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 |
|---|---|---|---|---|---|---|---|---|
4,400 | ['eng'] | ['Blumenhagen, R', 'Görlich, L', 'Körs, B'] | ['Supersymmetric 4D Orientifolds of Type IIA with D6-branes at Angles'] | ['Particle Physics - Theory'] | ['string model', 'string, open', 'string, closed', 'orbifold', 'orientifold', 'symmetry, Z(N)', 'membrane model', 'particle, multiplet', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912204'] | ["We study a certain class of four-dimensional N=1 supersymmetric orientifolds for which the world-sheet parity transformation is combined with a complex conjugation in the compact directions. We investigate in detail the orientifolds of the Z_3, Z_4, Z_6 and Z_6' toroidal orbifolds finding solutions to the tadpole can... | ['1999-12-22'] |
4,401 | ['eng'] | ['Lusanna, L'] | ["The Rest-Frame Instant Form of Dynamics and Dirac's Observables"] | ['Particle Physics - Theory'] | ['talk, Dubna 1999/09/21', 'relativity theory, general', 'gauge field theory, Yang-Mills', 'Higgs model', 'Hamiltonian formalism', 'constraint', 'unified field theory', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912203'] | ['Talk given at the International Workshop ``Physical Variables in Gauge Theories", Dubna 1999'] | ['1999-12-22'] |
4,402 | ['eng'] | ['Bandelloni, G', 'Lazzarini, S'] | ['W-algebras from symplectomorphisms'] | ['Particle Physics - Theory'] | ['algebra, W(N)', 'differential geometry, symplectic', 'differential forms', 'transformation, Becchi-Rouet-Stora', 'gravitation, W(3)'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912202'] | ['It is shown how $W$-algebras emerge from very peculiar canonical transformations with respect to the canonical symplectic structure on a compact Riemann surface. The action of smooth diffeomorphisms of the cotangent bundle on suitable generating functions is written in the BRS framework while a $W$-symmetry is exhibi... | ['1999-12-22'] |
4,403 | ['eng'] | ['Castro-Alvaredo, O A', 'Fring, A', 'Korff, C', 'Miramontes, J L'] | ['Thermodynamic Bethe Ansatz of the Homogeneous Sine-Gordon models'] | ['Particle Physics - Theory'] | ['sine-Gordon model', 'dimension, 2', 'S-matrix', 'Bethe ansatz', 'scattering amplitude, high energy behavior', 'parity, violation', 'central charge', 'symmetry, SU(3)', 'scaling', 'approximation, quasiclassical', 'numerical calculations', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912196'] | ['We apply the thermodynamic Bethe Ansatz to investigate the high energy behaviour of a class of scattering matrices which have recently been proposed to describe the Homogeneous sine-Gordon models related to simply laced Lie algebras. A characteristic feature is that some elements of the suggested S-matrices are not p... | ['1999-12-22'] |
4,404 | ['eng'] | ['Dunne, G', 'Feinberg, J'] | ['Finite Temperature Effective Action in Monopole Background'] | ['Particle Physics - Theory'] | ['fermion, Dirac', 'gauge field theory, U(1)', 'Chern-Simons term, induced', 'dimension, 3', 'finite temperature', 'effective action', 'magnetic monopole', 'analytic properties'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912195'] | ['We compute the CP-odd part of the finite temperature effective action for massive Dirac fermions in the presence of a Dirac monopole. We confirm that the induced charge is temperature dependent, and in the effective action we find an infinite series of CP-violating terms that generalize the familiar zero temperature ... | ['1999-12-22'] |
4,405 | ['eng'] | ['Dzhunushaliev, V D', 'Singleton, D'] | ['Quantization of classical singular solutions in Yang-Mills theory'] | ['Particle Physics - Theory'] | ['gauge field theory, SU(2)', 'gauge field theory, SU(3)', 'field equations, solution', 'boundary condition', 'approximation, strong coupling', 'quantization'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912194'] | ["In this paper we apply a variant of Heisenberg's quantization method for strongly interacting, non-linear fields, to solutions of the classical Yang-Mills field equations which have bad asymptotic behavior. After quantization we find that the bad features (i.e. divergent fields and energy densities) of these solution... | ['1999-12-22'] |
4,406 | ['eng'] | ['Chaichian, Masud', 'Kobakhidze, A B'] | ['Large hierarchy from extra dimensions'] | ['Particle Physics - Theory'] | ['field theory, scalar', 'fermion', 'coupling, Yukawa', 'higher-dimensional', 'spontaneous compactification', 'hierarchy, gauge', 'Higgs particle, mass', 'radiative correction', 'anomaly, conformal', 'renormalization group'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912193'] | ['We argue that the familiar gauge hierarchy between the fundamental Planck scale $M_{Pl}$ and the electroweak scale $M_{W}$, can be naturally explained in higher dimensional theories with relatively large radii ($R_c > 1/M_{Pl}$) extra dimensions. In particular, we show that it is possible that the electroweak Higgs m... | ['1999-12-22'] |
4,407 | ['eng'] | ['Chen, C M', 'Harko, T', 'Mak, M K'] | ['Bianchi Type I Cosmology in N=2, D=5 Supergravity'] | ['Particle Physics - Theory'] | ['supergravity', 'dimension, 5', 'astrophysics, model', 'geometry', 'field equations, solution', 'dimensional reduction', 'space-time, Bianchi', 'dimension, 4'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912192'] | ['The dynamics and evolution of Bianchi type I space-times is considered in the framework of the four-dimensional truncation of a reduced theory obtained from the N=2,D=5 supergravity. The general solution of the gravitational field equations can be represented in an exact parametric form. All solutions have a singular... | ['1999-12-22'] |
4,408 | ['eng'] | ['Nojiri, S', 'Odintsov, S D', 'Ogushi, S'] | ['Conformal Anomaly from d5 Gauged Supergravity and c-function Away from Conformity'] | ['Particle Physics - Theory'] | ['supergravity', 'gauge field theory', 'dimension, 5', 'dimension, 3', 'field theory, anti-de Sitter', 'field theory, conformal', 'anomaly', 'renormalization group, c-function', 'dilaton', 'numerical calculations'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912191'] | ['Using AdS/CFT correspondence we found the conformal anomaly from d3 and d5 gauged supergravity with single scalar (dilaton) and the arbitrary scalar potential on AdS-like scalar-gravitational background. Such dilatonic gravity action describes the special RG flows in extended gauged SG when scalars lie in one-dimensi... | ['1999-12-22'] |
4,409 | ['eng'] | ['Lin, F L', 'Wu, Y S'] | ['The c-Function of Noncommutative Yang-Mills Theory'] | ['Particle Physics - Theory'] | ['supergravity', 'gauge field theory, Yang-Mills', 'dimension, 10', 'dimensional reduction', 'field equations, solution', 'tensor, energy-momentum', 'regularization', 'duality', 'finite temperature', 'renormalization group, c-function', 'holography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912190'] | ['In this paper we obtain the c-function of noncommutative Yang-Mills theory from the boundary counter-terms in its supergravity dual. For all backgrounds we consider, the c-function is found to be monotonically decreasing towards the infrared fixed point, where it recovers the central charge of ordinary Yang-Mills the... | ['1999-12-22'] |
4,410 | ['eng'] | ['Bing, H', 'He, L'] | ['Gauge Symmetry from Integral Viewpoint'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'fibre bundle', 'transformation, gauge', 'loop space', 'spinor', 'Aharonov-Bohm effect'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912189'] | ['The purpose of this paper is to investigate the gauge symmetry of classical field theories in integral formalism. A gauge invariant theory is defined in terms of the invariance of the physical observables under the coordinate transformations in principal bundle space. Through the detailed study on the properties of n... | ['1999-12-22'] |
4,411 | ['eng'] | ['Scheidegger, E'] | ['D-branes on some one- and two-parameter Calabi-Yau hypersurfaces'] | ['Particle Physics - Theory'] | ['membrane model, D-brane', 'field theory, Calabi-Yau', 'geometry, algebra', 'phase space, boundary condition', 'Gepner model', 'field theory, conformal'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912188'] | ['D-branes on one-parameter Calabi-Yau spaces and two-parameter $K3$-fibered Calabi-Yau manifolds are analyzed from both the Gepner model point of view and the geometric perspective. We compute part of the spectrum of the boundary states and comment on the appearance of the $D0$-brane as well as on nonsupersymmetric la... | ['1999-12-22'] |
4,412 | ['eng'] | ['Cvetic, M', 'Wang, J'] | ['Vacuum Domain Walls in D-dimensions'] | ['Particle Physics - Theory'] | ['gravitation', 'any-dimensional', 'Einstein equation, solution', 'domain wall', 'energy, density', 'membrane model', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912187'] | ["We study local and global gravitational effects of (D-2)-brane configurations (domain-walls) in the vacuum of D-dimensional space-time. We focus on infinitely thin vacuum domain walls with arbitrary cosmological constants on either side of the wall. In the comoving frame of the wall we derive a general metric Ansatz,... | ['1999-12-22'] |
4,413 | ['eng'] | ['Chacko, Z', 'Nelson, A E'] | ['A Solution to the Hierarchy Problem with an Infinitely Large Extra Dimension and Moduli Stabilization'] | ['Particle Physics - Theory'] | ['relativity theory, general', 'dimension, >=6', 'spontaneous compactification, hierarchy', 'Einstein equation, solution', 'moduli space', 'stability', 'tensor, energy-momentum', 'numerical calculations'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912186'] | ["We construct a class of solutions to the Einstein's equations for dimensions greater than or equal to six. These solutions are characterized by a non-trivial warp factor and possess a non-compact extra dimension. We study in detail a simple model in six dimensions containing two four branes. One of each brane's four ... | ['1999-12-22'] |
4,414 | ['eng'] | ['Konechny, A', 'Schwarz, A'] | ['Compactification of M(atrix) theory on noncommutative toroidal orbifolds'] | ['Particle Physics - Theory'] | ['M-theory', 'matrix model', 'orbifold', 'field theory, torus', 'moduli space', 'K-theory', 'differential geometry, noncommutative', 'duality, group theory'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912185'] | ['It was shown by A. Connes, M. Douglas and A. Schwarz that noncommutative tori arise naturally in consideration of toroidal compactifications of M(atrix) theory. A similar analysis of toroidal Z_{2} orbifolds leads to the algebra B_{\\theta} that can be defined as a crossed product of noncommutative torus and the grou... | ['1999-12-21'] |
4,415 | ['eng'] | ['Gomberoff, A', 'Marolf, D M'] | ['Brane Transmutation in Supergravity'] | ['Particle Physics - Theory'] | ['supergravity', 'field equations, solution', 'soliton, BPS', 'membrane model, D-brane', 'membrane model, p-brane', 'p-brane, 4', 'p-brane, 6', 'charge, conservation law'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912184'] | ['We study a family of BPS solutions of type IIA supergravity that can be interpreted as describing the `transmutation\' of a Neveu-Schwarz five-brane into a D4-brane in the presence of a D6-brane. The D4-brane, which terminates on the D6-brane, can be equally well interpreted as a `pure multipole\' configuration of NS... | ['1999-12-21'] |
4,416 | ['eng'] | ['Frizzo, A', 'Magnea, L', 'Russo, R'] | ['Scalar field theory limits of bosonic string amplitudes'] | ['Particle Physics - Theory'] | ['string model, boson', 'scattering amplitude, scalar', 'perturbation theory, higher-order', 'string tension, infinite', 'analytic properties', 'moduli space'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912183'] | ['We describe in detail the techniques needed to compute scattering amplitudes for colored scalars from the infinite tension limit of bosonic string theory, up to two loops. These techniques apply both to cubic and quartic interactions, and to planar as well as non-planar diagrams. The resulting field theories are natu... | ['1999-12-21'] |
4,417 | ['eng'] | ['Li, T'] | ['Classification of 5-Dimensional Space-Time with Parallel 3-Branes'] | ['Particle Physics - Theory'] | ['space-time', 'dimension, 5', 'astrophysics, fundamental constant', 'spontaneous compactification, S(1)', 'membrane model, p-brane', 'p-brane, 3', 'membrane model, tension'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912182'] | ['If the fifth dimension is one-dimensional connected manifold, up to diffeomorphic, the only possible space-time will be $M^4 \\times R^1$, $M^4 possibilities on cosmology constant: the cosmology constant is constant along the fifth dimension, and the cosmology constant is sectional constant along the fifth dimension.... | ['1999-12-21'] |
4,418 | ['eng'] | ['Krichever, I M', 'Phong, D H'] | ['Spin Chain Models with Spectral Curves from M theory'] | ['Particle Physics - Theory'] | ['gauge field theory, SU(N)', 'supersymmetry', 'particle, multiplet', 'integrability', 'Hamiltonian formalism', 'model, spin', 'geometry, algebra', 'Seiberg-Witten model', 'differential forms, symplectic', 'operator, Lax', 'M-theory', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912180'] | ['We construct the integrable model corresponding to the $\\N=2$ supersymmetric SU(N) gauge theory with matter in the antisymmetric representation, using the spectral curve found by Landsteiner and Lopez through M Theory. The model turns out to be the Hamiltonian reduction of a $N+2$ periodic spin chain model, which is... | ['1999-12-21'] |
4,419 | ['eng'] | ['Deriglazov, A A', 'Evdokimov, K E'] | ['Local symmetries in the Hamiltonian framework; 1, Hamiltonian form of the symmetries and the Noether identities'] | ['Particle Physics - Theory'] | ['Hamiltonian formalism', 'symmetry, transformation', 'constraint', 'conservation law', 'phase space'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912179'] | ['We study in the Hamiltonian framework the local transformations R_{(k)a}{}^A(q^B, \\dot q^C)$ which leave invariant the Lagrangian action: Noether identities is obtained in the first order formalism as well as in the Hamiltonian one. The identities has very simple form and interpretation in the Hamiltonian framework.... | ['1999-12-21'] |
4,420 | ['eng'] | ['Olivie, D'] | ['Point Splitting and U(1) Gauge Invariance'] | ['Particle Physics - Theory'] | ['talk, Cargese 1999/07/26', 'quantum electrodynamics', 'symmetry, U(1)', 'fermion, Dirac', 'regularization, point splitting', 'invariance, gauge'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912178'] | ["A gauge transformation in quantum electrodynamics involves the product of field operators at the same space-time point and hence does not have a well-defined meaning. One way to avoid this difficulty is to generalize the gauge transformation by using different space-time points in the spirit of Dirac's point splittin... | ['1999-12-21'] |
4,421 | ['eng'] | ['Llatas, P M', 'Ramallo, A V', 'Sánchez de Santos, J M'] | ['World-volume Solitons of the D3-brane in the Background of (p,q) Five-branes'] | ['Particle Physics - Theory'] | ['membrane model, D-brane', 'membrane model, p-brane', 'p-brane, 3', 'p-brane, 5', 'background field', 'differential equations, solution', 'soliton', 'invariance, SO(3)'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912177'] | ['We analyze the world-volume solitons of a D3-brane probe in the background of parallel (p,q) five-branes. The D3-brane is embedded along the directions transverse to the five-branes of the background. By using the S-duality invariance of the D3-brane, we find a first-order differential equation whose solutions satura... | ['1999-12-21'] |
4,422 | ['eng'] | ['Youm, D'] | ['Probing Solitons in Brane Worlds'] | ['Particle Physics - Theory'] | ['supergravity', 'dilaton', 'domain wall', 'soliton', 'membrane model, p-brane'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912175'] | ['We study dynamics of a probe p-brane and a test particle in the field background of fully localized solutions describing the source p-brane within the worldvolume of the source domain wall. We find that the probe dynamics in the background of the source p-brane in one lower dimensions is not reproduced, indicating th... | ['1999-12-21'] |
4,423 | ['eng'] | ['Kreuzer, M', 'Zhou Jian Ge'] | ['$\\Lambda$-symmetry and background independence of noncommutative gauge theory on $R^{n}$'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'symmetry, transformation', 'dependence, background', 'differential geometry, noncommutative'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912174'] | ['Background independence of noncommutative Yang-Mills theory on $R^n$ is discussed. The quantity $\\theta \\hat F \\theta - \\theta$ is found to be background dependent at subleading order, and it becomes background independent only when the ordinary gauge field strength $F$ is constant. It is shown that, at small val... | ['1999-12-21'] |
4,424 | ['eng'] | ['Balog, J', 'Fehér, L', 'Palla, L'] | ['On the Chiral WZNW Phase Space, Exchange r-Matrices and Poisson-Lie Groupoids'] | ['Particle Physics - Theory'] | ['talk, Montreal 1999/07/26', 'Wess-Zumino-Witten model, chiral', 'dimension, 2', 'Hamiltonian formalism', 'phase space', 'R-matrix', 'Yang-Baxter equation'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912173'] | ['This is a review of recent work on the chiral extensions of the WZNW phase space describing both the extensions based on fields with generic monodromy as well as those using Bloch waves with diagonal monodromy. The symplectic form on the extended phase space is inverted in both cases and the chiral WZNW fields are fo... | ['1999-12-21'] |
4,425 | ['eng'] | ['Pak, D G'] | ['Three Dimensional Differential Calculus on the Quantum Group $SU_{q}(2)$ and Minimal Gauge Theory'] | ['Particle Physics - Theory'] | ['talk, Istanbul 1997/09/17', 'quantum group, SU(2)', 'algebra, Lie', 'algebra, deformation', 'differential forms, algebra', 'commutation relations', 'gauge field theory, Yang-Mills'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912172'] | ['Three-dimensional bicovariant differential calculus on the quantum group SU_q(2) is constructed using the approach based on global covariance under the action of the stabilizing subgroup U(1). Explicit representations of possible q-deformed Lie algebras are obtained in terms of differential operators. The consistent ... | ['1999-12-21'] |
4,426 | ['eng'] | ['Varilly, J C'] | ['Noncommutative geometry and quantization'] | ['Particle Physics - Theory'] | ['talk, Sao Paulo 1999/01/31', 'quantization', 'Hamiltonian formalism', 'operator, algebra', 'differential geometry, noncommutative', 'gauge field theory', 'index theorem', 'algebra, Hopf', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912171'] | ['We examine some recent developments in noncommutative geometry, including spin geometries on noncommutative tori and their quantization by the Shale-Stinespring procedure, as well as the emergence of Hopf algebras as a tool linking index theory and renormalization calculations'] | ['1999-12-21'] |
4,427 | ['eng'] | ['Figueroa, H', 'Gracía-Bondía, José M'] | ["On the antipode of Kreimer's Hopf algebra"] | ['Particle Physics - Theory'] | ['algebra, Hopf', 'algebra, representation', 'mathematical methods', 'renormalization'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912170'] | ['We give a new formula for the antipode of the algebra of rooted trees, directly in terms of the bialgebra structure. This provides a short proof of the equivalence of the Bogoliubov-Parasiuk-Hepp and the Zimmermann renormalization procedures.'] | ['1999-12-21'] |
4,428 | ['eng'] | ['Klinkhamer, F R'] | ['A CPT Anomaly'] | ['Particle Physics - Theory'] | ['gauge field theory, SO(10)', 'fermion, chiral', 'field theory, Euclidean', 'path integral', 'effective action', 'violation, CPT', 'anomaly'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912169'] | ['We consider chiral gauge theories defined over a fixed four-dimensional space-time manifold with Cartesian product structure, e.g. the product of Minkowskian 3-space and a circle. For a simple set-up, we calculate the effective gauge field action obtained from integrating out the chiral fermions, while maintaining ga... | ['1999-12-21'] |
4,429 | ['eng'] | ['Ferrara, Sergio', 'Sokatchev, Emery S'] | ['Short representations of SU(2,2/N) and harmonic superspace analyticity'] | ['Particle Physics - Theory'] | ['group theory, SU(2,2/N)', 'group theory, representation', 'supersymmetry', 'superspace, harmonic', 'analytic properties'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912168'] | ["We consider the harmonic superspaces associated to SU(2,2/N) superconformal algebras. For arbitrary N, we show that massless representations, other than the chiral ones, correspond to [N/2] ``elementary'' ultrashort analytic superfields whose first component is a scalar in the k antisymmetric irrep of SU(N) (k=1... [... | ['1999-12-21'] |
4,430 | ['eng'] | ['Hayakawa, M'] | ['Perturbative analysis on infrared and ultraviolet aspects of noncommutative QED on $R^{4}$'] | ['Particle Physics - Theory'] | ['quantum electrodynamics', 'gauge field theory, Yang-Mills', 'differential geometry, noncommutative', 'fermion, Weyl', 'perturbation theory, higher-order', 'infrared problem', 'magnetic moment', 'vacuum polarization', 'gauge field theory, chiral'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912167'] | ['Here we discuss the ultraviolet and infrared aspects of the noncommutative counterpart of QED, which is called as noncommutative QED, as well as some infrared dynamics of noncommutative Yang-Mills (NCYM) theory. First we demonstrate that the divergence in the theory can be subtracted by the similar counterterms as in... | ['1999-12-21'] |
4,431 | ['eng'] | ['Chamblin, A', 'Eardley, D M'] | ['Puncture of gravitating domain walls'] | ['Particle Physics - Theory'] | ['space-time', 'topology, defect', 'domain wall', 'instanton', 'scattering amplitude', 'stability, quasiclassical', 'gravitation', 'membrane model'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912166'] | ["We investigate the semi-classical instability of vacuum domain walls to processes where the domain walls decay by the formation of closed string loop boundaries on their worldvolumes. Intuitively, a wall which is initially spherical may `pop', so that a hole corresponding to a string boundary component on the wall, m... | ['1999-12-21'] |
4,432 | ['eng'] | ['Lu, J X', 'Roy, S'] | ['(p + 1)-Dimensional Noncommutative Yang-Mills and D(p - 2) Branes'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'differential geometry, noncommutative', 'membrane model, D-brane', 'membrane model, p-brane', 'gravitation', 'bound state'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912165'] | ['We consider systems of non-threshold bound states (D(p-2), Dp), for $2\\le p with a nonzero (rank two) Neveu-Schwarz B field. We study the noncommutative effects in the gravity dual descriptions of noncommutative gauge theories for these systems in the limit where the brane worldvolume theories decouple from gravity.... | ['1999-12-20'] |
4,433 | ['eng'] | ['Duff, Michael J'] | ['Branes, Black Holes and Anti-de Sitter Space'] | ['Particle Physics - Theory'] | ['lectures, Boulder 1999/05/30', 'lectures, Banff 1999/06/27', 'membrane model', 'space-time, anti-de Sitter', 'field theory, conformal', 'duality', 'membrane model, D-brane', 'D-brane, 3', 'D-brane, 5', 'supersymmetry', 'supergravity', 'dimension, 11', 'spontaneous compactification', 'gauge field theory', 'Kaluza-Klei... | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912164'] | ["In the light of the duality between physics in the bulk of anti-de Sitter space and a conformal field theory on the boundary, we review the M2, D3 and M5 branes and how their near-horizon geometry yields the compactification of D=11 supergravity on S^{7}, Type IIB supergravity on S^{5} and D=11 supergravity on S^{4},... | ['1999-12-20'] |
4,434 | ['eng'] | ['Hoppe, J'] | ['Asymptotic Zero Energy States for $SU(N\\geq{3})$'] | ['Particle Physics - Theory'] | ['matrix model', 'symmetry, SU(N)', 'supersymmetry', 'phase space', 'wave function, harmonic'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912163'] | ['Some ideas are presented concerning the question which of the harmonic wavefunctions constructed in [hep-th/9909191] may be annihilated by all supercharges.'] | ['1999-12-20'] |
4,435 | ['eng'] | ['Shifman, M', 'Veldhuis, T A'] | ['Calculating the tension of domain wall junctions and vortices in generalized Wess-Zumino models'] | ['Particle Physics - Theory'] | ['Wess-Zumino model', 'soliton, BPS', 'symmetry, axial', 'domain wall', 'vortex', 'tension', 'symmetry, Z(N)', 'stability'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912162'] | ["We study BPS saturated objects with axial geometry (wall junctions, vortices) in generalized Wess-Zumino models. It is observed that the tension of such objects is negative in general (although ``exceptional'' models are possible). We show how an ambiguity in the definition of central charges does not affect physical... | ['1999-12-20'] |
4,436 | ['eng'] | ['Vecchia, P D', 'Liccardo, A'] | ['D branes in string theory, 1'] | ['Particle Physics - Theory'] | ['lectures, Akureyri 1999/08/10', 'string model', 'perturbation theory, higher-order', 'boundary condition', 'membrane model, D-brane', 'membrane model, p-brane', 'field theory, conformal', 'quantization', 'operator product expansion', 'analytic properties'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912161'] | ['In these lectures we present a detailed description of the origin and of the construction of the boundary state that is now widely used for studying the properties of D branes. (Lectures given at NATO-ASI on "Quantum Geometry" in Akureyri, Iceland, August 1999).'] | ['1999-12-20'] |
4,437 | ['eng'] | ['Charmousis, C', 'Gregory, R', 'Rubakov, V A'] | ['Wave function of the radion in a brane world'] | ['Particle Physics - Theory'] | ['membrane model', 'Randall-Sundrum model', 'dimension, 5', 'field theory, scalar', 'massless', 'space-time, fluctuation', 'radion, coupling', 'wave function'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912160'] | ["We calculate the linearized metric perturbation corresponding to a massless four-dimensional scalar field, the radion, in a five-dimensional two-brane model of Randall and Sundrum. In this way we obtain relative strengths of the radion couplings to matter residing on each of the branes. The results are in agreement w... | ['1999-12-20'] |
4,438 | ['eng'] | ['Llatas, P M', 'Sánchez de Santos, J M'] | ['S-Duality, SL(2,Z) Multiplets and Killing Spinors'] | ['Particle Physics - Theory'] | ['string model', 'supersymmetry', 'supergravity', 'duality', 'multiplet, SL(2,Z)'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912159'] | ['The S-duality transformations in type IIB string theory can be seen as local U(1) transformations in type IIB supergravity. We use this approach to construct the $SL(2,Z)$ multiplets associated to supersymmetric backgrounds of type IIB string theory and the transformation laws of their corresponding Killing spinors.'... | ['1999-12-20'] |
4,439 | ['eng'] | ['Marotta, R', 'Pezzella, F'] | ['Two-Loop $\\phi^{4}$-Diagrams from String Theory'] | ['Particle Physics - Theory'] | ['string model, boson', 'string, open', 'phi**n model, 4', 'symmetry, SU(N)', 'scattering amplitude, higher-order', 'higher-order, 2', 'expansion 1/N'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912158'] | ['Using the {\\em cutting and sewing} procedure we show how to get Feynman diagrams, up to two-loop order, of $\\Phi^{4}$-theory with an internal SU(N) symmetry group, starting from tachyon amplitudes of the open bosonic string theory. In a properly defined field theory limit, we easily identify the corners of the stri... | ['1999-12-20'] |
4,440 | ['eng'] | ['Takayanagi, T'] | ['String Creation and Monodromy from Fractional D-branes on ALE spaces'] | ['Particle Physics - Theory'] | ['membrane model, D-brane', 'membrane model, fractional', 'phase space, boundary condition', 'string, production', 'orbifold, singularity', 'Witten index', 'anomaly', 'renormalization group, beta function', 'perturbation theory, higher-order', 'gauge field theory, quiver', 'monodromy', 'field theory, conformal'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912157'] | ['We investigate the anomalous creation of fundamental strings using the boundary state formalism of fractional D-branes on ALE spaces in the orbifold limit. The open string Witten index plays a crucial role in this calculation and so the result remains unchanged even if we blow up the orbifold geometrically, matching ... | ['1999-12-20'] |
4,441 | ['eng'] | ['Schmidhuber, C'] | ['$AdS_{5}$ and the 4D Cosmological Constant'] | ['Particle Physics - Theory'] | ['space-time, anti-de Sitter', 'boundary condition', 'holography', 'astrophysics, fundamental constant', 'symmetry breaking, conformal', 'dimension, 5', 'dimension, 4'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912156'] | ['The hypothesis is discussed that our universe is really 5-dimensional with a large cosmological constant, while the observable flat 4-dimensional universe is only the holographic projection of the 5-dimensional universe onto its own boundary.'] | ['1999-12-20'] |
4,442 | ['eng'] | ['Schmidhuber, C'] | ['AdS-Flows and Weyl Gravity'] | ['Particle Physics - Theory'] | ['string model', 'space-time, anti-de Sitter', 'dimension, 10', 'gauge field theory, Yang-Mills', 'sigma model, nonlinear', 'field theory, conformal', 'duality', 'supergravity, Weyl'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912155'] | ['An analogy is noted between RG flow equations in 4-dimensional gauge theory, as derived from the AdS/CFT correspondence, and the RG flow equations in 4-dimensional field theory coupled to a particular limit of Weyl supergravity. This suggests a possible theory of dynamical 3-branes with fluctuating 4-dimensional conf... | ['1999-12-20'] |
4,443 | ['eng'] | ['Chu, C S', 'Zamora, Frederic'] | ['Manifest Supersymmetry in Non-Commutative Geometry'] | ['Particle Physics - Theory'] | ['string model', 'supersymmetry, superfield', 'string, open', 'differential geometry, noncommutative', 'boundary condition', 'light cone gauge', 'quantization', 'Hamiltonian formalism', 'membrane model, D-brane'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912153'] | ['We consider the open superstring ending on a D-brane in the presence of a constant NS-NS B field, using the Green-Schwarz formalism. Quantizing in the light-cone gauge, we find that the anti-commutation relations for the fermionic variables of superspace remain unmodified. We also derive the unbroken supersymmetry al... | ['1999-12-17'] |
4,444 | ['eng'] | ['Taylor, T R', 'Vafa, C'] | ['RR Flux on Calabi-Yau and Partial Supersymmetry Breaking'] | ['Particle Physics - Theory'] | ['string model', 'supersymmetry, symmetry breaking', 'spontaneous compactification', 'mass generation', 'field theory, Calabi-Yau', 'field strength, flux', 'geometry'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912152'] | ['We show how turning on Flux for RR (and NS-NS) field strengths on non-compact Calabi-Yau 3-folds can serve as a way to partially break supersymmetry from N=2 to N=1 by mass deformation. The freezing of the moduli of Calabi-Yau in the presence of the flux is the familiar phenomenon of freezing of fields in supersymmet... | ['1999-12-17'] |
4,445 | ['eng'] | ['Kachru, S', 'Katz, S', 'Lawrence, A', 'McGreevy, J'] | ['Open string instantons and superpotentials'] | ['Particle Physics - Theory'] | ['string model', 'supersymmetry, potential', 'string, open', 'spontaneous compactification', 'field theory, Calabi-Yau', 'instanton', 'moduli space', 'membrane model, D-brane', 'geometry', 'symmetry, mirror'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912151'] | ['We study the F-terms in N=1 supersymmetric, d=4 gauge theories arising from D(p+3)-branes wrapping supersymmetric p-cycles in a Calabi-Yau threefold. If p is even the spectrum and superpotential for a single brane are determined by purely classical ($\\alpha^\\prime \\to 0$) considerations. If p=3, superpotentials fo... | ['1999-12-17'] |
4,446 | ['eng'] | ['Bilal, Adel', 'Derendinger, J P', 'Sauser, R'] | ['M-theory on $S^{1}/Z_{2}'] | ['Particle Physics - Theory'] | ['M-theory', 'orbifold, S(1)/Z(2)', 'space-time', 'field theory, topological', 'anomaly', 'dimension, 11'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912150'] | ['We carefully re-examine the issues of solving the modified Bianchi identity, anomaly cancellations and flux quantization in the S^1/Z_2 orbifold of M-theory using the boundary-free upstairs formalism, avoiding several misconceptions present in earlier literature. While the solution for the four-form G to the modified... | ['1999-12-17'] |
4,447 | ['eng'] | ['Monteiro del Cima, O', 'Franco, D H T', 'Helayël-Neto, José A', 'Piguet, O'] | ['Comment on "On spin-1 massive particles coupled to a Chern-Simons field"'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'Chern-Simons term', 'dimension, 3', 'field theory, vector', 'field theory, massive'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912148'] | ['In this comment we discuss some serious inconsistencies presented by Gomes, Malacarne and da Silva in their paper, Phys.Rev. D60 (1999) 125016 (hep-th/9908181).'] | ['1999-12-17'] |
4,448 | ['eng'] | ['Kaste, P', 'Lütken, C A', 'Lerche, Wolfgang', 'Walcher, J'] | ['D-Branes on K3-Fibrations'] | ['Particle Physics - Theory'] | ['membrane model, D-brane', 'field theory, conformal', 'dimension, 2', 'field theory, rational', 'fibre bundle'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912147'] | ['B-type D-branes are constructed on two different K3-fibrations over IP_1 using boundary conformal field theory at the rational Gepner points of these models. The microscopic CFT charges are compared with the Ramond charges of D-branes wrapped on holomorphic cycles of the corresponding Calabi-Yau manifold. We study in... | ['1999-12-17'] |
4,449 | ['eng'] | ['Damgaard, P H', 'Splittorff, K'] | ['Spectral Sum Rules of the Dirac operator and Partially Quenched Chiral Condensates'] | ['Particle Physics - Theory'] | ['gauge field theory, SU(N)', 'fermion, flavor', 'partition function', 'constraint, Virasoro', 'sum rule', 'expansion 1/N', 'mass spectrum', 'fermion, condensation'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912146'] | ["Exploiting Virasoro constraints on the effective finite-volume partition function, we derive generalized Leutwyler-Smilga spectral sum rules of the Dirac operator to high order. By introducing $N_v$ fermion species of equal masses, we next use the Virasoro constraints to compute two (low-mass and large-mass) expansio... | ['1999-12-17'] |
4,450 | ['eng'] | ['Uranga, A M'] | ['Comments on Non-Supersymmetric Orientifolds at Strong Coupling'] | ['Particle Physics - Theory'] | ['membrane model, D-brane', 'membrane model, p-brane', 'orientifold', 'approximation, strong coupling', 'supersymmetry', 'symmetry breaking', 'duality'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912145'] | ['We consider several properties of a set of anti-D$p$-branes in the presence of orientifold p-planes in type II theory. This system breaks all the supersymmetries of the theory, but is free of tachyons. In particular, we center on the case of a single anti-D$p$-brane stuck at a negatively charged orientifold p-plane, ... | ['1999-12-17'] |
4,451 | ['eng'] | ['Kaplunovsky, V S', 'Sonnenschein, J', 'Theisen, Stefan J', 'Yankielowicz, S'] | ['On the Duality between Perturbative Heterotic Orbifolds and M-Theory on $T^{4}/Z_{N}$'] | ['Particle Physics - Theory'] | ['string model, heterotic', 'gauge field theory, E(8) x E(8)', 'spontaneous compactification', 'orbifold, T(4)/Z(N)', 'duality', 'M-theory', 'perturbation theory, higher-order', 'anomaly', 'coupling constant'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912144'] | ["The heterotic $E_8\\times E_8$ string compactified on an orbifold $T^4/\\IZ_N$ has gauge group $G\\times G'$ with (massless) states in its twisted sectors which are charged under both gauge group factors. In the dual M-theory on $(T^4/\\IZ_N)\\otimes(S^1/\\IZ_2)$ the two group factors are separated in the eleventh di... | ['1999-12-17'] |
4,452 | ['eng'] | ['Kogan, I I', 'Tsvelik, A M'] | ['Logarithmic Operators in the Theory of Plateau Transition'] | ['Particle Physics - Theory'] | ['Hall effect', 'Wess-Zumino-Witten model', 'dimension, 2', 'scaling', 'n-point function', 'Knizhnik-Zamolodchikov equation'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912143'] | ['We show that $SL(2;C)/SU(2)$ model which had been recently proposed to describe the behaviour of the local densities of states at the plateau transition in Integer Quantum Hall effect, has logarithmic operators. They unusual properties are studied in this letter.'] | ['1999-12-17'] |
4,453 | ['eng'] | ['Branchina, Vincenzo'] | ['Flow Equations for $U_{k}$ and $Z_{k}$'] | ['Particle Physics - Theory'] | ['field theory, scalar', 'effective action', 'perturbation theory, higher-order', 'path integral, determinant', 'fluctuation', 'renormalization group, transformation'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912141'] | ['By considering the gradient expansion for the wilsonian effective action S_k of a single component scalar field theory truncated to the first two terms, the potential U_k and the kinetic term Z_k, I show that the recent claim that different expansion of the fluctuation determinant give rise to different renormalizati... | ['1999-12-17'] |
4,454 | ['eng'] | ['Arcioni, G', 'Vázquez-Mozo, Miguel A'] | ['Thermal effects in perturbative noncommutative gauge theories'] | ['Particle Physics - Theory'] | ['gauge field theory, U(1)', 'gauge field theory, SU(N)', 'differential geometry, noncommutative', 'thermodynamics', 'perturbation theory, higher-order', 'higher-order, 2', 'energy'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912140'] | ['The thermodynamics of gauge theories on the noncommutative plane is studied in perturbation theory. For U(1) noncommutative Yang-Mills we compute the first quantum correction to the ideal gas free energy density and study their behavior in the low and high temperature regimes. Since the noncommutativity scale effecti... | ['1999-12-17'] |
4,455 | ['eng'] | ['Rivelles, V O'] | ['Holographic Principle and AdS/CFT Correspondence'] | ['Particle Physics - Theory'] | ['talk, Dubna 1999/07/26', 'gauge field theory, U(1)', 'Chern-Simons term', 'field theory, Euclidean', 'field theory, scalar', 'any-dimensional', 'space-time, anti-de Sitter', 'field theory, conformal', 'two-point function', 'holography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912139'] | ["According to the holographic principle all information in the bulk of a space is coded at its border. We will check this statement in three situations involving the AdS/CFT correspondence. There is a well known equivalence between the Maxwell-Chern-Simons theory and the self-dual model in 3 dimensions when the parame... | ['1999-12-17'] |
4,456 | ['eng'] | ['Andrasi, A'] | ['Renormalization of Wilson Operators in the Light-Cone Gauge'] | ['Particle Physics - Theory'] | ['gauge field theory, Yang-Mills', 'Wilson loop', 'perturbation theory, higher-order', 'renormalization', 'dependence, gauge', 'light cone gauge'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912138'] | ['We test the renormalization of Wilson operators and the Mandelstam- Leibbrandt gauge in the case when the sides of the loop are parallel to the n, n* vectors used in the M-L gauge. Graphs which in the Feynman gauge are free of ultra-violet divergences, in the M-L gauge show double divergences and single divergences w... | ['1999-12-17'] |
4,457 | ['eng'] | ['Markopoulou, F'] | ["An insider's guide to quantum causal histories"] | ['Particle Physics - Theory'] | ['talk, Villasimius 1999/09/14', 'astrophysics, model', 'quantum gravity', 'causality', 'Hilbert space', 'relativity theory, general', 'spin, network'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912137'] | ['A review is given of recent work aimed at constructing a quantum theory of cosmology in which all observables refer to information measurable by observers inside the universe. At the classical level the algebra of observables should be modified to take into account the fact that observers can only give truth values t... | ['1999-12-17'] |
4,458 | ['eng'] | ['Brown, W E', 'Garrahan, J P', 'Kogan, I I', 'Kovner, A'] | ['Gauge Invariant Variational Approach with Fermions'] | ['Particle Physics - Theory'] | ['Schwinger model', 'dimension, 2', 'invariance, gauge', 'mathematical methods, variational', 'partition function', 'Hamiltonian formalism', 'Gauss law', 'bosonization', 'condensation, chiral', 'anomaly, chiral'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912136'] | ['We extend the gauge invariant variational approach of Phys. Rev. D52 (1995) 3719, hep-th/9408081, to theories with fermions. As the simplest example we consider the massless Schwinger model in 1+1 dimensions. We show that in this solvable model the simple variational calculation gives exact results.'] | ['1999-12-17'] |
4,459 | ['eng'] | ['Emparan, R', 'Horowitz, Gary T', 'Myers, R C'] | ['Exact Description of Black Holes on Branes; 2, Comparison with BTZ Black Holes and Black Strings'] | ['Particle Physics - Theory'] | ['membrane model', 'mass', 'angular momentum', 'string model', 'astrophysics, fundamental constant', 'field equations, solution', 'black hole', 'entropy', 'temperature, Hawking', 'asymptotic behavior'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912135'] | ["We extend our recent discussion of four-dimensional black holes bound to a two-brane to include a negative cosmological constant on the brane. We find that for large masses, the solutions are precisely BTZ black holes on the brane, and BTZ `black strings' in the bulk. For smaller masses, there are localized black hol... | ['1999-12-16'] |
4,460 | ['eng'] | ['Chyi, T K', 'Hwang, C W', 'Kao, W F', 'Lin, G L', 'Ng, K W', 'Tseng, J J'] | ['The weak-field expansion for processes in a homogeneous background magnetic field'] | ['Particle Physics - Theory'] | ['fermion, propagator', 'expansion, weak field', 'magnetic field, background field', 'photon photon, scattering', 'neutrino, pair production', 'effective Lagrangian'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912134'] | ["The weak-field expansion of the charged fermion propagator under a uniform magnetic field is studied. Starting from Schwinger's proper-time representation, we express the charged fermion propagator as an infinite series corresponding to different Landau levels. This infinite series is then reorganized according to th... | ['1999-12-16'] |
4,461 | ['eng'] | ['Ennes, I P', 'Lozano, C', 'Naculich, S G', 'Schnitzer, H J'] | ['Elliptic models and M-theory'] | ['Particle Physics - Theory'] | ['M-theory', 'supersymmetry', 'model, elliptic', 'gauge field theory, Yang-Mills', 'instanton', 'fermion, flavor', 'universality', 'particle, multiplet', 'geometry, algebra', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912133'] | ['We give a unified analysis of four-dimensional elliptic models with N=2 supersymmetry and a simple gauge group, and their relation to M-theory. Explicit calculations of the Seiberg-Witten curves and the resulting one-instanton prepotential are presented. The remarkable regularities that emerge are emphasized. In addi... | ['1999-12-16'] |
4,462 | ['eng'] | ['Bakas, Ioannis', 'Brandhuber, A', 'Sfetsos, K'] | ['Domain walls of gauged supergravity, M-branes and algebraic curves'] | ['Particle Physics - Theory'] | ['M-theory', 'membrane model', 'gauge field theory', 'supergravity', 'domain wall', 'field equations, solution', 'fluctuation', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912132', 'http://pascal.intlpress.com/journals/ATMP/archive/'] | ["We provide an algebraic classification of all supersymmetric domain wall solutions of maximal gauged supergravity in four and seven dimensions, in the presence of non-trivial scalar fields in the coset SL(8,R)/SO(8) and SL(5,R)/SO(5) respectively. These solutions satisfy first-order equations, which can be obtained u... | ['1999-12-16'] |
4,463 | ['eng'] | ['Petermann, Andreas'] | ['Vector Fields, Flows and Lie Groups of Diffeomorphisms'] | ['Particle Physics - Theory'] | ['renormalization, finite', 'group theory, Lie', 'group theory, diffeomorphism'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912131'] | ["\\sigma_{c+t} (x) = \\sigma_c (\\sigma_t (x)) \\equiv \\sigma_c \\circ evolution equation implies at once the Gell-Mann-Low functional equation. The latter appears therefore as a trivial consequence of the existence of a vector field on the action's space of renormalized QFT."] | ['1999-12-16'] |
4,464 | ['eng'] | ['Landi, G', 'Lizzi, F', 'Szabo, R J'] | ['From Large N Matrices to the Noncommutative Torus'] | ['Particle Physics - Theory'] | ['differential geometry, noncommutative', 'matrix model, geometry', 'expansion 1/N', 'gauge field theory, Yang-Mills'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912130'] | ['We describe how and to what extent the noncommutative two-torus can be approximated by a tower of finite-dimensional matrix geometries. The approximation is carried out for both irrational and rational deformation parameters by embedding the algebra of the noncommutative torus into an approximately finite algebra. Th... | ['1999-12-16'] |
4,465 | ['eng'] | ['Kazakov, K A', 'Pronin, P I'] | ['Gauge dependence of effective gravitational field'] | ['Particle Physics - Theory'] | ['field theory, scalar', 'gravitation', 'effective action', 'transformation, Becchi-Rouet-Stora', 'Slavnov identity', 'dependence, gauge', 'perturbation theory, higher-order'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912129'] | ['The problem of gauge independent definition of effective gravitational field is considered from the point of view of the process of measurement. Effective Slavnov identities for the generating functionals of Green functions corresponding to a system of arbitrary gravitational field measured by a single classical scal... | ['1999-12-16'] |
4,466 | ['eng'] | ['Grillo, N'] | ['Scalar Matter Coupled to Quantum Gravity in the Causal Approach'] | ['Particle Physics - Theory'] | ['quantum gravity', 'field theory, scalar', 'causality', 'perturbation theory, higher-order', 'higher-order, 2', 'invariance, gauge', 'propagator'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912128'] | ['Quantum gravity coupled to scalar massive matter fields is investigated within the framework of causal perturbation theory. One-loop calculations include matter loop graviton self-energy and matter self-energy and yield ultraviolet finite and cutoff-free expressions. Perturbative gauge invariance to second order impl... | ['1999-12-16'] |
4,467 | ['eng'] | ['Chen, C M', 'Galtsov, D V', 'Sharakin, S A'] | ['Einstein Gravity-Supergravity Correspondence'] | ['Particle Physics - Theory'] | ['talk, Beijing 1999/10/10', 'supergravity', 'dimension, 11', 'gravitation', 'Einstein equation', 'dimension, 8', 'symmetry, Killing', 'Kaluza-Klein model', 'dimensional reduction', 'membrane model', 'M-theory', 'dyon', 'differential forms'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912127'] | ['A correspondence between the three-block truncated 11D supergravity and the 8D pure Einstein gravity with two commuting Killing symmetries is discussed. The Kaluza-Klein two-forms of the 6D theory obtained after dimensional reduction along the Killing orbits generate the four-form field of supergravity via an inverse... | ['1999-12-16'] |
4,468 | ['eng'] | ['Singleton, D'] | ['Glueball Spin'] | ['Particle Physics - Theory'] | ['glueball, spin', 'quantum chromodynamics', 'angular momentum, operator', 'color', 'commutation relations', 'magnetic monopole'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912126'] | ['The spin of a glueball is usually taken as coming from the spin (and possibly the orbital angular momentum) of its constituent gluons. In light of the difficulties in accounting for the spin of the nucleon from its constituent quarks, the spin of the glueballs is reexamined. The starting point is the fundamental QCD ... | ['1999-12-16'] |
4,469 | ['eng'] | ['Kaloper, N'] | ['Crystal Manyfold Universes in AdS Space'] | ['Particle Physics - Theory'] | ['space-time, anti-de Sitter', 'membrane model', 'field equations, solution', 'fluctuation', 'Schroedinger equation', 'astrophysics, crystal', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912125'] | ['We derive crystal braneworld solutions, comprising of intersecting families of parallel n+2-branes in a 4+n-dimensional AdS space. Each family consists of alternating positive and negative tension branes. In the simplest case of exactly orthogonal families, there arise different crystals with unbroken 4D Poincare inv... | ['1999-12-16'] |
4,470 | ['eng'] | ['Marshakov, A V'] | ['Duality in Integrable Systems and Generating Functions for New Hamiltonians'] | ['Particle Physics - Theory'] | ['integrability', 'duality', 'Seiberg-Witten model', 'tau-function', 'Theta function', 'lattice, Toda', 'Calogero-Moser model'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912124'] | ['Duality in the integrable systems arising in the context of Seiberg-Witten theory shows that their tau-functions indeed can be seen as generating functions for the mutually Poisson-commuting hamiltonians of the {\\em dual} systems. We demonstrate that the $\\Theta$-function coefficients of their expansion can be expr... | ['1999-12-15'] |
4,471 | ['eng'] | ['Ooguri, H', 'Vafa, C'] | ['Knot Invariants and Topological Strings'] | ['Particle Physics - Theory'] | ['gauge field theory, SU(N)', 'Chern-Simons term', 'knot theory', 'expansion 1/N', 'Wilson loop', 'analytic properties', 'string, topological', 'conifold', 'membrane model', 'supersymmetry', 'instanton'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912123'] | ['We find further evidence for the conjecture relating large N Chern-Simons theory on S^3 with topological string on the resolved conifold geometry by showing that the Wilson loop observable of a simple knot on S^3 (for any representation) agrees to all orders in N with the corresponding quantity on the topological str... | ['1999-12-15'] |
4,472 | ['eng'] | ['Anselmi, D'] | ['Irreversibility and higher-spin conformal field theory'] | ['Particle Physics - Theory'] | ['field theory, conformal', 'dimension, 2', 'spin, high', 'anomaly, conformal', 'correlation function', 'invariance, gauge', 'ghost', 'renormalization group, transformation', 'operator product expansion', 'central charge'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912122'] | ['I discuss the idea that quantum irreversibility is a general principle of nature and a related "conformal hypothesis", stating that all fundamental quantum field theories should be renormalization-group (RG) interpolations between ultraviolet and infrared conformal fixed points. In particular, the Newton constant sho... | ['1999-12-15'] |
4,473 | ['eng'] | ['Berkovits, N'] | ['A New Approach to Superstring Field Theory'] | ['Particle Physics - Theory'] | ['talk, Buckow 1998/09/01', 'field theory, string', 'supersymmetry', 'operator, Becchi-Rouet-Stora', 'field theory, conformal', 'invariance, gauge'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912121'] | ['I review the construction of an action for open superstring field theory which does not suffer from the contact term problems of other approaches. I also discuss a possible generalization of this action for closed superstring field theory.'] | ['1999-12-15'] |
4,474 | ['eng'] | ['Berkovits, N', 'Echevarria, C T'] | ['Four-Point Amplitude from Open Superstring Field Theory'] | ['Particle Physics - Theory'] | ['field theory, string', 'string, open', 'supersymmetry', 'scattering amplitude', 'Wess-Zumino-Witten model', 'tree approximation', 'gauge fixing'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912120'] | ['An open superstring field theory action has been proposed which does not suffer from contact term divergences. In this paper, we compute the on-shell four-point tree amplitude from this action using the Giddings map. After including contributions from the quartic term in the action, the resulting amplitude agrees wit... | ['1999-12-15'] |
4,475 | ['eng'] | ['Galloway, G', 'Schleich, K', 'Witt, D M', 'Woolgar, E'] | ['The AdS/CFT Correspondence Conjecture and Topological Censorship'] | ['Particle Physics - Theory'] | ['field theory, anti-de Sitter', 'field theory, conformal', 'astrophysics, model', 'topology', 'homology'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912119'] | ["In gr-qc/9902061 it was shown that (n+1)-dimensional asymptotically anti-de-Sitter spacetimes obeying natural causality conditions exhibit topological censorship. We use this fact in this paper to derive in arbitrary dimension relations between the topology of the timelike boundary-at-infinity, simple corollary of to... | ['1999-12-15'] |
4,476 | ['eng'] | ['Garriga, J', 'Sasaki, M'] | ['Brane-world creation and black holes'] | ['Particle Physics - Theory'] | ['space-time, anti-de Sitter', 'dimension, 5', 'instanton', 'membrane model', 'transformation, conformal', 'black hole, pair production', 'finite temperature', 'astrophysics, model'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912118'] | ['An inflating brane-world can be created from ``nothing\'\' together with its Anti-de Sitter (AdS) bulk. The resulting space-time has compact spatial sections bounded by the brane. During inflation, the continuum of KK modes is separated from the massless zero mode by the gap $m=(3/2) H$, where $H$ is the Hubble rate.... | ['1999-12-15'] |
4,477 | ['eng'] | ['Malyuta, Y'] | ['D-Branes, AdS/CFT Correspondence, and T-Duality'] | ['Particle Physics - Theory'] | ['membrane model, D-brane', 'space-time, anti-de Sitter', 'field theory, conformal', 'duality, T-duality', 'string model', 'K-theory'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912117'] | ['The $D$-brane spectra in the Type IIB string theory compactified on $AdS_{p+2}\\times S^{8-p}$ are computed using the K-theory approach. The results signal the existence of the mirror-symmetry-analogue for $D$-branes, analogous to that rised in the context of derived categories.'] | ['1999-12-15'] |
4,478 | ['eng'] | ['Faber, M', 'Ivanov, A I', 'Müller, A', 'Troitskaya, N I'] | ['On the dual-vector field condensation in the dual Monopole Nambu-Jona-Lasinio model with dual Dirac strings'] | ['Particle Physics - Theory'] | ['Jona-Lasinio-Nambu model', 'effective Lagrangian', 'duality', 'magnetic monopole', 'string, Dirac', 'field theory, vector', 'condensation, vector', 'quantum chromodynamics, nonperturbative', 'gluon, condensation'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912116'] | ['The condensation of a dual-vector field is investigated in the dual Monopole Nambu-Jona-Lasinio model with dual Dirac strings. The condensate of a dual-vector field is calculated as a functional of a shape of a dual Dirac string. The obtained result is compared with the gluon condensate calculated in a QCD sum rules ... | ['1999-12-15'] |
4,479 | ['eng'] | ['Salehi, H'] | ['Translocality and a Duality Principle in Generally Covariant Quantum Field Theory'] | ['Particle Physics - Theory'] | ['axiomatic field theory', 'duality', 'algebra', 'kinematics', 'group theory'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912115'] | ['It is argued that the formal rules of correspondence between local observation procedures and observables do not exhaust the entire physical content of generally covariant quantum field theory. This result is obtained by expressing the distinguishing features of the local kinematical structure of quantum field theory... | ['1999-12-15'] |
4,480 | ['eng'] | ['Grillo, N'] | ['Finite One-Loop Corrections and Perturbative Gauge Invariance in Quantum Gravity Coupled to Photon Fields'] | ['Particle Physics - Theory'] | ['quantum gravity', 'gauge field theory, U(1)', 'perturbation theory, higher-order', 'field theory, finite', 'invariance, gauge', 'photon, propagator', 'Slavnov identity', 'Ward identity', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912114'] | ['One-loop calculations in quantum gravity coupled to U(1)-Abelian fields (photon fields) are ultraviolet finite and cutoff-free in the framework of causal perturbation theory. We compute the photon loop correction to the graviton propagator and the photon self-energy in second order perturbation theory. Perturbative g... | ['1999-12-15'] |
4,481 | ['eng'] | ['Castro, C'] | ['Hints of a New Relativity Principle from p-brane Quantum Mechanics'] | ['Particle Physics - Theory'] | ['membrane model, p-brane', 'quantum mechanics', 'field theory, tensor', 'model, composite', 'duality', 'loop space', 'wave function', 'Hamilton-Jacobi equation', 'relativity theory'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912113'] | ["This report is an extension of previous one hep-th/9812189. Several quantum mechanical wave equations for p-branes are proposed. The most relevant p-brane quantum mechanical wave equations determine the quantum dynamics involving the creation/destruction of p-dimensional loops of topology S^p, moving in a D dimension... | ['1999-12-15'] |
4,482 | ['eng'] | ['Bratchikov, A V'] | ['Generalized abelian coset conformal field theories'] | ['Particle Physics - Theory'] | ['field theory, conformal', 'coset space', 'fermion, parastatistics', 'symmetry, Z(N)', 'algebra, Virasoro', 'operator product expansion'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912112'] | ['Primary fields and correlators of an arbitrary abelian coset conformal field theory are explicitly expressed in terms of the two related conformal field theories. The coset theory has global abelian symmetry.'] | ['1999-12-15'] |
4,483 | ['eng'] | ['Niedermaier, M R', 'Samtleben, H'] | ['An Algebraic Bootstrap for Dimensionally Reduced Quantum Gravity'] | ['Particle Physics - Theory'] | ['quantum gravity', 'dimensional reduction', 'dimension, 2', 'bootstrap', 'Yang-Baxter equation', 'phase space', 'approximation, quasiclassical', 'symmetry breaking, SL(2,R)', 'sigma model, nonlinear', 'coset space', 'Bethe ansatz', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912111'] | ["Cylindrical gravitational waves of Einstein gravity are described by an integrable system (Ernst system) whose quantization is a long standing problem. We propose to bootstrap the quantum theory along the following lines: The quantum theory is described in terms of matrix elements e.g. of the metric operator between ... | ['1999-12-15'] |
4,484 | ['eng'] | ['Walker, M L'] | ['Supersymmetry and Chiral Symmetry'] | ['Particle Physics - Theory'] | ['supersymmetry', 'symmetry, chiral', 'effective potential', 'quantum electrodynamics', 'Dyson-Schwinger equation'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912110'] | ['We dispute a recent claim for a nonperturbative nonrenormalisation theorem stating that mass cannot be spontaneously generated in supersymmetric QED. We also extend a long-standing perturbative result, namely that the effective potential is zero to all orders of perturbation theory, to the nonperturbative regime for ... | ['1999-12-14'] |
4,485 | ['eng'] | ['Scrucca, Claudio A', 'Serone, M'] | ['Gauge and gravitational anomalies in D=4 N=1 orientifolds'] | ['Particle Physics - Theory'] | ['string model', 'supersymmetry', 'anomaly, U(1)', 'anomaly, gauge', 'anomaly, gravitation', 'orientifold, Z(N)'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912108'] | ['The cancellation of U(1)-gauge and U(1)-gravitational anomalies in certain D=4 N=1 Type IIB orientifolds is analyzed in detail, from a string theory point of view. We verify the proposal that these anomalies are cancelled by a Green-Schwarz mechanism involving only twisted Ramond-Ramond fields. By factorizing one-loo... | ['1999-12-14'] |
4,486 | ['eng'] | ['Ceresole, Anna T', "Dall'Agata, G", "D'Auria, R", 'Ferrara, Sergio'] | ['M Theory on the Stiefel manifold and 3d Conformal Field Theories'] | ['Particle Physics - Theory'] | ['M-theory', 'spontaneous compactification', 'space-time, anti-de Sitter', 'field theory, conformal', 'dimension, 3', 'Kaluza-Klein model', 'supergravity', 'particle, multiplet', 'mass spectrum'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912107'] | ['We compute the mass and multiplet spectrum of M theory compactified on the product of AdS(4) spacetime by the Stiefel manifold V(5,2)=SO(5)/SO(3), and we use this information to deduce via the AdS/CFT map the primary operator content of the boundary N=2 conformal field theory. We make an attempt for a candidate super... | ['1999-12-14'] |
4,487 | ['eng'] | ['Cederwall, Martin', 'Gran, U G', 'Nielsen, M', 'Nilsson, B E W'] | ['(p,q) 5-Branes in Non-Zero B-Field'] | ['Particle Physics - Theory'] | ['membrane model, p-brane', 'p-brane, 5', 'field theory, tensor', 'background field', 'supergravity', 'field equations, solution', 'zero mode'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912106'] | ['We consider type IIB (p,q) 5-branes in constant non-zero background tensor potentials, or equivalently, with finite constant field strength on the brane. At linear level, zero-modes are introduced and the physical degrees of freedom are found to be parametrised by a real 2- or 4-form field strength on the brane. An e... | ['1999-12-14'] |
4,488 | ['eng'] | ['Parsons, S'] | ['T-Duality and Conformal Invariance at Two Loops'] | ['Particle Physics - Theory'] | ['sigma model, nonlinear', 'torsion', 'duality, T-duality', 'invariance, conformal', 'perturbation theory, higher-order', 'higher-order, 2', 'anomaly'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912105'] | ['We show that the conformal invariance conditions for a general sigma-model with torsion are invariant under T-duality through two loops.'] | ['1999-12-14'] |
4,489 | ['eng'] | ['Dijkgraaf, R'] | ['Fields, Strings, Matrices and Symmetric Products'] | ['Particle Physics - Theory'] | ['lectures, Santa Barbara 1998/01', 'lectures, Cambridge 1998/05/04', 'quantum mechanics', 'sigma model, nonlinear', 'string model', 'matrix model', 'partition function', 'quantization', 'light cone gauge', 'orbifold', 'charge, topological', 'geometry, algebra', 'gauge field theory, Yang-Mills', 'supersymmetry'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912104'] | ['In these notes we review the role played by the quantum mechanics and sigma models of symmetric product spaces in the light-cone quantization of quantum field theories, string theory and matrix theory. Lectures given at the Institute for Theoretical Physics, UC Santa Barbara, January 1998 and the Spring School on Str... | ['1999-12-14'] |
4,490 | ['eng'] | ['Brax, P'] | ['The Supermoduli Space of Matrix String Theory'] | ['Particle Physics - Theory'] | ['matrix model', 'string model', 'supersymmetry', 'moduli space', 'instanton', 'scattering amplitude, higher-order', 'Riemann surfaces', 'expansion 1/N'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912103'] | ['We study matrix string scattering amplitudes and matrix string instantons on a marked Riemann surface in the limit of a vanishing string coupling constant. We give an explicit parameterization of the moduli space of such instantons. We also give a description of the set of fermionic supermoduli. The integration over ... | ['1999-12-14'] |
4,491 | ['eng'] | ['Kenneth, O'] | ['Generalized Casimir Energies for systems with arbitrary ($\\epsilon (z)$) planar geometry'] | ['Particle Physics - Theory'] | ['energy, Casimir', 'dielectric', 'field theory, scalar', 'potential', 'transfer matrix'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912102'] | ['The Casimir force between parallel plates of arbitrary kind is shown to be simply related to the plates transmission and reflection coefficient. A trivial application of this general relation leads to the known Lifshitz force between dielectrics as well as its generalizations.'] | ['1999-12-14'] |
4,492 | ['eng'] | ['Dijkgraaf, R'] | ['Discrete Torsion and Symmetric Products'] | ['Particle Physics - Theory'] | ['field theory, conformal', 'dimension, 2', 'orbifold', 'torsion, discrete', 'Hamiltonian formalism', 'Riemann surfaces', 'string model', 'supersymmetry'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912101'] | ["In this note we point out that a symmetric product orbifold CFT can be twisted by a unique nontrivial two-cocycle of the permutation group. This discrete torsion changes the spins and statistics of corresponding second-quantized string theory making it essentially ``supersymmetric.'' The long strings of even length b... | ['1999-12-14'] |
4,493 | ['eng'] | ['Polyakov, D G', 'Sheikh-Jabbari, S'] | ['Closed String Brane-Like States, Brane Bound States and Noncommutative Branes'] | ['Particle Physics - Theory'] | ['string model', 'membrane model, noncommutative', 'bound state', 'sigma model'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912100'] | ['We study the mass and different RR charge distributions of the BPS (p,p-2)-brane bound states in the closed string brane-like $\\sigma$-model. We show that such brane bound states can be realized by introducing a constant B field in the closed string theory. In addition we show that the worldvolume coordinates of the... | ['1999-12-14'] |
4,494 | ['eng'] | ['Bijtebier, J'] | ['Two and three-fermion 3D equations deduced from Bethe-Salpeter equations'] | ['Particle Physics - Theory'] | ['fermion, field theory', 'dimension, 3', 'bound state', 'Bethe-Salpeter equation, solution', 'three-body problem', 'perturbation theory, higher-order', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912099'] | ['We write a 3D equation for three fermions by combining the three two-body potentials obtained in 3D reductions (based on a series expansion around a relative-energy fixing "approximation" of the free propagators) of the corresponding two-fermion Bethe-Salpeter equations to equivalent 3D equations, putting the third f... | ['1999-12-14'] |
4,495 | ['eng'] | ['Hamada, K'] | ['A Candidate for Renormalizable and Diffeomorphism Invariant 4D Quantum Theory of Gravity'] | ['Particle Physics - Theory'] | ['quantum gravity', 'partition function', 'dimension, 2', 'dimension, 4', 'perturbation theory, higher-order', 'higher-order, 2', 'renormalization', 'invariance, diffeomorphism', 'bibliography'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912098'] | ['We present evidences that there is a 4D model satisfying the conditions of renormalizability and diffeomorphism invariance simultaneously at 2-loop level. The traceless mode is treated perturbatively, while the conformal mode can be managed exactly. The two conditions constrain the theory strongly, and will determine... | ['1999-12-14'] |
4,496 | ['eng'] | ['Grillo, N'] | ['Finite One-Loop Calculations in Quantum Gravity'] | ['Particle Physics - Theory'] | ['quantum gravity', 'perturbation theory, higher-order', 'field theory, finite', 'graviton, propagator', 'Slavnov identity', 'Ward identity', 'invariance, gauge'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912097'] | ['In this paper we show that the one-loop graviton self-energy contribution is ultraviolet finite, without introducing counterterms, and cutoff-free in the framework of causal perturbation theory. In addition, it satisfies the gravitational Slavnov-Ward identities for the two-point connected Green function. The conditi... | ['1999-12-14'] |
4,497 | ['eng'] | ['Yokoi, N', 'Nakatsu, T'] | ['Three-Dimensional Extremal Black Holes and the Maldacena Duality'] | ['Particle Physics - Theory'] | ['black hole', 'dimension, 3', 'space-time, anti-de Sitter', 'dimension, 2', 'entropy, Hawking', 'approximation, quasiclassical', 'sigma model, nonlinear', 'duality'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912096'] | ['We discuss the microscopic states of the extremal BTZ black holes. Degeneracy of the primary states corresponding to the extremal BTZ black holes in the boundary N=(4,4) SCFT is obtained by utilizing the elliptic genus and the unitary representation theory of N=4 SCA. The degeneracy is consistent with the Bekenstein-... | ['1999-12-14'] |
4,498 | ['eng'] | ['Thomassen, J B'] | ['Chiral anomalies and Poincaré invariance'] | ['Particle Physics - Theory'] | ['anomaly, chiral', 'invariance, Poincare', 'fermion, Dirac', 'regularization', 'angular momentum, current', 'tensor, energy-momentum', 'operator, Dirac', 'quantization', 'gauge field theory, nonabelian'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912095'] | ['I consider theories of Dirac fermions with different regularizations, leading to different chiral anomalies. I have investigated the Poincare invariance properties of these theories. I find that both Lorentz and translational invariance are anomalously violated in general, but that they are respected in a theory that... | ['1999-12-14'] |
4,499 | ['eng'] | ['Hayakawa, M'] | ['Perturbative analysis on infrared aspects of noncommutative QED on $R^{4}$'] | ['Particle Physics - Theory'] | ['quantum electrodynamics, noncommutative', 'infrared problem', 'coupling, minimal', 'magnetic moment', 'symmetry breaking, Lorentz', 'vacuum polarization', 'gauge field theory, chiral', 'any-dimensional', 'perturbation theory'] | ['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9912094'] | ['Here we examine the noncommutative counterpart of QED, which is called as noncommutative QED. The theory is obtained by examining the consistent minimal coupling to noncommutative U(1) gauge field. The *-product admits the coupling of the matter with only three varieties of charges, i.e., 0, 1 and -1. The ultraviolet... | ['1999-12-14'] |
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