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 |
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hep-th/9209037 | A Derivation of the BRST Operator for Non-Critical W-Strings | We derive the recently proposed BRST charge for non-critical W strings from a
Lagragian approach. The basic observation is that, despite appearances, the
combination of two classical ``matter'' and ``Toda'' w_3 systems leads to a
closed modified gauge algebra, which is of the so-called soft type. Based on
these observa... | 1992-09-11 | 2009-10-22 | [
"hep-th"
] | E. Bergshoeff, A. Sevrin and X. Shen |
hep-th/9209039 | Quantum Mechanics with Explicit Time Dependence | We investigate quantum mechanical Hamiltonians with explicit time dependence.
We find a class of models in which an analogue of the time independent \S
equation exists. Among the models in this class is a new exactly soluble model,
the harmonic oscillator with frequency inversely proportional to time. | 1992-09-11 | 2009-10-22 | [
"hep-th"
] | John Rogers and Donald Spector |
hep-th/9209035 | BRST Quantization of 2d-Yang Mills Theory with Anomalies | In this paper we discuss the BRST-quantization of anomalous 2d-Yang Mills
(YM) theory. Since we use an oscillator basis for the YM-Fock-space the anomaly
appears already for a pure YM-system and the constraints form a Kac-Moody
algebra with negative central charge. We also discuss the coupling of chiral
fermions and fi... | 1992-09-11 | 2011-07-19 | [
"hep-th"
] | Wolfgang Kalau |
hep-th/9209034 | Semi-infinite cohomology in conformal field theory and 2d gravity | We discuss various techniques for computing the semi-infinite cohomology of
highest weight modules which arise in the BRST quantization of two dimensional
field theories. In particular, we concentrate on two such theories -- the $G/H$
coset models and $2d$ gravity coupled to $c\leq 1$ conformal matter. (to appear
in th... | 1992-09-11 | 2009-09-11 | [
"hep-th"
] | Peter Bouwknegt, Jim McCarthy, and Krzysztof Pilch |
hep-th/9209038 | Functional determinant and Green functions for a fermionic gauge theory
on the disk | We study a theory of Dirac fermions on a disk in presence of an
electromagnetic field. Using the heat-kernel technique we compute the
functional determinant which results after decoupling the zero-flux gauge
degrees of freedom from the fermions. We also compute the Green functions of
the remaining fermionic theory with... | 1992-09-10 | 2009-10-22 | [
"hep-th"
] | Enrique F. Moreno |
hep-th/9209032 | Pair Creation of Open Strings in an Electric Field | We calculate exactly the rate of pair production of open bosonic and
supersymmetric strings in a constant electric field. The rate agrees with
Schwinger's classic result in the weak-field limit, but diverges when the
electric field approaches some critical value of the order of the string
tension. (Phyzzx file) | 1992-09-10 | 2009-10-22 | [
"hep-th"
] | C. Bachas and M. Porrati |
hep-th/9209033 | Non-perturbative interactions in string theory | New non-perturbative interactions in the effective action of two dimensional
string theory are described. These interactions are due to ``stringy"
instantons | 1992-09-10 | 2009-10-22 | [
"hep-th"
] | R. Brustein and B. Ovrut |
hep-th/9209031 | Invariants of 2+1 Quantum Gravity | In [1,2] we established and discussed the algebra of observables for 2+1
gravity at both the classical and quantum level. Here our treatment broadens
and extends previous results to any genus $g$ with a systematic discussion of
the centre of the algebra. The reduction of the number of independent
observables to $6g-6 (... | 1992-09-10 | 2009-10-22 | [
"hep-th",
"gr-qc"
] | J.E.Nelson and T.Regge |
hep-th/9209029 | A Note on the Algebraic Evaluation of Correlators in Local Chiral
Conformal Field Theory | We comment on a program designed for the study of local chiral algebras and
their representations in 2D conformal field theory. Based on the algebraic
approach described by W. Nahm, this program efficiently calculates arbitrary
n-point functions of these algebras. The program is designed such that
calculations involvin... | 1992-09-09 | 2008-02-03 | [
"hep-th"
] | A. Honecker |
hep-th/9209030 | Representations of $N=1$ Extended Superconformal Algebras with Two
Generators | In this paper we consider the representation theory of N=1 Super-W-algebras
with two generators for conformal dimension of the additional superprimary
field between two and six. In the superminimal case our results coincide with
the expectation from the ADE-classification. For the parabolic algebras we find
a finite nu... | 1992-09-09 | 2015-02-03 | [
"hep-th"
] | W. Eholzer, A. Honecker, R. Huebel |
hep-th/9209028 | The radial gauge propagators in quantum gravity | We give a general procedure for extracting the propagators in gauge theories
in presence of a sharp gauge fixing and we apply it to derive the propagators
in quantum gravity in the radial gauge, both in the first and in the second
order formalism in any space-time dimension. In the three dimensional case such
propagato... | 1992-09-09 | 2009-10-22 | [
"hep-th"
] | P. Menotti, G. Modanese and D. Seminara |
hep-th/9209024 | Quantum Soliton Mass Corrections in SL(N) Affine Toda Theory | The first quantum mass corrections for the solitons of complex $sl(n)$ affine
Toda field theory are calculated. The corrections are real and preserve the
classical mass ratios. The formalism also proves that the solitons are
classically stable. | 1992-09-08 | 2009-10-22 | [
"hep-th"
] | Timothy Hollowood |
hep-th/9209022 | Perturbative analysis of an n-Ising model on a random surface | Two dimensional quantum gravity coupled to a conformally invariant matter
field of central charge c=n/2, is represented, in a discretized version, by n
independent Ising spins per cell of the triangulations of a random surface. The
matrix integral representation of this model leads to a diagrammatic expansion
at large ... | 1992-09-08 | 2009-10-22 | [
"hep-th"
] | Shinobu Hikami and Edouard Br\'ezin |
hep-th/9209025 | Renormalization of Couplings in Embedded Random Surfaces | We study the dressing of operators and flows of corresponding couplings in
models of {\it embedded} random surfaces. We show that these dressings can be
obtained by applying the methods of David and Distler and Kawai. We consider
two extreme limits. In the first limit the string tension is large and the
dynamics is dom... | 1992-09-08 | 2015-06-26 | [
"hep-th"
] | Sumit R. Das and S. Kalyana Rama |
hep-th/9209023 | String vacuum backgrounds with covariantly constant null Killing vector
and 2d quantum gravity | We consider a $2d$ sigma model with a $2+N$ - dimensional Minkowski signature
target space metric having a covariantly constant null Killing vector. We study
solutions of the conformal invariance conditions in $2+N$ dimensions and find
that generic solutions can be represented in terms of the RG flow in $N$ -
dimension... | 1992-09-08 | 2009-09-17 | [
"hep-th"
] | A.A. Tseytlin |
hep-th/9209027 | Two dimensional baryons in the large N limit | We propose a bilocal field theory for mesons in two dimensions obtained as a
kind of non local bosonization of two dimensional QCD. Its semi-classical
expansion is equivalent to the $1/N_c$ expansion of QCD. Using an ansatz we
reduce the classical equation of motion of this theory in the baryon number one
sector to a r... | 1992-09-08 | 2019-08-17 | [
"hep-th"
] | P.F.Bedaque, I.Horvath, S.G.Rajeev |
hep-th/9209026 | Gauge Invariance in Chern-Simons Systems | We show explicitly that the question of gauge invariance of the effective
potential in standard scalar electrodynamics remains unchanged despite the
introduction of the Chern-Simons term. The result does not depend on the
presence of the Maxwell term in the Chern-Simons territory. | 1992-09-08 | 2009-10-22 | [
"hep-th"
] | D. Bazeia |
hep-th/9209021 | Laurent Series Representation for the Open Superstring Free Energy | Open superstrings at non-zero temperature are considered. A novel
representation for the free energy (Laurent series representation) is
constructed. It is shown that the Hagedorn temperature arises in this formalism
as the convergence condition (specifically, the radius of convergence) of the
Laurent series. | 1992-09-07 | 2009-09-17 | [
"hep-th"
] | A.A. Bytsenko, E. Elizalde, S.D. Odintsov nd S. Zerbini |
hep-th/9209020 | Fractionally Charged Particles and Supersymmetry Breaking in 4D Strings | Four-dimensional string theories predict in general the existence of light
exotic particles with fractional electric charges. Such particles could escape
present observations if they are confined by a gauge group of the "hidden"
sector into integrally charged states. It is conceivable that the same gauge
group is also ... | 1992-09-07 | 2009-10-22 | [
"hep-th",
"hep-ph"
] | I.Antoniadis and K. Benakli |
hep-th/9209019 | Continuum Limit of Spin-1 Chain (the only change is added references) | We study the continuum limit of the spin-1 chain in the non-Abelian
bosonization approach of Affleck and show that the Hamiltonian of integrable
spin-1 chain yields the Lagrangian of supersymmetric sine-Gordon model in the
zero lattice spacing limit. We also show that the quantum group generators of
the spin-1 chain gi... | 1992-09-07 | 2008-02-03 | [
"hep-th",
"cond-mat"
] | Takeo Inami and Satoru Odake |
hep-th/9209018 | The Construction of Mirror Symmetry | The construction of mirror symmetry in the heterotic string is reviewed in
the context of Calabi-Yau and Landau-Ginzburg compactifications. This framework
has the virtue of providing a large subspace of the configuration space of the
heterotic string, probing its structure far beyond the present reaches of
solvable mod... | 1992-09-06 | 2007-05-23 | [
"hep-th"
] | Rolf Schimmrigk |
hep-th/9209015 | Free Boson Representation of $q$-Vertex Operators and their Correlation
Functions | A bosonization scheme of the $q$-vertex operators of $\uqa$ for arbitrary
level is obtained. They act as intertwiners among the highest weight modules
constructed in a bosonic Fock space. An integral formula is proposed for
$N$-point functions and explicit calculation for two-point function is
presented. | 1992-09-05 | 2009-10-22 | [
"hep-th"
] | Akishi Kato, Yas-Hiro Quano and Jun'ichi Shiraishi |
hep-th/9209017 | The geometry of supersymmetric coset models and superconformal algebras | An on-shell formulation of (p,q), 2\leq p \leq 4, 0\leq q\leq 4,
supersymmetric coset models with target space the group G and gauge group a
subgroup H of G is given. It is shown that there is a correspondence between
the number of supersymmetries of a coset model and the geometry of the coset
space G/H. The algebras o... | 1992-09-05 | 2009-10-09 | [
"hep-th"
] | G. Papadopoulos |
hep-th/9209016 | Quantization of Dyon Charge and Electric-Magnetic Duality in String
Theory | We analyze the allowed spectrum of electric and magnetic charges carried by
dyons in (toroidally compactified) heterotic string theory in four dimensions
at arbitrary values of the string coupling constant and $\theta$ angle. The
spectrum is shown to be invariant under electric-magnetic duality
transformation, thereby ... | 1992-09-05 | 2009-09-15 | [
"hep-th"
] | Ashoke Sen |
hep-th/9209014 | Free Boson Representation of $U_{q}(\hat{sl_{2}})$ | A representation of the quantum affine algebra $U_{q}(\hat{sl_{2}})$ of an
arbitrary level $k$ is realized in terms of three boson fields, whose $q
\rightarrow 1$ limit becomes the Wakimoto representation. An analogue of the
screening current is also obtained. It commutes with the action of
$U_{q}(\hat{sl_{2}})$ modulo... | 1992-09-05 | 2008-02-03 | [
"hep-th"
] | J. Shiraishi |
hep-th/9209012 | Cosmic Censorship in Two-Dimensional Gravity | A weak version of the cosmic censorship hypothesis is implemented as a set of
boundary conditions on exact semi-classical solutions of two-dimensional
dilaton gravity. These boundary conditions reflect low-energy matter from the
strong coupling region and they also serve to stabilize the vacuum of the
theory against de... | 1992-09-04 | 2009-10-07 | [
"hep-th"
] | J. Russo, L. Susskind and L. Thorlacius |
hep-th/9209013 | The String Universe: High $T_c$ Superconductor or Quantum Hall
Conductor? | Our answer is the latter. Space-time singularities, including the initial
one, are described by world-sheet topological Abelian gauge theories with a
Chern-Simons term. Their effective $N=2$ supersymmetry provides an initial
fixed point where the Bogomolny bound is saturated on the world-sheet,
corresponding to an extr... | 1992-09-04 | 2016-09-06 | [
"hep-th"
] | John Ellis, N.E. Mavromatos, D.V. Nanopoulos |
hep-th/9209011 | The Complete Structure of the Cohomology Ring and Associated Symmetries
in $D=2$ String Theory | We determine explicitly all structure constants of the whole chiral BRST
cohomology ring in $D=2$ string theory including both the discrete states and
tachyon states. This is made possible by establishing several identities for
Schur polynomials with operator argument and exploring associativity.
Furthermore we find th... | 1992-09-04 | 2009-10-22 | [
"hep-th"
] | Yong-Shi Wu and Chuan-Jie Zhu |
hep-th/9209010 | Factorization and Discrete States in C=1 Superliouville Theory | We study the discrete state structure of $\hat c=1$ superconformal matter
coupled to 2-D supergravity. Factorization properties of scattering amplitudes
are used to identify these states and to construct the corresponding vertex
operators. For both Neveu-Schwarz and Ramond sectors these states are shown to
be organized... | 1992-09-02 | 2015-06-26 | [
"hep-th"
] | G. Aldazabal, M.Bonini, J.M.Maldacena |
hep-th/9209007 | BRST-anti-BRST Antifield formalism : The Example of the
Freedman-Townsend Model | The general BRST-anti-BRST construction in the framework of the
antifield-antibracket formalism is illustrated in the case of the
Freedmann-Townsend model. | 1992-09-02 | 2009-10-22 | [
"hep-th"
] | G. Barnich, R.Constantinescu and P. Gregoire |
hep-th/9209008 | Semiclassical Approach to Black Hole Evaporation | Black hole evaporation may lead to massive or massless remnants, or naked
singularities. This paper investigates this process in the context of two quite
different two dimensional black hole models. The first is the original CGHS
model, the second is another two dimensional dilaton-gravity model, but with
properties mu... | 1992-09-02 | 2010-11-01 | [
"hep-th",
"gr-qc"
] | David A. Lowe |
hep-th/9209009 | Deformation of the Wakimoto construction | We present the extension of the Wakimoto construction to the $su(2)_k$
quantum current algebra and its associated $Z_k$ quantum parafermion algebra.
This construction is achieved in terms of various deformations of three
classical free boson fields. We also give the vertex operators corresponding to
the quantum spin-$j... | 1992-09-02 | 2015-06-26 | [
"hep-th"
] | A. Abada, A.H. bougourzi and M.A. El Gradechi |
hep-th/9209006 | R-Matrix Formulation of KP Hierarchies and their Gauge Equivalence | The Adler-Kostant-Symes $R$-bracket scheme is applied to the algebra of
pseudo-differential operators to relate the three integrable hierarchies: KP
and its two modifications, known as nonstandard integrable models. All three
hierarchies are shown to be equivalent and connection is established in the
form of a symplect... | 1992-09-01 | 2009-10-22 | [
"hep-th"
] | H. Aratyn, E. Nissimov, S. Pacheva and I. Vaysburd |
hep-th/9209001 | Explicit Construction of Spin 4 Casimir Operator in the Coset Model $
\hat{SO} (5)_{1} \times \hat{SO} (5)_{m} / \hat{SO} (5)_{1+m} $ | We generalize the Goddard-Kent-Olive (GKO) coset construction to the
dimension 5/2 operator for $ \hat{so} (5) $ and compute the fourth order
Casimir invariant in the coset model $\hat{SO} (5)_{1} \times \hat{SO}
(5)_{m} / \hat{SO} (5)_{1+m} $ with the generic unitary minimal $ c < 5/2 $
series that can be viewed as ... | 1992-09-01 | 2009-10-22 | [
"hep-th"
] | Changhyun Ahn |
hep-th/9208080 | Correlation Functions in Two-Dimensional Dilaton Gravity | The Liouville approach is applied to the quantum treatment of the dilaton
gravity in two dimensions. The physical states are obtained from the BRST
cohomology and correlation functions are computed up to three-point functions.
For the $N=0$ case (i.e., without matter), the cosmological term operator is
found to have th... | 1992-09-01 | 2015-06-26 | [
"hep-th"
] | Y. Matsumura, N. Sakai, Y. Tanii and T. Uchino |
hep-th/9209002 | A geometrical interpretation of classical W-transformations | We give a simple geometrical interpretation of classical $\W$-transformations
as deformations of constant energy surfaces by canonical transformations on a
two-dimensional phase space. | 1992-09-01 | 2009-10-22 | [
"hep-th"
] | J.M. Figueroa-O'Farrill, E. Ramos, and S. Stanciu |
hep-th/9209004 | Group Theoretical Symmetries and Generalized Baecklund Transformations
for Integrable Systems | We present a notion of symmetry for 1+1-dimensional integrable systems which
is consistent with their group theoretic description and reproduces in special
cases the known Baecklund transformation for the generalized Korteweg-deVries
hierarchies. We also apply it to the relativistic invariance of the
Leznov-Saveliev sy... | 1992-09-01 | 2009-10-22 | [
"hep-th"
] | G. Haak |
hep-th/9209005 | Two-Loop Analysis of Non-abelian Chern-Simons Theory | Perturbative renormalization of a non-Abelian Chern-Simons gauge theory is
examined. It is demonstrated by explicit calculation that, in the pure
Chern-Simons theory, the beta-function for the coefficient of the Chern-Simons
term vanishes to three loop order. Both dimensional regularization and
regularization by introd... | 1992-09-01 | 2009-10-22 | [
"hep-th"
] | Wei Chen, Gordon W. Semenoff and Yong-Shi Wu |
hep-th/9208081 | c = 1 Two Dimensional Quantum Gravity | The continuum (Liouville) approach to the two-dimensional (2-D) quantum
gravity is reviewed with particular attention to the $c=1$ conformal matter
coupling, and new results on a related problem of dilaton gravity are reported.
After finding the physical states, we examine the procedure to compute
correlation functions... | 1992-09-01 | 2009-10-22 | [
"hep-th"
] | Norisuke Sakai |
hep-th/9209003 | Fermions in the Lowest Landau Level: Bosonization, $W_{\infty}$ Algebra,
Droplets, Chiral Boson | We present field theoretical descriptions of massless (2+1) dimensional
nonrelativistic fermions in an external magnetic field, in terms of a fermionic
and bosonic second quantized language. An infinite dimensional algebra,
$W_{\infty}$, appears as the algebra of unitary transformations which preserve
the lowest Landau... | 1992-09-01 | 2009-10-22 | [
"hep-th"
] | Satoshi Iso, Dimitra Karabali and B. Sakita |
hep-th/9208078 | Electric-Magnetic Duality and Supersymmetry in Stringy Black Holes | We present a generalization of the $U(1)^{2}$ charged dilaton black holes
family whose main feature is that both $U(1)$ fields have electric and magnetic
charges, the axion field still being trivial. We show the supersymmetry of
these solutions in the extreme case, in which the corresponding generalization
of the Bogom... | 1992-08-31 | 2016-08-14 | [
"hep-th"
] | Tom\'as Ort\'in |
hep-th/9208079 | Free Field Representation of Quantum Affine Algebra U_q(\hat{sl}_2) | A Fock representation of the quantum affine algebra $U_q(\widehat{\sl}_2)$ is
constructed by three bosonic fields for an arbitrary level with the help of the
Drinfeld realization. | 1992-08-31 | 2009-10-22 | [
"hep-th"
] | A. Matsuo |
hep-th/9208077 | The Topography of $\W_\infty$-Type Algebras | We chart out the landscape of $\Winfty$-type algebras using $\Wkpq$---a
recently discovered one-parameter deformation of $\W_{\rm KP}$. We relate all
hitherto known $\Winfty$-type algebras to $\Wkpq$ and its reductions,
contractions, and/or truncations at special values of the parameter. | 1992-08-28 | 2009-10-22 | [
"hep-th"
] | J.M. Figueroa-O'Farrill, J. Mas, and E. Ramos |
hep-th/9208074 | Locally supersymmetric D=3 non-linear sigma models | We study non-linear sigma models with N local supersymmetries in three
space-time dimensions. For N=1 and 2 the target space of these models is
Riemannian or Kahler, respectively. All N>2 theories are associated with
Einstein spaces. For N=3 the target space is quaternionic, while for N=4 it
generally decomposes into t... | 1992-08-28 | 2008-11-26 | [
"hep-th"
] | B. de Wit, A.K. Tollsten and H. Nicolai |
hep-th/9208076 | On Cosmological String Backgrounds with Toroidal Isometries | A large class of cosmological solutions (of the Einstein equations) in string
theory, in the presence of Maxwell fields, is obtained by $O(d,d)$
transformations of simple backgrounds with $d$ toroidal isometries. In all the
examples in which we find a (closed) expanding universe, such that the universe
admits a smooth,... | 1992-08-28 | 2011-07-19 | [
"hep-th"
] | Amit Giveon and Andrea Pasquinucci |
hep-th/9208075 | Canonical Quantization of the Liouville Theory, Quantum Group
Structures, and Correlation Functions | We describe a self-consistent canonical quantization of Liouville theory in
terms of canonical free fields. In order to keep the non-linear Liouville
dynamics, we use the solution of the Liouville equation as a canonical
transformation. This also defines a Liouville vertex operator. We show, in
particular, that a canon... | 1992-08-28 | 2008-02-03 | [
"hep-th"
] | Gerhard Weigt |
hep-th/9208068 | Dual formulation of classical W-algebras | By extending the concept of \mc, I introduce a dual formulation of
(classical) nonlinear extensions of the \vir\ algebra. This dual formulation is
closely related to three dimensional actions which are analogous to a \cs\
action. I present an explicit construction in terms of superfields of the $N=2$
super \wfour. | 1992-08-27 | 2009-10-22 | [
"hep-th"
] | Robert Perret |
hep-th/9208067 | Structure of the space of states in RSOS models | The restricted solid-on-solid models in the anti-ferromagnetic regime is
studied in the framework of quantum affine algebras. Following the line
developed recently for vertex models, a representation theoretical picture is
presented for the structure of the space of states. The local operators and the
creation/annihila... | 1992-08-27 | 2009-10-22 | [
"hep-th",
"nlin.SI",
"solv-int"
] | Michio Jimbo, Tetsuji Miwa and Yasuhiro Ohta |
hep-th/9208072 | Superconformally covariant operators and super W algebras | We study superdifferential operators of order $2n+1$ which are covariant with
respect to superconformal changes of coordinates on a compact super Riemann
surface. We show that all such operators arise from super M\"obius covariant
ones. A canonical matrix representation is presented and applications to
classical super ... | 1992-08-27 | 2009-10-22 | [
"hep-th"
] | Francois Gieres and Stefan Theisen |
hep-th/9208066 | Quantum affine symmetry in vertex models | We study the higher spin anologs of the six vertex model on the basis of its
symmetry under the quantum affine algebra $U_q(\slth)$. Using the method
developed recently for the XXZ spin chain, we formulate the space of states,
transfer matrix, vacuum, creation/annihilation operators of particles, and
local operators, p... | 1992-08-27 | 2015-06-26 | [
"hep-th"
] | Makoto Idzumi, Kenji Iohara, Michio Jimbo, Tetsuji Miwa, Toshiki
Nakashima and Tetsuji Tokihiro |
hep-th/9208073 | Deformation of Supersymmetric and Conformal Quantum Mechanics Through
Affine Transformations | Affine transformations (dilatations and translations) are used to define a
deformation of one-dimensional $N=2$ supersymmetric quantum mechanics.
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... | 1992-08-27 | 2011-03-02 | [
"hep-th"
] | V.Spiridonov |
hep-th/9208071 | Adjoint Fermions Induce QCD | We propose to induce QCD by fermions in the adjoint representation of the
gauge group SU(N_c) on the lattice. We consider various types of lattice
fermions: chiral, Kogut--Susskind and Wilson ones. Using the mean field method
we show that a first order large-N phase transition occurs with decreasing
fermion mass. We co... | 1992-08-27 | 2009-10-22 | [
"hep-th",
"hep-lat"
] | S.Khokhlachev and Yu.Makeenko |
hep-th/9208069 | N=2 supersymmetric W-algebras | We investigate extensions of the N=2 super Virasoro algebra by one additional
super primary field and its charge conjugate. Using a supersymmetric covariant
formalism we construct all N=2 super W-algebras up to spin 5/2 of the
additional generator. Led by these first examples we close with some
conjectures on the class... | 1992-08-27 | 2009-10-22 | [
"hep-th"
] | Ralph Blumenhagen |
hep-th/9208070 | Statistical Mechanics of Extended Black Objects | We extend the considerations of a previous paper on black hole statistical
mechanics to the case of black extended objects such as black strings and black
membranes in 10-dimensional space-time. We obtain a general expression for the
Euclidean action of quantum black p-branes and derive their corresponding
degeneracy o... | 1992-08-27 | 2009-10-22 | [
"hep-th"
] | B.Harms and Y.Leblanc |
hep-th/9208065 | The Lax Operator Approach for the Virasoro and the W-Constraints in the
Generalized KdV Hierarchy | We show directly in the Lax operator approach how the Virasoro and
W-constraints on the $\tau$-function arise in the $p$-reduced KP hierarchy or
generalized KdV hierarchy. In partiacular, we consider the KdV and Boussinesq
hierarchy to show that the Virasoro and W-constraints follow from the string
equation by expandin... | 1992-08-26 | 2015-06-26 | [
"hep-th"
] | Shibaji Roy and Sudhakar Panda |
hep-th/9308124 | A Large Class of New Gravitational and Axionic Backgrounds for
Four-Dimensional Superstrings | A large class of new 4-D superstring vacua with non-trivial/singular
geometries, spacetime supersymmetry and other background fields (axion,
dilaton) are found. Killing symmetries are generic and are associated with
non-trivial dilaton and antisymmetric tensor fields. Duality symmetries
preserving N=2 superconformal in... | 1992-08-26 | 2009-10-07 | [
"hep-th"
] | E. Kiritsis, C. Kounnas and D. Lust |
hep-th/9208064 | Genus Zero Correlation Functions in c<1 String Theory | We compute N-point correlation functions of pure vertex operator states(DK
states) for minimal models coupled to gravity. We obtain agreement with the
matrix model results on analytically continuing in the numbers of cosmological
constant operators and matter screening operators. We illustrate this for the
cases of the... | 1992-08-25 | 2009-10-22 | [
"hep-th"
] | S. Govindarajan, T. Jayaraman and V. John |
hep-th/9208057 | Affine Toda Solitons and Automorphisms of Dynkin Diagrams | Using Hirota's method, solitons are constructed for affine Toda field
theories based on the simply-laced affine algebras. By considering
automorphisms of the simply-laced Dynkin diagrams, solutions to the remaining
algebras, twisted as well as untwisted, are deduced. | 1992-08-24 | 2009-10-22 | [
"hep-th",
"nlin.SI",
"solv-int"
] | Niall MacKay and William McGhee |
hep-th/9208063 | Excitation Scattering in Integrable Models and Hall-Littlewood-Kerov
Polynomials | The S-matrices for the scattering of two excitations in the XYZ model and in
all of its SU(n)-type generalizations are obtained from the asymptotic behavior
of Kerov's generalized Hall-Littlewood polynomials. These physical scattering
processes are all reduced to geometric s-wave scattering problems on certain
quantum-... | 1992-08-24 | 2009-10-22 | [
"hep-th"
] | Peter G. O. Freund, Anton V. Zabrodin |
hep-th/9208058 | Tau-Functions and Generalized Integrable Hierarchies | The tau-function formalism for a class of generalized ``zero-curvature''
integrable hierarchies of partial differential equations, is constructed. The
class includes the Drinfel'd-Sokolov hierarchies. A direct relation between the
variables of the zero-curvature formalism and the tau-functions is established.
The forma... | 1992-08-24 | 2009-10-22 | [
"hep-th",
"nlin.SI",
"solv-int"
] | Timothy Hollowood and J. Luis Miramontes |
hep-th/9208061 | On an algebraic approach to higher dimensional statistical mechanics | We study representations of Temperley-Lieb algebras associated with the
transfer matrix formulation of statistical mechanics on arbitrary lattices. We
first discuss a new hyperfinite algebra, the Diagram algebra
$D_{\underline{n}}(Q)$, which is a quotient of the Temperley-Lieb algebra
appropriate for Potts models in th... | 1992-08-24 | 2016-09-06 | [
"hep-th",
"nlin.SI",
"solv-int"
] | P. Martin, Herbert Saleur |
hep-th/9208059 | Trace Anomalies from Quantum Mechanics | The 1-loop anomalies of a d-dimensional quantum field theory can be computed
by evaluating the trace of the regulated path integral jacobian matrix, as
shown by Fujikawa. In 1983, Alvarez-Gaum\'e and Witten observed that one can
simplify this evaluation by replacing the operators which appear in the
regulator and in th... | 1992-08-24 | 2009-10-22 | [
"hep-th"
] | Fiorenzo Bastianelli and Peter van Nieuwenhuizen |
hep-th/9208060 | Naked Singularities as Possible Candidates for Gamma-ray Bursters | Naked singularities appear naturally in dynamically evolving solutions of
Einstein equations involving gravitational collapse of radiation, dust and
perfect fluids, provided the rate of accretion is less than a critical value.
We propose that the gamma-ray bursters (GRBs) are examples of these naked
singularity solutio... | 1992-08-24 | 2009-10-22 | [
"hep-th",
"astro-ph",
"gr-qc"
] | Sandip K. Chakrabarti and Pankaj S. Joshi (Tata Institute of
Fundamental Research, Bombay, India) |
hep-th/9208062 | Duality, Quantum Vortices and Anyons in Maxwell-Chern-Simons-Higgs
Theories | The order-disorder duality structure is exploited in order to obtain a
quantum description of anyons and vortices in: a) the Maxwell theory; b) the
Abelian Higgs Model; c) the Maxwell-Chern-Simons theory; d) the
Maxwell-Chern-Simons-Higgs theory. A careful construction of a charge bearing
order operator($\sigma$) and a... | 1992-08-24 | 2009-10-22 | [
"hep-th"
] | E.C.Marino |
hep-th/9208056 | Semiclassical Quantization of Two-Dimensional Dilaton Gravity | Quantization of the dilaton gravity in two dimensions is discussed by a
semiclassical approximation. We compute the fixed-area partition function to
one-loop order and obtain the string susceptibility on Riemann surfaces of
arbitrary genus. Our result is consistent with the approach using techniques of
conformal field ... | 1992-08-23 | 2010-11-01 | [
"hep-th"
] | Yoshiaki Tanii |
hep-th/9208054 | Continuum Limits of ``Induced QCD": Lessons of the Gaussian Model at d=1
and Beyond | We analyze the scalar field sector of the Kazakov--Migdal model of induced
QCD. We present a detailed description of the simplest one dimensional
{($d$$=$$1$)} model which supports the hypothesis of wide applicability of the
mean--field approximation for the scalar fields and the existence of critical
behaviour in the ... | 1992-08-21 | 2009-10-22 | [
"hep-th"
] | I.I. Kogan, A. Morozov, G.W. Semenoff and N. Weiss |
hep-th/9208053 | Gauge Invariant Matrix Model for the \^A-\^D-\^E Closed Strings | The models of triangulated random surfaces embedded in (extended) Dynkin
diagrams are formulated as a gauge-invariant matrix model of Weingarten type.
The double scaling limit of this model is described by a collective field
theory with nonpolynomial interaction.
The propagator in this field theory is essentially two... | 1992-08-21 | 2010-11-01 | [
"hep-th"
] | I. Kostov |
hep-th/9208052 | The Functional Integral for a Free Particle on a Half-Plane | A free non-relativistic particle moving in two dimensions on a half-plane can
be described by self-adjoint Hamiltonians characterized by boundary conditions
imposed on the systems. The most general boundary condition is parameterized in
terms of the elements of an infinite-dimensional matrix. We construct the
Brownian ... | 1992-08-21 | 2009-10-22 | [
"hep-th",
"hep-ph"
] | Michel Carreau (Boston University) |
hep-th/9208051 | Differential Equations in Special Kahler Geometry | The structure of differential equations as they appear in special \K\
geometry of $N=2$ supergravity and $(2,2)$ vacua of the heterotic string is
summarized. Their use for computing couplings in the low energy effective
Lagrangians of string compactifications is outlined. (Talk presented at the
Workshop on String Theor... | 1992-08-21 | 2008-02-03 | [
"hep-th"
] | Jan Louis |
hep-th/9208055 | Putting String/Fivebrane Duality to the Test | According to string/fivebrane duality, the Green-Schwarz factorization of the
$D=10$ spacetime anomaly polynomial $I_{12}$ into $X_4\, X_8$ means that just
as $X_4$ is the anomaly polynomial of the $d=2$ string worldsheet so $X_8$
should be the anomaly polynomial of the $d=6$ fivebrane worldvolume. To test
this idea we... | 1992-08-21 | 2008-11-26 | [
"hep-th"
] | J. A. Dixon, M. J. Duff and J. C. Plefka |
hep-th/9208050 | Remarks Concerning Polyakov's Conjecture for the 3D Ising Model and the
Hierarchical Approximation | We consider the possibility of using the hierarchical approximation to
understand the continuum limit of a reformulation of the 3D Ising model
initiated by Polyakov. We introduce several new formulations of the
hierarchical model using dual or fermionic variables. We discuss several
aspects of the renormalization group... | 1992-08-20 | 2008-11-26 | [
"hep-th",
"hep-lat"
] | Yannick Meurice |
hep-th/9208046 | Landau-Ginzburg Topological Theories in the Framework of GKM and
Equivalent Hierarchies | We consider the deformations of ``monomial solutions'' to Generalized
Kontsevich Model \cite{KMMMZ91a,KMMMZ91b} and establish the relation between
the flows generated by these deformations with those of $N=2$ Landau-Ginzburg
topological theories. We prove that the partition function of a generic
Generalized Kontsevich ... | 1992-08-19 | 2011-04-20 | [
"hep-th"
] | S. Kharchev, A. Marshakov, A. Mironov, A. Morozov |
hep-th/9208049 | Pseudoclassical Model of Spinning Particle with Anomalous Magnetic
Momentum | A generalization of the pseudoclassical action of a spinning particle in the
presence of an anomalous magnetic momentum is given. The action is written in
reparametrization and supergauge invariant form. The Dirac quantization, based
on the Hamiltonian analyses of the model, leads to the Dirac-Pauli equation for
a part... | 1992-08-19 | 2011-03-31 | [
"hep-th"
] | D.M. Gitman and A.V.Saa |
hep-th/9208048 | Superconformal Affine Liouville Theory | We present a superconformally invariant and integrable model based on the
twisted affine Kac-Moody superalgebra $\hat{osp(2|2)}^{(2)}$ which is the
supersymmetrization of the purely bosonic conformal affine Liouville theory
recently proposed by Babelon and Bonora. Our model reduces to the
super-Liouville or to the supe... | 1992-08-19 | 2009-10-22 | [
"hep-th"
] | F.Toppan and Y.-Z.Zhang |
hep-th/9208047 | Renormalization and finiteness of topological BF theories | We show that the BF theory in any space-time dimension, when quantized in a
certain linear covariant gauge, possesses a vector supersymmetry. The generator
of the latter together with those of the BRS transformations and of the
translations form the basis of a superalgebra of the Wess-Zumino type. We give
a general cla... | 1992-08-18 | 2009-10-22 | [
"hep-th"
] | C. Lucchesi, O. Piguet and S.P. Sorella |
hep-th/9208045 | Large-N Reduction, Master Field and Loop Equations in Kazakov-Migdal
Model | I study the large-N reduction a la Eguchi--Kawai in the Kazakov--Migdal
lattice gauge model. I show that both quenching and twisting prescriptions lead
to the coordinate-independent master field. I discuss properties of loop
averages in reduced as well as unreduced models and demonstrate those coincide
in the large mas... | 1992-08-17 | 2011-07-19 | [
"hep-th",
"hep-lat"
] | Yu.Makeenko |
hep-th/9208044 | Conformal Matrix Models as an Alternative to Conventional Multi-Matrix
Models | We introduce {\it conformal multi-matrix models} (CMM) as an alternative to
conventional multi-matrix model description of two-dimensional gravity
interacting with $c < 1$ matter. We define CMM as solutions to (discrete)
extended Virasoro constraints. We argue that the so defined alternatives of
multi-matrix models rep... | 1992-08-17 | 2009-03-04 | [
"hep-th"
] | S. Kharchev, A. Marshakov, A. Mironov, A. Morozov, S. Pakuliak |
hep-th/9208043 | Diffeomorphism group and conformal fields | Conformal fields are a new class of $Vect(N)$ modules which are more general
than tensor fields. The corresponding diffeomorphism group action is
constructed. Conformal fields are thus invariantly defined. | 1992-08-15 | 2007-05-23 | [
"hep-th"
] | T. A. Larsson |
hep-th/9208042 | Strings in Discrete and Continuous Target Spaces: A Comparison | We find the precise relationship between the loop gas method and the matrix
quantum mechanics approach to two-dimensional string theory. The two systems
are distinguished by different target spaces ($\Z$ and $\R$, respectively) as
far as {\it observables} are concerned. We argue that target space loop
correlators shoul... | 1992-08-14 | 2009-10-22 | [
"hep-th"
] | Ivan K.Kostov and Matthias Staudacher |
hep-th/9208041 | String fine tuning | We develop further a new geometrical model of a discretized string, proposed
in [1] and establish its basic physical properties. The model can be considered
as the natural extention of the usual Feynman amplitude of the random walks to
random surfaces. Both amplitudes coinside in the case, when the surface
degenarates ... | 1992-08-14 | 2023-02-13 | [
"hep-th"
] | G.Savvidy and K.Savvidy |
hep-th/9208039 | Trivial Spectrum of Free 1+1 Light-Cone Strings | The BRST cohomology of 1+1 strings in a free light-cone gauge contains only
the two-dimensional tachyon, and excludes all excited states of both matter and
ghosts, including the special states that arise in the continuum conformal
gauge quantization and in the $c = 1$ matrix models. This exclusion takes place
at a very... | 1992-08-13 | 2009-10-22 | [
"hep-th"
] | Eric Smith |
hep-th/9208035 | Calculation of Green-Schwarz Superstring Amplitudes Using the N=2
Twistor-String Formalism | The manifestly SU(4)xU(1) super-Poincare invariant free-field N=2 twistor-
string action for the ten-dimensional Green-Schwarz superstring is quantized
using standard BRST methods. Unlike the light-cone and semi-light-cone
gauge-fixed Green-Schwarz actions, the twistor-string action does not require
interaction-point o... | 1992-08-13 | 2009-10-22 | [
"hep-th"
] | Nathan Berkovits |
hep-th/9208038 | Modular Groups for Twisted Narain Models | We demonstrate how to find modular discrete symmetry groups for $Z_N$
orbifolds. The $Z_7$ orbifold is treated in detail as a non-trivial example of
a $(2,2)$ orbifold model. We give the generators of the modular group for this
case which, surprisingly, does not contain $\sltz^3$ as had been speculated.
The treatment m... | 1992-08-13 | 2015-06-26 | [
"hep-th"
] | J. Erler and M. Spalinski |
hep-th/9208036 | Gravitationally Collapsing Dust in $(2+1)$ Dimensions | We investigate the circumstances under which gravitationally collapsing dust
can form a black hole in three-dimensional spacetime. | 1992-08-13 | 2009-10-22 | [
"hep-th",
"gr-qc"
] | S.F. Ross and R.B. Mann |
hep-th/9208040 | On the twisted G/H topological models | The twisted G/H models are constructed as twisted supersymmetric gauged WZW
models. We analyze the case of $G=SU(N)$, $H=SU(N_1)\times ...\times
SU(N_n)\times U(1)^r$ with $rank\ G =\ rank\ H$, and discuss possible
generalizations. We introduce a non-abelian bosonization of the $(1,0)$ ghost
system in the adjoint of $H... | 1992-08-13 | 2009-09-29 | [
"hep-th"
] | O. Aharony, O. Ganor, J. Sonnenschein and S. Yankielowicz |
hep-th/9208037 | Bicovariant differential geometry of the quantum group GL_q(3) | We construct a bicovariant differential calculus on the quantum group
$GL_q(3)$, and discuss its restriction to $[SU(3) \otimes U(1)]_q$. The
$q$-algebra of Lie derivatives is found, as well as the Cartan-Maurer
equations. All the quantities characterizing the non-commutative geometry of
$GL_q(3)$ are given explicitly. | 1992-08-13 | 2009-10-22 | [
"hep-th"
] | Paolo Aschieri and Leonardo Castellani |
hep-th/9208033 | A Hierarchical Array of Integrable Models | Motivated by Harish-Chandra theory, we construct, starting from a simple
CDD\--pole $S$\--matrix, a hierarchy of new $S$\--matrices involving ever
``higher'' (in the sense of Barnes) gamma functions.These new $S$\--matrices
correspond to scattering of excitations in ever more complex integrable
models.From each of thes... | 1992-08-12 | 2009-10-22 | [
"hep-th"
] | Peter G. O. Freund, Anton V. Zabrodin |
hep-th/9208032 | Quantum Gravity, Dynamical Triangulation and Higer Derivative
Regularization | We consider a discrete model of euclidean quantum gravity in four dimensions
based on a summation over random simplicial manifolds. The action used is the
Einstein-Hilbert action plus an $R^2$-term. The phase diagram as a function of
the bare coupling constants is studied in the search for a sensible continuum
limit. F... | 1992-08-12 | 2009-10-22 | [
"hep-th",
"hep-lat"
] | J. Ambjorn, J. Jurkiewicz and C. F. Kristjansen |
hep-th/9208034 | Einstein Gravity in 2+1 Dimensions from a Gauge Model with Symmetry
Breaking | Einstein Gravity in 2+1 dimensions arises as a consequence of the equations
of motion of a gauge model in an external metric. Newton's constant appears as
an order parameter of a spontaneously broken discrete symmetry. Matter is
coupled in a straightforward way. | 1992-08-12 | 2007-05-23 | [
"hep-th",
"gr-qc"
] | R. Brooks, D. Cangemi and M. Crescimanno |
hep-th/9208031 | The partition function of 2d string theory | We derive a compact and explicit expression for the generating functional of
all correlation functions of tachyon operators in 2D string theory. This
expression makes manifest relations of the $c=1$ system to KP flow and
$W_{1+\infty}$ constraints. Moreover we derive a Kontsevich-Penner integral
representation of this ... | 1992-08-11 | 2011-10-11 | [
"hep-th"
] | R. Dijkgraaf, G. Moore, R. Plesser |
hep-th/9208030 | Matter fields with c > 1 coupled to 2d gravity | We solve a class of branched polymer models coupled to spin systems and show
that they have no phase transition and are either always magnetized or never
magnetized depending on the branching weights. By comparing these results with
numerical simulations of two-dimensional quantum gravity coupled to matter
fields with ... | 1992-08-11 | 2019-08-17 | [
"hep-th"
] | J. Ambjorn, B. Durhuus, T. Jonsson and G. Thorleifsson |
hep-th/9208028 | Area Preserving Diffeomorphisms and $W_{\infty}$ Symmetry in a $2+1$
Chern-Simons Theory | We discuss the $W_{\infty}$ symmetry in the $2+1$ gauge theory with the
Chern-Simons term. It is shown that the generators of this symmetry act on the
ground state as the canonical transformations in the phase space. We shall also
discuss the analogy between discrete states in $c=1$ string theory and Landau
level state... | 1992-08-11 | 2011-07-19 | [
"hep-th"
] | Ian I. Kogan |
hep-th/9208029 | Twisted N=2 Supergravity as Topological Gravity in Four Dimensions | We show that the BRST quantum version of pure D=4 N=2 supergravity can be
topologically twisted, to yield a formulation of topological gravity in four
dimensions. The topological BRST complex is just a rearrangement of the old
BRST complex, that partly modifies the role of physical and ghost fields:
indeed, the new gho... | 1992-08-11 | 2014-11-18 | [
"hep-th"
] | Damiano Anselmi and Pietro Fre |
hep-th/9208025 | A Closed Bianchi I Universe in String Theory | A special Bianchi I universe is constructed in $~4D~$ string theory.
Geometrically it represents a $~3D~$ anti-de-Sitter space crossed with a flat
direction whereas in terms of an associated conformal field theory it is an
extremal case of a gauged WZWN theory with target the coset $~SU(1,1) \times
R^2 / R~$. Some of i... | 1992-08-10 | 2009-10-22 | [
"hep-th"
] | Nemanja Kaloper |
hep-th/9208026 | A Proposal for Strings at D>1 | Using the reduced formulation on large-N Quantum Field Theories we study
strings in space-time dimensions higher that one. We present results on
possible string susceptibilities, macroscopic loop operators, 1/N -corrections
and other general properties of the model. | 1992-08-10 | 2009-10-22 | [
"hep-th"
] | L. Alvarez-Gaume, J.L.F. Barbon and C. Crnkovic |
hep-th/9208027 | On Background Independent Open-String Field Theory | A framework for background independent open-string field theory is proposed.
The approach involves using the BV formalism -- in a way suggested by recent
developments in closed-string field theory -- to implicitly define a gauge
invariant Lagrangian in a hypothetical ``space of all open-string world-sheet
theories.'' I... | 1992-08-10 | 2010-04-07 | [
"hep-th"
] | Edward Witten |
hep-th/9208024 | Construction of Realistic Standard--like Models in the Free Fermionic
Superstring Formulation | I discuss in detail the construction of realistic superstring standard--like
models in the four dimensional free fermionic formulation. The analysis results
in a restricted class of models with unique characteristics: (i) Three and only
three generations of chiral fermions with their superpartners and the correct
Stand... | 1992-08-09 | 2009-10-22 | [
"hep-th",
"hep-ph"
] | Alon E. Faraggi (Weizmann Sceince Institute) |
hep-th/9208023 | Aspects of Nonrenormalizable Terms in a Superstring Derived
Standard--like Model | I investigate the role of nonrenormalizable terms, up to order N=8, in a
superstring derived standard--like model. I argue that nonrenormalizable terms
restrict the gauge symmetry, at the Planck scale, to be $SU(3)\times
SU(2)\times U(1)_{B-L}\times U(1)_{T_{3_R}}$ rather than $SU(3)\times
SU(2)\times U(1)_Y$. I show t... | 1992-08-09 | 2009-10-22 | [
"hep-th",
"hep-ph"
] | Alon E. Faraggi |
hep-th/9208022 | On string field theory for $C \leq 1$ | I present a short review of our results with S.Kharchev, A.Mironov, A.Morozov
and A.Zabrodin on Generalized Kontsevich model which in a sense can be
interpreted as unifying ``string field theory'' for $c < 1$ minimal series
coupled to 2d gravity. The problem of interpolation between different models is
discussed. It is... | 1992-08-08 | 2008-02-03 | [
"hep-th"
] | A. Marshakov |
hep-th/9208021 | Models with Quantum Symmetry and their Spectra | We review how to construct a large class of integrable quantum spin chains
with quantum-algebra symmetry, and how to determine their spectra. (To appear
in Louis Witten Festschrift) | 1992-08-07 | 2007-05-23 | [
"hep-th"
] | Luca Mezincescu and Rafael I. Nepomechie |
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