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/9204064 | Diagonalization of the XXZ Hamiltonian by Vertex Operators | We diagonalize the anti-ferroelectric XXZ-Hamiltonian directly in the
thermodynamic limit, where the model becomes invariant under the action of
affine U_q( sl(2) ).
Our method is based on the representation theory of quantum affine algebras,
the related vertex operators and KZ equation, and thereby bypasses the usua... | 1992-04-22 | 2016-09-06 | [
"hep-th"
] | Brian Davies, Omar Foda, Michio Jimbo, Tetsuji Miwa and Atsushi
Nakayashiki |
hep-th/9204071 | Twistor-like superstrings with D = 3, 4, 6 target-superspace and N =
(1,0), (2,0), (4,0) world-sheet supersymmetry | We construct a manifestly $N=(4,0)$ world-sheet supersymmetric twistor-like
formulation of the $D=6$ Green-Schwarz superstring, using the principle of
double (target-space and world-sheet) Grassmann analyticity. The superstring
action contains two Lagrange multiplier terms and a Wess-Zumino term. They are
written down ... | 1992-04-22 | 2008-11-26 | [
"hep-th"
] | F. Delduc, E.Ivanov and E. Sokatchev |
hep-th/9204067 | W--Gravity and Generalized Lax Equations for (super) Toda Theory | We generalize the Lax pair and B\"acklund transformations for Toda and N=1
super Toda equations to the case of arbitrary worldsheet background geometry.
We use the fact that the Toda equations express constant curvature conditions,
which arise naturally from flatness conditions equivalent to the W--gravity
equations of... | 1992-04-22 | 2009-10-22 | [
"hep-th"
] | Kenichro Aoki and Eric D'Hoker |
hep-th/9204072 | Quantum Emission from Two-Dimensional Black Holes | We investigate Hawking radiation from two-dimensional dilatonic black holes
using standard quantization techniques. In the background of a collapsing black
hole solution the Bogoliubov coefficients can be exactly determined. In the
regime after the black hole has settled down to an `equilibrium' state but
before the ba... | 1992-04-22 | 2009-11-27 | [
"hep-th"
] | Steven B. Giddings and W.M. Nelson |
hep-th/9204069 | Ashtekar's Variables for Arbitrary Gauge Group | A generally covariant gauge theory for an arbitrary gauge group with
dimension $\geq 3$, that reduces to Ashtekar's canonical formulation of gravity
for SO(3,C), is presented. The canonical form of the theory is shown to contain
only first class constraints. | 1992-04-22 | 2010-01-06 | [
"hep-th",
"gr-qc"
] | Peter Peldan |
hep-th/9204070 | Gravitational and Schwinger model anomalies: how far can the analogy go? | We describe the most general treatment of all anomalies both for chiral and
massless Dirac fermions, in two-dimensional gravity. It is shown that for this
purpose two regularization dependent parameters are present in the effective
action. Analogy to the \sc\ model is displayed corresponding to a specific
choice of the... | 1992-04-22 | 2009-10-22 | [
"hep-th"
] | A.Smailagic, E.Spallucci |
hep-th/9204065 | Field-Antifield formalism for Anomalous Gauge Theories | An extension of the Field-Antifield formalism to treat anomalous gauge
theories with a closed, irreducible classical gauge algebra is proposed.
Introducing extra degrees of freedom, we construct the gauge transformations
for these new fields, the Wess-Zumino term and the corresponding measure. | 1992-04-21 | 2016-08-14 | [
"hep-th"
] | Joaquim Gomis and Jordi Par\'is |
hep-th/9204066 | Syncyclons or Solitonic Signals from Extra Dimensions | In theories where spacetime is a direct product of Minkowski space ($M^4$)
and a d dimensional compact space ($K^d$), there can exist topological solitons
that simultaneously wind around $R^3$ (or $R^2$ or $R^1$) in $M^4$ and the
compact dimensions. A paradigmatic non-gravitational example of such
``co-winding" soliton... | 1992-04-21 | 2011-02-09 | [
"hep-th"
] | C.S.Aulakh |
hep-th/9204060 | Landau-Ginzburg String Vacua | We investigate a class of (2,2) supersymmetric string vacua which may be
represented as Landau--Ginzburg theories with a quasihomogeneous potential
which has an isolated singularity at the origin. There are at least three
thousand distinct models in this class. All vacua of this type lead to Euler
numbers which lie in ... | 1992-04-20 | 2009-10-22 | [
"hep-th"
] | A.Klemm and R.Schimmrigk |
hep-th/9204061 | Marinari-Parisi and Supersymmetric Collective Field Theory | A field theoretic formulation of the Marinari-Parisi supersymmetric matrix
model is established and shown to be equivalent to a recently proposed
supersymmetrization of the bosonic collective string field theory. It also
corresponds to a continuum description of super-Calogero models. The
perturbation theory of the mod... | 1992-04-20 | 2007-05-23 | [
"hep-th"
] | J.P. Rodrigues and A.J. van Tonder |
hep-th/9204062 | Hawking radiation: a particle physics perspective | It has recently become fashionable to regard black holes as elementary
particles. By taking this suggestion seriously it is possible to cobble
together an elementary particle physics based estimate for the decay rate
$(\hbox{black hole})_i \to (\hbox{black hole})_f + (\hbox{massless quantum})$.
This estimate of the spo... | 1992-04-20 | 2009-10-22 | [
"hep-th"
] | Matt Visser |
hep-th/9204059 | Path-Integral for Quantum Tunneling | Path-integral for theories with degenerate vacua is investigated. The origin
of the non Borel-summability of the perturbation theory is studied. A new
prescription to deal with small coupling is proposed. It leads to a series,
which at low orders and small coupling differs from the ordinary perturbative
series by nonpe... | 1992-04-20 | 2009-10-22 | [
"hep-th"
] | Hideaki Aoyama and Arihiro Tamura |
hep-th/9204063 | Solving Virasoro Constraints on Integrable Hierarchies via the
Kontsevich-Miwa Transform | We solve Virasoro constraints on the KP hierarchy in terms of minimal
conformal models. The constraints we start with are implemented by the Virasoro
generators depending on a background charge $Q$. Then the solutions to the
constraints are given by the theory which has the same field content as the
David-Distler-Kawai... | 1992-04-20 | 2011-03-04 | [
"hep-th"
] | A.M.Semikhatov |
hep-th/9204058 | Algebraic Structures of Topological Yang-Mills Theory | We discuss the algebraic structure of the various BRST symmetries associated
with topological Yang-Mills theory as a generalization of the BRS analysis
developed for the non-Abelian anomaly in the local Yang-Mills theory. We show
that our BRST algebra leads to an extended {\it Russian formula\/} and {\it
descent equati... | 1992-04-20 | 2008-02-03 | [
"hep-th"
] | Jae-Suk Park |
hep-th/9204054 | Heisenberg XXZ Model and Quantum Galilei Group | The 1D Heisenberg spin chain with anisotropy of the XXZ type is analyzed in
terms of the symmetry given by the quantum Galilei group Gamma_q(1). We show
that the magnon excitations and the s=1/2, n-magnon bound states are determined
by the algebra. Thus the Gamma_q(1) symmetry provides a description that
naturally indu... | 1992-04-17 | 2009-10-22 | [
"hep-th"
] | F.Bonechi, E.Celeghini, R. Giachetti, E. Sorace and M.Tarlini |
hep-th/9204053 | Extra States and Symmetries in D<2 Closed String Theory | We show that there is (p-1)(p'-1) dimensional semi-relative BRST cohomology
at each non-positive ghost number in the (p,p') minimal conformal field theory
coupled to two dimensional quantum gravity. These closed string states are
related to currents and symmetry charges of `exotic' ghost number. We
investigate the symm... | 1992-04-17 | 2009-10-07 | [
"hep-th"
] | Shamit Kachru |
hep-th/9204056 | Chern-Simons Solitons, Toda Theories and the Chiral Model | The two-dimensional self-dual Chern--Simons equations are equivalent to the
conditions for static, zero-energy solutions of the $(2+1)$-dimensional gauged
nonlinear Schr\"odinger equation with Chern--Simons matter-gauge dynamics. In
this paper we classify all finite charge $SU(N)$ solutions by first
transforming the se... | 1992-04-17 | 2009-10-22 | [
"hep-th"
] | Gerald Dunne and Roman Jackiw |
hep-th/9204057 | "Peireles Substitution" and Chern-Simons Quantum Mechanics | An elementary derivation is given for the ``Peierles substitution'' used in
projecting dynamics in a strong magnetic field onto the lowest Landau level.
The projection of wavefunctions and the ordering prescription for the projected
Hamiltonian is explained. | 1992-04-17 | 2009-10-22 | [
"hep-th"
] | Gerald Dunne and Roman Jackiw |
hep-th/9204055 | Covariant Phase Space Formulation of Parametrized Field Theories | Parametrized field theories, which are generally covariant versions of
ordinary field theories, are studied from the point of view of the covariant
phase space: the space of solutions of the field equations equipped with a
canonical (pre)symplectic structure. Motivated by issues arising in general
relativity, we focus ... | 1992-04-17 | 2009-10-22 | [
"hep-th"
] | C. G. Torre |
hep-th/9204052 | Correlation functions from two-dimensional string Ward identities | We rederive the $w_\infty$ Ward identities, starting from the existence of
trivial linearized gauge invariances, and using the method of canceled
propagators in the operator formalism. Recursion relations for certain classes
of correlation functions are derived, and these correlation function are
calculated exactly. We... | 1992-04-16 | 2009-10-22 | [
"hep-th"
] | Igor R. Klebanov and Andrea Pasquinucci |
hep-th/9204051 | String amplitudes in arbitrary dimensions | We calculate gravitational dressed tachyon correlators in non critcal
dimensions. The 2D gravity part of our theory is constrained to constant
curvature. Then scaling dimensions of gravitational dressed vertex operators
are equal to their bare conformal dimensions. Considering the model as d+2
dimensional critical stri... | 1992-04-16 | 2009-10-22 | [
"hep-th"
] | S. Forste |
hep-th/9204048 | Intersections forms and the geometry of lattice Chern-Simons theory | We show that it is possible to formulate Abelian Chern-Simons theory on a
lattice as a topological field theory. We discuss the relationship between
gauge invariance of the Chern-Simons lattice action and the topological
interpretation of the canonical structure. We show that these theories are
exactly solvable and hav... | 1992-04-16 | 2009-10-22 | [
"hep-th"
] | David Eliezer and Gordon Semenoff |
hep-th/9204050 | Topological Gauged WZW Models and 2D Gravity | We study the "topological gauged WZW model associated with
$SU(2)/U(1)$",which is defined as the twisted version of the corresponding
supersymmetric gauged WZW model. It is shown that this model is equivalent to a
topological conformal field theory characterized by two independent topological
conformal algebras, one of... | 1992-04-16 | 2009-10-22 | [
"hep-th"
] | Toshio Nakatsu and Yuji Sugawara |
hep-th/9204049 | Scattering of Open and Closed Strings in 1+1 Dimensions | The ground ring structure of 1+1 dimensional string theory leads to an
infinite set of non linear recursion relations among the `bulk' scattering
amplitudes of open and closed tachyons on the disk, which fix them uniquely.
The relations are generated by the action of the ring on the tachyon modules;
associativity of th... | 1992-04-16 | 2010-11-01 | [
"hep-th"
] | M. Bershadsky and D. Kutasov |
hep-th/9204047 | Strong Coupling Qed Breaks Chiral Symmetry | We show that the strong coupling limit of d-dimensional quantum
electrodynamics with $2^{d}/2^{[d/2]}$ flavors of fermions can be mapped onto
the s=1/2 quantum Heisenberg antiferromagnet in d-1 space dimensions. The
staggered N\'eel order parameter is the expectation value of a mass operator in
QED and the spin-waves a... | 1992-04-15 | 2015-06-26 | [
"hep-th"
] | Gordon Semenoff |
hep-th/9204046 | Rotating Charged Black Hole Solution in Heterotic String Theory | We construct a solution of the classical equations of motion arising in the
low energy effective field theory for heterotic string theory. This solution
describes a black hole in four dimensions carrying mass $M$, charge $Q$ and
angular momentum $J$. The extremal limit of the solution is discussed. | 1992-04-15 | 2009-09-15 | [
"hep-th"
] | Ashoke Sen |
hep-th/9204043 | BRST-Fixed Points and Topological Conformal Symmetry | We study the twisted version of the supersymmetric
$G/T=SU(n)/U(1)^{\otimes(n-1)} gauged Wess-Zumino-Witten model. By studying its
fixed points under BRST transformation this model is shown to be reduced to a
simple topological field theory, that is, the topological matter system in the
K.Li's theory of 2 dimensional g... | 1992-04-15 | 2015-06-26 | [
"hep-th"
] | Toshio Nakatsu and Yuji Sugawara |
hep-th/9204044 | Perturbation Theory for Antisymmetric Tensor Fields in Four Dimensions | Perturbation theory for a class of topological field theories containing
antisymmetric tensor fields is considered. These models are characterized by a
supersymmetric structure which allows to establish their perturbative
finiteness. | 1992-04-15 | 2015-06-26 | [
"hep-th"
] | Nicola Maggiore and Silvio P. Sorella |
hep-th/9204039 | Membrane Pregeometry and the Vanishing of the Cosmological Constant | We suggest a model of induced gravity in which the fundamental object is a
relativistic {\it membrane} minimally coupled to a background metric and to an
external three index gauge potential. We compute the low energy limit of the
two-loop effective action as a power expansion in the surface tension. A
generalized boot... | 1992-04-15 | 2010-04-06 | [
"hep-th"
] | A.Aurilia, A.Smailagic, E.Spallucci |
hep-th/9204045 | Non-Renormalization Properties of the Chern-Simons Action Coupled to
Matter | We analyze an abelian gauge model in 3 dimensions which includes massless
scalar matter fields. By controlling the trace anomalies with a local
dilatation Ward identity, we show that, in perturbation theory and within the
BPHZL scheme, the Chern-Simons term has no radiative corrections. This implies,
in particular, the... | 1992-04-15 | 2009-10-22 | [
"hep-th"
] | Alberto Blasi, Nicola Maggiore and Silvio P. Sorella |
hep-th/9204042 | Asymptotic Behavior of 2-d Black Holes | We consider the solutions of the field equations for the large $N$ dilaton
gravity model in $1+1$ dimensions recently proposed by Callan, Giddings, Harvey
and Strominger (CGHS). We find time dependant solutions with finite mass and
vanishing flux in the weak coupling regime, as well as solutions which lie
entirely in t... | 1992-04-15 | 2009-10-22 | [
"hep-th"
] | E. Raiten |
hep-th/9204035 | Picard-Fuchs Equations and Special Geometry | We investigate the system of holomorphic differential identities implied by
special K\"ahlerian geometry of four-dimensional N=2 supergravity. For
superstring compactifications on \cy threefolds these identities are equivalent
to the Picard-Fuchs equations of algebraic geometry that are obeyed by the
periods of the hol... | 1992-04-15 | 2015-06-26 | [
"hep-th"
] | A. Ceresole, R. D'Auria, S. Ferrara, W. Lerche and J. Louis |
hep-th/9204038 | On Realisations of W Algebras | It has been known for some time that $W$ algebras can be realised in terms of
an energy-momentum tensor together with additional free scalar fields. Some
recent results have shown that more general realisations are also possible. In
this paper, we consider a wide class of realisations that may be obtained from
the Miur... | 1992-04-14 | 2009-10-07 | [
"hep-th"
] | H. Lu and C.N. Pope |
hep-th/9204037 | Yukawa Couplings for Bosonic $Z_N$ Orbifolds: Their Moduli and Twisted
Sector Dependence | The three point correlation functions with twist fields are determined for
bosonic $Z_N$ orbifolds. Both the choice of the modular background (compatible
with the twist) and of the (higher) twisted sectors involved are fully general.
We point out a necessary restriction on the set of instantons contributing to
twist fi... | 1992-04-14 | 2010-11-01 | [
"hep-th"
] | S. Stieberger, D. Jungnickel, J. Lauer, M. Spalinski |
hep-th/9204034 | A Continuum Description of Super-Calogero Models | An investigation is made of the super-Calogero model with particular emphasis
on its continuum formulation and possible application in the context of
supersymmetrizing the bosonic collective d=1 string field theory. | 1992-04-14 | 2007-05-23 | [
"hep-th"
] | Andre J. van Tonder |
hep-th/9204036 | On the construction of integrable dilute ADE models | We give an integrable extension of the lattice models recently considered by
I.Kostov in his study of strings in discrete space. These models are IRF models
with spin variables living in any connected graph, the vertex model underlying
these models is the Izergin-Korepin model. When the graph is taken to be a
simply la... | 1992-04-14 | 2009-10-22 | [
"hep-th"
] | Philippe Roche |
hep-th/9204033 | Bosonic Chern-Simons Field Theory of Anyon Superconductivity | We study the Quantum Field Theory of nonrelativistic bosons coupled to a
Chern--Simons gauge field at nonzero particle density. This field theory is
relevant to the study of anyon superconductors in which the anyons are
described as {\bf bosons} with a statistical interaction. We show that it is
possible to find a mean... | 1992-04-13 | 2015-06-26 | [
"hep-th"
] | Nathan Weiss |
hep-th/9204032 | On the Stability of a Stringy Black Hole | We study the stability under perturbations of a charged four dimensional
stringy black hole arising from gauging a previously studied WZW model. We find
that the black hole is stable only in the extremal case $Q=M$. | 1992-04-13 | 2009-10-22 | [
"hep-th"
] | A. Carlini, F. Fucito and M. Martellini |
hep-th/9204031 | Gravitational Effects in Supersymmetric Domain Wall Backgrounds | A recent study of supersymmetric domain walls in $N=1$ supergravity theories
revealed a new class of domain walls interpolating between supersymmetric vacua
with different non-positive cosmological constants. We classify three classes
of domain wall configurations and study the geodesic structure of the induced
space-t... | 1992-04-13 | 2009-09-25 | [
"hep-th"
] | M. Cvetic and S. Griffies |
hep-th/9204030 | Moduli Corrections to Gauge and Gravitational Couplings in four
dimensional Superstrings | We study one-loop, moduli-dependent corrections to gauge and gravitational
couplings in supersymmetric vacua of the heterotic string. By exploiting their
relation to the integrability condition for the associated CP-odd couplings, we
derive general expressions for them, both for $(2,2)$ and $(2,0)$ models, in
terms of ... | 1992-04-13 | 2009-10-22 | [
"hep-th"
] | I. Antoniadis, E. Gava and K.S. Narain |
hep-th/9204029 | 2+1 Gravity without dynamics | A three dimensional generally covariant theory is described that has a 2+1
canonical decomposition in which the Hamiltonian constraint, which generates
the dynamics, is absent. Physical observables for the theory are described and
the classical and quantum theories are compared with ordinary 2+1 gravity. | 1992-04-11 | 2009-10-22 | [
"hep-th"
] | Viqar Husain |
hep-th/9204027 | Gauge Symmetries and Amplitudes in N=2 Strings | Picture changed operators are discussed in $N=2$ strings with space-time
signature $(2,2)$. A gauge symmetry algebra is derived in a background of torus
space-time $T^{2,2}$ and its simple representation on the picture changed
operators is given. Simple Ward identities associated with the gauge algebra
and their conseq... | 1992-04-11 | 2009-10-22 | [
"hep-th"
] | Miao Li |
hep-th/9204041 | Topological First-Order Systems with Landau-Ginzburg Interactions | We consider the realization of N=2 superconformal models in terms of free
first-order $(b,c,\beta,\gamma)$-systems, and show that an arbitrary
Landau-Ginzburg interaction with quasi-homogeneous potential can be introduced
without spoiling the (2,2)-superconformal invariance. We discuss the
topological twisting and the ... | 1992-04-10 | 2009-10-22 | [
"hep-th"
] | P. Fre', L. Girardello, A. Lerda and P. Soriani |
hep-th/9204040 | On the Moduli Space of the $T^6/Z_3$ Orbifold and Its Modular Group | We describe the duality group $\Gamma=SU(3,3,Z)$ for the Narain lattice of
the $T^6/Z_3$ orbifold and its action on the corresponding moduli space. A
symplectic embedding of the momenta and winding numbers allows us to connect
the orbifold lattice to the special geometry of the moduli space. As an
application, a formal... | 1992-04-10 | 2010-04-06 | [
"hep-th"
] | S. Ferrara, P. Fr\`e, P. Soriani |
hep-th/9204023 | Superfield Realizations of $N=2$ Super-$W_3$ | We present a manifestly $N=2$ supersymmetric formulation of $N=2$ super-$W_3$
algebra (its classical version) in terms of the spin 1 and spin 2
supercurrents. Two closely related types of the Feigin-Fuchs representation for
these supercurrents are found: via two chiral spin $\frac{1}{2}$ superfields
generating $N=2$ ex... | 1992-04-10 | 2009-10-22 | [
"hep-th"
] | E.Ivanov and S.Krivonos |
hep-th/9204025 | Quantum Fermion Hair | It is shown that the Dirac operator in the background of a magnetic
%Reissner-Nordstr\"om black hole and a Euclidean vortex possesses normalizable
zero modes in theories containing superconducting cosmic strings. One
consequence of these zero modes is the presence of a fermion condensate around
magnetically charged bla... | 1992-04-10 | 2009-10-22 | [
"hep-th"
] | Ruth Gregory and Jeffrey Harvey |
hep-th/9204024 | Higher Order Conformal Invariance of String Backgrounds Obtained by
O(d,d) Transformations | Proposals that $O(d,d)$ boosts of trivial backgrounds lead to non-trivial
conformally invariant backgrounds are checked to two loop order. We find that
conformal invariance can be achieved by adding simple higher order corrections
to the metric and dilaton. | 1992-04-10 | 2009-10-22 | [
"hep-th"
] | J. Panvel |
hep-th/9204028 | Classical Fermi Fluid and Geometric Action for $c=1$ | We formulate the $c=1$ matrix model as a quantum fluid and discuss its
classical limit in detail, emphasizing the $\hbar$ corrections. We view the
fermi fluid profiles as elements of \winf-coadjoint orbit and write down a
geometric action for the classical phase space. In the specific representation
of fluid profiles a... | 1992-04-10 | 2010-11-01 | [
"hep-th"
] | Avinash Dhar, Gautam Mandal and Spenta R. Wadia |
hep-th/9204026 | Dilaton Gravity and No-Hair Theorem in Two Dimensions | We study a general class of two-dimensional theories of the dilaton-gravity
type inspired by string theory and show that they admit charged
multiple-horizon black holes. These solutions are proved to satisfy scalar
no-hair theorems. | 1992-04-10 | 2009-10-22 | [
"hep-th"
] | Olaf Lechtenfeld and Chiara Nappi |
hep-th/9204022 | Ashtekar Formulation of 2+1 Gravity on a Torus | Pure (2+1)-dimensional Einstein gravity is analysed in the Ashtekar
formulation, when the spatial manifold is a torus. We have found a set of
globally defined observables, forming a closed algebra. This allowed us to
solve the quantum constraints, and to show that the reduced phase space of the
Ashtekar formulation is ... | 1992-04-09 | 2009-01-16 | [
"hep-th"
] | N. Manojlovic and A. Mikovic |
hep-th/9204021 | Electrodynamics in the presence of an axion | The low energy limit of an axion field coupled to gauge fields is
investigated through the behaviour of the gauge field propagator in a local
vaccum angle background. The local (singular) part of the effective action for
the axion field is calculated at one loop level. In the case of a timelike,
linearly growing axion ... | 1992-04-09 | 2015-06-26 | [
"hep-th"
] | Claudio Coriano' |
hep-th/9204087 | Vector Fields and the Unity of Mathematics and Physics | We give an argument that magnetic monopoles should not exist. It is based on
the concept of the index of a vector field. The thrust of the argument is that
indices of vector fields are invariants of space-time orientation and of
coordinate changes, and thus physical vector fields should preserve indices.
The index is d... | 1992-04-09 | 2008-02-03 | [
"hep-th",
"math.GT"
] | Daniel Henry Gottlieb |
hep-th/9204020 | Symplectic fusion rings and their metric | The fusion of fields in a rational conformal field theory gives rise to a
ring structure which has a very particular form. All such rings studied so far
were shown to arise from some potentials. In this paper the fusion rings of the
WZW models based on the symplectic group are studied. It is shown that they
indeed aris... | 1992-04-08 | 2009-10-22 | [
"hep-th"
] | D. Gepner and A. Schwimmer (Weizmann Institute of science, Israel) |
hep-th/9204019 | An alternative approach to KP hierarchy in matrix models | We show that there exists an alternative procedure in order to extract
differential hierarchies, such as the KdV hierarchy, from one--matrix models,
without taking a continuum limit. To prove this we introduce the Toda lattice
and reformulate it in operator form. We then consider the reduction to the
systems appropriat... | 1992-04-08 | 2009-10-22 | [
"hep-th"
] | L.Bonora, C.S.Xiong |
hep-th/9204018 | A naive matrix-model approach to two-dimensional quantum gravity coupled
to matter of arbitrary central charge | In the usual matrix-model approach to random discretized two-dimensional
manifolds, one introduces n Ising spins on each cell, i.e. a discrete version
of 2D quantum gravity coupled to matter with a central charge n/2. The
matrix-model consists then of an integral over $2^{n}$ matrices, which we are
unable to solve for ... | 1992-04-08 | 2009-10-22 | [
"hep-th"
] | E. Brezin and S. Hikami |
hep-th/9204015 | Matter Coupling and Spontaneous Symmetry Breaking in Topological Gravity | Matter is coupled to three-dimensional gravity such that the topological
phase is allowed and the (anti-) de Sitter or Poincar\'e symmetry remains
intact. Spontaneous symmetry breaking to the Lorentz group occurs if a scalar
field is included. This Higgs field can then be used to couple matter so that
the familiar form... | 1992-04-07 | 2009-10-22 | [
"hep-th"
] | T.T. Burwick, A.H. Chamseddine and K.Meissner |
hep-th/9204017 | World-Sheet Geometry and Baby Universes in 2-D Quantum Gravity | We show that the surface roughness for $c<1$ matter theories coupled to $2D$
quantum gravity is described by a self-similar structure of baby universes.
There exist baby universes whose neck thickness is of the order of the
ultraviolet cutoff, the largest of these having a macroscopic area $\sim A^{1
\over {1-\gamma}}$... | 1992-04-07 | 2009-10-22 | [
"hep-th"
] | Sanjay Jain and Samir D. Mathur |
hep-th/9204016 | Nonlinear realizations of $W_3$ symmetry | We deduce the $sl_{3}$ Toda realization of classical $W_3$ symmetry on two
scalar fields in a geometric way, proceeding from a nonlinear realization of
some associate higher-spin symmetry $W_{3}^{\infty}$. The Toda equations are
recognized as the constraints singling out a two-dimensional fully geodesic
subspace in the... | 1992-04-07 | 2008-11-26 | [
"hep-th"
] | E.Ivanov, S.Krivonos and A.Pichugin |
hep-th/9204014 | Is General Relativity an 'Already Parametrized' Field Theory? | Beginning with the work of Dirac and Arnowitt, Deser, Misner in the late
fifties and early sixties, and then after subsequent development by Kucha\v r,
the canonical dynamical structure of general relativity has often been viewed
as that of a parametrized field theory in which the many-fingered spacetime
variables are ... | 1992-04-06 | 2009-12-30 | [
"hep-th"
] | C. G. Torre |
hep-th/9204012 | Supersymmetry Breaking and Determination of the Unification Gauge
Coupling Constant in String Theories | We study in a systematic and modular invariant way gaugino condensation in
the hidden sector as a potential source of hierarchical supersymmetry breaking
and a non--trivial potential for the dilaton $S$ whose real part corresponds to
the tree level gauge coupling constant (${\rm Re}\ S\sim g_{gut}^{-2}$). For
the case ... | 1992-04-06 | 2009-10-29 | [
"hep-th"
] | B. de Carlos, J.A. Casas and C. Mu\~noz |
hep-th/9204013 | Matrix Models and One Dimensional Open String Theory (Revised) | We propose a random matrix model as a representation for $D=1$ open strings.
We show that the model is equivalent to $N$ fermions with spin in a central
potential that also includes a long-range ferromagnetic interaction between the
fermions that falls off as $1/(r_{ij})^2$. We find two interesting scaling
limits and c... | 1992-04-06 | 2009-10-22 | [
"hep-th"
] | Joseph A. Minahan |
hep-th/9204009 | 2+1 Dimensional Quantum Gravity as a Gaussian Fermionic System and the
3D-Ising Model | We show that 2+1-dimensional Euclidean quantum gravity is equivalent, under
some mild topological assumptions, to a Gaussian fermionic system. In
particular, for manifolds topologically equivalent to $\Sigma_g\times\RrR$ with
$\Sigma_g$ a closed and oriented Riemann surface of genus $g$, the
corresponding 2+1-dimension... | 1992-04-04 | 2007-05-23 | [
"hep-th"
] | Giuseppe Bonacina, Maurizio Martellini and Mario Rasetti |
hep-th/9204010 | Berry's Phase and Euclidean Path Integral | A method for finding Berry's phase is proposed under the Euclidean path
integral formalism. It is characterized by picking up the imaginary part from
the resultant exponent. Discussion is made on the generalized harmonic
oscillator which is shown being so universal in a single degree case. The spin
model expressed by c... | 1992-04-04 | 2009-10-22 | [
"hep-th"
] | Taro Kashiwa, Shuji Nima and Seiji Sakoda |
hep-th/9204007 | Anomalous Transformation in Supersymmetric Yang-Mills Theory | An ``anomalous'' supersymmetry transformation of the gaugino axial current is
given in supersymmetric Yang-Mills theory. The contact term is computed to
one-loop order by a gauge-invariant point-splitting procedure. We reexamine the
supercurrent anomaly in this method. | 1992-04-03 | 2009-10-22 | [
"hep-th"
] | H.Itoyama and B.Razzaghe-Ashrafi |
hep-th/9204006 | Noncompact Coset Spaces in String Theory | A brief overview of strings propagating on noncompact coset spaces G/H is
presented in terms of WZW models. The role played by isometries in the
existence of target space duality and by fixed points of the gauge
transformations in the existence of singularities and horizons, is emphasized.
A general classification of t... | 1992-04-03 | 2007-05-23 | [
"hep-th"
] | Fernando Quevedo |
hep-th/9204008 | Self-Dual Chern-Simons Solitons with Non-Compact Groups | It is shown how to couple non-relativistic matter with a Chern--Simons gauge
field that belongs to a non-compact group. We treat in some details the
$SL(2,{\bf R})$ and the Poincar\'e $ISO(2,1)$ groups. For suitable
self-interactions, we are able to exhibit soliton solutions. | 1992-04-03 | 2009-10-22 | [
"hep-th"
] | Daniel Cangemi |
hep-th/9204003 | Physics beyond quasi-particles: Spectrum and completeness of the 3 state
superintegrable chiral Potts model | We find the rules which count the energy levels of the 3 state
superintegrable chiral Potts model and demonstrate that these rules are
complete. We then derive the complete spectrum of excitations in the
thermodynamic limit in the massive phase and demonstrate the existence of
excitations which do not have a quasi-part... | 1992-04-02 | 2009-10-22 | [
"hep-th"
] | Srinandan Dasmahapatra, Rinat Kedem and Barry McCoy |
hep-th/9204002 | Classical and Quantum Considerations of Two-dimensional Gravity | The two-dimensional theory of gravity describing a graviton-dilaton system is
considered. The graviton-dilaton coupling can be fixed such that the quantum
theory remains free of the conformal anomaly for any conformal dimension of the
coupled matter system, even if the dilaton does not appear as Lagrange
multiplier. In... | 1992-04-02 | 2009-10-22 | [
"hep-th"
] | T. T. Burwick and A. H. Chamseddine |
hep-th/9204005 | The N=4 string is the same as the N=2 string | We redo the quantization of the N=4 string, taking into account the
reducibility of the constraints. The result is equivalent to the N=2 string,
with critical dimension D=4 and signature (++--). The N=4 formulation has
several advantages: the sigma-model field equations are implied classically,
rather than by quantum/b... | 1992-04-02 | 2009-10-22 | [
"hep-th"
] | W. Siegel |
hep-th/9204004 | Conformal Symmetry and Differential Regularization of the Three-Gluon
Vertex | The conformal symmetry of the QCD Lagrangian for massless quarks is broken
both by renormalization effects and the gauge fixing procedure. Renormalized
primitive divergent amplitudes have the property that their form away from the
overall coincident point singularity is fully determined by the bare
Lagrangian, and scal... | 1992-04-02 | 2009-10-08 | [
"hep-th"
] | Daniel Z. Freedman, Gianluca Grignani, Nuria Rius and Kenneth Johnson |
hep-th/9204001 | Axionic Membranes | A metal ring removed from a soap-water solution encloses a film of soap which
can be mathematically described as a minimal surface having the ring as its
only boundary. This is known to everybody. In this letter we suggest a
relativistic extension of the above fluidodynamic system where the soap film is
replaced by a K... | 1992-04-01 | 2009-10-22 | [
"hep-th"
] | A.Aurilia and E.Spallucci |
hep-th/9203084 | Periods and Duality Symmetries in Calabi-Yau Compactifications | We derive the period structure of several one-modulus Calabi-Yau manifolds.
With this knowledge we then obtain the generators of the duality group and the
mirror map that defines the physical variable $t$ representing the radius of
compactification. We also describe the fundamental region of $t$ and discuss
its relatio... | 1992-03-31 | 2014-11-18 | [
"hep-th"
] | Anamaria Font |
hep-th/9203082 | Eikonal Quantum Gravity and Planckian Scattering | Various approaches to high energy forward scattering in quantum gravity are
compared using the eikonal approximation. The massless limit of the eikonal is
shown to be equivalent to other approximations for the same process,
specifically the semiclassical calculation due to G. 't Hooft and the
topological field theory d... | 1992-03-30 | 2008-11-26 | [
"hep-th"
] | Dan Kabat and Miguel Ortiz |
hep-th/9203083 | Rotating Dilaton Black Holes | It is shown that an arbitrarily small amount of angular momentum can
qualitatively change the properties of extremal charged black holes coupled to
a dilaton. In addition, the gyromagnetic ratio of these black holes is computed
and an exact rotating black string solution is presented. | 1992-03-30 | 2008-11-26 | [
"hep-th"
] | James H. Horne and Gary T. Horowitz |
hep-th/9203078 | Extended Supersymmetry and Self-Duality in 2+2 Dimensions | The $N=2$ supersymmetric {\it self-dual} Yang-Mills theory and the $N=4$ and
$N=2$ {\it self-dual} supergravities in $2+2$ space-time dimensions are
formulated for the first time. These formulations utilize solutions of the
Bianchi identities subject to the super-Yang-Mills or supergravity constraints
in the relevant $... | 1992-03-30 | 2012-08-27 | [
"hep-th"
] | S.J. Gates, Jr, H. Nishino and S.V. Ketov |
hep-th/9203077 | Finite W-algebras | Finite versions of W-algebras are introduced by considering (symplectic)
reductions of finite dimensional simple Lie algebras. In particular a finite
analogue of $W^{(2)}_3$ is introduced and studied in detail. Its unitary and
non-unitary, reducible and irreducible highest weight representations are
constructed. | 1992-03-30 | 2009-10-22 | [
"hep-th"
] | T.Tjin |
hep-th/9203079 | Weaving a classical geometry with quantum threads | Results that illuminate the physical interpretation of states of
nonperturbative quantum gravity are obtained using the recently introduced loop
variables. It is shown that: i) While local operators such as the metric at a
point may not be well-defined, there do exist {\it non-local} operators, such
as the area of a gi... | 1992-03-30 | 2011-04-20 | [
"hep-th"
] | Abhay Ashtekar, Carlo Rovelli and Lee Smolin |
hep-th/9203076 | Quantizing SL(N) Solitons and the Hecke Alegbra | The problem of quantizing a class of two-dimensional integrable quantum field
theories is considered. The classical equations of the theory are the complex
$sl(n)$ affine Toda equations which admit soliton solutions with real masses.
The classical scattering theory of the solitons is developed using Hirota's
solution t... | 1992-03-30 | 2010-11-01 | [
"hep-th"
] | T.J. Hollowood |
hep-th/9203081 | Majorana-Weyl Spinors and Self-Duality Gauge Fields in 2+2 Dimensions | The properties of Dirac gamma matrices in a four-dimensional space-time with
the $(2,2)$ signature are studied. The basic spinors are classified, and the
existence of Majorana-Weyl spinors is noted. Supersymmetry in $2 + 2$
dimensions is discussed, and the existence of the {\it real chiral} scalar
supermultiplet is dis... | 1992-03-30 | 2012-08-27 | [
"hep-th"
] | S.V. Ketov, S.J. Gates, Jr. and H. Nishino |
hep-th/9203080 | Supersymmetric Self-Dual Yang-Mills and Supergravity as Background of
Green-Schwarz Superstring | We present the Green-Schwarz $\s\-$model coupled to the $N=1$ {\it
{supersymmetric}} Yang-Mills and supergravity in a four-dimensional space-time
with the indefinite signature $(+,+,-,-)$. We first confirm the
$\k\-$invariance of the Green-Schwarz action, and show that all the
$\b\-$functions for the backgrounds vanish... | 1992-03-30 | 2012-08-27 | [
"hep-th"
] | H. Nishino, S.J. Gates, Jr, and S.V. Ketov |
hep-th/9203074 | A cubic action for self-dual Yang-Mills | We make a change of field variables in the J formulation of self-dual
Yang--Mills theory. The field equations for the resulting algebra valued field
are derivable from a simple cubic action. The cubic interaction vertex is
different from that considered previously from the N=2 string, however,
perturbation theory with ... | 1992-03-28 | 2009-10-22 | [
"hep-th"
] | Andrew Parkes |
hep-th/9203075 | Current Algebra of WZNW Models at and away from Criticality | We derive the current algebra of principal chiral models with a Wess-Zumino
term. At the critical coupling where the model becomes conformally invariant
(Wess-Zumino-Novikov-Witten theory), this algebra reduces to two commuting
Kac-Moody algebras, while in the limit where the coupling constant is taken to
zero (ordinar... | 1992-03-28 | 2015-06-26 | [
"hep-th"
] | E. Abdalla, M. Forger |
hep-th/9203073 | Quantum Group Analysis of the Bound States in the Strong Coupling Regime
of the Modified Sine-Gordon Model | A quantum group analysis is applied to the Sine-Gordon model (or may be its
version) in a strong-coupling regime. Infinitely many bound states are found
together with the corresponding S-matrices. These new solutions of the
Yang-Baxter eqations are related to some reducible representations of the
quantum $sl(2)$ algebr... | 1992-03-27 | 2007-05-23 | [
"hep-th"
] | Sergei V. Pokrovsky |
hep-th/9204011 | Target Space Structure of a Chiral Gauged Wess-Zumino-Witten Model | The background for string propagation is obtained by a chiral gauging of the
$SL(2,R)$ Wess-Zumino-Witten model. It is shown explicitly that the resulting
background fields satisfy the field equations of the three dimensional string
effective action and the target space has curvature singularity. Close
connection of ou... | 1992-03-27 | 2009-10-22 | [
"hep-th"
] | Supriya K. Kar and Alok Kumar |
hep-th/9203072 | Midisuperspace-Induced Corrections to the Wheeler De Witt Equation | We consider the midisuperspace of four dimensional spherically symmetric
metrics and the Kantowski-Sachs minisuperspace contained in it. We discuss the
quantization of the midisuperspace using the fact that the dimensionally
reduced Einstein Hilbert action becomes a scalar-tensor theory of gravity in
two dimensions. We... | 1992-03-26 | 2010-11-19 | [
"hep-th"
] | Francisco D. Mazzitelli |
hep-th/9203071 | Moduli Corrections to Gravitational Couplings from String loops | We study moduli dependent threshold corrections to gravitational couplings in
the case of the heterotic string compactified on a symmetric orbifold, for
untwisted moduli, extending previous analysis on gauge couplings. Like in the
gauge case, the contribution comes entirely from the spacetime $N=2$ sector. As
a byprodu... | 1992-03-25 | 2010-11-01 | [
"hep-th"
] | I. Antoniadis, E. Gava and K. S. Narain |
hep-th/9203068 | $W_\infty$ and Anomalies of Self-Dual Einstein Theories | This manuscripts corrects some minor error in the paper, Mod. Phys. Lett. A 6
1893 (1991) | 1992-03-25 | 2009-10-22 | [
"hep-th"
] | V.G.J. Rodgers |
hep-th/9203067 | Applications of W-algebras to BF theories, QCD and 4D Gravity | We are able to show that BF theories naturally emerge from the coadjoint
orbits of $W_2$ and $w_\infty$ algebras which includes a Kac-Moody sector.
Since QCD strings can be identified with a BF theory, we are able to show a
relationship between the orbits and monopole-string solutions of QCD.
Furthermore, we observe th... | 1992-03-25 | 2009-10-22 | [
"hep-th"
] | Ralph Lano and V.G.J. Rodgers |
hep-th/9203070 | Finiteness and anomalies in (4,0) supersymmetric sigma models | Power-counting arguments based on extended superfields have been used to
argue that two-dimensional supersymmetric sigma models with (4,0) supersymmetry
are finite. This result is confirmed up to three loop order in pertubation
theory by an explicit calculation using (1,0) superfields. In particular, it is
shown that t... | 1992-03-25 | 2009-10-09 | [
"hep-th"
] | P.S. Howe and G. Papadopoulos |
hep-th/9203069 | S and T matrices for the super $U(1,1)$ WZW model. Application to
surgery and 3-manifold invariants based on the Alexander Conway polynomial | We carry on the study of the Alexander Conway invariant from the quantum
field theory point of view started in \cite{RS91}.
We first discuss in details $S$ and $T$ matrices for the $U(1,1)$ super WZW
model and obtain, for the level $k$ an integer, new finite dimensional
representations of the modular group. These hav... | 1992-03-25 | 2011-07-18 | [
"hep-th",
"math.QA"
] | Lev Rozansky, Herbert Saleur |
hep-th/9203065 | Bethe Ansatz and Quantum Groups: The Light--Cone Approach. II. From
RSOS($p+1$) models to $p-$restricted Sine--Gordon Field Theories | We solve the RSOS($p$) models on the light--cone lattice with fixed boundary
conditions by disentangling the type II representations of $SU(2)_q$, at
$q=e^{i\pi/p}$, from the full SOS spectrum obtained through Algebraic Bethe
Ansatz. The rule which realizes the quantum group reduction to the RSOS states
is that there m... | 1992-03-24 | 2009-10-22 | [
"hep-th"
] | C. Destri and H.J. de Vega |
hep-th/9203064 | New Approach to Thermal Bethe Ansatz | We present a new approach to the calculation of thermodynamic functions for
crossing-invariant models solvable by Bethe Ansatz. In the case of the XXZ
Heisemberg chain we derive, for arbitrary values of the anysotropy, a {\bf
single} non--linear integral equation from which the free energy can be exactly
calculated. Th... | 1992-03-24 | 2008-02-03 | [
"hep-th"
] | C. Destri and H.J. de Vega |
hep-th/9203063 | The Spectrum of Sl(2, R)/U(1) Black Hole Conformal Field Theory | We study string theory in the background of a two-dimensional black hole
which is described by an $SL(2, R)/U(1)$ coset conformal field theory. We
determine the spectrum of this conformal field theory using supersymmetric
quantum mechanics and give an explicit form of the vertex operators in terms of
the Jacobi functio... | 1992-03-24 | 2009-10-22 | [
"hep-th"
] | Dileep P. Jatkar |
hep-th/9203066 | Massive Orbifold | We study some aspects of 2d supersymmetric sigma models on orbifolds. It
turns out that independently of whether the 2d QFT is conformal the operator
products of twist operators are non-singular, suggesting that massive
(non-conformal) orbifolds also `resolve singularities' just as in the conformal
case. Moreover we re... | 1992-03-24 | 2015-06-26 | [
"hep-th"
] | S. Cecotti and C. Vafa |
hep-th/9203062 | A note on the KP hierarchy | Given the two boson representation of the conformal algebra \hat W_\infty,
the second Hamiltonian structure of the KP hierarchy, I construct a
bi-Hamiltonian hierarchy for the two associated currents. The KP hierarchy
appears as a composite of this new and simpler system. The bi-Hamiltonian
structure of the new hierarc... | 1992-03-23 | 2015-06-26 | [
"hep-th"
] | Didier A Depireux |
hep-th/9203060 | Classical Scattering in $1+1$ Dimensional String Theory | We find the general solution to Polchinski's classical scattering equations
for $1+1$ dimensional string theory. This allows efficient computation of
scattering amplitudes in the standard Liouville $\times$ $c=1$ background.
Moreover, the solution leads to a mapping from a large class of time-dependent
collective field... | 1992-03-22 | 2011-10-11 | [
"hep-th",
"hep-ph"
] | G. Moore and R. Plesser |
hep-th/9203061 | Gravitational Phase Transitions and the Sine-Gordon Model | We consider the Sine-Gordon model coupled to 2D gravity. We find a
nonperturbative expression for the partition function as a function of the
cosmological constant, the SG mass and the SG coupling constant. At genus zero,
the partition function exhibits singularities which are interpreted as signals
of phase transition... | 1992-03-22 | 2007-05-23 | [
"hep-th"
] | Gregory Moore |
hep-th/9203059 | Black Holes and Massive Remnants | This paper revisits the conundrum faced when one attempts to understand the
dynamics of black hole formation and evaporation without abandoning unitary
evolution. Previous efforts to resolve this puzzle assume that information
escapes in corrections to the Hawking process, that an arbitrarily large amount
of informatio... | 1992-03-21 | 2009-10-22 | [
"hep-th"
] | S.B. Giddings |
hep-th/9203058 | World-Sheet Supersymmetry Without Contact Terms | Green and Seiberg showed that, in simple treatments of fermionic string
theory, it is necessary to introduce contact interactions when vertex operators
collide. Otherwise, certain superconformal Ward identities would be violated.
In this note, we show how these contact terms arise naturally when proper
account is taken... | 1992-03-20 | 2009-10-22 | [
"hep-th"
] | J. Distler, M. Doyle |
hep-th/9203057 | Dirty blackholes: Thermodynamics and horizon structure | Considerable interest has recently been expressed in (static spherically
symmetric) blackholes in interaction with various classical matter fields (such
as electromagnetic fields, dilaton fields, axion fields, Abelian Higgs fields,
non--Abelian gauge fields, {\sl etc}). A common feature of these investigations
that has... | 1992-03-20 | 2011-07-19 | [
"hep-th"
] | Matt Visser |
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