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400
['eng']
['Duval, C', 'Horváthy, P A']
['Exotic galilean symmetry in the non-commutative plane, and the Hall effect']
['Particle Physics - Theory']
['quantum mechanics', 'space-time, noncommutative', 'symmetry, Galilei', 'Hall effect', 'magnetic field, planar']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106089']
["Quantum Mechanics in the non-commutative plane is shown to admit the ``exotic'' symmetry of the doubly-centrally-extended Galilei group. When coupled to a planar magnetic field whose strength is the inverse of the non-commutative parameter, the system becomes singular, and ``Faddeev-Jackiw'' reduction yields the ``Ch...
['2001-06-13']
401
['eng']
['Batalin, I', 'Marnelius, R']
['Gauge theory of second class constraints without extra variables']
['Particle Physics - Theory']
['gauge field theory', 'constraint', 'quantization', 'path integral, measure', 'superfield']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106087']
['We show that any theory with second class constraints may be cast into a gauge theory if one makes use of solutions of the constraints expressed in terms of the coordinates of the original phase space. We perform a Lagrangian path integral quantization of the resulting gauge theory and show that the natural measure f...
['2001-06-13']
402
['eng']
['Wang, B', 'Abdalla, Elcio', 'Su, R K']
['Friedmann equation and Cardy formula correspondence in brane universes']
['Particle Physics - Theory']
['membrane model', 'black hole, horizon', 'space-time, anti-de Sitter', 'entropy', 'dimension, 5', 'dimension, 4', 'field theory, conformal', 'Friedman model', 'domain wall']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106086']
['We study the brane with arbitrary tension $\\sigma$ on the edge of various black holes with AdS asymptotics. We investigate Friedmann equations governing the motion of the brane universes and match the Friedmann equation to Cardy entropy formula.']
['2001-09-14']
403
['eng']
['Guendelman, E I']
['A New Measure, Scale Invariance and See Saw Cosmology']
['Particle Physics - Theory']
['talk, Chapel Hill 2001/04/10', 'astrophysics, fundamental constant', 'scaling, invariance', 'seesaw model', 'gravitation', 'energy, vacuum state', 'measure', 'field theory, scalar', 'fermion', 'dilaton, potential']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106085']
['The cosmological constant problem and the possibility of obtaining a see saw cosmological effect, where the effective vacuum energy is highly suppressed by the existence of a large scale is investigated in the context of scale-invariant, generally covariant theory. Scale invariance is considered in the context of a g...
['2001-06-12']
404
['eng']
['Vilenkin, A']
['Cosmological constant problems and their solutions']
['Particle Physics - Theory']
['talk, Chapel Hill 2001/04/10', 'talk, Baltimore 2001/04/02', 'astrophysics, fundamental constant', 'energy, vacuum state', 'galaxy, production', 'quintessence', 'field theory, scalar', 'potential', 'membrane model', 'renormalization', 'string model']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106083']
['There are now two cosmological constant problems: (i) why the vacuum energy is so small and (ii) why it comes to dominate at about the epoch of galaxy formation. Anthropic selection appears to be the only approach that can naturally resolve both problems. The challenge presented by this approach is that it requires s...
['2001-06-12']
405
['eng']
['Ambjørn, Jan', 'Jurkiewicz, J', 'Loll, R', 'Vernizzi, G']
['Lorentzian 3d Gravity with Wormholes via Matrix Models']
['Particle Physics - Theory']
['quantum gravity, Lorentz', 'dimension, 3', 'wormhole', 'matrix model', 'transfer matrix', 'simplex', 'critical phenomena', 'continuum limit']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106082']
['We uncover a surprising correspondence between a non-perturbative formulation of three-dimensional Lorentzian quantum gravity and a hermitian two-matrix model with ABAB-interaction. The gravitational transfer matrix can be expressed as the logarithm of a two-matrix integral, and we deduce from the known structure of ...
['2001-06-12']
406
['eng']
['Lidsey, J E']
['Dilatonic Domain Walls and Curved Intersecting Branes']
['Particle Physics - Theory']
['membrane model', 'supergravity', 'dimension, 11', 'dilaton', 'domain wall', 'duality', 'astrophysics, model']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106081']
['Curved, intersecting brane configurations satisfying the type IIA supergravity equations of motion are found. In eleven dimensions, the models are interpreted in terms of orthogonally intersecting M5--branes, where the world--volumes are curved due to the effects of one or more massless scalar fields. Duality symmetr...
['2001-06-12']
407
['eng']
['Hortacsu, M']
['Explicit Examples on Conformal Invariance']
['Particle Physics - Theory']
['invariance, conformal', 'triviality', 'critical phenomena', 'black hole']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106080']
['We study examples where conformal invariance implies rational critical indices, triviality of the underlying quantum field theory and emergence of hypergeometric functions as solutions of the field equations.']
['2001-06-12']
408
['eng']
['Suyama, T']
['Closed String Tachyons in Non-supersymmetric Heterotic Theories']
['Particle Physics - Theory']
['tachyon', 'string model, heterotic', 'string, open', 'supersymmetry', 'partition function', 'M-theory', 'dimension, 11', 'duality', 'background, Melvin']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106079']
['We calculate partition functions for supersymmetric heterotic theories on Melvin background with Wilson line. These functions coincide with partition functions for some of non-supersymmetric heterotic theories in appropriate limits. This suggests that non-supersymmetric heterotic theories are equivalent to supersymme...
['2001-06-12']
409
['eng']
['Park, I Y']
['Strong Coupling Limit of Open Strings']
['Particle Physics - Theory']
['string model, open', 'duality', 'field theory, tensor', 'approximation, strong coupling', 'Born-Infeld model', 'Hamiltonian formalism', 'field theory, anti-de Sitter', 'field theory, conformal', 'matrix model']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106078']
['We consider a large coupling limit of a Born-Infeld action in a curved background of an arbitrary metric and a constant two form field. Following hep-th/0009601, we go to the Hamiltonian description. The Hamiltonian can be dualized and the dual action admits a string-like configuration as its solution. We interpret i...
['2001-06-12']
410
['eng']
['Sitenko, Yu A']
['Effects of singular external fields and boundary condition on the vacuum of massless fermions in QFT']
['Particle Physics - Theory']
['talk, Moscow 2000/06/05', 'fermion, massless', 'vacuum state', 'magnetic field, external field', 'vortex, singularity', 'boundary condition', 'dimension, 2', 'parity, violation', 'angular momentum']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106077']
['Effects of the configuration of an external static magnetic field in the form of a singular vortex on the vacuum of a quantized massless spinor field are studied. The most general boundary conditions at the punctured singular point which make the twodimensional Dirac Hamiltonian to be self-adjoint are employed.']
['2001-06-12']
411
['eng']
['Flachi, A', 'Moss, I G', 'Toms, David J']
['Quantized bulk fermions in the Randall-Sundrum brane model']
['Particle Physics - Theory']
['Randall-Sundrum model', 'fermion, massive', 'effective action', 'Kaluza-Klein model', 'heat kernel', 'asymptotic expansion', 'energy, vacuum state', 'invariance, conformal', 'symmetry breaking, topological', 'boundary condition', 'invariance, gauge', 'numerical calculations', 'bibliography']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106076']
['The lowest order quantum corrections to the effective action arising from quantized massive fermion fields in the Randall-Sundrum background spacetime are computed. The boundary conditions and their relation with gauge invariance are examined in detail. The possibility of Wilson loop symmetry breaking in brane models...
['2001-06-12']
412
['eng']
['Arnsdorf, M', 'Smolin, L']
['The Maldacena Conjecture and Rehren Duality']
['Particle Physics - Theory']
['gauge field theory, SU(N)', 'supersymmetry', 'dimension, 4', 'field theory, conformal', 'duality', 'string model', 'dimension, 10', 'space-time, anti-de Sitter', 'field theory, algebra']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106073']
['We analyse the implications of the fact that there are two claims for a dual to \\N=4 superconformal SU(N) Yang-Mills theory (SCYM), the Maldacena conjecture and the theorem of Rehren. While the Maldacena dual is conjectured to be a non-perturbative string theory for large string coupling $g_s$ and small $N$, the Reh...
['2001-09-14']
413
['eng']
['Morariu, B', 'Polychronakos, A P']
['Finite Noncommutative Chern-Simons with a Wilson Line and the Quantum Hall Effect']
['Particle Physics - Theory']
['Chern-Simons term, noncommutative', 'Wilson loop', 'matrix model', 'Hall effect', 'quantization', 'gauge field theory, U(N)', 'Gauss law', 'Hilbert space']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106072']
['We present a finite dimensional matrix model associated to the noncommutative Chern-Simons theory, obtained by inserting a Wilson line. For a specific choice of the representation of the Wilson line the model is equivalent to the minimal modification of the matrix model which is compatible with finite dimensional mat...
['2001-06-11']
414
['eng']
['Azakov, S I']
['The General Correlation Function in the Schwinger Model on a Torus']
['Particle Physics - Theory']
['Schwinger model', 'torus', 'correlation function', 'density, chiral', 'path integral', 'zero mode', 'transformation, modular', 'effective action', 'propagator', 'condensation, chiral']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106071']
['In the framework of the Euclidean path integral approach we derive the exact formula for the general N-point chiral densities correlator in the Schwinger model on a torus']
['2001-06-11']
415
['eng']
['Ohmori, K']
['Survey of the Tachyonic Lump in Bosonic String Field Theory']
['Particle Physics - Theory']
['field theory, string', 'boson, string', 'field equations, solution', 'tachyon', 'fluctuation, spectra', 'membrane model, D-brane', 'membrane model, p-brane', 'mass spectrum', 'numerical calculations', 'bibliography']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106068']
['We study some properties of the tachyonic lumps in the level truncation scheme of bosonic cubic string field theory. We find that several gauges work well and that the size of the lump as well as its tension is approximately independent of these gauge choices at level (2,4). We also examine the fluctuation spectrum a...
['2001-06-11']
416
['eng']
['Corley, S', 'Lowe, D', 'Ramgoolam, S']
['Einstein-Hilbert action on the brane for the bulk graviton']
['Particle Physics - Theory']
['membrane model', 'graviton', 'string, coupling', 'tachyon', 'scattering amplitude']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106067']
['We find new closed string couplings on Dp-branes for the bosonic string. These couplings are quadratic in derivatives and therefore take the form of induced kinetic terms on the brane. For the graviton in particular we find the induced Einstein-Hilbert term as well as terms quadratic in the second fundamental tensor....
['2001-09-14']
417
['eng']
['Schrör, B']
['Uniqueness of Inverse Scattering Problem in Local Quantum Physics']
['Particle Physics - Theory']
['inverse scattering method', 'form factor', 'symmetry, crossing', 'group theory, modular', 'S-matrix']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106066']
['It is shown that the a Bisognano-Wichmann-Unruh inspired formulation of local quantum physics which starts from wedge-localized algebras, leads to a uniqueness proof for the scattering problem. The important mathematical tool is the thermal KMS aspect of localization and its strengthening by the requirement of crossi...
['2001-06-08']
418
['eng']
['Boulanger, N', 'Henneaux, M']
['A derivation of Weyl gravity']
['Particle Physics - Theory']
['talk, Bonn 2001/03/26', 'gravitation, Weyl', 'gravitation, linear', 'deformation', 'cohomology', 'invariance, Becchi-Rouet-Stora', 'invariance, conformal', 'graviton, coupling', 'algebra, gauge']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106065']
['In this paper, two things are done. (i) Using cohomological techniques, we explore the consistent deformations of linearized conformal gravity in 4 dimensions. We show that the only possibility involving no more than 4 derivatives of the metric (i.e., terms of the form $\\partial^4 g_{\\mu \\nu}$, $\\partial^3 g_{\\m...
['2001-06-08']
419
['eng']
['Fassarella, L', 'Schrör, B']
['The Fuzzy Analog of Chiral Diffeomorphisms in higher dimensional Quantum Field Theories']
['Particle Physics - Theory']
['diffeomorphism, chiral', 'operator, algebra', 'fuzzy', 'group theory, modular', 'algebra, Weyl', 'holography', 'axiomatic field theory', 'higher-dimensional']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106064']
["Our observation that the chiral diffeomorphisms allow an interpretation as modular groups of local operator algebras in the sense of Tomita and Takesaki allows us to conclude that the higher dimensional generalizations are certain infinite dimensional groups which act in a ``fuzzy'' way on the operator algebras of lo...
['2001-06-08']
420
['eng']
['Bilal, Adel']
['Higher-Derivative Corrections to the Non-Abelian Born-Infeld Action']
['Particle Physics - Theory']
['string model, open', 'supersymmetry', 'effective action', 'gauge field theory, U(N)', 'scattering amplitude, higher-order', 'Born-Infeld model, nonabelian', 'derivative, high']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106062']
["We determine higher-derivative terms in the open superstring effective action with U(N) gauge group up to and including order alpha'^4 as can be extracted from 4 boson, 2 boson - 2 fermion and 4 fermion string scattering amplitudes. This yields corrections to the non-abelian Born-Infeld action involving higher deriva...
['2001-06-08']
421
['eng']
['Fucito, F', 'Morales, J F', 'Tanzini, A']
['D-instanton probes of non-conformal geometries']
['Particle Physics - Theory']
['gauge field theory, SU(N)', 'instanton', 'moduli space', 'membrane model, D-brane', 'membrane model, fractional', 'supersymmetry', 'field equations, duality', 'partition function', 'field theory, topological', 'cohomology', 'geometry, algebra', 'bibliography']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106061']
['D-instanton calculus has proved to be able to probe the AdS near horizon geometry for $N$ D-branes systems which, when decoupled from gravity, yield four dimensional superconformal gauge theories with various matter content. In this work we extend previous analysis to encompass fractional brane models which give rise...
['2001-06-08']
422
['eng']
['Ford, C', 'Jorjadze, G P', 'Weigt, G']
['Causal Poisson Brackets of the SL(2,R) WZNW Model and its Coset Theories']
['Particle Physics - Theory']
['Wess-Zumino-Witten model, SL(2,R)', 'coset space', 'Poisson bracket', 'field theory, Liouville', 'black hole']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106060']
['From the basic chiral and anti-chiral Poisson bracket algebra of the SL(2,R) WZNW model, non-equal time Poisson brackets are derived. Through Hamiltonian reduction we deduce the corresponding brackets for its coset theories.']
['2001-06-08']
423
['eng']
['Dvali, G', 'Gabadadze, Gregory T', 'Kolanovic, M', 'Nitti, F']
['Scales of Gravity']
['Particle Physics - Theory']
['gravitation', 'dimension, 5', 'dimension, 4', 'quantum gravity', 'membrane model', 'black hole', 'graviton, propagator', 'baryon number, violation', 'string model', 'matter, coupling', 'Compton scattering', 'annihilation', 'star, energy loss', 'astrophysics', 'numerical calculations']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106058']
["We propose a framework in which the quantum gravity scale can be as low as $10^{-3}$ eV. The key assumption is that the Standard Model ultraviolate cutoff is much higher than the quantum gravity scale. This ensures that we observe conventional weak gravity. We construct an explicit brane-world model in which the bran...
['2001-06-08']
424
['eng']
['Chan, G']
['Nonperturbative Recursion Relations in N=2 Supersymmetric Gauge Theories']
['Particle Physics - Theory']
['thesis', 'gauge field theory, SU(N)', 'supersymmetry', 'Seiberg-Witten model', 'effective potential', 'instanton, correction', 'nonperturbative', 'multiplet', 'renormalization group', 'group theory, representation', 'duality', 'string model', 'bibliography']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106045']
['Linear recursion relations for the instanton corrections to the effective prepotential are derived for two cases of N=2 supersymmetric gauge theories; the first case with an arbitrary number of hypermultiplets in the fundamental representation of an arbitrary classical gauge group, and the second case with one hyperm...
['2001-09-14']
425
['eng']
['Hori, K']
['Mirror Symmetry And Some Applications']
['Particle Physics - Theory']
['talk, Mumbai 2001/01/05', 'sigma model, nonlinear', 'symmetry, mirror', 'black hole', 'dimension, 2', 'field theory, Liouville', 'duality', 'membrane model, D-brane', 'gauge field theory, U(1)**N', 'dimension, 3', 'Landau-Ginzburg model']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106043']
["We report on recent progress in understanding mirror symmetry. Some of more recent generalizations and applications are also presented. --- A contribution to the Proceedings of ``Strings 2001'' at Mumbai, India."]
['2001-06-06']
426
['eng']
['Baulieu, L', 'Losev, A S', 'Nekrasov, N A']
['Target space symmetries in topological theories I']
['Particle Physics - Theory']
['string model, topological', 'diffeomorphism', 'charge', 'quantization, Batalin-Vilkovisky', 'master equation', 'sigma model, topological', 'symmetry, nonlocal', 'boundary condition', 'field theory, noncommutative', 'field theory, scalar', 'anomaly', 'gauge fixing']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106042']
['We study realization of the target space diffeomorphisms in the type C topological string. We found that the charges, which generate transformations of the boundary observables, form an algebra, which differs from that of bulk charges by the contribution of the bubbled disks. We discuss applications to noncommutative...
['2001-06-06']
427
['eng']
['Giovannini, M']
['Gauge-invariant fluctuations of scalar branes']
['Particle Physics - Theory']
['membrane model, scalar', 'space-time, fluctuation', 'invariance, gauge', 'potential', 'transformation, Lorentz', 'dimension, 4', 'dimension, 5', 'zero mode, fluctuation', 'supersymmetry', 'graviphoton', 'graviscalar']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106041']
['A generalization of the Bardeen formalism to the case of warped geometries is presented. The system determining the gauge-invariant fluctuations of the metric induced by the scalar fluctuations of the brane is reduced to a set of Schr\\"odinger-like equations for the Bardeen potentials and for the canonical normal mo...
['2001-06-06']
428
['eng']
['Das-Gupta, K', 'Oh, K', 'Tatar, R']
['Open/Closed String Dualities and Seiberg Duality from Geometric Transitions in M-theory']
['Particle Physics - Theory']
['string model, heterotic', 'string, closed', 'string, open', 'duality', 'orientifold', 'group theory', 'geometry, algebra', 'M-theory', 'transition, geometrical', 'gluino, condensation', 'gauge field theory, U(N)', 'bibliography']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106040']
['We propose a general method to study open/closed string dualities from transitions in M theory which is valid for a large class of geometrical configurations. By T-duality we can transform geometrically engineered configurations into N = 1 brane configurations and study the transitions of the corresponding branes by ...
['2001-06-06']
429
['eng']
['Hessling, H']
['On the Local Equilibrium Principle']
['Particle Physics - Theory']
['thermodynamics', 'stability', 'entropy', 'density matrix', 'model, hydrodynamical', 'field theory, scalar', 'tensor, energy-momentum', 'Unruh effect']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106039']
["A physical system should be in a local equilibrium if it cannot be distinguished from a global equilibrium by ``infinitesimally localized measurements''. This seems to be a natural characterization of local equilibrium, however the problem is to give a precise meaning to the qualitative phrase ``infinitesimally local...
['2001-06-06']
430
['eng']
['Casana, R', 'Alves-Dias, S']
['On the origin of divergences in massless $QED_2$']
['Particle Physics - Theory']
['quantum electrodynamics, massless', 'dimension, 2', 'Schwinger model', 'propagator', 'invariance, gauge', 'regularization']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106057']
["We show that ultraviolet divergences found in fermionic Green's functions of massless $QED_2$ have an essentially non-perturbative nature. We investigate their origin both in gauge invariant formalism (the one where we introduce Wess-Zumino fields to restore quantum gauge invariance) and in gauge non-invariant formal...
['2001-09-14']
431
['eng']
['Lagraa, M']
['The Quantum Spheres and their Embedding into Quantum Minkowski Space-Time']
['Particle Physics - Theory']
['group theory, Lorentz', 'quantum group, SL(2,C)', 'quantum space, sphere', 'phase space, Hilbert space', 'differential geometry, noncommutative', 'quantum space, Minkowski', 'quantum space, embedding']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106056']
['We recast the Podle\\`s spheres in the noncommutative physics context by showing that they can be regarded as slices along the time coordinate of the different regions of the quantum Minkowski space-time. The investigation of the transformations of the quantum sphere states under the left coaction of the ${\\cal SO}_...
['2001-06-07']
432
['eng']
['Hernández, R']
['Branes Wrapped on Coassociative Cycles']
['Particle Physics - Theory']
['membrane model, D-brane', 'membrane model, p-brane', 'p-brane, 6', 'dimension, 7', 'holonomy, G(2)', 'field equations, solution', 'supergravity', 'duality', 'gauge field theory, Yang-Mills', 'supersymmetry', 'dimension, 3', 'dimension, 11', 'field theory, deformation']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106055']
['We obtain a supergravity solution arising when D6-branes are wrapped on coassociative four-cycles of constant curvature in seven manifolds of G_2 holonomy. The solutions preserve two supercharges and thus represent supergravity duals of three dimensional Yang-Mills with N=1 supersymmetry. When uplifted to eleven dime...
['2001-06-07']
433
['eng']
['Chen, B', 'Lin, F L']
['Holographic Cosmic Quintessence on Dilatonic Brane World']
['Particle Physics - Theory']
['quintessence', 'holography', 'membrane model', 'dilaton', 'astrophysics, missing-mass', 'Hamilton-Jacobi equation', 'space-time, Robertson-Walker']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106054']
['Recently quintessence is proposed to explain the observation data of supernova indicating a time-varying cosmological constant and accelerating universe. Inspired by this and its mysterious origin, we look for the possibility of quintessence as the holographic dark matters dominated in the late time in the brane worl...
['2001-06-07']
434
['eng']
['Akemann, G']
['Microscopic correlations of non-Hermitian Dirac operators in three-dimensional QCD']
['Particle Physics - Theory']
['gauge field theory, SU(N)', 'lattice field theory', 'dimension, 3', 'dimension, 4', 'potential, chemical', 'fermion, flavor', 'operator, Dirac', 'expansion 1/N', 'n-point function', 'matrix model, random', 'numerical calculations']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106053']
['In the presence of a non-vanishing chemical potential the eigenvalues of the Dirac operator become complex. We calculate spectral correlation functions of complex eigenvalues using a random matrix model approach. Our results apply to non-Hermitian Dirac operators in three-dimensional QCD with broken flavor symmetry a...
['2001-06-07']
435
['eng']
['Bandelloni, G', 'Lazzarini, S']
['Primary currents and Riemannian geometry in W-algebras']
['Particle Physics - Theory']
['field theory, conformal', 'dimension, 2', 'algebra, W(N)', 'gravitation', 'current', 'Riemann surfaces', 'bibliography']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106052']
['It is proved that general consistency requirements of stability under complex analytic change of charts show that primary currents in finite chiral W-algebras are described in terms of pure gravitational variables.']
['2001-06-07']
436
['eng']
['Fujita, T', 'Kugo, T', 'Ohashi, K']
['Off-Shell Formulation of Supergravity on Orbifold']
['Particle Physics - Theory']
['supergravity', 'orbifold', 'dimension, 5', 'field theory, action', 'spontaneous compactification', 'membrane model', 'gauge field theory, Yang-Mills', 'astrophysics, fundamental constant', 'membrane, tension']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106051']
["An off-shell formulation is given for the ``supersymmetry in singular spaces'' which has recently been developed in an on-shell formalism by Bergshoeff, Kallosh and Van Proeyen using supersymmetry singlet `coupling constant' field and 4-form multiplier field in five-dimensional space-time. We present this formulation...
['2001-06-07']
437
['eng']
['Kiritsis, Elias B', 'Tetradis, N', 'Tomaras, T N']
['Thick branes and 4D gravity']
['Particle Physics - Theory']
['membrane model', 'gravitation, induced', 'dimension, 5', 'dimension, 4', 'dimension, 8', 'field equations, solution', 'spontaneous compactification']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106050']
['The induced 4d gravity on a brane world is analyzed. The case of a thick brane is considered and the unexpected appearance of a new threshold scale, much larger than the thickness scale is found. In cases of phenomenological interest, this new length scale turns out to be in the submillimeter range. The effect of $R^...
['2001-06-07']
438
['eng']
['Ebert, D', 'Klimenko, K G', 'Toki, H', 'Zhukovskii, V C']
['Chromomagnetic Catalysis of Color Superconductivity and Dimensional Reduction']
['Particle Physics - Theory']
['color, superconducting', 'dimensional reduction', 'diquark, condensation', 'quark, condensation', 'finite temperature', 'external field', 'critical phenomena', 'Jona-Lasinio-Nambu model']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106049']
['Diquark condensation in external chromomagnetic fields at non--zero temperature is considered. The general features of this process are investigated for various field configurations in relation to their symmetry properties and the form of the quark spectrum. According to the fields, there arises dimensional reduction...
['2001-06-07']
439
['eng']
['Douglas, M R', 'Nekrasov, N A']
['Noncommutative Field Theory']
['Particle Physics - Theory']
['review', 'field theory, noncommutative', 'space-time, symmetry', 'kinematics', 'soliton', 'instanton', 'Hall effect', 'operator, algebra', 'geometry, noncommutative', 'string model', 'M-theory', 'gauge field theory', 'bibliography']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106048']
['We review the generalization of field theory to space-time with noncommuting coordinates, starting with the basics and covering most of the active directions of research. Such theories are now known to emerge from limits of M theory and string theory, and to describe quantum Hall states. In the last few years they ha...
['2001-06-07']
440
['eng']
['Cai, R G']
['Superluminal Noncommutative Photons']
['Particle Physics - Theory']
['space-time, noncommutative', 'photon, superluminal', 'quantum electrodynamics, deformation', 'effective action', 'causality']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106047']
['With the help of the Seiberg-Witten map, one can obtain an effective action of a deformed QED from a noncommutative QED. Starting from the deformed QED, we investigate the propagation of photons in the background of electromagnetic field, up to the leading order of the noncommutativity parameter. In our setting (both...
['2001-06-07']
441
['eng']
['Van der Schaar, J P']
['The Reduced Open Membrane Metric']
['Particle Physics - Theory']
['membrane model', 'string model, open', 'space-time, torus', 'space-time, circle', 'invariance, SL(2,R)', 'geometry, noncommutative', 'coupling constant, string', 'duality', 'invariance, conformal']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106046']
['We discuss the reduction of the open membrane metric and determine the (previously unknown) conformal factor. We also construct SL(2,R) invariant open string metrics and complex open string coupling constants by reducing the open membrane metric on a 2-torus. In doing so we also clarify some issues on manifest SL(2,R...
['2001-06-07']
442
['eng']
['Guralnik, Z', 'Jackiw, R W', 'Pi, S Y', 'Polychronakos, A P']
['Testing Non-commutative QED, Constructing Non-commutative MHD']
['Particle Physics - Theory']
['quantum electrodynamics, noncommutative', 'photon, velocity', 'magnetic field, external field', 'fluid, charge', 'magnetic field, high', 'model, hydrodynamical', 'commutation relations']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106044']
['The effect of non-commutativity on electromagnetic waves violates Lorentz invariance: in the presence of a background magnetic induction field b, the velocity for propagation transverse to b differs from c, while propagation along b is unchanged. In principle, this allows a test by the Michelson-Morley interference m...
['2001-06-06']
443
['eng']
['Carter, B']
['Quasi gravity in branes']
['Particle Physics - Theory']
['talk, Rio de Janeiro 2000/10/16', 'membrane model', 'field equations', 'fluctuation, tensor', 'gravitation, effect', 'Brans-Dicke model']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106037']
['In contrast with pseudo-gravitational effects that are mathematically analogous but physically quite distinct from gravity, this presentation deals with a kind of quasi-gravitational effect that can act in an asymmetrically moving brane worldsheet in a manner that approximates (and in a crude analysis might be physic...
['2001-09-14']
444
['eng']
['Gross, David J', 'Taylor, W']
['Split string field theory, 2']
['Particle Physics - Theory']
['field theory, string', 'ghost, bosonization', 'operator, Becchi-Rouet-Stora', 'membrane model, D-brane', 'invariance, gauge', 'matter']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106036']
['We describe the ghost sector of cubic string field theory in terms of degrees of freedom on the two halves of a split string. In particular, we represent a class of pure ghost BRST operators as operators on the space of half-string functionals. These BRST operators were postulated by Rastelli, Sen, and Zwiebach to gi...
['2001-06-05']
445
['eng']
['Chen, W F']
['Issues on Radiatively Induced Lorentz and CPT Violation in Quantum Electrodynamics']
['Particle Physics - Theory']
['talk, London 2001/05/16', 'talk, Chapel Hill 2001/04/10', 'quantum electrodynamics', 'violation, Lorentz', 'violation, CPT', 'Chern-Simons term', 'radiative correction', 'effective action']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106035']
['Various ambiguous results on radiatively induced Lorentz and CPT violation in quantum electrodynamics with a modified fermionic sector are reviewed and possible explanations for this ambiguity appearing in the literature are commentated. Furthermore, Joint between stringent limit from astrophysical observation and th...
['2001-06-05']
446
['eng']
['Brandhuber, A', 'Gomis, J P', 'Gubser, S S', 'Gukov, S G']
['Gauge Theory at Large N and New G_2 Holonomy Metrics']
['Particle Physics - Theory']
['gauge field theory, Yang-Mills', 'supersymmetry', 'expansion 1/N', 'holonomy, G(2)', 'geometry', 'supergravity', 'duality', 'M-theory', 'membrane model, D-brane', 'instanton', 'potential, nonperturbative', 'effective Lagrangian', 'U(1) problem', 'conifold, deformation']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106034']
['We find a one-parameter family of new G_2 holonomy metrics and demonstrate that it can be extended to a two-parameter family. These metrics play an important role as the supergravity dual of the large $N$ limit of four dimensional supersymmetric Yang-Mills. We show that these G_2 holonomy metrics describe the M-theor...
['2001-06-05']
447
['eng']
['Akhmedov, E T', 'Laidlaw, M', 'Semenoff, Gordon W']
['On a Modification of the Boundary State Formalism in Off-shell String Theory']
['Particle Physics - Theory']
['string model, off-shell', 'string, open', 'boundary condition', 'scattering amplitude', 'membrane model, p-brane', 'symmetry, PSL(2,R)']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106033']
['We examine the application of boundary states in computing amplitudes in off-shell open string theory. We find a straightforward generalization of boundary state which produces the correct matrix elements with on-shell closed string states.']
['2001-06-05']
448
['eng']
['Khavaev, A', 'Warner, N P']
['An N=1 Supersymmetric Coulomb Flow']
['Particle Physics - Theory']
['supergravity', 'field equations, solution', 'gauge field theory, Yang-Mills', 'supersymmetry, superfield', 'renormalization group, transformation', 'membrane model', 'asymptotic behavior']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106032']
['We find a three-parameter family of solutions to IIB supergravity that corresponds to N=1 supersymmetric holographic RG flows of N=4 supersymmetric Yang Mills theory. This family of solutions allows one to give a mass to a single chiral superfield, and to probe a two-dimensional subspace of the Coulomb branch. In par...
['2001-06-05']
449
['eng']
['Moffat, J W']
['M-Theory']
['Particle Physics - Theory']
['M-theory', 'superspace', 'dimension, 11', 'geometry, noncommutative', 'space-time, de Sitter', 'horizon']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106031']
['We construct an eleven-dimensional superspace with superspace coordinates and formulate a finite M-theory using non-anticommutative geometry. The conjectured M-theory has the correct eleven-dimensional supergravity low energy limit. We consider the problem of finding a stable finite M-theory which has de Sitter space...
['2001-06-05']
450
['eng']
['Zunger, Y']
['Why Matrix theory works for oddly shaped membranes']
['Particle Physics - Theory']
['matrix model', 'membrane model', 'algebra, Poisson', 'string model', 'algebra, U(N)', 'algebra, SU(2)']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106030']
['We give a simple proof of why there is a Matrix theory approximation for a membrane shaped like an arbitrary Riemann surface. As corollaries, we show that noncompact membranes cannot be approximated by matrices and that the Poisson algebra on any compact phase space is U(infinity). The matrix approximation does not a...
['2001-06-05']
451
['eng']
['Pfeiffer, H']
['Four-dimensional Lattice Gauge Theory with ribbon categories and the Crane-Yetter state sum']
['Particle Physics - Theory']
['gauge field theory, Yang-Mills', 'lattice field theory, Euclidean', 'partition function', 'duality', 'triangulation', 'simplex', 'Wilson loop', 'group theory, Lie', 'quantum group', 'group theory, representation', 'category', 'spin, foam']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106029']
["Lattice Gauge Theory in 4-dimensional Euclidean space-time is generalized to ribbon categories which replace the category of representations of the gauge group. This provides a framework in which the gauge group becomes a quantum group while space-time is still given by the `classical' lattice. At the technical level...
['2001-06-05']
452
['eng']
['Ansoldi, S', 'Castro, C', 'Spallucci, E']
['The QCD Membrane']
['Particle Physics - Theory']
['gauge field theory, SU(N)', 'expansion 1/N', 'membrane model, deformation', 'quenching', 'mass spectrum', 'WKB approximation', 'matrix model', 'phase space, noncommutative']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106028']
['In this paper we study spatially quenched, SU(N) Yang-Mills theory in the large-N limit. The resulting reduced action shows the same formal look as the Banks-Fischler-Shenker-Susskind M-theory action. The Weyl-Wigner-Moyal symbol of this matrix model is the Moyal deformation of a p(=2)-brane action. Thus, the large-N...
['2001-06-05']
453
['eng']
['Matsuo, Y']
['Identity Projector and D-brane in String Field Theory']
['Particle Physics - Theory']
['field theory, string', 'membrane model, D-brane', 'geometry, noncommutative', 'field theory, conformal', 'entropy', 'membrane, tension', 'soliton, noncommutative']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106027']
['We study the identity projectors of the string field theory in the generic BCFT background. We explain how it can be identified as the projector in the linking algebra of the noncommutative geometry. We show that their (regularized) trace is exactly given by the boundary entropy which is proportional to the D-brane t...
['2001-06-05']
454
['eng']
['Cvetic, M', 'Gibbons, G W', 'Lu, H', 'Pope, C N']
['M3-branes, G_2 Manifolds and Pseudo-supersymmetry']
['Particle Physics - Theory']
['membrane model', 'holonomy', 'supersymmetry', 'supergravity', 'space-time, deformation', 'symmetry, SU(2)**3']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106026']
["We obtain a generalisation of the original complete Ricci-flat metric of G_2 holonomy on R^4 x S^3 to a family with a non-trivial parameter \\lambda. For generic \\lambda the solution is singular, but it is regular when \\lambda={-1,0,+1}. The case \\lambda=0 corresponds to the original G_2 metric, and \\lambda ={-1,...
['2001-06-05']
455
['eng']
['Clayton, M A']
['Nonlocal regularization of abelian models with spontaneous symmetry breaking']
['Particle Physics - Theory']
['gauge field theory, U(1)', 'Higgs model, abelian', 'symmetry, spontaneously broken', 'regularization, nonlocal', 'invariance, Becchi-Rouet-Stora', 'gauge boson, longitudinal', 'gauge boson, decoupling', 'form factor, nonlocal', 'quantization', 'Ward-Takahashi identity']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106025']
['We demonstrate how nonlocal regularization is applied to gauge invariant models with spontaneous symmetry breaking. Motivated by the ability to find a nonlocal BRST invariance that leads to the decoupling of longitudinal gauge bosons from physical amplitudes, we show that the original formulation of the method leads ...
['2001-06-05']
456
['eng']
['Moura, F']
['Four dimensional N=1 supersymmetrization of R^4 in superspace']
['Particle Physics - Theory']
['supersymmetry', 'superspace', 'Bianchi identity, solution', 'torsion', 'coupling constant', 'supergravity']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106023']
['We write an action, in four dimensional N=1 curved superspace, which contains a pure R^4 term with a coupling constant. Starting from the off-shell solution of the Bianchi identities, we compute the on-shell torsions and curvatures with this term. We show that their complete solution includes, for some of them, an in...
['2001-06-05']
457
['eng']
['Bars, Itzhak']
['2T-Physics 2001']
['Particle Physics - Theory']
['lectures, Karpacz 2001/02/06', 'lectures, Santa Barbara 2001/01/29', 'time, 2', 'particle, spinless', 'spin', 'supersymmetry', 'symmetry, Sp(2,R)', 'field theory, noncommutative', 'space-time, higher-dimensional']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106021']
['The physics that is traditionally formulated in one--time-physics (1T-physics) can also be formulated in two-time-physics (2T-physics). The physical phenomena in 1T or 2T physics are not different, but the spacetime formalism used to describe them is. The 2T description involves two extra dimensions (one time and one...
['2001-06-05']
458
['eng']
['Naculich, S G', 'Schnitzer, H J', 'Wyllard, N']
['1/N corrections to anomalies and the AdS/CFT correspondence for orientifolded N=2 orbifold models and N=1 conifold models']
['Particle Physics - Theory']
['field theory, conformal', 'anomaly, chiral', 'expansion 1/N', 'string model', 'orbifold', 'conifold', 'membrane model', 'supergravity', 'space-time, anti-de Sitter']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106020']
['We show that for a large class of d=4 N=2 conformal field theories the 1/N correction to the chiral anomaly of the U(1) R-current can be shown to arise from the D7-branes present in the dual orientifolded orbifold string theories, generalizing a result in the literature for the simplest case. We also study the U(1)_R...
['2001-06-05']
459
['eng']
['Bozza, Valerio', 'Gasperini, M', 'Veneziano, Gabriele']
['Localization of Scalar Fluctuations in a Dilatonic Brane-World Scenario']
['Particle Physics - Theory']
['membrane model', 'dilaton', 'fluctuation, scalar', 'dimension, 5', 'symmetry, Z(2)', 'field theory, scalar', 'field theory, tensor']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106019']
['We derive and solve the full set of scalar perturbation equations for a class of $Z_2$-symmetric five-dimensional geometries generated by a bulk cosmological constant and by a 3-brane non-minimally coupled to a bulk dilaton field. The massless scalar modes, like their tensor analogues, are localized on the brane, and...
['2001-06-05']
460
['eng']
['Lubo, M']
['Maximally localized states and causality in non commutative quantum theories']
['Particle Physics - Theory']
['operator, algebra', 'causality', 'quantum mechanics, noncommutative', 'dimension, 3', 'dimension, 4', 'commutation relations, representation', 'field theory']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106018']
["We give simple representations of the operator algebra of quantum theories whose position commutators are non vanishing constants. A particular representation reproduces results found using the Moyal star product. The notion of exact localization being meaningless in these theories, we adapt the notion of ``maximally...
['2001-06-05']
461
['eng']
['Leonidas, S']
['The one loop measure in the Group Theoretic approach to String Theory']
['Particle Physics - Theory']
['string model', 'group theory', 'measure', 'fixed point', 'scattering amplitude']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106017']
['The measure for the one loop scattering of one and $N$ bosonic strings is calculated using the Group Theoretic approach to String Theory. The calculation is done for the case when the projective transformation associated with the loop can be parametrized in terms of two finite fixed points and the multiplier.']
['2001-06-05']
462
['eng']
['Karabali, Dimitra', 'Sakita, Bunji']
['Chern-Simons matrix model']
['Particle Physics - Theory']
['matrix model', 'Chern-Simons term', 'coherent state', 'wave function', 'Hall effect']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106016']
['We present two coherent state representations for the Chern-Simons matrix model proposed by Polychronakos and compare the resulting probability distributions to the Laughlin ones. We find that there is agreement on the long distance behavior, but the short distance behavior is different.']
['2001-06-05']
463
['eng']
['Semenoff, Gordon W', 'Zarembo, K']
['More exact predictions of SUSYM for string theory']
['Particle Physics - Theory']
['string model', 'supersymmetry', 'operator, chiral', 'gauge field theory, Yang-Mills', 'Wilson loop', 'radiative correction', 'operator product expansion']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106015']
["We compute the coefficients of an infinite family of chiral primary operators in the local operator expansion of a circular Wilson loop in N=4 supersymmetric Yang-Mills theory. The computation sums all planar rainbow Feynman graphs. We argue that radiative corrections from planar graphs with internal vertices cancel ...
['2001-06-05']
464
['eng']
['Graña, M', 'Polchinski, Joseph']
['Gauge/Gravity Duals with Holomorphic Dilaton']
['Particle Physics - Theory']
['membrane model, D-brane', 'supersymmetry', 'dilaton', 'gauge field theory', 'supergravity', 'duality', 'moduli space', 'bibliography']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106014']
['We consider configurations of D7-branes and whole and fractional D3-branes with N=2 supersymmetry. On the supergravity side these have a warp factor, three-form flux and a nonconstant dilaton. We discuss general IIB solutions of this type and then obtain the specific solutions for the D7/D3 system. On the gauge side ...
['2001-06-05']
465
['eng']
['Bars, Itzhak']
['U*(1,1) Noncommutative Gauge Theory As The Foundation of 2T-Physics in Field Theory']
['Particle Physics - Theory']
['gauge field theory, noncommutative', 'time, 2', 'gauge field theory, U(1,1)', 'field equations, nonlinear', 'matrix model']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106013']
['A very simple field theory in noncommutative phase space X^{M},P^{M} in d+2 dimensions, with a gauge symmetry based on noncommutative u*(1,1), furnishes the foundation for the field theoretic formulation of Two-Time Physics. This leads to a remarkable unification of several gauge principles in d dimensions, including...
['2001-09-14']
466
['eng']
['Mateos, D', 'Townsend, P']
['Supergravity Supertubes']
['Particle Physics - Theory']
['supergravity', 'string model', 'supersymmetry', 'membrane model, D-brane', 'dimension, 11', 'causality']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106012']
['We find the asymptotic supergravity solution sourced by a supertube: a 1/4-supersymmetric D0-charged IIA superstring that has been blown up to a cylindrical D2-brane by angular momentum. It has no net D2-brane charge but does have a D2-brane dipole moment. It also has closed timelike curves in the dipole region, whic...
['2001-06-04']
467
['eng']
['Polychronakos, A P']
['Quantum Hall states on the cylinder as unitary matrix Chern-Simons theory']
['Particle Physics - Theory']
['Hall effect, fractional', 'Chern-Simons term', 'matrix model', 'space, cylinder', 'holography', 'fluid, magnetic', 'Calogero-Sutherland model', 'quantization', 'coherent state']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106011']
['We propose a unitary matrix Chern-Simons model representing fractional quantum Hall fluids of finite extent on the cylinder. A mapping between the states of the two systems is established. Standard properties of Laughlin theory, such as the quantization of the inverse filling fraction and of the quasiparticle number,...
['2001-06-04']
468
['eng']
['Rastelli, L', 'Sen, A', 'Zwiebach, B']
['Vacuum String Field Theory']
['Particle Physics - Theory']
['talk, Mumbai 2001/01/05', 'field theory, string', 'vacuum state', 'tachyon', 'membrane model, D-brane', 'field theory, conformal']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106010']
['This is a brief review of vacuum string field theory, a new approach to open string field theory based on the stable vacuum of the tachyon. We discuss the sliver state explaining its role as a projector in the space of half-string functionals. We review the construction of D-brane solutions in vacuum string field the...
['2001-06-04']
469
['eng']
['Nasir, S', 'Niemi, Antti J']
['Field Theories from Bundles of Strings']
['Particle Physics - Theory']
['boson, string model', 'bound state', 'soliton', 'knot theory', 'transformation, gauge', 'transformation, U(1)', 'energy', 'Skyrme model', 'gauge field theory, Yang-Mills', 'torsion']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106009']
['We propose that at low energy four dimensional bosonic strings may form bound states where they become bundled together much like the filaments in a cable. We inspect the properties of these bundles in terms of their extrinsic geometry. This involves both torsion and curvature contributions, and leads to four dimensi...
['2001-06-04']
470
['eng']
['Ng, S', 'Perry, M']
['Brane Splitting via Quantum Tunneling']
['Particle Physics - Theory']
['supergravity', 'dimension, 11', 'space-time, anti-de Sitter', 'path integral, Euclidean', 'instanton', 'tunneling', 'field theory, conformal', 'supersymmetry', 'membrane model', 'regularization']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106008']
['We study the two-centred AdS_7 x S^4 solution of eleven-dimensional supergravity using the Euclidean path-integral approach, and find that it can be interpreted as an instanton, signalling the splitting of the throat of the M5 brane. The instanton is interpreted as indicating a coherent superposition of the quantum s...
['2001-06-04']
471
['eng']
['De la Cruz, F A', 'Rosales, J J', 'Tkach, V I']
['Susy Cosmological Models']
['Particle Physics - Theory']
['astrophysics, model', 'supersymmetry, symmetry breaking', 'field theory, scalar', 'space-time, Robertson-Walker', 'potential', 'supersymmetry, conformal', 'astrophysics, wave function']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106007']
['In this work we consider the action for a set of complex scalar supermultiplets interacting with the scale factor in the supersymmetric cosmological models. We show that the local conformal supersymmetry leads to a scalar field potential defined in terms of the K\\"ahler potential and superpotential. Using supersymme...
['2001-06-04']
472
['eng']
['Acatrinei, C S']
['Noncommutative radial waves']
['Particle Physics - Theory']
['field theory, scalar', 'field theory, noncommutative', 'dimension, 3', 'field equations, solution']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106006']
['We study radial waves in (2+1)-dimensional noncommutative scalar field theory, using operatorial methods. The waves propagate along a discrete radial coordinate and are described by finite series deformations of Bessel-type functions. At large radius with respect to the noncomutativity scale $\\theta$, the waves beha...
['2001-06-04']
473
['eng']
['Giveon, Amit', 'Kutasov, D', 'Schwimmer, A']
['Comments on D-branes in $AdS_3$']
['Particle Physics - Theory']
['string model', 'space-time, anti-de Sitter', 'field equations, solution', 'algebra, SL(2)', 'algebra, affine', 'algebra, representation', 'membrane model, D-brane', 'vacuum state', 'bootstrap', 'operator, vertex', 'boundary condition', 'fluctuation', 'analytic properties']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106005']
['We study D-branes that preserve a diagonal SL(2) affine Lie algebra in string theory on $AdS_3$. We find three classes of solutions, corresponding to the following representations of SL(2): (1) degenerate, finite dimensional representations with half integer spin, (2) principal continuous series, (3) principal discre...
['2001-06-04']
474
['eng']
['Giveon, Amit', 'Kutasov, D']
['Notes on $AdS_3$']
['Particle Physics - Theory']
['space-time, anti-de Sitter', 'dimension, 3', 'field theory, conformal', 'field theory, Liouville', 'dimension, 2', 'Wess-Zumino-Witten model, SU(2)/U(1)', 'operator product expansion', 'n-point function', 'supersymmetry', 'algebra, Virasoro']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106004']
['We use the conjectured strong-weak coupling worldsheet duality between the $SL(2)/U(1)$ and Sine-Liouville conformal field theories to study some properties of degenerate operators and to compute correlation functions in CFT on $AdS_3$. The same quantities have been computed in the past by other means. The agreement ...
['2001-06-04']
475
['eng']
['Fairlie, David B']
['The Multi-field Complex Bateman Equation']
['Particle Physics - Theory']
['Bateman equation', 'string model', 'membrane model']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106003']
['The multi-field generalisation of the Bateman equation arises from considerations of the continuation of String and Brane equations to the case where the base space is of higher dimension than the target space. The complex extension of this equation possesses a remarkably large invariance group, and admits a very sim...
['2001-06-04']
476
['eng']
['Huang, W H']
['Boundary String Field Theory Approach to High-Temperature Tachyon Potential']
['Particle Physics - Theory']
['field theory, string', 'tachyon, potential', 'tachyon, condensation', 'finite temperature']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106002']
['The boundary string field theory approach is used to evaluate the one-loop tachyon potential. With the choice of symmetry boundary condition at the two boundaries on annulus diagram the exact form of corrected potentials at zero and high temperature are obtained. The profile of the tachyon potential is found to be te...
['2001-06-04']
477
['eng']
['Deffayet, C', 'Dvali, G', 'Gabadadze, Gregory T', 'Vainshtein, A I']
['Nonperturbative Continuity in Graviton Mass versus Perturbative Discontinuity']
['Particle Physics - Theory']
['gravitation', 'field theory, action', 'graviton, mass', 'dependence, gauge', 'Einstein equation, solution', 'dimension, 4', 'dimension, 5']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0106001']
['We address the question whether a graviton could have a small nonzero mass. The issue is subtle for two reasons: there is a discontinuity in the mass in the lowest tree-level approximation, and, moreover, the nonlinear four-dimensional theory of a massive graviton is not defined unambiguously. First, we reiterate the...
['2001-06-04']
478
['eng']
['Dick, R']
['Brane worlds']
['Particle Physics - Theory']
['review', 'gravitation, action', 'membrane model, p-brane', 'p-brane, 3', 'space-time, higher-dimensional', 'Einstein equation', 'Randall-Sundrum model', 'black hole', 'Friedman model', 'space-time, Robertson-Walker', 'bibliography']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105320']
['This is an introductory review of gravity on branes with an emphasis on codimension 1 models. However, for a new result it is also pointed out that the cosmological evolution of the 3-brane in the model of Dvali, Gabadadze and Porrati may follow the standard Friedmann equation. Contents: 1. Introduction 2. Convention...
['2001-06-01']
479
['eng']
['Kluson, J']
["Some Remarks About Berkovits' Superstring Field Theory"]
['Particle Physics - Theory']
['string model', 'supersymmetry', 'field theory, action', 'field theory, fluctuation', 'operator, Becchi-Rouet-Stora', 'Wess-Zumino-Witten model']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105319']
['In this short note we would like to discuss general solutions of the Berkovits superstring field theory, in particular the string field action for fluctuation around such a solution. We will find that fluctuations obey the same equation of motion as the original field with the new BRST operator. Then we will argue th...
['2001-06-01']
480
['eng']
['De la Cruz, F A', 'Tkach, V I']
['Trace anomaly for 4D higher derivative scalar-dilaton theory']
['Particle Physics - Theory']
['field theory, scalar', 'field theory, action', 'derivative, high', 'dilaton', 'anomaly, conformal', 'effective action', 'perturbation theory, higher-order']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105318']
['Trace anomaly for conformally invariant higher derivative 4D scalar-dilaton theory is obtained by means of calculating divergent part of one-loop effective action for such system. Its applications are briefly mentioned']
['2001-06-01']
481
['eng']
['Jacob, P', 'Mathieu, P']
['Single-channel correlators and residue calculus']
['Particle Physics - Theory']
['correlation function', 'field theory, conformal', 'model, minimal', 'fermion, parastatistics', 'operator product expansion', 'tensor, energy-momentum', 'algebra, Virasoro']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105317']
['Some simple (namely, single-channel) correlation functions involving an arbitrary number of fields are computed by means of a direct application of the residue calculus, through partial fraction expansions. Examples are presented in minimal models and parafermionic conformal theories. A generic factorized expression ...
['2001-06-01']
482
['eng']
['Berg, M', 'Cartier, P']
['Representations of the Renormalization Group as Matrix Lie Algebra']
['Particle Physics - Theory']
['renormalization group, representation', 'algebra, Lie', 'algebra, matrix', 'renormalization group, transformation', 'perturbation theory, higher-order']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105315']
["Renormalization is cast in the form of a Lie algebra of matrices. By exponentiation, these matrices generate counterterms for Feynman diagrams with subdivergences. The matrices are triangular, and in general infinite. As representations of an insertion operator, the matrices provide explicit representations of the Co...
['2001-06-01']
483
['eng']
['Carrion, H L', 'Rojas, M', 'Toppan, F']
['An N=8 Superaffine Malcev Algebra and Its N=8 Sugawara']
['Particle Physics - Theory']
['algebra, Malcev', 'algebra, affine', 'supersymmetry', 'octonion']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105313']
['A supersymmetric affinization of the algebra of octonions is introduced. It satisfies a super-Malcev property and is N=8 supersymmetric. Its Sugawara construction recovers, in a special limit, the non-associative N=8 superalgebra of Englert et al. This paper extends to supersymmetry the results obtained by Osipov in ...
['2001-09-14']
484
['eng']
['Hashimoto, K', 'Ooguri, H']
['Seiberg-Witten Transforms of Noncommutative Solitons']
['Particle Physics - Theory']
['gauge field theory, U(N)', 'supersymmetry', 'Seiberg-Witten model', 'geometry, algebra', 'membrane model, D-brane', 'membrane model, p-brane', 'differential geometry, noncommutative', 'soliton, BPS', 'instanton', 'bibliography']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105311']
['We evaluate the Seiberg-Witten map for solitons and instantons in noncommutative gauge theories in various dimensions. We show that solitons constructed using the projection operators have delta-function supports when expressed in the commutative variables. This gives a precise identification of the moduli of these s...
['2001-05-31']
485
['eng']
['Klinkhamer, F R', 'Mayer, C']
['Torsion and CPT anomaly in two-dimensional chiral U(1) gauge theory']
['Particle Physics - Theory']
['gauge field theory, U(1)', 'field theory, chiral', 'dimension, 2', 'anomaly, CPT', 'torsion', 'space-time', 'differential geometry', 'path integral, determinant']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105310']
['We consider the CPT anomaly of two-dimensional chiral U(1) gauge theory on a torus with topologically nontrivial zweibeins corresponding to the presence of torsion. The resulting chiral determinant can be expressed in terms of the standard chiral determinant without torsion, but with modified spinor boundary conditio...
['2001-05-31']
486
['eng']
['Aharony, O', 'Berkooz, M', 'Silverstein, E']
['Multiple-Trace Operators and Non-Local String Theories']
['Particle Physics - Theory']
['gauge field theory, SU(N)', 'n-point function', 'operator product expansion', 'expansion 1/N', 'field theory, anti-de Sitter', 'field theory, conformal', 'field theory, deformation', 'string model, nonlocal']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105309']
['We propose that a novel deformation of string perturbation theory, involving non-local interactions between strings, is required to describe the gravity duals of field theories deformed by multiple-trace operators. The new perturbative expansion involves a new parameter, which is neither the string coupling nor the c...
['2001-05-31']
487
['eng']
['Bonora, L', 'Salizzoni, M']
['Non-orientable string one-loop corrections in the presence of a B field']
['Particle Physics - Theory']
['string model, open', 'scattering amplitude, higher-order', 'Riemann surfaces', 'boundary condition', 'field theory, tensor', 'gauge field theory, SO(N)', 'differential geometry, noncommutative', 'bibliography']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105307']
['We propose an expression for the string propagator on the boundary of the Moebius strip in the presence of a constant B field. We use it to compute the one-loop corrections to two-, three- and four-gluon amplitudes in an open string theory with orthogonal Chan-Paton factors. We show that these corrections in the fiel...
['2001-05-31']
488
['eng']
['Jorjadze, G P', 'Weigt, G']
['Poisson Structure and Moyal Quantisation of the Liouville Theory']
['Particle Physics - Theory']
['field theory, Liouville', 'Wess-Zumino-Witten model, SL(2,R)', 'differential forms, symplectic', 'Poisson bracket', 'quantization, Moyal', 'field theory, chiral', 'algebra, exchange']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105306']
['The symplectic and Poisson structures of the Liouville theory are derived from the symplectic form of the SL(2,R) WZNW theory by gauge invariant Hamiltonian reduction. Causal non-equal time Poisson brackets for a Liouville field are presented. Using the symmetries of the Liouville theory, symbols of chiral fields are...
['2001-05-31']
489
['eng']
['De Boer, J', 'Halpern, M B', 'Obers, N A']
['The Operator Algebra and Twisted KZ Equations of WZW Orbifolds']
['Particle Physics - Theory']
['field theory, conformal', 'dimension, 2', 'Wess-Zumino-Witten model', 'orbifold', 'operator, vertex', 'operator, algebra', 'algebra, representation', 'duality, transformation', 'operator product expansion', 'Knizhnik-Zamolodchikov equation']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105305']
['We obtain the operator algebra of each twisted sector of all WZW orbifolds, including the general twisted current algebra and the algebra of the twisted currents with the twisted affine primary fields. Surprisingly, the twisted right and left mover current algebras are not a priori copies of each other. Using the ope...
['2001-05-31']
490
['eng']
['Boos, E E', 'Kubyshin, Yu A', 'Smolyakov, M N', 'Volobuev, I']
['Effective Lagrangians for linearized gravity in Randall-Sundrum model']
['Particle Physics - Theory']
['Randall-Sundrum model', 'gravitation, linear', 'effective Lagrangian', 'membrane model', 'mass spectrum', 'matter, coupling', 'fluctuation', 'transformation, gauge', 'dimension, 5']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105304']
['We construct the second variation Lagrangian for Randall-Sundrum model with two branes, study its gauge invariance, find the corresponding equations of motion and decouple them. We also derive an effective Lagrangian for this model in the unitary gauge, which describes a massless graviton, massive gravitons and a mas...
['2001-05-31']
491
['eng']
['Chan, G']
['Prepotential Recursion Relations in N=2 Super Yang-Mills with Adjoint Matter']
['Particle Physics - Theory']
['gauge field theory, SU(N)', 'supersymmetry, multiplet', 'instanton, effect', 'perturbation theory', 'S-duality', 'Seiberg-Witten model', 'geometry, algebra', 'prepotential', 'Calogero-Moser model']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105302']
['Linear recursion relations for the instanton corrections to the effective prepotential are derived for N=2 supersymmetric gauge theories with one hypermultiplet in the adjoint representation of SU(N) using the Calegro-Moser parameterization of the Seiberg-Witten spectral curves. S-duality properties of the Calegro-Mo...
['2001-05-31']
492
['eng']
["D'Urríes, F J", 'Julve, J', 'Villaseñor, E J S']
['Higher-Derivative Boson Field Theories and Constrained Second-Order Theories']
['Particle Physics - Theory']
['field theory, scalar', 'field theory, action', 'derivative, high', 'electromagnetic field', 'gravitation', 'constraint']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105301']
["As an alternative to the covariant Ostrogradski method, we show that higher-derivative relativistic Lagrangian field theories can be reduced to second differential-order by writing them directly as covariant two-derivative theories involving Lagrange multipliers and new fields. Despite the intrinsic non-covariance of...
['2001-05-31']
493
['eng']
['Nojiri, S', 'Obregón, O', 'Odintsov, S D']
['Cosmological constant and Brane New World']
['Particle Physics - Theory']
['astrophysics, fundamental constant', 'membrane model', 'inflationary universe', 'space-time, anti-de Sitter', 'derivative, high', 'gauge field theory, Yang-Mills', 'supersymmetry', 'dimension, 5']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105300']
['The estimation of the cosmological constant in inflationary Brane New World models is done. It is shown that basically it is quite large, of the same order as in anomaly-driven inflation. However, for some fine-tuning of bulk gravitational constant and AdS scale parameter $l^2$ it may be reduced to sufficiently small...
['2001-05-31']
494
['eng']
['Marolf, D M', 'Silva, P J']
['Polarization of the D0 ground state in Quantum Mechanics and Supergravity']
['Particle Physics - Theory']
['quantum mechanics', 'supergravity', 'membrane model', 'ground state, polarization', 'M-theory', 'duality', 'bound state, deformation', 'space-time, deformation', 'scaling']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105298']
["The presence of a distant D4-brane is used to further investigate the duality between M-theory and D0-brane quantum mechanics. Although the D4-brane background fields are not strong enough to induce a classical dielectric effect in the D0 system, a polarization of the quantum mechanical ground state does result. A si...
['2001-05-31']
495
['eng']
['Brito, F A', 'Bazeia, D']
['Network of Domain Walls on Soliton Stars']
['Particle Physics - Theory']
['soliton, matter', 'domain wall, network', 'fermion, zero mode', 'star, stability', 'star, charge', 'field theory, scalar']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105296']
['We explore the idea of a network of domain walls to appear on the surface of a soliton star. For a suitable fine tuning among the parameters of the model used, one can find localized fermion zero modes only on the network. In this scenario the soliton star gets unstable and decays in free particle before the cold mat...
['2001-05-30']
496
['eng']
['Gardner, C L']
['Primordial Inflation and Present-Day Cosmological Constant from Extra Dimensions']
['Particle Physics - Theory']
['inflationary universe', 'astrophysics, fundamental constant', 'gravitation, quasiclassical', 'dimension, 6', 'dark energy, density']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105295']
['A semiclassical gravitation model is outlined which makes use of Casimir vacuum energy fluctuations in extra compactified dimensions to produce the present-day dark energy density. The model is based on (4+D)-dimensional gravity, with D = 2 extra dimensions with radius b(t) curled up at the ADD length scale b0 ~ 0.1 ...
['2001-05-30']
497
['eng']
['Rasmussen, J', 'Walton, M A']
['On the level-dependence of Wess-Zumino-Witten three-point functions']
['Particle Physics - Theory']
['field theory, conformal', 'dimension, 2', 'Wess-Zumino-Witten model, SU(3)', 'Wess-Zumino-Witten model, SU(4)', 'n-point function, 3', 'Ward identity', 'operator, algebra', 'algebra, fusion', 'fusion, multiplicity']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105294']
['Three-point functions of Wess-Zumino-Witten models are investigated. In particular, we study the level-dependence of three-point functions in the models based on algebras $su(3)$ and $su(4)$. We find a correspondence with Berenstein-Zelevinsky triangles. Using previous work connecting those triangles to the fusion mu...
['2001-05-30']
498
['eng']
['Flanagan, E E', 'Hill, R J', 'Jones, N', 'Tye, S H Henry']
['Probe Brane Dynamics and the Cosmological Constant']
['Particle Physics - Theory']
['membrane model, stability', 'astrophysics, fundamental constant', 'dimension, 5', 'dimension, 4', 'radion']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105293']
['Recently a brane world perspective on the cosmological constant and the hierarchy problems was presented. Here, we elaborate on some aspects of that particular scenario and discuss the stability of the stationary brane solution and the dynamics of a probe brane. Even though the brane is unstable under a small perturb...
['2001-05-30']
499
['eng']
['Axenides, M', 'Floratos, Emmanuel G', 'Perivolaropoulos, L']
['Quadrupole Instabilities of Relativistic Rotating Membranes']
['Particle Physics - Theory']
['membrane model, stability', 'membrane, rotational', 'deformation, multipole', 'zero mode']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=0105292']
['We generalize recent study of the stability of isotropic (spherical) rotating membranes to the anisotropic ellipsoidal membrane. We find that while the stability persists for deformations of spin $l=1$, the quadrupole and higher spin deformations ($l\\geq 2$) lead to instabilities. We find the relevant instability mo...
['2001-05-30']