |
17,999 | ['eng'] | ['Bergshoeff, E A', 'Sevrin, A', 'Shen, X'] | ['A Derivation of the BRST Operator for Non-Critical W-Strings'] | ['Particle Physics - Theory'] | ['string model', 'algebra, W(3)', 'operator product expansion', 'quantization', 'operator, Becchi-Rouet-Stora', 'Lagrangian formalism'] | ['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9209037'] | ["We derive the recently proposed BRST charge for non-critical W strings from a Lagragian approach. The basic observation is that, despite appearances, the combination of two classical ``matter'' and ``Toda'' w_3 systems leads to a closed modified gauge algebra, which is of the so-called soft type. Based on these obser... | ['2002-07-01'] |
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