id large_stringlengths 9 16 | title large_stringlengths 1 382 | abstract large_stringlengths 3 6.09k | publish_date date32 | update_date date32 | categories large listlengths 1 13 | authors large_stringlengths 3 62.8k |
|---|---|---|---|---|---|---|
hep-th/9205067 | Discussion of Self-Dual c=24 Conformal Field Theories | We discuss questions arising from the recent work of Schellekens, and also
from an earlier paper by Schellekens and Yankielowicz. We summarise
Schellekens' results, and proceed to discuss the uniqueness of the c=24
self-dual conformal field theory with no weight one states, i.e. the Monster
module $V^\natural$. After i... | 1992-05-19 | 2008-02-03 | [
"hep-th"
] | P.Montague |
hep-th/9205068 | ERRATA for "One-Loop Threshold Effects in String Unification" | The original paper, as published in Nuclear Physics B in 1988, had a few
factor-of-two errors. Some people got confused by those errors. The purpose of
these errata is to make things clear. The revised version of the complete
article is also posted to hep-th. | 1992-05-19 | 2007-05-23 | [
"hep-th"
] | Vadim Kaplunovsky |
hep-th/9205069 | Quantization of a Theory of 2d Dilaton Gravity | We discuss the quantization of the 2d gravity theory of Callan, Giddings,
Harvey, and Strominger (CGHS), following the procedure of David, and of Distler
and Kawai. We find that the physics depends crucially on whether the number of
matter fields is greater than or less than 24. In the latter case the
singularity point... | 1992-05-19 | 2009-10-22 | [
"hep-th"
] | S.P. de Alwis |
hep-th/9205070 | One-Loop Threshold Effects in String Unification | Like grand unification of old, string unification predicts simple tree-level
relations between the couplings of all unbroken gauge groups such as $SU(3)_C$
or $SU(2)_W\)$. I show here how to compute one-loop corrections to these
relations for any four-dimensional model based on a classical vacuum of the
heterotic strin... | 1992-05-19 | 2016-09-06 | [
"hep-th"
] | Vadim Kaplunovsky |
hep-th/9205065 | The operator algebra of the discrete state operators in 2D gravity with
non-vanishing cosmological constant | Remarks are given to the structure of physical states in 2D gravity coupled
to $C\leq 1$ matter. The operator algebra of the discrete state operators is
calculated for the theory with non-vanishing cosmological constant. | 1992-05-19 | 2011-04-15 | [
"hep-th"
] | Vl.S.Dotsenko |
hep-th/9205063 | A Study of Two Dimensional String Theory (PhD Thesis) | This thesis is a study of two dimensional noncritical string theory. The main
tool which is used, is the matrix model. Introductions to both the Liouville
model and its matrix model formulation are included. In particular the special
states are discussed. Some calculations of partition functions on genus one
using fiel... | 1992-05-18 | 2007-05-23 | [
"hep-th"
] | Ulf H. Danielsson |
hep-th/9205058 | A class of finite two - dimensional sigma models and string vacua | We consider a two - dimensional Minkowski signature sigma model with a $2+N$
- dimensional target space metric having a null Killing vector. It is shown
that the model is finite to all orders of the loop expansion if the dependence
of the ``transverse" part of the metric $\ggij (u,x)$ on the light cone
coordinate $u$ i... | 1992-05-18 | 2009-09-17 | [
"hep-th"
] | A.A. Tseytlin |
hep-th/9205057 | New Methods of Integration in Matrix Models | We discuss a new method of integration over matrix variables based on a
suitable gauge choice in which the angular variables decouple from the
eigenvalues at least for a class of two-matrix models. The calculation of
correlation functions involving angular variables is simple in this gauge.
Where the method is applicab... | 1992-05-18 | 2010-04-06 | [
"hep-th"
] | A.D'Adda |
hep-th/9205061 | Quantum-Mechanical Scattering of Charged Black Holes | We describe the quantum mechanical scattering of slowly moving maximally
charged black holes. Our technique is to develop a canonical quantization
procedure on the parameter space of possible static classical solutions. With
this, we compute the capture cross sections for the scattering of two black
holes. Finally, we ... | 1992-05-18 | 2011-04-20 | [
"hep-th"
] | Jennie Traschen and Robert Ferrel |
hep-th/9205064 | The Quantum Double in Integrable Quantum Field Theory | Various aspects of recent works on affine quantum group symmetry of
integrable 2d quantum field theory are reviewed and further clarified. A
geometrical meaning is given to the quantum double, and other properties of
quantum groups. Multiplicative presentations of the Yangian double are
analyzed. | 1992-05-18 | 2008-11-26 | [
"hep-th"
] | D. Bernard and A. LeClair |
hep-th/9205060 | Cosmological Implications of Domain Walls due to Duality Invariant
Moduli Sector of Superstring Vacua | We study cosmological implications of the duality ($PSL(2,{\bf Z})$)
invariant potential for the compactification radius $T$, arising in a class of
superstring vacua. We show that in spite of having only one minimum in the
fundamental domain of the $T$ field there are two types of non-supersymmetric
domain walls: one i... | 1992-05-18 | 2009-09-17 | [
"hep-th",
"hep-ph"
] | M. Cveti\v{c} and R. L. Davis |
hep-th/9205062 | Four Dimensional Stringy Black Membrane | An exact conformal field theory describing a four dimensional singular string
background is obtained by chiral gauging a $U(1)$ subgroup along with
translations in $R$ of an $SL(2,R)\times R$ Wess-Zumino-Witten model. It is
shown that the target space-time describes a four dimensional black membrane.
Furthermore variou... | 1992-05-18 | 2009-10-22 | [
"hep-th"
] | Supriya K. Kar, S. Pratik Khastgir and Gautam Sengupta |
hep-th/9205059 | Loop Gas Model for Open Strings | The open string with one-dimensional target space is formulated in terms of
an SOS, or loop gas, model on a random surface. We solve an integral equation
for the loop amplitude with Dirichlet and Neumann boundary conditions imposed
on different pieces of its boundary. The result is used to calculate the mean
values of ... | 1992-05-18 | 2010-11-01 | [
"hep-th"
] | V. Kazakov and I. Kostov |
hep-th/9205056 | Global KdV Flows and Stable 2D Quantum Gravity | The string equation for the $[{\tilde P},Q]=Q$ formulation of
non--perturbatively stable 2D quantum gravity coupled to the $(2m-1,2)$ models
is studied. Global KdV flows between the appropriate solutions are considered
as deformations of two compatible linear problems. It is demonstrated that the
necessary conditions f... | 1992-05-16 | 2011-07-19 | [
"hep-th"
] | Clifford V.Johnson, Tim R. Morris and Anders W\"atterstam |
hep-th/9205055 | Correlation Functions of the XXZ model for $\Delta<-1$ | A new approach to the correlation functions is presented for the XXZ model in
the anti-ferroelectric regime. The method is based on the recent realization of
the quantum affine symmetry using vertex operators. With the aid of a boson
representation for the latter, an integral formula is found for correlation
functions ... | 1992-05-16 | 2016-09-06 | [
"hep-th",
"nlin.SI",
"solv-int"
] | Michio Jimbo, Kei Miki, Tetsuji Miwa, Atsushi Nakayashiki |
hep-th/9205053 | A Non Degenerate Semi-Classical Lagrangian for Dilaton-Gravity in Two
Dimensions | An action for two dimensional gravity conformally coupled to two dilaton-type
fields is analysed. Classically, the theory has some exact solutions. These
include configurations representing black holes. A semi-classical theory is
obtained by assuming that these singular solutions are caused by the collapse
of some matt... | 1992-05-15 | 2010-11-01 | [
"hep-th"
] | Noureddine Mohammedi |
hep-th/9205050 | Effective potential and stability of the rigid membrane | The calculation of the effective potential for fixed-end and toroidal rigid
$p$-branes is performed in the one-loop as well as in the $1/d$ approximations.
The analysis of the involved zeta-functions (of inhomogeneous Epstein type)
which appear in the process of regularization is done in full detail.
Assymptotic formul... | 1992-05-15 | 2009-09-17 | [
"hep-th"
] | E. Elizalde and S.D. Odintsov (Department E.C.M., Faculty of Physics,
University of Barcelona, Spain) |
hep-th/9205047 | Renormalization group equations in curved space-time with non-trivial
Topology | Renormalization group equations for massless GUT's in curved space-time with
non-trivial topology are formulated. The asymptotics of the effective action
both at high and low energies are obtained. It is shown that the Casimir energy
contribution at high curvature (early Universe) becomes non-essential in the
effective... | 1992-05-15 | 2009-10-22 | [
"hep-th"
] | E. Elizalde and S.D. Odintsov (Department E.C.M., Faculty of Physics,
University of Barcelona, Spain) |
hep-th/9205048 | Higher derivative quantum gravity with torsion in the conformally
Self-Dual Limit | The path integral for higher-derivative quantum gravity with torsion is
considered. Applying the methods of two-dimensional quantum gravity, this path
integral is analyzed in the limit of conformally self-dual metrics. A scaling
law for fixed-volume geometry is obtained. | 1992-05-15 | 2009-09-17 | [
"hep-th"
] | E. Elizalde and S.D.Odintsov (Department E.C.M., Faculty of Physics,
University of Barcelona, Spain) |
hep-th/9205054 | Aspects of N=2 Super-W_n Strings | We construct $N=2$ super-$W_{n+1}$ strings and obtain the complete physical
spectrum, for arbitrary $n \ge 2$. We also derive more general realisations of
the super-$W_{n+1}$ algebras in terms of $k$ commuting $N=2$ super
energy-momentum tensors and $n-k$ pairs of complex superfields, with $0\le k
\le [\ft{n+1}{2}]$. | 1992-05-15 | 2009-10-07 | [
"hep-th"
] | H.Lu, C.N. Pope, X.J. Wang and K.W. Xu |
hep-th/9205044 | Quantum Hamiltonian Reduction of Super Kac-Moody Algebra II | The quantum Hamiltonian reduction on the OSp(1,2) super Kac-Moody algebra is
described in the BRST formalism. Using a free field representation of the KM
currents, the super Kac-Moody algebra is shown to be reduced to a
superconformal one via the Hamiltonian reduction. This reduction is manifestly
supersymmetric becaus... | 1992-05-15 | 2009-10-22 | [
"hep-th"
] | T. Kuramoto |
hep-th/9205043 | High Temperature Partition Function of the Rigid String | We find that the high temperature limit of the free energy per unit length
for the rigid string agrees dimensionally with that of the QCD string (unlike
the Nambu-Goto string). The sign, and in fact the phase, do not agree. While
this may be a clue to a string theory of QCD, we note that the problem of the
fourth deriv... | 1992-05-15 | 2009-10-09 | [
"hep-th"
] | Joseph Polchinski and Zhu Yang |
hep-th/9205045 | Supersymmetric, Integrable Toda Field Theories: The B(1,1) Model | We study the two-dimensional supersymmetric Toda theory based on the Lie
superalgebra $B(1,1) \equiv Osp(3|2)$ and construct its quantum W-currents. We
also investigate the fermionic affinization of this model: we show that despite
the non-unitary form of the Lagrangian the $B^{(1)}(1,1)$ theory has a real
particle mas... | 1992-05-15 | 2009-10-22 | [
"hep-th"
] | Silvia Penati and Daniela Zanon |
hep-th/9205046 | Cosmological String Backgrounds from Gauged WZW Models | We discuss the four-dimensional target-space interpretation of bosonic
strings based on gauged WZW models, in particular of those based on the
non-compact coset space $SL(2,{\bf R})\times SO(1,1)^2 /SO(1,1)$. We show that
these theories lead, apart from the recently broadly discussed black-hole type
of backgrounds, to ... | 1992-05-15 | 2009-10-07 | [
"hep-th"
] | C. Kounnas and D. Luest |
hep-th/9205049 | Spontaneous compactification in 2D induced quantum gravity | Spontaneous compactification ---on a $R^1\times S^1$ background--- in 2D
induced quantum gravity (considered as a toy model for more fundamental quantum
gravity) is analyzed in the gauge-independent effective action formalism. It is
shown that such compactification is stable, in contradistinction to
multidimensional qu... | 1992-05-15 | 2009-09-17 | [
"hep-th"
] | E. Elizalde and S.D. Odintsov (Department E.C.M., Faculty of Physics,
University of Barcelona, Spain) |
hep-th/9205041 | Considerations of One-Modulus Calabi-Yau Compactifications: Picard-Fuchs
Equations, K\"ahler Potentials and Mirror Maps | We consider Calabi-Yau compactifications with one K\"ahler modulus. Following
the method of Candelas et al. we use the mirror hypothesis to solve the quantum
theory exactly in dependence of this modulus by performing the calculation for
the corresponding complex structure deformation on the mirror manifold. Here
the in... | 1992-05-14 | 2010-11-01 | [
"hep-th"
] | Albrecht Klemm and Stefan Theisen |
hep-th/9205040 | Partition Functions, Intertwiners and the Coxeter Element | The partition functions of Pasquier models on the cylinder, and the
associated intertwiners, are considered. It is shown that earlier results due
to Saleur and Bauer can be rephrased in a geometrical way, reminiscent of
formulae found in certain purely elastic scattering theories. This establishes
the positivity of the... | 1992-05-14 | 2015-06-26 | [
"hep-th"
] | Patrick Dorey |
hep-th/9205039 | Constant Solutions of Reflection Equations and Quantum Groups | To the Yang-Baxter equation an additional relation can be added. This is the
reflection equation which appears in various places, with or without spectral
parameter. For example, in factorizable scattering on a half-line, integrable
lattice models with non-periodic boundary conditions, non-commutative
differential geom... | 1992-05-14 | 2010-01-07 | [
"hep-th",
"nlin.SI",
"solv-int"
] | P. P. Kulish, R. Sasaki and C. Schwiebert |
hep-th/9205051 | A Multimonopole Solution in String Theory | A multimonopole solution in Yang-Mills field theory is obtained by a
modification of the 't Hooft ansatz for a four-dimensional instanton. Although
this solution has divergent action near each source, it can be used to
construct an exact finite action multimonopole solution of heterotic string
theory, in which the dive... | 1992-05-14 | 2009-10-22 | [
"hep-th"
] | Ramzi R. Khuri |
hep-th/9205038 | Recent Developments in Classical and Quantum Theories of Connections,
Including General Relativity | General relativity can be recast as a theory of connections by performing a
canonical transformation on its phase space. In this form, its (kinematical)
structure is closely related to that of Yang-Mills theory and topological field
theories. Over the past few years, a variety of techniques have been developed
to quant... | 1992-05-14 | 2008-02-03 | [
"hep-th"
] | Abhay Ashtekar |
hep-th/9205042 | A New Field Theoretic Approach to Criticality | A reorganized perturbation expansion with a propagator of soft infrared
behavior is used to study the critical behavior of the mass gap. The condition
of relativistic covariance fixes the form of the soft propagator. Finite
approximants to the correlation critical exponent can be obtained in every
order of the modified... | 1992-05-14 | 2009-10-22 | [
"hep-th",
"hep-lat"
] | Peter Suranyi |
hep-th/9205052 | Scattering of String Monopoles | In the low-velocity limit, multi-soliton solutions trace out geodesics in the
static solution manifold with distance defined by a metric on moduli space. For
the recently constructed multimonopole solutions of heterotic string theory, we
obtain a flat metric to leading order in the impact parameter. This result
agrees ... | 1992-05-14 | 2009-10-22 | [
"hep-th"
] | Ramzi R. Khuri |
hep-th/9205027 | Supersymmetry as a Cosmic Censor | In supersymmetric theories the mass of any state is bounded below by the
values of some of its charges. The corresponding bounds in case of
Schwarzschild and Reissner-Nordstr\"om black holes are known to coincide with
the requirement that naked singularities be absent. Here we investigate charged
dilaton black holes in... | 1992-05-13 | 2009-09-29 | [
"hep-th"
] | Renata Kallosh, Andrei Linde, Tom\'as Ort\'in, Amanda Peet and Antoine
Van Proeyen |
hep-th/9205031 | Topological Models on the Lattice and a Remark on String Theory Cloning | The addition of a topological model to the matter content of a conventional
closed-string theory leads to the appearance of many perturbatively-decoupled
space-time worlds. We illustrate this by classifying topological vertex models
on a triangulated surface. We comment on how such worlds could have been
coupled in the... | 1992-05-13 | 2009-10-22 | [
"hep-th"
] | Costas Bachas and Marios Petropoulos |
hep-th/9205030 | Quantum Analysis of Jackiw and Teitelboim's Model for 1+1 D Gravity and
Topological Gauge Theory | We study the BRST quantization of the 1+1 dimensional gravity model proposed
by Jackiw and Teitelboim and also the topological gauge model which is
equivalent to the gravity model at least classically. The gravity model
quantized in the light-cone gauge is found to be a free theory with a nilpotent
BRST charge. We show... | 1992-05-13 | 2009-10-22 | [
"hep-th"
] | Haruhiko Terao |
hep-th/9205035 | Sine-Gordon Solitons as Heterotic Fivebranes | The Euclidean analogues of the sine-Gordon solitons are used as sources of
the heterotic fivebrane solutions in the ten-dimensional heterotic string
theory. Some properties of these soliton solutions are discussed. These
solitons in principle can appear as string-like objects in 4-dimensional
space-time after proper co... | 1992-05-13 | 2009-10-22 | [
"hep-th"
] | HoSeong La |
hep-th/9205033 | Strong Antigravity. Life in the Shock Wave | Strong anti-gravity is the vanishing to all orders in Newton's constant of
the net force between two massive particles at rest. We study this phenomenon
and show that it occurs in any effective theory of gravity which is obtained
from a higher-dimensional model by compactification on a manifold with flat
directions. We... | 1992-05-13 | 2010-11-01 | [
"hep-th"
] | M. Fabbrichesi and K. Roland |
hep-th/9205037 | Global Analysis of New Gravitational Singularities in String and
Particle Theories | We present a global analysis of the geometries that arise in non-compact
current algebra (or gauged WZW) coset models of strings and particles
propagating in curved space-time. The simplest case is the 2d black hole. In
higher dimensions these geometries describe new and much more complex
singularities. For string and ... | 1992-05-13 | 2009-10-22 | [
"hep-th"
] | I. Bars and K. Sfetsos (USC) |
hep-th/9205036 | Solitons with integer fermion number | Necessary and sufficient conditions are found for any object in $3+1$
dimensions to have integer rather than fractional fermion number. Nontrivial
examples include the Jackiw-Rebbi monopole and the already well studied
Su-Schrieffer-Heeger soliton, both displaying integer multiples of elementary
charges in combinations... | 1992-05-13 | 2007-05-23 | [
"hep-th"
] | Alfred S. Goldhaber |
hep-th/9205028 | Fadeev-Popov Ghosts and 1+1 Dimensional Black Hole Evaporation | Recently Callan, Giddings, Harvey and the author derived a set of one-loop
semiclassical equations describing black hole formation/evaporation in
two-dimensional dilaton gravity conformally coupled to $N$ scalar fields. These
equations were subsequently used to show that an incoming matter wave develops
a black hole ty... | 1992-05-13 | 2009-09-17 | [
"hep-th"
] | Andrew Strominger |
hep-th/9205034 | Gravity-Matter Couplings from Liouville Theory | The three-point functions for minimal models coupled to gravity are derived
in the operator approach to Liouville theory which is based on its $U_q(sl(2))$
quantum group structure. The result is shown to agree with matrix-model
calculations on the sphere. The precise definition of the corresponding
cosmological constan... | 1992-05-13 | 2009-10-22 | [
"hep-th"
] | Jean-Loup Gervais |
hep-th/9205029 | Neutrino Masses within the Minimal Supersymmetric Standard Model | We investigate the possibility of accommodating neutrino masses compatible
with the MSW study of the Solar neutrino deficit within the minimal
supersymmetric Standard Model. The ``gravity-induced'' seesaw mechanism based
on an interplay of nonrenormalizable and renormalizable terms in the
superpotential allows neutrino... | 1992-05-13 | 2009-09-17 | [
"hep-th",
"hep-ph"
] | Mirjam Cvetic and Paul Langacker |
hep-th/9205032 | Restricted Supergauge invariance, N=2 Coadjoint Orbit and N=2 Quantum
Supergravity | It is shown that the N=2 superconformal transformations are restricted N=1
supergauge transformations of a supergauge theory with Osp(2,2) as a gauge
group. Based on this result, a canonical derivation of the Osp(2,2) current
algebra in the superchiral gauge formulation of N=2 supergravity is presented. | 1992-05-13 | 2009-10-22 | [
"hep-th"
] | W.A. Sabra |
hep-th/9205023 | Stability Analysis of a Stringy Black Hole | We investigate the stability of charged black holes in two-dimensional
heterotic string theories that were recently discussed by McGuidan, Nappi and
Yost. In the framework of small time-dependent perturbation, we find that these
black holes are linearly stable. | 1992-05-12 | 2019-08-15 | [
"hep-th"
] | Rue-Ron Hsu, Green Huang, Wei-Fu Lin, and Chin-Rong Lee |
hep-th/9205024 | Renormalization group trajectories from resonance factorized S-matrices | We propose and investigate a large class of models possessing resonance
factorized S-matrices. The associated Casimir energy describes a rich pattern
of renormalization group trajectories related to flows in the coset models
based on the simply laced Lie Algebras. From a simplest resonance S-matrix,
satisfying the ``$\... | 1992-05-12 | 2009-10-22 | [
"hep-th"
] | Marcio J. Martins |
hep-th/9205026 | Lorentz invariance of effective strings | Starting from a Poincar\'e invariant field theory of a real scalar field with
interactions governed by a double-well potential in 2+1 dimensions, the Lorentz
representation induced on the collective coordinates describing low-energy
excitations about an effective string background is derived. In this
representation, Lo... | 1992-05-12 | 2009-10-22 | [
"hep-th"
] | J.D. Cohn and Vipul Periwal |
hep-th/9205025 | The Gravitational Field of String Matter | We study the scattering of a massless and neutral test particle in the
gravitational field of a body (the string star) made of a large number of
scalar states of the superstring. We consider two cases, the one in which these
states are neutral string excitations massive already in ten dimensions and the
one in which th... | 1992-05-12 | 2009-10-22 | [
"hep-th"
] | M. Fabbrichesi, R. Iengo, K. Roland |
hep-th/9205021 | Statistical Mechanics of Black Holes | We analyze the statistical mechanics of a gas of neutral and charged black
holes. The microcanonical ensemble is the only possible approach to this
system, and the equilibrium configuration is the one for which most of the
energy is carried by a single black hole. Schwarzschild black holes are found
to obey the statist... | 1992-05-11 | 2009-10-22 | [
"hep-th"
] | B. Harms and Y. Leblanc |
hep-th/9205022 | Entropy vs. Action in the (2+1)-Dimensional Hartle-Hawking Wave Function | In most attempts to compute the Hartle-Hawking ``wave function of the
universe'' in Euclidean quantum gravity, two important approximations are made:
the path integral is evaluated in a saddle point approximation, and only the
leading (least action) extremum is taken into account. In (2+1)-dimensional
gravity with a ne... | 1992-05-11 | 2010-04-28 | [
"hep-th"
] | Steven Carlip |
hep-th/9205019 | Charged Topological Solitons in 4+1 Dimensional YMCS Theory | We show that when a Chern-Simons term is added to the action of $SU(N)$
($N\geq 3$) Yang-Mills theory in 5 dimensions the usual self-dual topological
solitons present in the theory necessarily pick up a (topological) electric
charge. | 1992-05-09 | 2011-02-09 | [
"hep-th"
] | C.S.Aulakh |
hep-th/9205017 | c = 1 conformal field theory and the fractional quantum Hall effect | We examine the application of $c=1$ conformal field theory to the description
of the fractional quantum Hall effect (FQHE). It is found that the Gaussian
model together with an appropriate boundary condition for the order parameter
furnishes an effective theory for the Laughlin type FQHE. The plateau formation
conditio... | 1992-05-09 | 2007-05-23 | [
"hep-th"
] | Christopher Ting and C. H. Lai |
hep-th/9205018 | Geometric Interpretation of the Quantum Master Equation in the
BRST--anti-BRST Formalism | The geometric interpretation of the antibracket formalism given by Witten is
extended to cover the anti-BRST symmetry. This enables one to formulate the
quantum master equation for the BRST--anti-BRST formalism in terms of
integration theory over a supermanifold. A proof of the equivalence of the
standard antibracket f... | 1992-05-09 | 2009-10-22 | [
"hep-th"
] | Marc Henneaux |
hep-th/9205020 | Divergences of Discrete States Amplitudes and Effective Lagrangian in 2D
String Theory | Scattering amplitudes for discrete states in 2D string theory are considered.
Pole divergences of tree-level amplitudes are extracted and residues are
interpreted as renormalized amplitudes for discrete states. An effective
Lagrangian generating renormalized amplitudes for open string is written and
corresponding Ward ... | 1992-05-08 | 2015-06-26 | [
"hep-th"
] | I.Ya.Aref'eva and A.P.Zubarev |
hep-th/9205016 | Duality and $O(d,d)$ Symmetries in String Theory | The evolution of a closed bosonic string is envisaged in the time-dependent
background of its massless modes. A duality transformation is implemented on
the spatial component of string coordinates to obtain a dual string. It is
shown that the evolution equations are manifestly $O(d,d)$ invariant. The tree
level string ... | 1992-05-08 | 2009-10-22 | [
"hep-th"
] | Jnanadeva Maharana |
hep-th/9205011 | Of CP and other Gauge Symmetries in String Theory | We argue that \CP is a gauge symmetry in string theory. As a consequence, \CP
cannot be explicitly broken either perturbatively or non-pertubatively; there
can be no non-perturbative \CP-violating parameters. String theory is thus an
example of a theory where all $\theta$ angles arise due to spontaneous \CP
violation, ... | 1992-05-07 | 2009-10-22 | [
"hep-th"
] | M. Dine, R.G. Leigh and D.A. MacIntire |
hep-th/9205013 | A Note of W-algebra Realisations | We provide a general description of realisations of W--algebras in terms of
smaller W--algebras and free fields. This is based on the definition of the
W--algebra as the commutant of a set of screening charges. This is conjectured
to be related to partial gauge-fixings in the Hamiltonian reduction model. | 1992-05-07 | 2009-10-22 | [
"hep-th"
] | G.M.T.Watts |
hep-th/9205014 | Matrix Model Perturbed by Higher Order Curvature Terms | The critical behaviour of the $D=0$ matrix model with potential perturbed by
nonlocal term generating touchings between random surfaces is studied. It is
found that the phase diagram of the model has many features of the phase
diagram of discretized Polyakov's bosonic string with higher order curvature
terms included. ... | 1992-05-07 | 2015-06-26 | [
"hep-th"
] | G.P.Korchemsky |
hep-th/9205012 | Two-loop finiteness of D=2 supergravity | We establish two-loop (on shell) finiteness of certain supergravity theories
in two dimensions. Possible implications of this result are discussed | 1992-05-07 | 2009-10-22 | [
"hep-th"
] | B. de Wit, M.T. Grisaru, E. Rabinovici, H. Nicolai |
hep-th/9205015 | Conformal Symmetry and Central Charges in 4 Dimensions | The trace anomaly of matter in curved space generates an effective action for
the conformal factor of the metric tensor in $D=4$ dimensions, analogous to the
Polyakov action for $D=2$. We compute the contributions of the
reparameterization ghosts to the central charges for $D=4$, as well as the
quantum contribution of ... | 1992-05-07 | 2009-10-22 | [
"hep-th"
] | I. Antoniadis, P.O. Mazur and E. Mottola |
hep-th/9205010 | A Proposal for $D>1$ Strings? | Using the reduced formulation of large-N Quantum Field Theories we study
strings in space-time dimensions higher than one. Some preliminary results
concerning the possible string susceptibilities and general properties of the
model are presented. | 1992-05-06 | 2007-05-23 | [
"hep-th"
] | L. Alvarez-Gaume and J.L.F. Barbon |
hep-th/9205007 | Quantum Gravity and the Algebra of Tangles | In Rovelli and Smolin's loop representation of nonperturbative quantum
gravity in 4 dimensions, there is a space of solutions to the Hamiltonian
constraint having as a basis isotopy classes of links in R^3. The physically
correct inner product on this space of states is not yet known, or in other
words, the *-algebra s... | 1992-05-05 | 2010-04-06 | [
"hep-th",
"math.QA"
] | John C. Baez |
hep-th/9205008 | Low-Energy Dynamics of Supersymmetric Solitons | In bosonic field theories the low-energy scattering of solitons that saturate
Bogomol'nyi-type bounds can be approximated as geodesic motion on the moduli
space of static solutions. In this paper we consider the analogous issue within
the context of supersymmetric field theories. We focus our study on a class of
$N=2$ ... | 1992-05-05 | 2009-10-22 | [
"hep-th"
] | Jerome P. Gauntlett |
hep-th/9205009 | Coordinate and K\"{a}hler $\sigma$-Model Anomalies and Their
Cancellation in String Effective Field Theories | We discuss the complete set of one-loop triangle graphs involving the
Yang-Mills gauge connection, the \Kahler\ connection and the $\sigma$-model
coordinate connection in the effective field theory of $(2,2)$ symmetric $Z_N$
orbifolds. That is, we discuss pure gauge, pure \Kahler\ and pure
$\sigma$-model coordinate ano... | 1992-05-05 | 2015-06-26 | [
"hep-th"
] | Gabriel Lopes Cardoso and Burt A. Ovrut |
hep-th/9205005 | Comments on Unitarity in the Antifield Formalism | It is shown that the local completeness condition introduced in the analysis
of the locality of the gauge fixed action in the antifield formalism plays also
a key role in the proof of unitarity. | 1992-05-04 | 2009-10-22 | [
"hep-th"
] | Glenn Barnich and Marc Henneaux |
hep-th/9205006 | Stabilized Quantum Gravity: Stochastic Interpretation and Numerical
Simulation | Following the reasoning of Claudson and Halpern, it is shown that
"fifth-time" stabilized quantum gravity is equivalent to Langevin evolution
(i.e. stochastic quantization) between fixed non-singular, but otherwise
arbitrary, initial and final states. The simple restriction to a fixed final
state at $t_5 \rightarrow \i... | 1992-05-04 | 2009-10-22 | [
"hep-th",
"hep-lat"
] | J. Greensite |
hep-th/9205004 | No Mirror Symmetry in Landau-Ginzburg Spectra! | We use a recent classification of non-degenerate quasihomogeneous polynomials
to construct all Landau-Ginzburg (LG) potentials for N=2 superconformal field
theories with c=9 and calculate the corresponding Hodge numbers. Surprisingly,
the resulting spectra are less symmetric than the existing incomplete results.
It tur... | 1992-05-02 | 2009-10-22 | [
"hep-th"
] | Maximilian Kreuzer and Harald Skarke |
hep-th/9205003 | Reality in the Differential Calculus on q-euclidean Spaces | The nonlinear reality structure of the derivatives and the differentials for
the euclidean q-spaces are found. A real Laplacian is constructed and reality
properties of the exterior derivative are given. | 1992-05-01 | 2009-10-22 | [
"hep-th"
] | O. Ogievetsky and B. Zumino |
hep-th/9205002 | Fusion Rules for the q-deformed Vertex Operators of U_q(sl(2)^) | We analyze the properties of the q-vertex operators of U_q(sl(2)^) introduced
by Frenkel and Reshetikhin. As the condition for the null vector decoupling, we
derive the existence condition of the q-vertex operators ( the fusion rules ). | 1992-05-01 | 2015-06-26 | [
"hep-th"
] | H. Awata and Y. Yamada |
hep-th/9205001 | Classical Isomorphisms for Quantum Groups | The expressions for the $\hat{R}$--matrices for the quantum groups
SO$_{q^2}$(5) and SO$_q$(6) in terms of the $\hat{R}$--matrices for Sp$_q$(2)
and SL$_q$(4) are found, and the local isomorphisms of the corresponding
quantum groups are established. | 1992-05-01 | 2015-06-26 | [
"hep-th"
] | Vidyut Jain and Oleg Ogievetsky |
hep-th/9204102 | A New Supersymmetric Index | We show that ${\rm Tr}(-1)^F F e^{-\beta H}$ is an index for $N$=2
supersymmetric theories in two dimensions, in the sense that it is independent
of almost all deformations of the theory. This index is related to the geometry
of the vacua (Berry's curvature) and satisfies an exact differential equation
as a function of... | 1992-04-30 | 2010-11-01 | [
"hep-th"
] | Sergio Cecotti, Paul Fendley, Ken Intriligator and Cumrun Vafa |
hep-th/9204101 | Self-Dual Chern-Simons Solitons in (2+1)-Dimensional Einstein Gravity | We consider here a generalization of the Abelian Higgs model in curved space,
by adding a Chern--Simons term. The static equations are self-dual provided we
choose a suitable potential. The solutions give a self-dual
Maxwell--Chern--Simons soliton that possesses a mass and a spin. | 1992-04-30 | 2009-10-22 | [
"hep-th"
] | Daniel Cangemi and Choonkyu Lee |
hep-th/9204103 | Validity of the Eikonal Approximation | We summarize results on the reliability of the eikonal approximation in
obtaining the high energy behavior of a two particle forward scattering
amplitude. Reliability depends on the spin of the exchanged field. For scalar
fields the eikonal fails at eighth order in perturbation theory, when it misses
the leading behavi... | 1992-04-30 | 2008-11-26 | [
"hep-th"
] | Daniel Kabat |
hep-th/9204100 | Lattice Analogues of $N=2$ Superconformal Models via Quantum Group
Truncation | We obtain lattice models whose continuum limits correspond to $N=2$
superconformal coset models. This is done by taking the well known vertex model
whose continuum limit is the $G \times G/G$ conformal field theory, and
twisting the transfer matrix and modifying the quantum group truncation. We
find that the natural or... | 1992-04-29 | 2009-10-22 | [
"hep-th"
] | Z. Maassarani, D. Nemeschansky and N.P. Warner |
hep-th/9204094 | N=2 Supersymmetry, Painleve III and Exact Scaling Functions in 2D
Polymers | We discuss in this paper various aspects of the off-critical $O(n)$ model in
two dimensions. We find the ground-state energy conjectured by Zamolodchikov
for the unitary minimal models, and extend the result to some non-unitary
minimal cases. We apply our results to the discussion of scaling functions for
polymers on a... | 1992-04-29 | 2009-10-22 | [
"hep-th"
] | P. Fendley and H. Saleur |
hep-th/9204098 | Projections of Virasoro Singular Vectors | We use recently derived explicit formulae for the Virasoro algebra's singular
vectors to give constructive proofs of three results due to Feigin and Fuchs.
The main result, which is needed for a rigorous treatment of fusion, describes
the action of the singular vectors on conformal fields. | 1992-04-29 | 2009-10-22 | [
"hep-th"
] | A. Kent |
hep-th/9204096 | On the W-hair of String Black Holes and the Singularity Problem | We argue that the infinitely many gauge symmetries of string theory provide
an infinite set of conserved (gauge) quantum numbers (W-hair) which
characterise black hole states and maintain quantum coherence, even during
exotic processes like black hole evaporation/decay. We study ways of measuring
the W-hair of spherica... | 1992-04-29 | 2007-05-23 | [
"hep-th"
] | John Ellis, N.E. Mavromatos and D.V. Nanopoulos |
hep-th/9204099 | The Black Hole in Three Dimensional Space Time | The standard Einstein-Maxwell equations in 2+1 spacetime dimensions, with a
negative cosmological constant, admit a black hole solution. The 2+1 black hole
-characterized by mass, angular momentum and charge, defined by flux integrals
at infinity- is quite similar to its 3+1 counterpart. Anti-de Sitter space
appears as... | 1992-04-29 | 2009-10-22 | [
"hep-th"
] | M\'aximo Ba\~nados, Claudio Teitelboim, and Jorge Zanelli |
hep-th/9204097 | Singular Vectors of the Virasoro Algebra | We give expressions for the singular vectors in the highest weight
representations of the Virasoro algebra. We verify that the expressions ---
which take the form of a product of operators applied to the highest weight
vector --- do indeed define singular vectors. These results explain the
patterns of embeddings amongs... | 1992-04-29 | 2009-10-22 | [
"hep-th"
] | A. Kent |
hep-th/9204095 | Physical States in G/G Models and 2d Gravity | An analysis of the BRST cohomology of the G/G topological models is performed
for the case of $A_1^{(1)}$. Invoking a special free field parametrization of
the various currents, the cohomology on the corresponding Fock space is
extracted. We employ the singular vector structure and fusion rules to
translate the latter ... | 1992-04-29 | 2019-08-15 | [
"hep-th"
] | O. Aharony, O. Ganor, N. Sochen J. Sonnenschein and S. Yankielowicz |
hep-th/9204093 | Review of W Strings | We review some of the recent developments in the construction of $W$-string
theories. These are generalisations of ordinary strings in which the
two-dimensional ``worldsheet'' theory, instead of being a gauging of the
Virasoro algebra, is a gauging of a higher-spin extension of the Virasoro
algebra---a $W$ algebra. Des... | 1992-04-28 | 2007-05-23 | [
"hep-th"
] | C.N. Pope |
hep-th/9204090 | The Physics of 2-d Stringy Spacetimes | We examine the two-dimensional spacetimes that emerge from string theory. We
find all the solutions with no tachyons, and show that the only non-trivial
solution is the black hole spacetime. We examine the role of duality in this
picture. We then explore the thermodynamics of these solutions which is
complicated by the... | 1992-04-28 | 2009-10-07 | [
"hep-th"
] | Gary W. Gibbons and Malcolm J. Perry |
hep-th/9204089 | Paragrassmann Analysis and Quantum Groups | Paragrassmann algebras with one and many paragrassmann variables are
considered from the algebraic point of view without using the Green ansatz.
Operators of differentiation with respect to paragrassmann variables and a
covariant para-super-derivative are introduced giving a natural generalization
of the Grassmann calc... | 1992-04-28 | 2008-11-26 | [
"hep-th"
] | A.T.Filippov, A.P.Isaev and A.B.Kurdikov |
hep-th/9204088 | Analysis of All Dimensionful Parameters Relevant in Gravitational
Dressing of Conformal Theories | Starting from a covariant and background independent definition of normal
ordered vertex operators we give an alternative derivation of the KPZ relation
between conformal dimensions and their gravitational dressed partners. With our
method we are able to study for arbitrary genus the dependence of N-point
functions on ... | 1992-04-28 | 2009-10-22 | [
"hep-th"
] | H. Dorn and H.-J. Otto |
hep-th/9204091 | Virasoro Representations on (Diff S1)/S1 Coadjoint Orbits | A new set of realizations of the Virasoro algebra on a bosonic Fock space are
found by explicitly computing the Virasoro representations associated with
coadjoint orbits of the form (Diff S1) / S1. Some progress is made in
understanding the unitary structure of these representations. The characters of
these representat... | 1992-04-28 | 2007-05-23 | [
"hep-th"
] | Washington Taylor IV |
hep-th/9204092 | Additional symmetries of KP, Grassmannian, and the string equation | It is well-known that solutions to the string equation are generated by
elements of Sato's Grassmannian which are invariant under action of some
differential operator. Here it is shown that this operator is nothing else than
the infinitesimal operator of the group of additional symmetries of the KdV
flow. This is done ... | 1992-04-28 | 2015-06-26 | [
"hep-th"
] | Leonid Dickey |
hep-th/9204086 | Quantum Group $\sigma$ Models | Field-theoretic models for fields taking values in quantum groups are
investigated. First we consider $SU_q(2)$ $\sigma$ model ($q$ real) expressed
in terms of basic notions of noncommutative differential geometry. We discuss
the case in which the $\sigma$ models fields are represented as products of
conventional $\sig... | 1992-04-27 | 2009-10-22 | [
"hep-th"
] | Y. Frishman, J. Lukierski and W.J. Zakrzewski |
hep-th/9204080 | Scattering in Soliton Models and the Bosonic Exchange description | We argue that the description of meson-nucleon dynamics based on the
boson-exchange approach, is compatible with the description of the nucleon as a
soliton in the nonrelativistic limit. Our arguments are based on an analysis of
the meson-soliton form factor and the exact meson-soliton and soliton-soliton
scattering am... | 1992-04-24 | 2009-10-22 | [
"hep-th"
] | Claudio Coriano', Rajesh R. Parwani, Hidenaga Yamagishi, Ismail Zahed |
hep-th/9204085 | Minimal Models from W-Constrained Hierarchies via the Kontsevich-Miwa
Transform | A direct relation between the conformal formalism for 2d-quantum gravity and
the W-constrained KP hierarchy is found, without the need to invoke
intermediate matrix model technology. The Kontsevich-Miwa transform of the KP
hierarchy is used to establish an identification between W constraints on the
KP tau function and... | 1992-04-24 | 2009-10-22 | [
"hep-th"
] | B.~Gato-Rivera and A.~M.~Semikhatov |
hep-th/9204078 | Non-Critical Strings in Robertson-Walker Space Time | I consider a D+1 dimensional nonlinear $\sigma$ model based on a possible
interpretation of the Liouville field as a physical time. The Weyl invariance
of this theory gives us restrictions for the background fields and the
parameters of the theory, e.g.\ for trivial background one obtains the known
regions for the dime... | 1992-04-24 | 2008-02-03 | [
"hep-th"
] | K. Behrndt |
hep-th/9204084 | Unitarity Relations in c=1 Liouville Theory | We consider the S-matrix of c=1 Liouville theory with vanishing cosmological
constant. We examine some of the constraints imposed by unitarity. These
completely determine (N,2) amplitudes at tree level in terms of the (N,1)
amplitudes when the plus tachyon momenta take generic values. A surprising
feature of the matrix... | 1992-04-24 | 2014-11-18 | [
"hep-th"
] | David A. Lowe |
hep-th/9204082 | The $O(n)$ model on a random surface: critical points and large order
behaviour | In this article we report a preliminary investigation of the large $N$ limit
of a generalized one-matrix model which represents an $O(n)$ symmetric model on
a random lattice. The model on a regular lattice is known to be critical only
for $-2\le n\le 2$. This is the situation we shall discuss also here, using
steepest ... | 1992-04-24 | 2009-10-22 | [
"hep-th"
] | B. Eynard and J. Zinn-Justin |
hep-th/9204081 | Signature Characters for the Virasoro Algebra | The number of ghost states at each energy level in a non-unitary conformal
field theory is encoded in the signature characters of the relevant Virasoro
algebra highest weight representations. We give expressions for these signature
characters. These results complete Friedan-Qiu-Shenker's analysis of the
Virasoro algebr... | 1992-04-24 | 2009-10-22 | [
"hep-th"
] | A. Kent |
hep-th/9204083 | Two Dimensional Gauge Theories Revisited | Topological gravity is equivalent to physical gravity in two dimensions in a
way that is still mysterious, though by now it has been proved by Kontsevich.
In this paper it is shown that a similar relation between topological and
physical Yang-Mills theory holds in two dimensions; in this case, however, the
relation can... | 1992-04-24 | 2010-04-07 | [
"hep-th"
] | Edward Witten |
hep-th/9204073 | Dynamical Topological Phase Transition in Massless Thirring Model | We study the topological nature of both isotropic and anisotropic SU(N)
Thirring model. It is shown that in the isotropic model there exists the
special point where the system lives in the topological phase and that in the
anisotropic one which is obtained by introducing two coupling constants and has
U(1) symmetry, we... | 1992-04-23 | 2007-05-23 | [
"hep-th"
] | Hiroshi Nohara |
hep-th/9204074 | Euler Hierarchies and Universal Equations | Finite Euler hierarchies of field theory Lagrangians leading to universal
equations of motion for new types of string and membrane theories and for {\it
classical} topological field theories are constructed. The analysis uses two
main ingredients. On the one hand, there exists a generic finite Euler
hierarchy for one f... | 1992-04-23 | 2009-10-22 | [
"hep-th"
] | D. B. Fairlie and J. Govaerts |
hep-th/9204075 | The Effective Lagrangian of Three Dimensional Quantum Chromodynamics | We consider the low energy limit of three dimensional Quantum Chromodynamics
with an even number of flavors. We show that Parity is not spontaneously
broken, but the global (flavor) symmetry is spontaneously broken. The low
energy effective lagrangian is a nonlinear sigma model on the Grassmannian.
Some Chern--Simons t... | 1992-04-23 | 2015-06-26 | [
"hep-th"
] | G. Ferretti, S.G.Rajeev and Z. Yang |
hep-th/9204077 | Signature Characters for A_2 and B_2 | The signatures of the inner product matrices on a Lie algebra's highest
weight representation are encoded in the representation's signature character.
We show that the signature characters of a finite-dimensional Lie algebra's
highest weight representations obey simple difference equations that have a
unique solution o... | 1992-04-23 | 2015-06-26 | [
"hep-th"
] | A. Kent and G. Watts |
hep-th/9204068 | Corner Transfer Matrices and Quantum Affine Algebras | Let H be the corner-transfer-matrix Hamiltonian for the six-vertex model in
the anti-ferroelectric regime. It acts on the infinite tensor product W = V . V
. V ....., where is the 2-dimensional irreducible representation of the quantum
affine sl(2). We observe that H is the derivation of quantum affine sl(2), and
conje... | 1992-04-23 | 2009-10-22 | [
"hep-th",
"nlin.SI",
"solv-int"
] | Omar Foda, and Tetsuji Miwa |
hep-th/9204079 | String Effective Actions and Cosmological Stability of Scalar Potentials | The cosmology of the string effective action, including one loop string
threshold corrections, is analyzed for static compactifications. The stability
of the minima of a general supersymmetry breaking potential is studied in the
presence of radiation. In particular, it is shown that the radiation bath makes
the minima ... | 1992-04-23 | 2009-10-22 | [
"hep-th"
] | Juan Garcia-Bellido and Mariano Quiros |
hep-th/9204076 | Baryons as Solitons in Three Dimensional Quantum Chromodynamics | We show that baryons of three dimensional Quantum Chromodynamics can be
understood as solitons of its effective lagrangian. In the parity preserving
phase we study, these baryons are fermions for odd $N_c$ and bosons for even
$N_c$, never anyons. We quantize the collective variables of the solitons and
there by calcula... | 1992-04-23 | 2015-06-26 | [
"hep-th"
] | G. Ferretti, S.G.Rajeev and Z. Yang |
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