Unnamed: 0 int64 0 18.1k | language stringclasses 4
values | creator stringlengths 2 137 | title stringlengths 2 217 | subject stringclasses 15
values | keyword stringlengths 10 597 | identifier stringlengths 82 244 | description stringlengths 2 2.3k | date stringlengths 14 14 |
|---|---|---|---|---|---|---|---|---|
16,700 | ['eng'] | ['Elizalde, E', 'Odintsov, S D'] | ['Conformal factor dynamics in the 1/N expansion'] | ['General Theoretical Physics'] | ['relativity theory, general', 'fermion', 'dimension, 2', 'invariance, conformal', 'quantum gravity', 'effective action', 'renormalization group', 'astrophysics, fundamental constant', 'Jona-Lasinio-Nambu model', 'numerical calculations', 'expansion 1/N'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408101'] | ['We suggest to consider conformal factor dynamics as applying to composite boundstates, in frames of the 1/N expansion. In this way, a new model of effective theory for quantum gravity is obtained. The renormalization group (RG) analysis of this model provides a framework to solve the cosmological constant problem, si... | ['1994-08-22'] |
16,701 | ['eng'] | ['Apfeldorf, K M', 'Ordóñez, C R'] | ['Field redefinition invariance in quantum field theory'] | ['Particle Physics - Theory'] | ['space-time', 'path integral', 'field theory, transformation', 'Kaluza-Klein model', 'Feynman graph'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408100'] | ["We investigate the consequences of field redefinition invariance in quantum field theory by carefully performing nonlinear transformations in the path integral. We first present a ``paradox'' whereby a 1+1 freemassless scalar theory on a Minkowskian cylinder is reduced to an effectively quantum mechanical theory. We ... | ['1994-08-22'] |
16,702 | ['eng'] | ['Seiberg, N', 'Witten, Edward'] | ['Monopoles, duality and chiral symmetry breaking in N = 2 supersymmetric QCD'] | ['Particle Physics - Theory'] | ['gauge field theory, SU(2)', 'supersymmetry', 'symmetry breaking, chiral', 'postulated particle, magnetic monopole', 'duality', 'moduli space, singularity', 'matter, multiplet', 'multiplet, matter', 'quantum electrodynamics', 'effect, instanton'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408099'] | ['We study four dimensional N=2 supersymmetric gauge theories with matter multiplets. For all such models for which the gauge group is SU(2), we derive the exact metric on the moduli space of quantum vacua and the exact spectrum of the stable massive states. A number of new physical phenomena occur, such as chiral symm... | ['1994-08-22'] |
16,703 | ['eng'] | ['Dabholkar, A'] | ['Strings on a cone and black hole entropy'] | ['Particle Physics - Theory'] | ['talk, Bombay 1994/01/05', 'space-time', 'string model', 'field theory, orbifold', 'partition function', 'black hole', 'entropy'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408098'] | ['String propagation on a cone with deficit angle 2\\pi (1- \\frac{1}{N} ) is described by constructing a non-compact orbifold of a plane by a Z_{N} subgroup of rotations. It is modular invariant and has tachyons in the twisted sectors that are localized to the tip of the cone. A possible connection with the quantum co... | ['1994-08-22'] |
16,704 | ['eng'] | ['Freeman, M D'] | ['Conserved charges and soliton solutions in affine toda theory'] | ['Particle Physics - Theory'] | ['field theory, conformal', 'dimension, 2', 'field theory, Toda', 'field theory, affine', 'field equations, soliton', 'charge, conservation law'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408092'] | ['We study the conserved charges of affine Toda field theories by making use of the conformally invariant extension of these theories. We compute the values of all charges for the single soliton solutions, and show that these are related to eigenvectors of the Cartan matrix of the finite-dimensional Lie algebra underly... | ['1994-08-17'] |
16,705 | ['eng'] | ['Khare, A', 'MacKenzie, R', 'Paranjape, M B'] | ['On the Coleman-Hill theorem'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'Chern-Simons term', 'dimension, 3', 'mass, topological', 'topological, mass', 'perturbation theory, higher-order', 'effective action'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408091'] | ['The Coleman-Hill theorem prohibits the appearance of radiative corrections to the topological mass (more precisely, to the parity-odd part of the vacuum polarization tensor at zero momentum) in a wide class of abelian gauge theories in 2+1 dimensions. We re-express the theorem in terms of the effective action rather ... | ['1994-08-17'] |
16,706 | ['eng'] | ['Larsen, F', 'Wilczek, Frank'] | ['Geometric entropy, wave functionals, and fermions'] | ['Particle Physics - Theory'] | ['fermion, entropy', 'boson, entropy', 'entropy, geometrical', 'ground state, wave function', 'dimension, 2', 'black hole', 'path integral', 'density matrix'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408089'] | ["We develop techniques for calculating the ground state wave functional and the geometric entropy for some simple field theories. Special attention is devoted to fermions, which present special technical difficulties in this regard. Explicit calculations are carried through for free mass bosons and fermions in two dim... | ['1994-08-17'] |
16,707 | ['eng'] | ['Aurilia, A'] | ['Postmodern string theory'] | ['Particle Physics - Theory'] | ['mechanics, classical', 'string model', 'mathematical methods, stochastic', 'mathematical methods, variational', 'wave function', 'approximation, quasiclassical'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408088'] | ["In this paper we study the dynamics of a statistical ensemble of strings, building on a recently proposed gauge theory of the string geodesic field. We show that this stochastic approach is equivalent to the Carath\\'eodory formulation of the Nambu-Goto action, supplemented by an averaging procedure over the family o... | ['1994-08-17'] |
16,708 | ['eng'] | ['Kogan, I I', 'Kovner, A'] | ['A variational approach to the QCD wave functional'] | ['Particle Physics - Theory'] | ['gauge field theory, SU(N)', 'wave function', 'approximation, variational', 'invariance, gauge', 'sigma model', 'renormalization group', 'Wilson loop', 'energy, density', 'coupling constant, strong interaction', 'strong interaction, coupling constant', 'quantum chromodynamics', 'gluon, condensation', 'mass generation'... | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408081'] | ['We perform a variational calculation in the SU(N) Yang Mills theory in 3+1 dimensions. Our trial variational states are explicitly gauge invariant, and reduce to simple Gaussian states in the zero coupling limit. Our main result is that the energy is minimized for the value of the variational parameter away form the ... | ['1994-08-15'] |
16,709 | ['eng'] | ['Kao, H C', 'Lee, K', 'Lee, C', 'Lee, T'] | ['The Chern-Simons coefficient in the Higgs phase'] | ['Particle Physics - Theory'] | ['gauge field theory, U(1)', 'Higgs model', 'supersymmetry', 'perturbation theory, higher-order', 'propagator', 'effective action'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408079'] | ['We study one-loop corrections to the Chern-Simons coefficient \\kappa in abelian self-dual Chern-Simons Higgs systems and their N=2 and N=3 supersymmetric generalizations in both symmetric and asymmetric phases. One-loop corrections to the Chern-Simons coefficient of these systems turn out to be integer multiples of ... | ['1994-08-15'] |
16,710 | ['eng'] | ['Dvoeglazov, V V'] | ['Mapping between antisymmetric tensor and weinberg formulations'] | ['Particle Physics - Theory'] | ['talk, Zacatecas 1994/08/08', 'field theory, tensor', 'field equations', 'propagator', 'wave function'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408077'] | ['In the framework of classical field theory I consider the mapping between antisymmetric tensor matter fields and Weinberg 2(2S+1) component bispinor fields. It is shown that such the mapping exists and the equations which describe antisymmetric tensor matter fields coincide with the Hammer-Tucker ones completely and ... | ['1994-08-15'] |
16,711 | ['eng'] | ['Gervais, Jean-Loup', 'Roussel, J F'] | ['From weak to strong coupling in two-dimensional gravity'] | ['Particle Physics - Theory'] | ['quantum gravity', 'dimension, 2', 'approximation, weak coupling', 'weak coupling, approximation', 'approximation, strong coupling', 'strong coupling, approximation', 'field theory, Liouville', 'quantum group', 'central charge', 'n-point function'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408076'] | ['The strong coupling physics of two dimensional gravity at C=7, 13, 19 is deciphered, by building up on previous works along the same line (for a recent review, of the background material, see hep-th/9408069). It is shown that chirality becomes deconfined. The string suceptibility is derived, and found to be real cont... | ['1994-08-15'] |
16,712 | ['eng'] | ['Vafa, C', 'Witten, Edward'] | ['A strong coupling test of s-duality'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'supersymmetry', 'dimension, 4', 'effect, higher-twist', 'partition function', 'duality', 'strong coupling', 'field theory, conformal', 'field theory, rational', 'dimension, 2', 'string model', 'moduli space, instanton', 'invariance, modular', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408074'] | ['By studying the partition function of N=4 topologically twisted supersymmetric Yang-Mills on four-manifolds, we make an exact strong coupling test of the Montonen-Olive strong-weak duality conjecture. Unexpected and exciting links are found with two-dimensional rational conformal field theory.'] | ['1994-08-15'] |
16,713 | ['eng'] | ['Hadasz, L', 'Wegrzyn, P'] | ['Boundary terms in Nambu-Goto string action'] | ['Particle Physics - Theory'] | ['string model', 'dimension, 2', 'boundary condition', 'field equations, solution', 'stability', 'Regge poles', 'energy, density', 'numerical calculations'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408072'] | ['We investigate classical strings defined by the Nambu-Goto action with the boundary term added. We demonstrate that the latter term has a significant bearing on the string dynamics. It is confirmed that new action terms that depend on higher order derivatives of string coordinates cannot be considered as continuous p... | ['1994-08-15'] |
16,714 | ['eng'] | ['Nesterenko, V V', 'Feoli, A', 'Scarpetta, G'] | ['Dynamics of relativistic particle with Lagrangian dependent on acceleration'] | ['Particle Physics - Theory'] | ['particle, relativistic', 'Lagrangian formalism', 'differential forms', 'integrability', 'particle, acceleration'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408071'] | ['Models of relativistic particle with Lagrangian {\\cal L}(k_1), depending on the curvature of the worldline k_1, are considered. By making use of the Frenet basis, the equations of motion are reformulated in terms of the principal curvatures of the worldline. It is shown that for arbitrary Lagrangian function {\\cal ... | ['1994-08-15'] |
16,715 | ['eng'] | ['Lemes, V E R', 'Renan, R', 'Sorella, S P'] | ['Algebraic renormalization of antisymmetric tensor matter fields'] | ['General Theoretical Physics'] | ['gauge field theory, tensor', 'fermion', 'perturbation theory, higher-order', 'regularization', 'anomaly'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408067'] | ['The algebraic renormalization of a recently proposed abelian axial gauge model with antisymmetric tensor matter fields is presented.'] | ['1994-08-12'] |
16,716 | ['eng'] | ['Fursaev, D V'] | ['Black-hole thermodynamics and renormalization'] | ['Particle Physics - Theory'] | ['black hole, horizon', 'thermodynamics', 'entropy', 'renormalization', 'regularization, heat kernel', 'effective action', 'perturbation theory, higher-order'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408066'] | ['Ultraviolet regime in quantum theory with horizons, contrary to ordinary theory, depends on the temperature of the system due to additional surface divergences in the effective action. We evaluate their general one-loop structure paying attention to effects of the curvature of the space-time near the horizon. In part... | ['1994-08-12'] |
16,717 | ['eng'] | ['Mahapatra, S', 'Mukherji, S'] | ['Tachyon condensates and anisotropic universe'] | ['General Relativity and Cosmology'] | ['astrophysics, anisotropy', 'string model, boson', 'string, closed', 'tachyon, condensation', 'effective action', 'field theory, dilaton', 'astrophysics, anisotropy'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408063'] | ['We investigate the cosmological solutions in closed bosonic string theory in the presence of non zero tachyon condensate. We specifically obtain time dependent solutions which describe an anisotropic universe. We also discuss the nature of such time dependent solutions when small tachyon fluctuations around the conde... | ['1994-08-11'] |
16,718 | ['eng'] | ['Stanciu, S'] | ['Supersymmetric integrable hierarchies and string theory'] | ['Particle Physics - Theory'] | ['thesis', 'Korteweg-de Vries equation, hierarchy', 'integrability', 'supersymmetry', 'differential forms', 'Hamiltonian formalism', 'operator, Lax', 'phase space', 'Kadomtsev-Petviashvili equation', 'symmetry, transformation', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407189'] | ["This thesis is roughly organized into two parts. The first one (the first three chapters), expository in nature, attempts to place the current work in context: at first historically, but then focusing on the Lax formalism and the Adler--Gel'fand--Dickey scheme for hierarchies of the KdV type. The second part (the las... | ['1994-08-02'] |
16,719 | ['eng'] | ['Wetterich, C'] | ['High temperature field theory beyond perturbation theory'] | ['Particle Physics - Theory'] | ['Salam-Weinberg model', 'finite temperature, high', 'gauge field theory, action', 'infrared problem', 'perturbation theory, higher-order', 'electroweak interaction', 'approximation, strong coupling', 'strong coupling, approximation', 'effective potential', 'renormalization group', 'Higgs particle, mass', 'mass, Higgs ... | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408054'] | ["For realistic values of the Higgs boson mass the high temperature electroweak phase transition cannot be described perturbatively. The symmetric phase is governed by a strongly interacting SU(2) gauge theory. Typical masses of excitations and scales of condensates are set by the ``high temperature confinement scale''... | ['1994-08-10'] |
16,720 | ['eng'] | ['Barcelos-Neto, J', 'Silva, M B D'] | ['Symplectic quantization for reducible systems'] | ['Particle Physics - Theory'] | ['quantization, symplectic', 'quantization, Batalin-Vilkovisky', 'quantization, constraint', 'ghost', 'Lagrangian formalism', 'gauge field theory, abelian'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408044'] | ['We study an extension of the symplectic formalism in order to quantize reducible systems. We show that a procedure like {\\it ghost-of-ghost} of the BFV method can be applied in terms of Lagrange multipliers. We use the developed formalism to quantize the antisymmetric Abelian gauge fields.'] | ['1994-08-09'] |
16,721 | ['eng'] | ['Kikkawa, K', 'Tamura, H'] | ['Dynamical gauge field induced'] | ['Particle Physics - Theory'] | ['gauge field theory, U(1)', 'fermion', 'dimension, 6', 'spontaneous compactification, torus', 'field theory, induced', 'effective Lagrangian', 'Berry phase', 'transformation, gauge'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407160'] | ["Abstract: Some part of the local gauge symmetries in the low energy region, say, lower than GUT or the Planck energy can be an induced symmetry describable with the holonomy fields associated with a topologically non-trivial structure of partially compactified space. In the case where a six dimensional space is compa... | ['1994-07-26'] |
16,722 | ['eng'] | ['Larsen, A L'] | ['Circular strings in de Sitter spacetime'] | ['Particle Physics - Theory'] | ['talk', 'space-time, de Sitter', 'black hole', 'string model', 'symmetry, axial', 'propagator', 'effective potential', 'perturbation theory', 'mass, string', 'string, mass', 'numerical calculations'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408026'] | ['String propagation is investigated in de Sitter and black hole backgrounds using both exact and approximative methods. The circular string evolution in de Sitter space is discussed in detail with respect to energy and pressure, mathematical solution and physical interpretation, multi-string solutions etc. We compare ... | ['1994-08-05'] |
16,723 | ['eng'] | ['Fadeev, L'] | ['Current-like variables in massive and massless integrable models'] | ['Particle Physics - Theory'] | ['lectures, Varenna 1994/06/28', 'integrability', 'model, massive', 'massive, model', 'model, massless', 'massless, model', 'lattice field theory', 'field theory, conformal', 'algebra, Virasoro', 'sine-Gordon equation'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408041'] | ['Lectures delivered at the International School of Physics "Enrico Fermi", held in Villa Monastero, Varenna, Italy, 94.'] | ['1994-08-09'] |
16,724 | ['eng'] | ['Keski-Vakkuri, E', 'Lifschytz, G', 'Mathur, S D', 'Ortiz, M E'] | ['Breakdown of the semiclassical approximation at the black hole horizon'] | ['Particle Physics - Theory'] | ['black hole, horizon', 'dimension, 2', 'black hole, mass', 'mass, black hole', 'quantum mechanics, effect', 'gravitation', 'matter', 'radiation, Hawking', 'approximation, quasiclassical', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408039'] | ['The definition of matter states on spacelike hypersurfaces of a 1+1 dimensional black hole spacetime is considered. The effect of small quantum fluctuations of the mass of the black hole due to the quantum nature of the infalling matter is taken into account. It is then shown that the usual approximation of treating ... | ['1994-08-09'] |
16,725 | ['eng'] | ['Amorim, R', 'Barcelos-Neto, J'] | ['BFT quantization of chiral-boson theories'] | ['Particle Physics - Theory'] | ['boson, chiral', 'quantization', 'Wess-Zumino term', 'field theory, constraint'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408038'] | ['We use the method due to Batalin, Fradkin and Tyutin (BFT) for the quantization of chiral boson theories. We consider the Floreanini-Jackiw (FJ) formulation as well as others with linear constraints.'] | ['1994-08-09'] |
16,726 | ['eng'] | ['Soloviev, O A'] | ['Solutions of the master Virasoro equations as conformal points of perturbed WZNW model'] | ['Particle Physics - Theory'] | ['field theory, conformal', 'dimension, 2', 'Wess-Zumino-Witten model', 'master equation, Virasoro', 'operator product expansion', 'perturbation theory'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408034'] | ['It is shown that the master equation of the affine-Virasoro construction on the unitary affine algebra naturally emerges in the fusion algebra of the nonunitary level k WZNW model. Operators corresponding to solutions of the master equation are suitable for performing one-parametrical renormalizable perturbation arou... | ['1994-08-09'] |
16,727 | ['eng'] | ['Kalmykov, M Yu', 'Pronin, P I', 'Stepanyantz, K V'] | ['Projective invariance and one-loop effective action in affine-metric gravity interacting with scalar field'] | ['Particle Physics - Theory'] | ['quantum gravity', 'effective action', 'perturbation theory, higher-order', 'renormalization', 'gauge field theory', 'field theory, scalar', 'ghost'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408032'] | ['We investigate the influence of the projective invariance on the renormalization properties of the theory. One-loop counterterms are calculated in the most general case of interaction of gravity with scalar field.'] | ['1994-08-09'] |
16,728 | ['eng'] | ['Moritsch, O', 'Schweda, Manfred', 'Sommer, T'] | ['Yang-Mills gauge anomalies in the presence of gravity with torsion'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'transformation, Becchi-Rouet-Stora', 'gravitation, torsion', 'anomaly, gauge', 'Chern-Simons term', 'Wess-Zumino term'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408030'] | ['The BRST transformations for the Yang-Mills gauge fields in the presence of gravity with torsion are discussed by using the so-called Maurer-Cartan horizontality conditions. With the help of an operator \\d which allows to decompose the exterior spacetime derivative as a BRST commutator we solve the Wess-Zumino consi... | ['1994-08-09'] |
16,729 | ['eng'] | ['Okubo, S'] | ['New link invariants and yang-baxter equation'] | ['Particle Physics - Theory'] | ['Yang-Baxter equation, solution', 'R-matrix', 'knot theory'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407127'] | ["Abstract-- We have new solutions to the Yang-Baxter equation, from which we have constructed new link invariants containing more than two arbitrary parameters. This may be regarded as a generalization of the Jones' polynomial. We have also found another simpler invariant which discriminates only the linking structure... | ['1994-07-26'] |
16,730 | ['eng'] | ['Hoppe, J'] | ['Canonical 3 + 1 description of relativistic membranes'] | ['General Theoretical Physics'] | ['membrane model, p-brane', 'Hamiltonian formalism', 'invariance, diffeomorphism', 'dependence, gauge'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407103'] | ['M-dimensional extended objects \\Sigma can be described by projecting a Diff \\Sigma invariant Hamiltonian of time-independent Hamiltonian density {\\cal H} onto the Diff \\Sigma- singlet sector, which after Hamiltonian reduction, using {\\cal H} itself for one of the gauge-fixing conditions, results in a non-local d... | ['1994-07-18'] |
16,731 | ['eng'] | ['Cotta-Ramusino, P', 'Martellini, M'] | ['BF Theories and 2-knots'] | ['Particle Physics - Theory'] | ['talk', 'gauge field theory, tensor', 'field theory, topological', 'fibre bundle', 'Wilson loop', 'knot theory', 'path integral', 'constraint'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407097'] | ['We discuss the relations between (topological) quantum field theories in 4 dimensions and the theory of 2-knots (embedded 2-spheres in a 4-manifold). The so-called BF theories allow the construction of quantum operators whose trace can be considered as the higher-dimensional generalization of Wilson lines for knots i... | ['1994-07-18'] |
16,732 | ['eng'] | ['Bonelli, G', 'Marchetti, P A', 'Matone, M'] | ['Nonperturbative 2D gravity, punctured spheres and $\\vartheta$-vacua in string theories'] | ['Particle Physics - Theory'] | ['quantum gravity, nonperturbative', 'dimension, 2', 'vacuum state, Theta parameter', 'string model', 'moduli space', 'matter, conformal', 'asymptotic expansion'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407091'] | ['We consider a model of 2D gravity with the coefficient of the Einstein-Hilbert action having an imaginary part \\pi/2. This is equivalent to introduce a \\Theta-vacuum structure in the genus expansion whose effect is to convert the expansion into a series of alternating signs, presumably Borel summable. We show that ... | ['1994-07-18'] |
16,733 | ['eng'] | ['Van Holten, J W'] | ['Relations between some analytic representations of one-loop scalar integrals'] | ['General Theoretical Physics'] | ['phi**n model', 'path integral', 'n-point function', 'perturbation theory, higher-order'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408027'] | ['We compare several parametrized analytic expressions for an arbitrary off-shell one-loop n-point function in scalar field theory in D-dimensional space-time, and show their equivalence both directly and through path-integral methods.'] | ['1994-08-05'] |
16,734 | ['eng'] | ['Latorre, J I', 'Pascual, P J', 'Tarrach, Rolf'] | ['Speed of light in non-trivial vacua'] | ['General Theoretical Physics'] | ['photon, velocity', 'vacuum state', 'electron, mass', 'mass, electron', 'energy, density', 'particle, massless', 'massless, particle', 'quantum electrodynamics', 'perturbation theory, higher-order', 'phi**n model, 4', 'effect, Casimir', 'finite temperature'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408016'] | ['We unify all existing results on the change of the speed of low--energy photons due to modifications of the vacuum, finding that it is given by a universal constant times the quotient of the difference of energy densities between the usual and modified vacua over the mass of the electron to the fourth power. Whether ... | ['1994-08-04'] |
16,735 | ['eng'] | ['García-Bellido, J', 'Linde, Andrei D'] | ['Stationarity of inflation and predictions of quantum cosmology'] | ['Particle Physics - Theory'] | ['inflationary universe', 'chaos', 'domain wall', 'quantum cosmology', 'field theory, scalar', 'coupling, gravitation', 'gravitation, coupling', 'anomaly, conformal', 'astrophysics, fundamental constant', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408023'] | ['We describe several different regimes which are possible in inflationary cosmology. The simplest one is inflation without self-reproduction of the universe. In this scenario the universe is not stationary. The second regime, which exists in a broad class of inflationary models, is eternal inflation with the self-repr... | ['1994-08-04'] |
16,736 | ['eng'] | ['Kunitomo, H', 'Sakaguchi, M', 'Tokura, A'] | ['A hierarchy of super W strings'] | ['Particle Physics - Theory'] | ['string model, hierarchy', 'supersymmetry, superspace', 'vacuum state', 'algebra, W(N)', 'operator product expansion', 'charge, Becchi-Rouet-Stora', 'symmetry breaking'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408007'] | ['Abstract: It is shown that the N-extended super w_n\\ string can be obtained as a special class of vacua of both the N-extended super w_{n+1}\\ string and the (N+1)-extended super w_n\\ string. This hierarchy of super w\\ string theories includes as subhierarchies both the superstring hierarchy given by Bastianelli, ... | ['1994-08-03'] |
16,737 | ['eng'] | ['Fujii, A'] | ['Finite-size analysis of O(N) nonlinear $\\sigma$ model on semi-compact spaces'] | ['Particle Physics - Theory'] | ['sigma model, nonlinear', 'symmetry, O(N)', 'dimension, 3', 'partition function', 'effective action', 'mass spectrum', 'correlation, length'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408015'] | ["Abstract: Fisher's phenomenological renormalization method is used to calculate the mass gap and the correlation length of the O(N) nonlinear \\sigma model on a semi-compact space S^{1}\\times {\\bf R}^{2}. This shows that the ultraviolet momentum cut-off does not conflict with the infrared cut-off along the S^{1} di... | ['1994-08-03'] |
16,738 | ['eng'] | ['Seiberg, N'] | ['The power of holomorphy'] | ['Particle Physics - Theory'] | ['talk', 'supersymmetry', 'Wess-Zumino model', 'gauge field theory, Yang-Mills', 'vacuum state', 'symmetry breaking, chiral', 'confinement', 'moduli space', 'renormalization'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408013'] | ['Holomorphy of the superpotential and of the coefficient of the gauge kinetic terms in supersymmetric theories lead to powerful results. They are the underlying conceptual reason for the important non-renormalization theorems. They also enable us to study the exact non-perturbative dynamics of these theories. We find ... | ['1994-08-03'] |
16,739 | ['eng'] | ['Dunbar, D C', 'Norridge, P S'] | ['Calculation of graviton scattering amplitudes using string-based methods'] | ['Particle Physics - Theory'] | ['quantum gravity', 'postulated particle, graviton', 'scattering amplitude, graviton', 'graviton, scattering amplitude', 'string model', 'perturbation theory, higher-order', 'supersymmetry, multiplet', 'multiplet, supersymmetry', 'unitarity'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408014'] | ['Abstract:Techniques based upon the string organisation of amplitudes may be used to simplify field theory calculations. We apply these techniques to perturbative gravity and calculate all one-loop amplitudes for four-graviton scattering with arbitrary internal particle content. Decomposing the amplitudes into contrib... | ['1994-08-03'] |
16,740 | ['eng'] | ['Baacke, J', 'Daiber, T'] | ['One-loop corrections to the instanton transition in the two-dimensional Abelian Higgs model'] | ['Particle Physics - Theory'] | ['gauge field theory, U(1)', 'Higgs model', 'dimension, 2', 'field theory, instanton', 'fermion, determinant', 'partial wave analysis', 'zero mode', 'effective action', 'perturbation theory, higher-order', 'numerical calculations'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408010'] | ['Abstract: We present an evaluation of the fluctuation determinant which appears as a prefactor in the instanton transition rate for the two-dimensional Abelian Higgs model. The corrections are found to change the rate at most by a factor of 2 for 0.4 < M_W/M_H < 2.0.'] | ['1994-08-03'] |
16,741 | ['eng'] | ['Berceanu, S'] | ['The coherent states'] | ['General Theoretical Physics'] | ['quantum group, representation', 'linear spaces, Hilbert space', 'coset space', 'coherent state'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408008'] | ['A geometric characterization of transition amplitudes between coherent states, or equivalently, of the hermitian scalar product of holomorphic cross sections in the associated D - M tilda - module, in terms of the embedding of the cohe- rent state manifold M-tilda into a projective Hilbert space is proposed. Cohe- re... | ['1994-08-03'] |
16,742 | ['eng'] | ['Borstnik, N M'] | ['Unification of spins and charges in Grassmann space'] | ['Particle Physics - Theory'] | ['space-time, Grassmann', 'dimension, >5', 'spin', 'charge', 'unified field theory'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408002'] | ['In a space of d ( d > 5) ordinary and d Grassmann coordinates, fields manifest in an ordinary four-dimensional subspace as spinor (1/2, 3/2), scalar, vector or tensor fields with the corresponding charges , according to two kinds of generators of the Lorentz transformations in the Grassmann space. Vielbeins and spin ... | ['1994-08-02'] |
16,743 | ['eng'] | ['Saleur, H', 'Skorik, S', 'Warner, N P'] | ['The boundary sine-Gordon theory'] | ['Particle Physics - Theory'] | ['sine-Gordon model', 'field theory, conformal', 'dimension, 2', 'field theory, action', 'field equations, soliton', 'S-matrix', 'approximation, quasiclassical', 'numerical calculations'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408004'] | ['We consider the sine-Gordon model on a half-line, with an additional potential term of the form -M\\cos{\\beta\\over 2}(\\varphi-\\varphi_0) at the boundary. We compute the classical time delay for general values of M, \\beta and \\varphi_0 using \\tau-function methods and show that in the classical limit, the method... | ['1994-08-02'] |
16,744 | ['eng'] | ['Oh, C H', 'Singh, K'] | ['Realizations of the q-Heisenberg and q-Virasoro algebras'] | ['Particle Physics - Theory'] | ['algebra, Heisenberg', 'algebra, Virasoro', 'algebra, deformation', 'quantum algebra, representation', 'field theory', 'operator product expansion'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408001'] | ['We give field theoretic realizations of both the q-Heisenberg and the q-Virasoro algebra. In particular, we obtain the operator product expansions among the current and the energy momentum tensor obtained using the Sugawara construction.'] | ['1994-08-02'] |
16,745 | ['eng'] | ['Aroca, J M', 'Baig, M', 'Fort, H'] | ['The lagrangian loop representation of lattice U(1) gauge theory'] | ['Particle Physics - Theory'] | ['gauge field theory, U(1)', 'lattice field theory, action', 'Lagrangian formalism', 'Hamiltonian formalism', 'quantum electrodynamics, compact', 'loop space', 'flux tube', 'string model', 'numerical calculations, Monte Carlo'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407170'] | ['It is showed how the Hamiltonian lattice loop representation can be cast straightforwardly in the Lagrangian formalism. The procedure is general and here we present the simplest case: pure compact QED. This connection has been shaded by the non canonical character of the algebra of the fundamental loop operators. The... | ['1994-07-27'] |
16,746 | ['eng'] | ['Langmann, E', 'Mickelsson, J'] | ['3+1 -dimensional Schwinger terms and non-commutative geometry'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'Schwinger terms', 'operator, algebra', 'algebra, Lie', 'commutation relations', 'differential geometry, noncommutative', 'differential forms'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407193'] | ["Abstract: We discuss 2-cocycles of the Lie algebra \\Map(M^3;\\g) of smooth, compactly supported maps on 3-dimensional manifolds M^3 with values in a compact, semi-simple Lie algebra \\g. We show by explicit calculation that the Mickelsson-Faddeev-Shatashvili cocycle \\f{\\ii}{24\\pi^2}\\int\\trac{A\\ccr{\\dd X}{\\dd... | ['1994-08-02'] |
16,747 | ['eng'] | ['Fiore, G'] | ['The Euclidean Hopf algebra U$_{q}$(e$^{N}$) and its fundamental Hilbert space representations'] | ['Mathematical Physics and Mathematics'] | ['algebra, diffeomorphism', 'algebra, Hopf', 'quantum space, Euclidean', 'algebra, representation', 'linear spaces, Hilbert space'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407195'] | ["We construct the Euclidean Hopf algebra U_q(e^N) dual of Fun(\\rn_q^N\\lcross SO_{q^{-1}}(N)) by realizing it as a subalgebra of the differential algebra \\DFR on the quantum Euclidean space \\rn_q^N; in fact, we extend our previous realization \\cite{fio4} of U_{q^{-1}}(so(N)) within \\DFR through the introduction o... | ['1994-08-02'] |
16,748 | ['eng'] | ['Bonneau, G'] | ['On a possible breaking of global N = 2 supersymmetry in non-linear $\\sigma$ models on compact Kähler target spaces'] | ['Particle Physics - Theory'] | ['talk, Paris 1994/07/18', 'sigma model, nonlinear', 'supersymmetry, symmetry breaking', 'field theory, Kaehler', 'cohomology, Becchi-Rouet-Stora', 'renormalization', 'anomaly'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407197'] | ['We analyse with the algebraic, regularisation independent, cohomological B.R.S. methods, the renormalisability of torsionless N=2 supersymmetric non-linear \\si models built on compact K\\"ahler spaces. Surprisingly enough with respect to the common wisdom, we obtain an anomaly candidate, when the Hodge number h^{3,0... | ['1994-08-02'] |
16,749 | ['eng'] | ['Abdalla, Elcio', 'Abdalla, Maria Christina B'] | ['Higher algebras and mesonic spectrum in two-dimensional QCD'] | ['Particle Physics - Theory'] | ['quantum chromodynamics', 'dimension, 2', 'bosonization', 'operator, composite', 'algebra, W(infinity)', 'meson, mass spectrum', 'mass spectrum, meson', 'Regge poles'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407194'] | ['We construct composite operators in two-dimensional bosonized QCD, which obey a W_\\infty algebra, and discuss their relation to analogous objects recently obtained in the fermionic language. A complex algebraic structure is unravelled, supporting the idea that the model is integrable. For singlets we find a mass spe... | ['1994-08-02'] |
16,750 | ['eng'] | ['Berkovits, N', 'Vafa, C'] | ['N = 4 topological strings'] | ['General Theoretical Physics'] | ['string model', 'supersymmetry', 'dimension, 2', 'field theory, conformal', 'field theory, topological', 'n-point function', 'operator product expansion', 'partition function', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407190'] | ['We show how to make a topological string theory starting from an N=4 superconformal theory. The critical dimension for this theory is \\hat c= 2 (c=6). It is shown that superstrings (in both the RNS and GS formulations) and critical N=2 strings are special cases of this topological theory. Applications for this new t... | ['1994-08-02'] |
16,751 | ['eng'] | ['Hosotani, Y'] | ['Spontaneous breakdown of the Lorentz invariance and the Nambu-Goldstone theorem'] | ['Particle Physics - Theory'] | ['talk, Snowmass 1994/06/29', 'gauge field theory, U(1)', 'Chern-Simons term', 'fermion', 'magnetic field', 'dimension, 3', 'symmetry breaking, Lorentz', 'symmetry, spontaneously broken', 'Goldstone theorem', 'Snowmass 1994/06/29, talk'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407188'] | ['In a class of three-dimensional abelian gauge theory the Lorentz invariance is spontaneously broken by dynamical generation of a magnetic field. An originally topologically massive photon becomes gapless, i.e. p_0=0 at {\\vec p}=0. Indeed, the photon is the Nambu-Goldstone boson associated with the spontaneous breaki... | ['1994-08-02'] |
16,752 | ['eng'] | ['Frau, M', 'Lerda, A', 'Sciuto, S'] | ['Anyons and deformed lie algebras'] | ['Particle Physics - Theory'] | ['talk, Varenna 1994/06/28', 'postulated particle, anyon', 'statistics, fractional', 'dimension, 2', 'quantum group', 'algebra, Lie', 'algebra, deformation', 'algebra, oscillator', 'bosonization'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407161'] | ['We discuss the connection between anyons (particles with fractional statistics) and deformed Lie algebras (quantum groups). After a brief review of the main properties of anyons, we present the details of the anyonic realization of all deformed classical Lie algebras in terms of anyonic oscillators. The deformation p... | ['1994-07-26'] |
16,753 | ['eng'] | ['Weiner, M D'] | ['Bosonic construction of vertex operator para-algebras from symplectic affine Kac-Moody algebras'] | ['Particle Physics - Theory'] | ['Thesis'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9406149'] | ["The representation theory of affine Kac-Moody Lie algebras has grown tremendously since their independent introduction by Robert V. Moody and Victor G. Kac in 1968. Inspired by mathematical structures found by theoretical physicists, and by the desire to understand the ``monstrous moonshine'' of the Monster group, th... | ['1994-06-23'] |
16,754 | ['eng'] | ['Lunev, F A'] | ['Four dimensional yang - mills theory in local gauge invariant variables'] | ['Particle Physics - Theory'] | ['gauge field theory, SU(N)', 'field theory, parametrization', 'invariance, gauge', 'unitary gauge', 'gauge field theory, GL(N,C)'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407175'] | ['ABSTRACT It is presented the general method that allows to formulate 4D SU(N) Yang - Mills theory in terms of only local gauge invariant variables. For the case N=2, that is discussed in details, this gauge invariant formulation appears to be very similar to R^2 -gravity.'] | ['1994-07-27'] |
16,755 | ['eng'] | ['Poppitz, E R', 'Randall, L'] | ['Low-energy kahler potentials in supersymmetric gauge theories with (ALMOST) flat directions'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'supersymmetry, superfield', 'potential, Kaehler', 'potential, flat direction'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407185'] | ['We derive the supersymmetric low-energy effective theory of the D-flat directions of a supersymmetric gauge theory. The Kahler potential of Affleck, Dine and Seiberg is derived by applying holomorphic constraints which manifestly maintain supersymmetry. We also present a simple procedure for calculating all derivativ... | ['1994-07-28'] |
16,756 | ['eng'] | ['Howe, Paul S', 'Papadopoulos, G J', 'West, Peter C'] | ['Free fermions and extended conformal algebras'] | ['Particle Physics - Theory'] | ['fermion', 'current, conservation law', 'operator product expansion', 'algebra, conformal', 'algebra, SU(3)', 'algebra, G(2)', 'algebra, Spin(7)', 'Spin(7), algebra'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407183'] | ['A class of algebras is constructed using free fermions and the invariant antisymmetric tensors associated with irreducible holonomy groups.'] | ['1994-07-28'] |
16,757 | ['eng'] | ['Coussaert, O', 'Henneaux, M'] | ['Self-dual solutions of 2+1 Einstein gravity with a negative cosmological constant'] | ['Particle Physics - Theory'] | ['talk, Santiago 1994/01/17', 'relativity theory, general', 'dimension, 3', 'Einstein equation, solution', 'astrophysics, fundamental constant', 'duality', 'string model', 'black hole'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407181'] | ['All the causally regular geometries obtained from (2+1)-anti-de Sitter space by identifications by isometries of the form P \\rightarrow (\\exp \\pi\\xi) P, where \\xi is a self-dual Killing vector of so(2,2), are explicitely constructed. Their remarkable properties (Killing vectors, Killing spinors) are listed. Thes... | ['1994-07-28'] |
16,758 | ['eng'] | ['Fradkin, E S', 'Schaposnik, F A'] | ['The fermion-boson mapping in three dimensional quantum field theory'] | ['Particle Physics - Theory'] | ['Thirring model, massive', 'massive, Thirring model', 'gauge field theory, U(1)', 'Chern-Simons term', 'dimension, 3', 'partition function', 'bosonization', 'statistics, fractional'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407182'] | ['We discuss bosonization in three dimensions by establishing a connection between the massive Thirring model and the Maxwell-Chern-Simons theory. We show, to lowest order in inverse fermion mass, the identity between the corresponding partition functions; from this, a bosonization identity for the fermion current, val... | ['1994-07-28'] |
16,759 | ['eng'] | ['Rudd, R E'] | ['The string partition function for QCD on the torus'] | ['Particle Physics - Theory'] | ['gauge field theory, SU(N)', 'gauge field theory, U(N)', 'dimension, 2', 'field theory, torus', 'partition function', 'lattice field theory, continuum limit', 'energy', 'Riemann surfaces'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407176'] | ['We study the free energy of the pure glue QCD string with a torus target space and the gauge groups SU(N) and (chiral) U(N). It is highly constrained by a strong/weak gauge coupling duality which results in modular covariance. The string free energy is computed exactly in terms of modular forms for worldsheet genera ... | ['1994-07-27'] |
16,760 | ['eng'] | ['Lunev, F A'] | ['Differential equations for definition and evaluation of feynman integrals'] | ['Particle Physics - Theory'] | ['Feynman graph, higher-order', 'regularization', 'differential equations', 'mathematical methods'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407174'] | ['ABSTRACT It is shown that every Feynman integral can be interpreted as Green function of some linear differential operator with constant coefficients. This definition is equivalent to usual one but needs no regularization and application of R-operation. It is argued that presented formalism is convenient for practica... | ['1994-07-27'] |
16,761 | ['eng'] | ['Ansari, N A', 'Di Fiore, L', 'Manko, M A', "Man'ko, V I", 'Romano, R', 'Solimeno, S', 'Zaccaria, F'] | ['Nonclassical light in interferometric measurements'] | ['Particle Physics - Theory'] | ['talk, Cocoyoc 1994/03/23', 'gravitational radiation, counters and detectors', 'photon, coherent state', 'interference, laser'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407171'] | ['Abstract: It is shown that the even and odd coherent light and other nonclassical states of light like superposition of coherent states with different phases may replace the squeezed light in interferometric gravitational wave detector to increase its sensitivity. (Contribution to the Second Workshop on Harmonic Osci... | ['1994-07-27'] |
16,762 | ['eng'] | ['Jadczyk, A'] | ['Particle tracks, events and quantum theory'] | ['General Theoretical Physics'] | ['quantum mechanics, measurement', 'tracks, droplet', 'model, cloud chamber', 'Schroedinger equation', 'uncertainty relations', 'field equations, Liouville'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407157'] | ["Abstract: The law of track formation in cloud chambers is derived from the Liouville equation with a simple Lindblad's type generator that describes coupling between a quantum particle and a classical, continuous, medium of two--state detectors. Piecewise deterministic random process (PDP) corresponding to the Liouvi... | ['1994-07-26'] |
16,763 | ['eng'] | ['Brustein, Ram', 'Faux, M', 'Ovrut, B A'] | ['Supersymmetric field theory from supermatrix models'] | ['General Theoretical Physics'] | ['talk, Rakhov 1994/02/12', 'matrix model, continuum limit', 'supersymmetry, superfield', 'boson, field theory', 'fermion', 'effective Lagrangian'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407164'] | ['We show that the continuum limit of one-dimensional N=2 supersymmetric matrix models can be described by a two-dimensional interacting field theory of a massless boson and two chiral fermions. We interpret this field theory as a two-dimensional N=1 supersymmetric theory of two chiral superfields, in which one of the ... | ['1994-07-26'] |
16,764 | ['eng'] | ['Sabra, W A', 'Soloviev, O A', 'Thomas, S'] | ['Towards c=0 flows'] | ['Particle Physics - Theory'] | ['field theory, conformal', 'field theory, perturbation', 'renormalization group', 'quantum gravity', 'algebra, SL(2,R)', 'symmetry, dilation', 'string model', 'Wess-Zumino-Witten model'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407163'] | ['We discuss some implications of the gravitational dressing of the renormalization group for conformal field theories perturbed by relevant operators. The renormalization group flows are defined with respect to the dilatation operator associated with the J_0^{(0)} mode of the SL(2,R) affine algebra. We discuss the pos... | ['1994-07-26'] |
16,765 | ['eng'] | ['Shiekh, A Y'] | ['The perturbative quantization of gravity'] | ['Particle Physics - Theory'] | ['talk, Protvino', 'quantum gravity', 'perturbation theory, higher-order', 'field theory, scalar', 'renormalization', 'quantization'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407159'] | ['A suggestion is made for quantizing gravity perturbatively, and is illustrated for the example of a massive scalar field with gravity.'] | ['1994-07-26'] |
16,766 | ['eng'] | ['Isidro, J M', 'Ramallo, A V'] | ['Superconformal current algebras and topological field theories'] | ['General Theoretical Physics'] | ['field theory, conformal', 'dimension, 2', 'field theory, topological', 'supersymmetry', 'current algebra', 'operator product expansion', 'cohomology, Becchi-Rouet-Stora'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407152'] | ['Topological conformal field theories based on superconformal current algebras are constructed. The models thus obtained are the supersymmetric version of the G/G coset theories. Their topological conformal algebra is generated by operators of dimensions 1, 2 and 3 and can be regarded as an extension of the twisted N=... | ['1994-07-26'] |
16,767 | ['eng'] | ['Bilal, Adel', 'Kogan, I I'] | ['Gravitationally dressed conformal field theory and emergence of logarithmic operators'] | ['Particle Physics - Theory'] | ['field theory, conformal', 'dimension, 2', 'correlation function', 'gravitation, induced', 'light cone gauge', 'fermion, n-point function', 'analytic properties', 'operator product expansion', 'integrability'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407151'] | ['We study correlation functions in two-dimensional conformal field theory coupled to induced gravity in the light-cone gauge. Focussing on the fermion four-point function, we display an unexpected non-perturbative singularity structure: coupling to gravity {\\it qualitatively} changes the perturbative (x_1-x_2)^{-1}(x... | ['1994-07-26'] |
16,768 | ['eng'] | ['Corrigan, E', 'Dorey, P E', 'Rietdijk, R H'] | ['Aspects of affine Toda field theory on a half line'] | ['Particle Physics - Theory'] | ['talk, Kyoto 1994/02/14', 'field theory, Toda', 'field theory, affine', 'dimension, 2', 'boundary condition', 'integrability', 'bound state'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407148'] | ["The question of the integrability of real-coupling affine toda field theory on a half line is discussed. It is shown, by examining low-spin conserved charges, that the boundary conditions preserving integrability are strongly constrained. In particular, among the cases treated so far, e_6^{(1)}, d_n^{(1)} and a_n^{(1... | ['1994-07-26'] |
16,769 | ['eng'] | ['Brooks, R', 'Gates, S J'] | ['Extended supersymmetry and super-BF gauge theories'] | ['General Theoretical Physics'] | ['gauge field theory, tensor', 'dimension, 3', 'supersymmetry, superspace', 'path integral, measure', 'field theory, action'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407147'] | ['The absence of fermion kinetic terms in supersymmetric-BF gauge theories is established. We do this by means of explicit off-shell (superspace) constructions. As part of our study we give the superspace constraints for D=3, N=4 super Yang-Mills along with the D=3, N=4 superconformal algebra. The puzzle we are interes... | ['1994-07-26'] |
16,770 | ['eng'] | ['Brzezinski, T'] | ['Translation map in quantum principal bundles'] | ['Particle Physics - Theory'] | ['fibre bundle', 'geometry, noncommutative', 'algebra, Hopf', 'transformation, gauge', 'quantum group'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407145'] | ['ABSTRACT The notion of a translation map in a quantum principal bundle is introduced. A translation map is then used to prove that the cross sections of a quantum fibre bundle E(B,V,A) associated to a quantum principal bundle P(B,A) are in bijective correspondence with equivariant maps V\\to P, and that a quantum pri... | ['1994-07-26'] |
16,771 | ['eng'] | ["Figueroa-O'Farrill, J M"] | ['Obstructions to gauging WZ terms'] | ['Particle Physics - Theory'] | ['talk', 'field theory, conformal', 'dimension, 2', 'Wess-Zumino-Witten model', 'gauge field theory', 'differential forms', 'algebra, Lie', 'cohomology'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407153'] | ['This is an expository talk about the relation between gauging the WZ term of a one-dimensional sigma-model with a symplectic target and the existence of an equivariant moment mapping for symplectic group actions. The punch line is that the obstructions for gauging coincide with the obstructions for the existence of t... | ['1994-07-26'] |
16,772 | ['eng'] | ['Dusini, S', 'Zerbini, S'] | ['On the high-temperature behaviour of the closed superstring'] | ['Particle Physics - Theory'] | ['string model', 'supersymmetry', 'high temperature expansion', 'temperature, Hagedorn', 'energy, asymptotic behavior'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407144'] | ['Abstract: The high-temperature expansion for closed superstring one-loop free energy is studied. The Laurent series representation is obtained and its sum is analytically continued in order to investigate the nature of the critical (Hagedorn) temperature. It is found that beyond this critical temperature the statisti... | ['1994-07-26'] |
16,773 | ['eng'] | ['Nelson, W'] | ['A comment on black hole entropy in string theory'] | ['General Theoretical Physics'] | ['string model', 'black hole', 'entropy', 'charge, conservation law'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9406011'] | ['In this note, we extend the string theoretic calculation of the black hole entropy, first performed by Susskind and Uglum, away from the infinite mass limit. It is shown that the result agrees with that obtained from the classical action of string theory, using the Noether charge method developed by Wald. Also shown ... | ['1994-06-06'] |
16,774 | ['eng'] | ['Duncan, A', 'Pernice, S'] | ['Nonperturbative renormalon structure of infrared unstable theories'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'fermion, massless', 'massless, fermion', 'perturbation theory, higher-order', 'renormalization', 'asymptotic expansion', 'model, spin', 'spin, model', 'sigma model, nonlinear', 'infrared problem', 'expansion 1/N'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9602091'] | ['The properties of a generalized version of the Borel Transform in infrared unstable theories with dynamical mass generation are studied. The reconstruction of the nonperturbative structure is unambiguous in this version. Various methods for extracting the singularity structure of the Borel Transform for lattice formu... | ['1996-02-19'] |
16,775 | ['eng'] | ['Pawlowski, M', 'Raczka, R'] | ['A unified conformal model for fundamental interactions without dynamical Higgs field'] | ['Particle Physics - Theory'] | ['unified field theory', 'gauge field theory, SU(3) x SU(2) x U(1)', 'gauge field theory, conformal', 'gravitation', 'electroweak interaction', 'Higgs particle, mass', 'mass, Higgs particle'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407137'] | ['A Higgsless model for strong, electro-weak and gravitational interactions is proposed. This model is based on the local symmetry group SU(3)xSU(2)xU(1)xC where C is the local conformal symmetry group. The natural minimal conformally invariant form of total lagrangian is postulated. It contains all Standard Model fiel... | ['1994-07-26'] |
16,776 | ['eng'] | ['Grundberg, J', 'Hansson, T H'] | ['The QCD Trace Anomaly as a Vacuum Effect (The vacuum is a medium is the message!)'] | ['Particle Physics - Theory'] | ['quantum electrodynamics', 'quantum chromodynamics', 'anomaly, conformal', 'charge, screening', 'renormalization', 'vacuum state, energy'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407139'] | ['We use arguments taken from the electrodynamics of media to deduce the QCD trace anomaly from the expression for the vacuum energy in the presence of an external color magnetic field.'] | ['1994-07-26'] |
16,777 | ['eng'] | ['Torre, C G'] | ['Natural symmetries of the yang-mills equations'] | ['Particle Physics - Theory'] | ['field equations, Yang-Mills', 'field equations, solution', 'symmetry, transformation', 'spinor', 'transformation, gauge'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407129'] | ["We define a natural generalized symmetry of the Yang-Mills equations as an infinitesimal transformation of the Yang-Mills field, built in a local, gauge invariant, and Poincar\\'e invariant fashion from the Yang-Mills field strength and its derivatives to any order, which maps solutions of the field equations to othe... | ['1994-07-26'] |
16,778 | ['eng'] | ['Abdalla, Elcio', 'Abdalla, Maria Christina B'] | ['Integrability and duality in two-dimensional QCD'] | ['Particle Physics - Theory'] | ['gauge field theory, SU(N)', 'quantum chromodynamics', 'fermion, determinant', 'dimension, 2', 'path integral', 'invariance, Becchi-Rouet-Stora', 'ghost', 'bosonization', 'Wess-Zumino-Witten model', 'duality', 'perturbation theory', 'integrability', 'quantization', 'Hamiltonian formalism', 'conservation law'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=TH-7354-94', 'http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407128'] | ['We consider bosonized $QCD_2$, and prove that after rewritting the theory in terms of gauge invariant fields, there exists an integrability condition valid for the quantum theory as well. Furthermore, performing a duality type transformation we obtain an appropriate action for the description of the strong coupling l... | ['1994-07-26'] |
16,779 | ['eng'] | ['Eliashvili, M'] | ['On the composite fermion approach in the FQHE'] | ['Other Fields of Physics'] | ['Hall effect, fractional', 'fermion, model', 'model, composite', 'gauge field theory, U(1)', 'quantization', 'Hamiltonian formalism', 'Schroedinger equation', 'wave function', 'linear spaces, Fock space', 'flux, magnetic', 'magnetic, flux'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407126'] | ['FQHE is presented in the form of non-unitary singular similarity transformation, which relates the Laughlin wave function (and its particle-hole conjugate) to the composite quasi- particle incompressible ground state. (ENSLAPP-A-478/94)'] | ['1994-07-26'] |
16,780 | ['eng'] | ['Bougourzi, A H', 'Vinet, L'] | ['On a bosonic-parafermionic realization of U_q(\\widehat{sl(2)})'] | ['Particle Physics - Theory'] | ['quantum algebra, SL(2)', 'current algebra', 'algebra, representation', 'field theory, conformal', 'dimension, 2', 'operator product expansion'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407132'] | ['We realize the U_q(\\widehat{sl(2)}) current algebra at arbitrary level in terms of one deformed free bosonic field and a pair of deformed parafermionic fields. It is shown that the operator product expansions of these parafermionic fields involve an infinite number of simple poles and simple zeros, which then conden... | ['1994-07-26'] |
16,781 | ['eng'] | ['Bardakci, K'] | ['The conformal points of the generalized thirring model'] | ['Particle Physics - Theory'] | ['Thirring model', 'dimension, 2', 'bosonization', 'Hamiltonian formalism', 'quantization', 'transformation, conformal', 'operator product expansion', 'expansion 1/N'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407131'] | ['The conformal fixed points of the generalized Thirring model are investigated with the help of bosonization, the large N limit and the operator product expansion. Necessary conditions on the coupling constants for conformal invariance are derived.'] | ['1994-07-26'] |
16,782 | ['eng'] | ['Visinescu, M'] | ['Generalized runge-lenz vector in taub-nut spinning space'] | ['Particle Physics - Theory'] | ['Kaluza-Klein model', 'dimension, 5', 'spinor', 'field theory, monopole', 'conservation law'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407130'] | ['The generalized Killing equations and the symmetries of Taub-NUT spinning space are investigated. For spinless particles the Runge-Lenz vector defines a constant of motion directly, whereas for spinning particles it now requires a non-trivial contribution from spin. The generalized Runge-Lenz vector for spinning Taub... | ['1994-07-26'] |
16,783 | ['eng'] | ['Broda, B'] | ['TQFT versus RCFT'] | ['Particle Physics - Theory'] | ['field theory, topological', 'field theory, conformal', 'field theory, rational', 'dimension, 3', 'Chern-Simons term', 'symmetry, SU(2)'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407016'] | ['ABSTRACT A straightforward relationship between the two approaches to 3-dimensional topological invariants, one of them put forward by Witten in the framework of topological quantum field theory, and the second one proposed by Kohno in terms of rational conformal field theory, is established.'] | ['1994-07-05'] |
16,784 | ['eng'] | ['Dubrovin, B'] | ['Geometry of 2D topological field theories'] | ['Particle Physics - Theory'] | ['lectures, Trieste 1995/03/13', 'field theory, topological', 'dimension, 2', 'moduli space', 'differential equations, nonlinear', 'Baecklund transformation', 'differential geometry', 'geometry, algebra', 'bibliography', 'field theory, conformal', 'braid group', 'group theory, monodromy', 'integrability, hierarchy'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407018'] | ["These lecture notes are devoted to the theory of equations of associativity describing geometry of moduli spaces of 2D topological field theories. Introduction. Lecture 1. WDVV equations and Frobenius manifolds. {Appendix A.} Polynomial solutions of WDVV. {Appendix B.} Symmetriies of WDVV. Twisted Frobenius manifolds... | ['1994-07-05'] |
16,785 | ['eng'] | ['Odintsov, S D', 'Romeo, A', 'Tucker, R W'] | ['Dynamical generation of spacetime signature by massive quantum fields on a topologically non-trivial background'] | ['Particle Physics - Theory'] | ['field theory, massive', 'massive, field theory', 'space-time', 'topology, effect', 'spontaneous compactification', 'path integral', 'effective potential', 'regularization, heat kernel'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9406145'] | ['The effective potential for a dynamical Wick field (dynamical signature) induced by the quantum effects of massive fields on a topologically non-trivial D dimensional background is considered. It is shown that when the radius of the compactified dimension is very small compared with \\Lambda^{1/2} (where \\Lambda is ... | ['1994-06-23'] |
16,786 | ['eng'] | ['Gibbons, G W', 'Kallosh, R E'] | ['Topology, the gauss-bonnet theorem and the entropy of dilaton black holes'] | ['Particle Physics - Theory'] | ['black hole, dilaton', 'boundary condition', 'topology', 'entropy', 'index theorem', 'moduli space', 'quantum mechanics, supersymmetry', 'black hole, fission', 'Gauss-Bonnet term', 'postulated particle, axion', 'sigma model', 'supergravity'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407118'] | ['This paper contains a detailed, pedagogic discussion of the topology of extreme static Euclidean axion-dilaton black holes and the Gauss-Bonnet theorem. In the non-extreme case we find, as expected, that the topology is R^2 \\times S^2 and the Euler number \\chi=2. We also discuss the topology of extreme black holes ... | ['1994-07-20'] |
16,787 | ['eng'] | ['Rodgers, V G J'] | ['A 2D inspired 4D theory of gravity'] | ['Particle Physics - Theory'] | ['quantum gravity', 'dimension, 4', 'dimension, 2', 'Gauss law, constraint', 'gauge field theory, Yang-Mills', 'background field', 'diffeomorphism', 'tensor, energy-momentum', 'algebra, orbit'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407119'] | ["Coadjoint orbits of the Virasoro and Kac-Moody algebras provide geometric actions for matter coupled to gravity and gauge fields in two dimensions. However, the Gauss' law constraints that arise from these actions are not necessarily endemic to two-dimensional topologies. Indeed the constraints associated with Yang-M... | ['1994-07-20'] |
16,788 | ['eng'] | ['Shifman, Mikhail A', 'Smilga, A V'] | ['Fractons in twisted multiflavor Schwinger model'] | ['General Theoretical Physics'] | ['Schwinger model', 'fermion, flavor', 'dimension, 2', 'space-time, S(1)', 'path integral, Euclidean', 'Hamiltonian formalism', 'charge, topological', 'charge, fractional', 'boundary condition'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407007'] | ['ABSTRACT We consider two-dimensional QED with several fermion flavors on a finite spatial circle. A modified version of the model with {\\em flavor-dependent} boundary conditions \\psi_p(L) = e^{2\\pi ip/ N} \\psi_p(0), p = 1, \\ldots , N is discussed (N is the number of flavors). In this case a non-contactable conto... | ['1994-07-04'] |
16,789 | ['eng'] | ['Barducci, A', 'Casalbuoni, Roberto', 'Gatto, R', 'Modugno, M', 'Pettini, G'] | ['Thermodynamics of the massive Gross-Neveu model'] | ['Particle Physics - Theory'] | ['Gross-Neveu model', 'dimension, 2', 'finite temperature', 'potential, chemical', 'critical phenomena', 'effective potential', 'renormalization group', 'thermodynamics', 'numerical calculations', 'expansion 1/N'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9406117'] | ['We study the thermodynamics of massive Gross-Neveu models with explicitly broken discrete or continuous chiral symmetries for finite temperature and fermion densities. The large N limit is discussed bearing attention to the no-go theorems for symmetry breaking in two dimensions which apply to the massless cases. The ... | ['1994-06-24'] |
16,790 | ['eng'] | ['Destri, C', 'De Vega, H J'] | ['Unified approach to thermodynamic Bethe ansatz and finite size corrections for lattice models and field theories'] | ['Particle Physics - Theory'] | ['thermodynamics, Bethe ansatz', 'magnetic field, external field', 'correction, finite size', 'lattice field theory', 'integral equations, nonlinear', 'model, vertex', 'boundary condition', 'finite temperature', 'invariance, conformal', 'Thirring model, massive', 'massive, Thirring model', 'sine-Gordon equation', 'scal... | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407117'] | ['We present a unified approach to the Thermodynamic Bethe Ansatz (TBA) for magnetic chains and field theories that includes the finite size (and zero temperature) calculations for lattice BA models. In all cases, the free energy follows by quadratures from the solution of a {\\bf single} non-linear integral equation (... | ['1994-07-20'] |
16,791 | ['eng'] | ['Del Olmo, M A', 'Rodríguez, M A', 'Winternitz, Pavel'] | ['The conformal group SU(2,2) and integrable systems on a lorentzian hyperboloid'] | ['Particle Physics - Theory'] | ['integrability', 'Hamiltonian formalism', 'group theory, SU(2,2)', 'group theory, conformal', 'algebra, Lie', 'space, O(2,2)', 'coset space, SU(2,2)/U(2,1)'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407080'] | ['Eleven different types of ``maximally superintegrable" Hamiltonian systems on the real hyperboloid (s^0)^2-(s^1)^2+(s^2)^2-(s^3)^2=1 are obtained. All of them correspond to a free Hamiltonian system on the homogeneous space SU(2,2)/U(2,1), but to reductions by different maximal abelian subgroups of SU(2,2). Each of t... | ['1994-07-15'] |
16,792 | ['eng'] | ['Gauntlett, J P', 'Harvey, J A'] | ['S-Duality and the spectrum of magnetic monopoles in heterotic string theory'] | ['Particle Physics - Theory'] | ['string model, heterotic', 'spontaneous compactification, torus', 'field theory, monopole', 'mass spectrum', 'duality', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407111'] | ['We discuss the predictions of S-duality for the monopole spectrum of four-dimensional heterotic string theory resulting from toroidal compactification. We discuss in detail the spectrum of ``H-monopoles", states that are magnetically charged with respect to the U(1) groups arising from the dimensional reduction of th... | ['1994-07-19'] |
16,793 | ['eng'] | ['Chu, M', 'Goddard, P'] | ['Quantisation of the SU(N) WZW model at level k'] | ['Particle Physics - Theory'] | ['Wess-Zumino-Witten model', 'dimension, 2', 'symmetry, SU(N)', 'quantization', 'operator, vertex', 'algebra, exchange', 'exchange, algebra', 'braid group', 'n-point function, 4', 'Knizhnik-Zamolodchikov equation'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407108'] | ['The quantisation of the Wess-Zumino-Witten model on a circle is discussed in the case of SU(N) at level k. The quantum commutation of the chiral vertex operators is described by an exchange relation with a braiding matrix, Q. Using quantum consistency conditions, the braiding matrix is found explicitly in the fundame... | ['1994-07-19'] |
16,794 | ['eng'] | ['Intriligator, K'] | ['"Integrating in" and exact superpotentials in 4d'] | ['General Theoretical Physics'] | ['gauge field theory, Yang-Mills', 'supersymmetry, potential', 'effective action', 'operator, determinant', 'nonperturbative'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407106'] | ['We discuss integrating out matter fields and integrating in matter fields in four dimensional supersymmetric gauge theories. Highly nontrivial exact superpotentials can be easily obtained by starting from a known theory and integrating in matter.'] | ['1994-07-19'] |
16,795 | ['eng'] | ['Brandhuber, A', 'Moritsch, O', 'De Oliveira, M W', 'Piguet, O', 'Schweda, Manfred'] | ['A renormalized supersymmetry in the topological Yang-Mills field theory'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'supersymmetry, transformation', 'field theory, topological', 'transformation, Becchi-Rouet-Stora', 'cohomology', 'anomaly', 'renormalization'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407105'] | ["We reconsider the algebraic BRS renormalization of Witten's topological Yang-Mills field theory by making use of a vector supersymmetry Ward identity which improves the finiteness properties of the model. The vector supersymmetric structure is a common feature of several topological theories. The most general local c... | ['1994-07-19'] |
16,796 | ['eng'] | ['Johansen, A'] | ['Infinite conformal algebras in supersymmetric theories on four manifolds'] | ['General Theoretical Physics'] | ['gauge field theory, Yang-Mills', 'supersymmetry', 'supergravity', 'Riemann surfaces', 'algebra, conformal', 'cohomology, Becchi-Rouet-Stora', 'algebra, W(infinity)', 'central charge', 'correlation function', 'operator product expansion', 'effect, instanton', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407109'] | ['We study a supersymmetric theory twisted on a K\\"ahler four manifold M=\\Sigma_1 \\times \\Sigma_2 , where \\Sigma_{1,2} are 2D Riemann surfaces. We demonstrate that it possesses a "left-moving" conformal stress tensor on \\Sigma_1 (\\Sigma_2) in a BRST cohomology, which generates the Virasoro algebra with the conve... | ['1994-07-19'] |
16,797 | ['eng'] | ['Mikovic, A'] | ['Hawking radiation and back-reaction in a unitary theory of 2D quantum gravity'] | ['Particle Physics - Theory'] | ['quantum gravity, dilaton', 'dimension, 2', 'unitarity', 'quantum mechanics, correction', 'effect, back reaction', 'radiation, Hawking', 'black hole, mass', 'mass, black hole'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407104'] | ['We investigate the semiclassical limit and quantum corrections to the metric in a unitary quantum gravity formulation of the CGHS 2d dilaton gravity model. A new method for calculating the back-reaction effects has been introduced, as an expansion of the effective metric in powers of the matter energy-momentum tensor... | ['1994-07-19'] |
16,798 | ['eng'] | ['Alvarez, M', 'Labastida, J M F'] | ['Numerical knot invariants of finite type from Chern-Simons perturbation theory'] | ['General Theoretical Physics'] | ['gauge field theory, Yang-Mills', 'Chern-Simons term', 'dimension, 3', 'Wilson loop', 'perturbation theory', 'knot theory', 'numerical calculations'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407076'] | ['Chern-Simons gauge theory for compact semisimple groups is analyzed from a perturbation theory point of view. The general form of the perturbative series expansion of a Wilson line is presented in terms of the Casimir operators of the gauge group. From this expansion new numerical knot invariants are obtained. These ... | ['1994-07-15'] |
16,799 | ['eng'] | ['Böckenhauer, R K'] | ['Localized endomorphisms of the chiral Ising model'] | ['General Theoretical Physics'] | ['Ising model, chiral', 'operator, algebra', 'algebra, fusion', 'duality', 'phase space', 'mathematical methods'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9407079'] | ['In the frame of the treatment of the chiral Ising model by Mack and Schomerus, examples of localized endomorphisms \\varrho_1^{loc} and \\varrho_{1/2}^{loc} are presented. It is shown that they lead to the same superselection sectors as the global ones in the sense that \\pi_0\\circ\\varrho_1^{l oc}\\cong\\pi_1 and \... | ['1994-07-15'] |
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