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/9202051 | Classical {\it vs.}\ Landau-Ginzburg Geometry of Compactification | We consider superstring compactifications where both the classical
description, in terms of a Calabi-Yau manifold, and also the quantum theory is
known in terms of a Landau-Ginzburg orbifold model. In particular, we study
(smooth) Calabi-Yau examples in which there are obstructions to parametrizing
all of the complex s... | 1992-02-14 | 2010-11-01 | [
"hep-th"
] | P.~Berglund, B.R.~Greene and T.~H\"ubsch |
hep-th/9202050 | The Marinari-Parisi Model and Collective Field Theory | We derive the supersymmetric collective field theory for the Marinari-Parisi
model. For a specific choice of the superpotential, to leading order we find a
one parameter family of ground states which can be connected via instantons. At
this level of analysis the instanton size implied by the underlying matrix
model doe... | 1992-02-14 | 2015-06-26 | [
"hep-th"
] | J.D. Cohn and H. Dykstra |
hep-th/9202049 | Non-critical NSR string field theory and discrete states interaction in
2D supergravity | String field theory for the non-critical NSR string is described. In
particular it gives string field theory for the 2D super-gravity coupled to a
$\hat{c}=1$ matter field. For this purpose double-step pictures changing
operators for the non-critical NSR string are constructed. Analogues of the
critical supersymmetry t... | 1992-02-14 | 2007-05-23 | [
"hep-th"
] | I.Ya.Aref'eva and A.P.Zubarev |
hep-th/9202042 | The two-dimensional O(3) nonlinear $\sigma$-model at finite temperature | We present a direct derivation of the thermodynamic integral equations of the
O(3) nonlinear $\sigma$-model in two dimensions. | 1992-02-13 | 2009-10-22 | [
"hep-th"
] | Marcio J.Martins |
hep-th/9202045 | An Alternative Scenario for Non-Abelian Quantum Hair | Topologically charged black holes in a theory with a 2-form coupled to a
non-abelian gauge field are investigated. It is found that the classification
of the ground states is similar to that in the theory of non-abelian discrete
quantum hair. | 1992-02-13 | 2009-10-22 | [
"hep-th"
] | Amitabha Lahiri |
hep-th/9202044 | Representation theory, topological field theory, and the Andrews-Curtis
conjecture | We pose a representation-theoretic question motivated by an attempt to
resolve the Andrews-Curtis conjecture. Roughly, is there a triangular Hopf
algebra with a collection of self-dual irreducible representations $V_i$ so
that the product of any two decomposes as a sum of copies of the $V_i$, and
$\sum (\rank V_i)^2=0$... | 1992-02-13 | 2008-02-03 | [
"hep-th",
"math.GR",
"math.QA"
] | Frank Quinn |
hep-th/9202043 | Chiral Bosons Through Linear Constraints | We study in detail the quantization of a model which apparently describes
chiral bosons. The model is based on the idea that the chiral condition could
be implemented through a linear constraint. We show that the space of states is
of indefinite metric. We cure this disease by introducing ghost fields in such
a way tha... | 1992-02-13 | 2009-10-22 | [
"hep-th"
] | H.O. Girotti, M. Gomes and V.O. Rivelles |
hep-th/9202038 | A Topological Model for Two Dimensional Gravity Coupled to Matter | Starting from a topological gauge theory in two dimensions with symmetry
groups $ISO(2,1)$, $SO(2,1)$ and $SO(1,2)$ we construct a model for gravity
with non-trivial coupling to matter. We discuss the equations of motion which
are connected to those of previous related models but incorporate matter
content. We also dis... | 1992-02-12 | 2009-10-22 | [
"hep-th"
] | L. F. Cugliandolo, F. A. Schaposnik, H. Vucetich |
hep-th/9202039 | On the Classification of Quasihomogeneous Functions | We give a criterion for the existence of a non-degenerate quasihomogeneous
polynomial in a configuration, i.e. in the space of polynomials with a fixed
set of weights, and clarify the relation of this criterion to the necessary
condition derived from the formula for the Poincar\'e polynomial. We further
prove finitenes... | 1992-02-12 | 2015-06-26 | [
"hep-th"
] | Maximilian Kreuzer and Harald Skarke |
hep-th/9202036 | Holonomy groups and W-symmetries | Irreducible sigma models, i.e. those for which the partition function does
not factorise, are defined on Riemannian spaces with irreducible holonomy
groups. These special geometries are characterised by the existence of
covariantly constant forms which in turn give rise to symmetries of the
supersymmetric sigma model a... | 1992-02-12 | 2009-10-09 | [
"hep-th"
] | P.S. Howe and G. Papadopoulos |
hep-th/9202037 | Splitting of an Extremal Reissner-Nordstr\"om Throat via Quantum
Tunneling | The interior near the horizon of an extremal Reissner-Nordstr\"om black hole
is taken as an initial state for quantum mechanical tunneling. An instanton is
presented that connects this state with a final state describing the presence
of several horizons. This is interpreted as a WKB description of fluctuations
due to t... | 1992-02-12 | 2010-11-01 | [
"hep-th"
] | Dieter R. Brill |
hep-th/9202041 | Exact Critical Exponents of the Staircase Model | The staircase model is a recently discovered one-parameter family of
integrable two-dimensional continuum field theories. We analyze the novel
critical behavior of this model, seen as a perturbation of a minimal conformal
theory M_p: the leading thermodynamic singularities are simultaneously governed
by all fixed point... | 1992-02-12 | 2007-05-23 | [
"hep-th"
] | Michael Lassig |
hep-th/9202040 | The Classical Limit of W-Algebras | We define and compute explicitly the classical limit of the realizations of
$W_n$ appearing as hamiltonian structures of generalized KdV hierarchies. The
classical limit is obtained by taking the commutative limit of the ring of
pseudodifferential operators. These algebras---denoted $w_n$---have free field
realizations... | 1992-02-12 | 2009-10-22 | [
"hep-th"
] | Jose M. Figueroa-O'Farrill and Eduardo Ramos |
hep-th/9202034 | Kinks in Finite Volume | A (1+1)-dimensional quantum field theory with a degenerate vacuum (in
infinite volume) can contain particles, known as kinks, which interpolate
between different vacua and have nontrivial restrictions on their
multi-particle Hilbert space. Assuming such a theory to be integrable, we show
how to calculate the multi-kink... | 1992-02-11 | 2009-10-22 | [
"hep-th"
] | Timothy R. Klassen and Ezer Melzer |
hep-th/9202035 | Remarks on the BRST-cohomology for $c_M > 1$ matter coupled to
``Liouville gravity" | We describe the (chiral) BRST-cohomology of matter with central charge
$1<c_M<25$ coupled to a ``Liouville" theory, realized as a free field with a
background charge $Q_L$ such that $c_M+c_L=26$. We consider two cases: a)
matter is realized by one free field with an imaginary background charge, b)
matter is realized by... | 1992-02-11 | 2009-10-22 | [
"hep-th"
] | Adel Bilal |
hep-th/9202033 | The Canonical Structure of Wess-Zumino-Witten Models | The phase space of the Wess-Zumino-Witten model on a circle with target space
a compact, connected, semisimple Lie group $G$ is defined and the corresponding
symplectic form is given. We present a careful derivation of the Poisson
brackets of the Wess-Zumino-Witten model. We also study the canonical structure
of the su... | 1992-02-10 | 2009-10-09 | [
"hep-th"
] | G. Papadopoulos and B. Spence |
hep-th/9202032 | Screening Currents Ward Identity and Integral Formulas for the WZNW
Correlation Functions | We derive, based on the Wakimoto realization, the integral formulas for the
WZNW correlation functions. The role of the ``screening currents Ward
identity'' is demonstrated with explicit examples. We also give a more simple
proof of a previous result. | 1992-02-10 | 2008-11-26 | [
"hep-th"
] | Hidetoshi Awata |
hep-th/9202031 | Black Holes in Higher Derivative Gravity Theories | We study static spherically symmetric solutions of Einstein gravity plus an
action polynomial in the Ricci scalar, $R$, of arbitrary degree, $n$, in
arbitrary dimension, $D$. The global properties of all such solutions are
derived by studying the phase space of field equations in the equivalent theory
of gravity couple... | 1992-02-08 | 2010-11-19 | [
"hep-th"
] | S. Mignemi & D.L. Wiltshire |
hep-th/9202029 | Spin Singlet Quantum Hall Effect and Nonabelian Landau-Ginzburg Theory | In this paper we present a theory of Singlet Quantum Hall Effect (SQHE). We
show that the Halperin-Haldane SQHE wave function can be written in the form of
a product of a wave function for charged semions in a magnetic field and a wave
function for the Chiral Spin Liquid of neutral spin-$\12$ semions. We introduce
fiel... | 1992-02-08 | 2007-05-23 | [
"hep-th"
] | Alexander Balatsky (Los Alamos National Laboratory,Theoretical
Division and Landau Institute for Theoretical Physics, Moscow, USSR) |
hep-th/9202023 | The Emergence of Radiation from Gravitational Potential Wells: The
Absence of $\omega M$ Effects | We consider a source of gravitational waves of frequency $\omega$, located
near the center of a massive galaxy of mass $M$ and radius $R$, with $\omega\gg
R^{-1}$. In the case of a perfect fluid galaxy, and of odd-parity waves, there
is no direct matter-wave interaction and the propagation of the waves is
affected by t... | 1992-02-07 | 2009-10-22 | [
"hep-th"
] | Richard H. Price and Jorge Pullin |
hep-th/9202024 | Spinning Braid Group Representation and the Fractional Quantum Hall
Effect | The path integral approach to representing braid group is generalized for
particles with spin. Introducing the notion of {\em charged} winding number in
the super-plane, we represent the braid group generators as homotopically
constrained Feynman kernels. In this framework, super Knizhnik-Zamolodchikov
operators appear... | 1992-02-07 | 2009-10-22 | [
"hep-th"
] | Christopher Ting and C. H. Lai |
hep-th/9202022 | Recent Developments in Non-Perturbative Quantum Gravity | New results from the new variables/loop representation program of
nonperturbative quantum gravity are presented, with a focus on results of
Ashtekar, Rovelli and the author which greatly clarify the physical
interpretation of the quantum states in the loop representation. These include:
1) The construction of a class o... | 1992-02-07 | 2007-05-23 | [
"hep-th"
] | Lee Smolin |
hep-th/9202025 | BRST Field Theory of Relativistic Particles | A generalization of BRST field theory is presented, based on wave operators
for the fields constructed out of, but different from the BRST operator. We
discuss their quantization, gauge fixing and the derivation of propagators. We
show, that the generalized theories are relevant to relativistic particle
theories in the... | 1992-02-07 | 2011-07-19 | [
"hep-th"
] | J.W. van Holten |
hep-th/9202027 | A Conformal Field Theory for the Quantum Hall Effect | The QHE is studied in the context of a CFT. An effective field of $N$
``spins" associated with the cyclotron motion of particles is taken as an order
parameter from which an effective Hamiltonian may be defined. This effective
Hamiltonian describes the COM motion of the $N$ particles (with coupling
$\kappa_0$) together... | 1992-02-07 | 2007-05-23 | [
"hep-th"
] | G. Nagao |
hep-th/9202028 | RG Flows of Non-Unitary Minimal CFTs | In this paper we study the renormalization group flow of the $(p,q)$ minimal
(non-unitary) CFT perturbed by the $\Phi_{1,3}$ operator with a positive
coupling. In the perturbative region $q>>(q-p)$, we find a new IR fixed point
which corresponds to the $(2p-q,p)$ minimal CFT. The perturbing field near the
new IR fixed ... | 1992-02-07 | 2011-07-19 | [
"hep-th"
] | Changrim Ahn |
hep-th/9202026 | $CP^N$ Model With a Chern-Simons Term | The $CP^N$ model in three euclidean dimensions is studied in the presence of
a Chern-Simons term using the $1/N$ expansion. The $\beta$-function for the CS
coefficient $\theta$ is found to be zero to order $1/N$ in the unbroken phase
by an explicit calculation. It is argued to be zero to all orders. Some remarks
on the... | 1992-02-07 | 2015-06-26 | [
"hep-th"
] | G. Ferretti and S.G. Rajeev |
hep-th/9202030 | Stochastic Quantization of the Chern-Simons Theory | We discuss Stochastic Quantization of $d$=3 dimensional non-Abelian
Chern-Simons theory. We demonstrate that the introduction of an appropriate
regulator in the Langevin equation yields a well-defined equilibrium limit,
thus leading to the correct propagator. We also analyze the connection between
$d$=3 Chern-Simons an... | 1992-02-07 | 2015-06-26 | [
"hep-th"
] | L.F. Cugliandolo, G.L. Rossini and F.A. Schaposnik |
hep-th/9202021 | The Master Equation of 2D String Theory | A general method is presented for deriving on-shell Ward-identities in (2D)
string theory. It is shown that all tree-level Ward identities can be
summarized in a quadratic differential equation for the generating function of
tree-amplitudes. This result is extended to loop amplitudes and leads to a
master equation {\it... | 1992-02-06 | 2009-10-22 | [
"hep-th"
] | Erik Verlinde |
hep-th/9202020 | Thermodynamic Bethe Ansatz for G_k x G_l / G_{k+l} Coset Models
Perturbed by Their \phi_{1,1,Adj} Operator | We propose a Thermodynamic Bethe Ansatz (TBA) for G_k x G_l / G_{k+l}
conformal coset models (G any simply-laced Lie algebra) perturbed by their
operator \phi_{1,1,Adj}. An interesting adjacency structure appears and can be
depicted in a sort of ``product'' of Dynkin diagrams of G and A_{k+l-1}. UV and
IR limits are co... | 1992-02-06 | 2009-10-22 | [
"hep-th"
] | F.Ravanini |
hep-th/9202019 | D=0 Matrix Model as Conjugate Field Theory | The D=0 matrix model is reformulated as a 2d nonlocal quantum field theory.
The interactions occur on the one-dimensional line of hermitian matrix
eigenvalues. The field is conjugate to the density of matrix eigenvalues which
appears in the Jevicki-Sakita collective field theory. The classical solution
of the field equ... | 1992-02-06 | 2009-10-22 | [
"hep-th"
] | Shahar Ben-Menahem (SLAC) |
hep-th/9202015 | Interpolating String Field Theories | A minimal area problem imposing different length conditions on open and
closed curves is shown to define a one parameter family of covariant
open-closed quantum string field theories. These interpolate from a recently
proposed factorizable open-closed theory up to an extended version of Witten's
open string field theor... | 1992-02-05 | 2015-06-26 | [
"hep-th"
] | Barton Zwiebach |
hep-th/9202016 | Path Intergals and Perturbative Expansions for Non-Compact Symmetric
Spaces | We show how to construct path integrals for quantum mechanical systems where
the space of configurations is a general non-compact symmetric space.
Associated with this path integral is a perturbation theory which respects the
global structure of the system. This perturbation expansion is evaluated for a
simple example ... | 1992-02-05 | 2015-06-26 | [
"hep-th"
] | Noah Linden and Malcolm Perry |
hep-th/9202013 | Deformed Conformal and Supersymmetric Quantum Mechanics | Within the standard quantum mechanics a q-deformation of the simplest N=2
supersymmetry algebra is suggested. Resulting physical systems do not have
conserved charges and degeneracies in the spectra. Instead, superpartner
Hamiltonians are q-isospectral, i.e. the spectrum of one can be obtained from
another by the q^2-f... | 1992-02-05 | 2015-06-26 | [
"hep-th"
] | V.Spiridonov |
hep-th/9202014 | Black Holes as Elementary Particles | It is argued that the qualitative features of black holes, regarded as
quantum mechanical objects, depend both on the parameters of the hole and on
the microscopic theory in which it is embedded. A thermal description is
inadequate for extremal holes. In particular, extreme holes of the charged
dilaton family can have ... | 1992-02-05 | 2009-10-22 | [
"hep-th"
] | C.F.E. Holzhey and F. Wilczek |
hep-th/9202018 | Jones Polynomials for Intersecting Knots as Physical States of Quantum
Gravity | We find a consistent formulation of the constraints of Quantum Gravity with a
cosmological constant in terms of the Ashtekar new variables in the connection
representation, including the existence of a state that is a solution to all
the constraints. This state is related to the Chern-Simons form constructed
from the A... | 1992-02-05 | 2008-11-26 | [
"hep-th"
] | Bernd Bruegmann, Rodolfo Gambini, Jorge Pullin |
hep-th/9202017 | Rational Curves on Calabi-Yau Threefolds | By considering mirror symmetry applied to conformal field theories
corresponding to strings propagating in quintic hypersurfaces in projective
4-space, Candelas, de la Ossa, Green and Parkes calculated the ``number of
rational curves on the hypersurface'' by comparing three point functions.
Actually, the number of curv... | 1992-02-05 | 2008-02-03 | [
"hep-th",
"math.AG"
] | Sheldon Katz |
hep-th/9202009 | String Theories on the Asymmetric Orbifolds with Twist-Untwist
Intertwining Currents | We give various examples of asymmetric orbifold models to possess
intertwining currents which convert untwisted string states to twisted ones,
and vice versa, and see that such asymmetric orbifold models are severely
restricted. The existence of the intertwining currents leads to the enhancement
of symmetries in asymme... | 1992-02-04 | 2008-11-26 | [
"hep-th"
] | Y. Imamura, M. Sakamoto, T. Sasada and M. Tabuse |
hep-th/9202010 | Toward a Conformal Field Theory for the Quantum Hall Effect | An effective Hamiltonian for the study of the quantum Hall effect is
proposed. This Hamiltonian, which includes a ``current-current" interaction has
the form of a Hamiltonian for a conformal field theory in the large $N$ limit.
An order parameter is constructed from which the Hamiltonian may be derived.
This order para... | 1992-02-04 | 2015-06-26 | [
"hep-th"
] | G. Nagao |
hep-th/9202011 | Scattering and Thermodynamics of Integrable N=2 Theories | We study $N$=2 supersymmetric integrable theories with spontaneously-broken
\Zn\ symmetry. They have exact soliton masses given by the affine $SU(n)$ Toda
masses and fractional fermion numbers given by multiples of $1/n$. The basic
such $N$=2 integrable theory is the $A_n$-type $N$=2 minimal model perturbed by
the most... | 1992-02-04 | 2009-10-22 | [
"hep-th"
] | P. Fendley and K. Intriligator |
hep-th/9202012 | One-Dimensional Fermions as Two-Dimensional Droplets Via Chern-Simons
Theory | Based on the observation that a particle motion in one dimension maps to a
two-dimensional motion of a charged particle in a uniform magnetic field,
constrained in the lowest Landau level, we formulate a system of one-dimen-
sional nonrelativistic fermions by using a Chern-Simons field theory in 2+1
dimensions. Using a... | 1992-02-04 | 2009-10-22 | [
"hep-th"
] | Satoshi Iso, Dimitra Karabali and B. Sakita |
hep-th/9202007 | Construction of the K=8 Fractional Superconformal Algebras | We construct the K=8 fractional superconformal algebras. There are two such
extended Virasoro algebras, one of which was constructed earlier, involving a
fractional spin (equivalently, conformal dimension) 6/5 current. The new
algebra involves two additional fractional spin currents with spin 13/5. Both
algebras are no... | 1992-02-03 | 2009-10-22 | [
"hep-th"
] | Philip C. Argyres, James M. Grochocinski, and S.-H. Henry Tye |
hep-th/9202008 | Two Dimensional String Theory and the Topological Torus | We analyze topological string theory on a two dimensional torus, focusing on
symmetries in the matter sector. Even before coupling to gravity, the
topological torus has an infinite number of point-like physical observables,
which give rise via the BRST descent equations to an infinite symmetry algebra
of the model. The... | 1992-02-03 | 2009-10-22 | [
"hep-th"
] | Petr Horava |
hep-th/9202004 | Dynamics of Extremal Black Holes | Particle scattering and radiation by a magnetically charged, dilatonic black
hole is investigated near the extremal limit at which the mass is a constant
times the charge. Near this limit a neighborhood of the horizon of the black
hole is closely approximated by a trivial product of a two-dimensional black
hole with a ... | 1992-02-03 | 2009-09-17 | [
"hep-th"
] | S.B. Giddings and A. Strominger |
hep-th/9202006 | A Hint on the External Field Problem for Matrix Models | We reexamine the external field problem for $N\times N$ hermitian one-matrix
models. We prove an equivalence of the models with the potentials
$\tr{({1/over2N}X^2 + \log X - \Lambda X)}$ and $\sum_{k=1}^\infty t_k\tr{X^k}$
providing the matrix $\Lambda$ is related to $\{t_k\}$ by $t_k=\fr 1k
\tr{\Lambda^{-k}}-\frac N2 ... | 1992-02-03 | 2009-10-22 | [
"hep-th"
] | L. Chekhov and Yu. Makeenko |
hep-th/9202005 | Exact Solutions of Four Dimensional Black Holes in String Theory | We construct an exact CFT as an SL(2,R)xSU(2)/U(1)^2 gauged WZW model, which
describes a black hole in 4 dimensions. Another exact solution, describing a
black membrane in 4D (in the sense that the event horizon is an infinite plane)
is found as an SL(2,R)xU(1)^2/U(1) gauged WZW model. Finally, we construct an
exact so... | 1992-02-03 | 2009-10-22 | [
"hep-th"
] | David Gershon |
hep-th/9202003 | Planck-Scale Physics and the Peccei-Quinn Mechanism | Global-symmetry violating higher-dimension operators, expected to be induced
by Planck-scale physics, in general drastically alter the properties of the
axion field associated with the Peccei-Quinn solution to the strong-CP problem,
and render this solution unnatural. The particle physics and cosmology
associated with ... | 1992-02-02 | 2009-10-22 | [
"hep-th"
] | Marc Kamionkowski and John March-Russell |
hep-th/9202002 | Chiral Gauged WZW Theories and Coset Models in Conformal Field Theory | The Wess-Zumino-Witten (WZW) theory has a global symmetry denoted by
$G_L\otimes G_R$. In the standard gauged WZW theory, vector gauge fields (\ie\
with vector gauge couplings) are in the adjoint representation of the subgroup
$H \subset G$. In this paper, we show that, in the conformal limit in two
dimensions, there i... | 1992-02-02 | 2010-01-08 | [
"hep-th"
] | Stephen-wei Chung and S.-H. Henry Tye |
hep-th/9202001 | Fractional quantum Hall effect and nonabelian statistics | It is argued that fractional quantum Hall effect wavefunctions can be
interpreted as conformal blocks of two-dimensional conformal field theory.
Fractional statistics can be extended to nonabelian statistics and examples can
be constructed from conformal field theory. The Pfaffian state is related to
the 2D Ising model... | 1992-02-02 | 2008-11-26 | [
"hep-th"
] | N. Read and G. Moore |
hep-th/9201081 | Comments on Gauged WZW Models | Some remarks are made about free anomaly groups in gauged WZW models.
Considering a quite general action, anomaly cancellation is analyzed. The
possibility of gauging left and right sectors independently in some cases is
remarked. In particular Toda theories can be seen as such a kind of models. | 1992-01-31 | 2007-05-23 | [
"hep-th"
] | Adrian R. Lugo |
hep-th/9201080 | Solutions of the Knizhnik - Zamolodchikov Equation with Rational
Isospins and the Reduction to the Minimal Models | In the spirit of the quantum Hamiltonian reduction we establish a relation
between the chiral $n$-point functions, as well as the equations governing
them, of the $A_1^{(1)}$ WZNW conformal theory and the corresponding Virasoro
minimal models. The WZNW correlators are described as solutions of the Knizhnik
- Zamolodchi... | 1992-01-31 | 2009-10-22 | [
"hep-th"
] | P. Furlan, A. Ch. Ganchev, R. Paunov, V. B. Petkova |
hep-th/9201078 | New Jacobi-Like Identities for Z_k Parafermion Characters | We state and prove various new identities involving the Z_K parafermion
characters (or level-K string functions) for the cases K=4, K=8, and K=16.
These identities fall into three classes: identities in the first class are
generalizations of the famous Jacobi theta-function identity (which is the K=2
special case), ide... | 1992-01-31 | 2010-11-01 | [
"hep-th"
] | Philip C. Argyres, Keith R. Dienes, and S.-H. Henry Tye |
hep-th/9201079 | Fusion and singular vectors in A1{(1)} highest weight cyclic modules | We show how the interplay between the fusion formalism of conformal field
theory and the Knizhnik--Zamolodchikov equation leads to explicit formulae for
the singular vectors in the highest weight representations of A1{(1)}. | 1992-01-31 | 2009-10-22 | [
"hep-th"
] | M. Bauer and N. Sochen |
hep-th/9201077 | Remarks on the Physical States and the Chiral Algebra of 2D Gravity
Coupled to $C \leq 1$ Matter | Some elaboration is given to the structure of physical states in 2D gravity
coupled to $C \leq 1$ matter, and to the chiral algebra ($w_{\infty}$) of
$C_{M} = 1$ theory which has been found recently, in the continuum approach, by
Witten and by Klebanov and Polyakov. It is shown then that the chiral algebra
is being rea... | 1992-01-31 | 2009-10-22 | [
"hep-th"
] | Vl.S.Dotsenko |
hep-th/9201072 | Quantum Rings and Recursion Relations in 2D Quantum Gravity | I study tachyon condensate perturbations to the action of the two dimensional
string theory corresponding to the c=1 matrix model. These are shown to deform
the action of the ground ring on the tachyon modules, confirming a conjecture
of Witten. The ground ring structure is used to derive recursion relations
which rela... | 1992-01-30 | 2009-10-07 | [
"hep-th"
] | Shamit Kachru |
hep-th/9201075 | Topology change in ISO(2,1) Chern-Simons gravity | In 2+1 dimensional gravity, a dreibein and the compatible spin connection can
represent a space-time containing a closed spacelike surface $\Sigma$ only if
the associated SO(2,1) bundle restricted to $\Sigma$ has the same
non-triviality (Euler class) as that of the tangent bundle of $\Sigma.$ We
impose this bundle cond... | 1992-01-30 | 2009-10-22 | [
"hep-th"
] | K.Amano and S.Higuchi |
hep-th/9201076 | Dilaton Contact Terms in the Bosonic and Heterotic Strings | Dilaton contact terms in the bosonic and heterotic strings are examined
following the recent work of Distler and Nelson on the bosonic and semirigid
strings. In the bosonic case dilaton two-point functions on the sphere are
calculated as a stepping stone to constructing a `good' coordinate family for
dilaton calculatio... | 1992-01-30 | 2009-10-22 | [
"hep-th"
] | Mark Doyle (Princeton University) |
hep-th/9201070 | Induced $W_\infty$ Gravity as a WZNW Model | We derive the explicit form of the Wess-Zumino quantum effective action of
chiral $\Winf$-symmetric system of matter fields coupled to a general chiral
$\Winf$-gravity background. It is expressed as a geometric action on a
coadjoint orbit of the deformed group of area-preserving diffeomorphisms on
cylinder whose underl... | 1992-01-29 | 2009-10-22 | [
"hep-th"
] | E.Nissimov, S.Pacheva and I.Vaysburd |
hep-th/9201064 | Perturbing the Ground Ring of 2-D String Theory | We use free field techniques in D=2 string theory to calculate the
perturbation of the special state algebras when the cosmologi- cal constant is
turned on. In particular, we find that the "ground cone" preserved by the ring
structure is promoted to a three dimen- sional hyperboloid as conjectured by
Witten. On the oth... | 1992-01-29 | 2015-06-26 | [
"hep-th"
] | J.L.F. Barb\'on |
hep-th/9201067 | Exact S-Matrices for Nonsimply-Laced Affine Toda Theories | We derive exact, factorized, purely elastic scattering matrices for affine
Toda theories based on the nonsimply-laced Lie algebras and superalgebras. | 1992-01-29 | 2009-10-22 | [
"hep-th"
] | G. W. Delius, M.T. Grisaru and D. Zanon |
hep-th/9201068 | On the Black-Hole Conformal Field Theory Coupled to the Polyakov's
String Theory. A Non Perturbative Analysis | We couple the 2D black-hole conformal field theory discovered by Witten to a
$D-1$ dimensional Euclidean bosonic string. We demonstrate that the resulting
planar (=zero genus) string susceptibility is real for any $0\leq D \leq 4$. | 1992-01-29 | 2015-06-26 | [
"hep-th"
] | M. Martellini, M. Spreafico and K. Yoshida |
hep-th/9201071 | SO(2,C) invariant ring structure of BRST cohomology and singular vectors
in 2D gravity with c < 1 matter | We consider BRST quantized 2D gravity coupled to conformal matter with
arbitrary central charge $c^M = c(p,q) < 1$ in the conformal gauge. We apply a
Lian-Zuckerman $SO(2,\bbc)$ ($(p,q)$ - dependent) rotation to Witten's $c^M =
1$ chiral ground ring. We show that the ring structure generated by the
(relative BRST cohom... | 1992-01-29 | 2011-10-05 | [
"hep-th",
"math.RT"
] | N. Chair, V.K. Dobrev and H. Kanno |
hep-th/9201073 | All-orders wormhole vertex operators from the Wheeler-deWitt equation | We discuss the calculation of semi-classical wormhole vertex operators from
wave functions which satisfy the Wheeler-deWitt equation and momentum
constraints, together with certain `wormhole boundary conditions'. We consider
a massless minimally coupled scalar field, initially in the spherically
symmetric `mini-supersp... | 1992-01-29 | 2008-02-03 | [
"hep-th"
] | Alex Lyons |
hep-th/9201074 | Black Hole Evaporation in 1+1 Dimensions | The formation and quantum mechanical evaporation of black holes in two
spacetime dimensions can be studied using effective classical field equations,
recently introduced by Callan {\it et al.} We find that gravitational collapse
always leads to a curvature singularity, according to these equations, and that
the region ... | 1992-01-29 | 2008-11-26 | [
"hep-th"
] | J. Russo, L. Susskind and L. Thorlacius |
hep-th/9201066 | Interaction of Tachyons and Discrete States in c=1 2-D Quantum Gravity | The two-dimensional (2-D) quantum gravity coupled to the conformal matter
with $c=1$ is studied. We obtain all the three point couplings involving
tachyons and/or discrete states via operator product expansion. We find that
cocycle factors are necessary and construct them explicitly. We obtain an
effective action for t... | 1992-01-29 | 2008-02-03 | [
"hep-th"
] | Yoichiro Matsumura, Norisuke Sakai, Yoshiaki Tanii |
hep-th/9201065 | Coupling of Tachyons and Discrete States in $c = 1$ 2-D Gravity | All the three point couplings involving tachyons and/or discrete states are
obtained in $c=1$ two-dimensional (2-D) quantum gravity by means of the
operator product expansion (OPE). Cocycle factors are found to be necessary in
order to maintain the analytic structure of the OPE, and are constructed
explicitly both for ... | 1992-01-29 | 2009-10-22 | [
"hep-th"
] | Yoichiro Matsumura, Norisuke Sakai, Yoshiaki Tanii |
hep-th/9201069 | A continuum string model for $D>1$ | The non critical string (2D gravity coupled to the matter with central charge
$D$) is quantized taking care of both diffeomorphism and Weyl symmetries. In
incorporating the gauge fixing with respect to the Weyl symmetry, through the
condition $R_g=const$, one modifies the classical result of Distler and Kawai.
In parti... | 1992-01-29 | 2015-06-26 | [
"hep-th"
] | M. Martellini, M. Spreafico and K. Yoshida |
hep-th/9201062 | Poisson bracket algebra for chiral group elements in the WZNW model | We examine the Wess-Zumino-Novikov-Witten (WZNW) model on a circle and
compute the Poisson bracket algebra for left and right moving chiral group
elements. Our computations apply for arbitrary groups and boundary conditions,
the latter being characterized by the monodromy matrix. Unlike in previous
treatments, they do ... | 1992-01-28 | 2015-06-26 | [
"hep-th"
] | G. Bimonte, P. Salomonson, A. Simoni, A. Stern |
hep-th/9201058 | The Secret Chern-Simons Action for the Hot Gluon Plasma | We show that the generating functional for hard thermal loops with external
gluons in QCD is essentially given by the eikonal for a Chern-Simons gauge
theory. This action, determined essentially by gauge invariance arguments, also
gives an efficient way of obtaining the hard thermal loop contributions without
the more ... | 1992-01-28 | 2009-10-22 | [
"hep-th"
] | R.Efraty and V.P.Nair |
hep-th/9201059 | Quantum Hair on Black Holes | A black hole may carry quantum numbers that are {\it not} associated with
massless gauge fields, contrary to the spirit of the ``no-hair'' theorems. We
describe in detail two different types of black hole hair that decay
exponentially at long range. The first type is associated with discrete gauge
charge and the screen... | 1992-01-28 | 2014-11-18 | [
"hep-th"
] | Sidney Coleman, John Preskill, and Frank Wilczek |
hep-th/9201061 | Are Horned Particles the Climax of Hawking Evaporation? | We investigate the proposal by Callan, Giddings, Harvey and Strominger (CGHS)
that two dimensional quantum fluctuations can eliminate the singularities and
horizons formed by matter collapsing on the nonsingular extremal black hole of
dilaton gravity. We argue that this scenario could in principle resolve all of
the pa... | 1992-01-28 | 2009-10-22 | [
"hep-th"
] | T.Banks, A. Dabolkhar, M.R. Douglas, M. O' Loughlin (Rutgers U) |
hep-th/9201056 | Algebraic Structures and Differential Geometry in 2D String Theory | A careful treatment of closed string BRST cohomology shows that there are
more discrete states and associated symmetries in $D=2$ string theory than has
been recognized hitherto. The full structure, at the $SU(2)$ radius, has a
natural description in terms of abelian gauge theory on a certain three
dimensional cone $Q$... | 1992-01-28 | 2010-04-07 | [
"hep-th"
] | Edward Witten and Barton Zwiebach |
hep-th/9201060 | Lax Pair Formulation of the W-gravity Theories in two Dimensions | The Lax pair formulation of the two dimensional induced gravity in the
light-cone gauge is extended to the more general $w_N$ theories. After
presenting the $w_2$ and $w_3$ gravities, we give a general prescription for an
arbitrary $w_N$ case. This is further illustrated with the $w_4$ gravity to
point out some peculia... | 1992-01-28 | 2007-05-23 | [
"hep-th"
] | J.M. Lina and P.K. Panigrahi |
hep-th/9201063 | Are Textures Natural? | We make the simple observation that, because of global symmetry violating
higher-dimension operators expected to be induced by Planck-scale physics,
textures are generically much too short-lived to be of use for large-scale
structure formation. | 1992-01-28 | 2009-10-22 | [
"hep-th"
] | Marc Kamionkowski and John March-Russell |
hep-th/9201057 | Classical and Quantum W-Gravity | Classical W-gravities and the corresponding quantum theories are reviewed.
W-gravities are higher-spin gauge theories in two dimensions whose gauge
algebras are W-algebras. The geometrical structure of classical W-gravity is
investigated, leading to surprising connections with self-dual geometry. The
anomalies that ari... | 1992-01-28 | 2008-02-03 | [
"hep-th"
] | C. M. Hull |
hep-th/9201055 | Addendum to the paper "Combinatorics of the modular group II: the
Kontsevich integrals" | Addendum to the paper Combinatorics of the Modular Group II The Kontsevich
integrals, hep-th/9201001, by C. Itzykson and J.-B. Zuber (3 pages) | 1992-01-27 | 2008-02-03 | [
"hep-th",
"math.QA"
] | C. Itzykson and J.-B. Zuber |
hep-th/9201054 | Temperature Dependence of String Theory in the Presence of World-Sheet
Boundaries | The effect of world-sheet boundaries on the temperature-dependence of bosonic
string theory is studied to first order in string perturbation theory. The
high- temperature behaviour of a theory with Dirichlet boundary conditions has
features suggestive of the high-temperature limit of the confining phase of
large-$n$ $S... | 1992-01-27 | 2010-11-01 | [
"hep-th"
] | Michael B. Green |
hep-th/9201051 | The Lie-Poisson Structure of Integrable Classical Non-Linear Sigma
Models | The canonical structure of classical non-linear sigma models on Riemannian
symmetric spaces, which constitute the most general class of classical
non-linear sigma models known to be integrable, is shown to be governed by a
fundamental Poisson bracket relation that fits into the $r$-$s$-matrix
formalism for non-ultraloc... | 1992-01-24 | 2016-09-06 | [
"hep-th",
"math.QA"
] | M. Bordemann, M. Forger, J. Laartz, U. Schaeper |
hep-th/9201052 | Gauge Transformations in String Field Theory and canonical
Transformation in String Theory | We study how canonical transfomations in first quantized string theory can be
understood as gauge transformations in string field theory. We establish this
fact by working out some examples. As a by product, we could identify some of
the fields appearing in string field theory with their counterparts in the
$\sigma$-mo... | 1992-01-24 | 2009-10-22 | [
"hep-th"
] | J. Maharana and S. mukherji |
hep-th/9201053 | Comments on No-Hair Theorems and Stabilty of Blackholes | In the light of recent blackhole solutions inspired by string theory, we
review some old statements on field theoretic hair on blackholes. We also
discuss some stability issues. In particular we argue that the two dimensional
string blackhole solution is semi-classically stable while the naked
singularity is unstable t... | 1992-01-24 | 2009-10-22 | [
"hep-th"
] | S.P. de Alwis |
hep-th/9201050 | The Complete Spectrum of the $W_N$ String | We obtain the complete physical spectrum of the $W_N$ string, for arbitrary
$N$. The $W_N$ constraints freeze $N-2$ coordinates, while the remaining
coordinates appear in the currents only {\it via} their energy-momentum tensor.
The spectrum is then effectively described by a set of ordinary Virasoro-like
string theori... | 1992-01-24 | 2009-10-07 | [
"hep-th"
] | H. Lu, C.N. Pope, S. Schrans and K.W. Xu |
hep-th/9201047 | Duality-Invariant Gaugino Condensation and One-Loop Corrected Kahler
Potentials in String Theory | The duality-invariant gaugino condensation with or without massive matter
fields is re-analysed, taking into account the dependence of the string
threshold corrections on the moduli fields and recent results concerning
one-loop corrected K\"ahler potentials. The scalar potential of the theory for
a generic superpotenti... | 1992-01-23 | 2009-10-07 | [
"hep-th"
] | Dieter L\"ust and Carlos Mu\~noz |
hep-th/9201048 | The Chern-Simons Source as a Conformal Family and Its Vertex Operators | In a previous work, a straightforward canonical approach to the source-free
quantum Chern-Simons dynamics was developed. It makes use of neither gauge
conditions nor functional integrals and needs only ideas known from QCD and
quantum gravity. It gives Witten's conformal edge states in a simple way when
the spatial sli... | 1992-01-23 | 2015-06-26 | [
"hep-th"
] | A.P.Balachandran, G.Bimonte, K.S.Gupta and A.Stern |
hep-th/9201049 | Light-Cone Gauge for 1+1 Strings | Explicit construction of the light-cone gauge quantum theory of bosonic
strings in 1+1 spacetime dimensions reveals unexpected structures. One is the
existence of a gauge choice that gives a free action at the price of
propagating ghosts and a nontrivial BRST charge. Fixing this gauge leaves a
U(1) Kac-Moody algebra of... | 1992-01-23 | 2009-10-22 | [
"hep-th"
] | Eric Smith |
hep-th/9201043 | The phase of scalar field wormholes at one loop in the path integral
formulation for Euclidean quantum gravity | We here calculate the one-loop approximation to the Euclidean Quantum Gravity
coupled to a scalar field around the classical Carlini and Miji\'c wormhole
solutions. The main result is that the Euclidean partition functional $Z_{EQG}$
in the ``little wormhole'' limit is real. Extension of the CM solutions with
the inclu... | 1992-01-22 | 2010-04-06 | [
"hep-th"
] | Alberto Carlini and Maurizio Martellini |
hep-th/9201046 | String Motion in Fivebrane Geometry | The classical motion of a test string in the transverse space of two types of
heterotic fivebrane sources is fully analyzed, for arbitrary instanton scale
size. The singular case is treated as a special case and does not arise in the
continuous limit of zero instanton size. We find that the orbits are either
circular o... | 1992-01-22 | 2010-11-19 | [
"hep-th"
] | Ramzi R. Khuri and HoSeong La |
hep-th/9201041 | On the Background Independence of String Field Theory: III. Explicit
Field Redefinitions | Given two conformal field theories related to each other by a marginal
perturbation, and string field theories constructed around such backgrounds, we
show how to construct explicit redefinition of string fields which relate these
two string field theories. The analysis is carried out completely for quadratic
and cubic... | 1992-01-22 | 2009-09-15 | [
"hep-th"
] | Ashoke Sen |
hep-th/9201045 | Orbits of a String around a Fivebrane | The classical orbits of a test string in the transverse space of a singular
heterotic fivebrane source are classified. The orbits are found to be either
circular or open, but not conic because the inverse square law is not satisfied
at long range. This result differs from predictions of General Relativity. The
conserve... | 1992-01-22 | 2009-10-22 | [
"hep-th"
] | Ramzi R. Khuri and HoSeong La |
hep-th/9201042 | Stabilizing the gravitational action and Coleman's solution to the
cosmological constant problem | We use the 5-th time action formalism introduced by Halpern and Greensite to
stabilize the unbounded Euclidean 4-D gravity in two simple minisuperspace
models. In particular, we show that, at the semiclassical level ($\hbar
\rightarrow 0$), we still have as a leading saddle point the $S^4$ solution and
the Coleman peak... | 1992-01-22 | 2009-10-22 | [
"hep-th"
] | Alberto Carlini and Maurizio Martellini |
hep-th/9201044 | Strings below the Planck scale | We show that, for a class of critical strings in ${\bf R}\times S^{1}$-target
space, the description of string theory given by its field content (analog
model) breaks down when the radius of $S^{1}$ decreases below
$R_{0}=\sqrt{\alpha^{\prime}}$, the self-dual point of the partition function
$Z(R)$. We find that $Z(R)$... | 1992-01-22 | 2010-11-01 | [
"hep-th"
] | M.A.R. Osorio and M.A. Vazquez-Mozo |
hep-th/9201039 | Exact Bosonic and Supersymmetric String Black Hole Solutions | We show that Witten's two-dimensional string black hole metric is exactly
conformally invariant in the supersymmetric case. We also demonstrate that this
metric, together with a recently proposed exact metric for the bosonic case,
are respectively consistent with the supersymmetric and bosonic $\sigma$-model
conformal ... | 1992-01-21 | 2009-10-22 | [
"hep-th"
] | I. Jack, D. R. T. Jones and J. Panvel |
hep-th/9201038 | Rational vs Polynomial Character of W$_n^l$-Algebras | The constraints proposed recently by Bershadsky to produce $W^l_n$ algebras
are a mixture of first and second class constraints and are degenerate. We show
that they admit a first-class subsystem from which they can be recovered by
gauge-fixing, and that the non-degenerate constraints can be handled by
previous methods... | 1992-01-21 | 2009-10-22 | [
"hep-th"
] | L. Feher, L. O'Raifeartaigh, P. Ruelle and I. Tsutsui |
hep-th/9201040 | Target Space Duality as a Symmetry of String Field Theory | Toroidal backgrounds for bosonic strings are used to understand target space
duality as a symmetry of string field theory and to study explicitly issues in
background independence. Our starting point is the notion that the string field
coordinates $X(\sigma)$ and the momenta $P(\sigma)$ are background independent
objec... | 1992-01-21 | 2010-11-01 | [
"hep-th"
] | Taichiro Kugo and Barton Zwiebach |
hep-th/9201037 | String Field Theory for d \leq 0 Matrix Models via Marinari-Parisi | We generalize the Marinari-Parisi definition for pure two dimensional quantum
gravity $(k = 2)$ to all non unitary minimal multicritical points $(k \geq 3)$.
The resulting interacting Fermi gas theory is treated in the collective field
framework. Making use of the fact that the matrices evolve in Langevin time,
the Jac... | 1992-01-20 | 2009-10-22 | [
"hep-th"
] | Joshua Feinberg |
hep-th/9201036 | $G/G$--Topological Field Theories by Cosetting $G_k$ | $G/G$ topological field theories based on $G_k$ WZW models are constructed
and studied. These coset models are formulated as Complex BRST cohomology in
$G^c_k$, the complexified level $k$ current algebra. The finite physical
spectrum corresponds to the conformal blocks of $G_k$ .The amplitudes for $G/G$
theories are ar... | 1992-01-19 | 2009-10-22 | [
"hep-th"
] | Mordechai Spiegelglas and Shimon Yankielowicz |
hep-th/9201034 | Spectrum of Two-Dimensional (Super)Gravity | We review the BRST analysis of the system of a (super)conformal matter
coupled to 2D (super)gravity. The spectrum and its operator realization are
reported. In particular, the operators associated with the states of nonzero
ghost number are given. We also discuss the ground ring structure of the
super-Liouville coupled... | 1992-01-17 | 2008-11-26 | [
"hep-th"
] | Katsumi Itoh and Nobuyoshi Ohta |
hep-th/9201033 | The Multicritical Kontsevich-Penner Model | We consider the hermitian matrix model with an external field entering the
quadratic term $\tr(\Lambda X\Lambda X)$ and Penner--like interaction term
$\alpha N(\log(1+X)-X)$. An explicit solution in the leading order in $N$ is
presented. The critical behaviour is given by the second derivative of the free
energy in $\a... | 1992-01-16 | 2015-06-26 | [
"hep-th"
] | L. Chekhov and Yu. Makeenko |
hep-th/9201032 | The thermodynamic Bethe ansatz for deformed W$A_{N-1}$ conformal field
theories | We propose and investigate the thermodynamic Bethe ansatz equations for the
minimal $W_p^N$ models~(associated with the $A_{N-1}$ Lie algebra) perturbed by
the least~($Z_N$ invariant) primary field $\Phi_N$. Our results reproduce the
expected ultraviolet and infrared regimes. In particular for the positive sign
of the ... | 1992-01-16 | 2015-06-26 | [
"hep-th"
] | Marcio J. Martins |
hep-th/9201035 | Separation of variables for the classical and quantum Neumann model | The method of separation of variables is shown to apply to both the classical
and quantum Neumann model. In the classical case this nicely yields the
linearization of the flow on the Jacobian of the spectral curve. In the quantum
case the Schr\"odinger equation separates into one--dimensional equations
belonging to the... | 1992-01-16 | 2009-10-22 | [
"hep-th"
] | O. Babelon and M. Talon |
hep-th/9201031 | New Solutions to the Yang--Baxter Equation from Two--Dimensional
Representations of $U_q(sl(2))$ at Roots of Unit | We present particularly simple new solutions to the Yang--Baxter equation
arising from two--dimensional cyclic representations of quantum $SU(2)$. They
are readily interpreted as scattering matrices of relativistic objects, and the
quantum group becomes a dynamical symmetry. | 1992-01-16 | 2009-10-22 | [
"hep-th"
] | M.~Ruiz--Altaba |
hep-th/9201030 | Supersymmetric Construction of W-Algebras from Super Toda and Wznw
Theories | A systematic construction of super W-algebras in terms of the WZNW model
based on a super Lie algebra is presented. These are shown to be the symmetry
structure of the super Toda models, which can be obtained from the WZNW theory
by Hamiltonian reduction. A classification, according to the conformal spin
defined by an ... | 1992-01-16 | 2015-06-26 | [
"hep-th"
] | L.A. Ferreira, J.F. Gomes, R.M. Ricotta and A.H. Zimerman |
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