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/9302093 | Levinson's Theorem for Dirac Equation | Levinson's theorem for the Dirac equation is known in the form of a sum of
positive and negative energy phase shifts at zero momentum related to the total
number of bound states. In this letter we prove a stronger version of
Levinson's theorem valid for positive and negative energy phase shifts
separately. The surprisi... | 1993-02-19 | 2009-10-22 | [
"hep-th",
"nucl-th"
] | Nathan Poliatzky |
hep-th/9302092 | Surgical invariants of four-manifolds | A new topological invariant of closed connected orientable four-dimensional
manifolds is proposed. The invariant, constructed via surgery on a special
link, is a four-dimensional counterpart of the celebrated SU(2) three-manifold
invariant of Reshetikhin, Turaev and Witten. | 1993-02-19 | 2008-02-03 | [
"hep-th",
"alg-geom",
"math.QA"
] | B. Broda (U. Clausthal and U. Lodz) |
hep-th/9302094 | The Blob Algebra and the Periodic Temperley-Lieb Algebra | We determine the structure of two variations on the Temperley-Lieb algebra,
both used for dealing with special kinds of boundary conditions in statistical
mechanics models.
The first is a new algebra, the `blob' algebra (the reason for the name will
become obvious shortly!). We determine both the generic and all the ... | 1993-02-19 | 2009-10-22 | [
"hep-th"
] | Paul Martin and Hubert Saleur |
hep-th/9302089 | The Hidden Quantum Group of the 8-vertex Free Fermion Model: q-Clifford
Algebras | We prove in this paper that the elliptic $R$--matrix of the eight vertex free
fermion model is the intertwiner $R$--matrix of a quantum deformed
Clifford--Hopf algebra. This algebra is constructed by affinization of a
quantum Hopf deformation of the Clifford algebra. | 1993-02-19 | 2009-10-22 | [
"hep-th"
] | R.Cuerno, C.Gomez, E.Lopez and G.Sierra |
hep-th/9302095 | Algebras in Higher Dimensional Statistical Mechanics - the Exceptional
Partition (MEAN Field) Algebras | We determine the structure of the partition algebra $P_n(Q)$ (a generalized
Temperley-Lieb algebra) for specific values of $Q \in \C$, focusing on the
quotient which gives rise to the partition function of $n$ site $Q$-state Potts
models (in the continuous $Q$ formulation) in arbitrarily high lattice
dimensions (the me... | 1993-02-19 | 2009-10-22 | [
"hep-th"
] | Paul Martin and Hubert Saleur |
hep-th/9302082 | Perturbation Theory in Two Dimensional Open String Field Theory | In this paper we develop the covariant string field theory approach to open
2d strings. Upon constructing the vertices, we apply the formalism to calculate
the lowest order contributions to the 4- and 5- point tachyon--tachyon tree
amplitudes. Our results are shown to match the `bulk' amplitude calculations of
Bershads... | 1993-02-18 | 2009-10-22 | [
"hep-th"
] | Branko Urosevic (BROWN) |
hep-th/9302083 | Conformal sigma models corresponding to gauged Wess-Zumino-Witten
theories | We develop a field-theoretical approach to determination of the background
target space fields corresponding to general $G/H$ coset conformal theories
described by gauged WZW models. The basic idea is to identify the effective
action of a gauged WZW theory with the effective action of a sigma model. The
derivation of t... | 1993-02-18 | 2009-09-17 | [
"hep-th"
] | A.A. Tseytlin |
hep-th/9302084 | Combinatorial expression for universal Vassiliev link invariant | The most general R-matrix type state sum model for link invariants is
constructed. It contains in itself all R-matrix invariants and is a generating
function for "universal" Vassiliev link invariants. This expression is more
simple than Kontsevich's expression for the same quantity, because it is
defined combinatoriall... | 1993-02-18 | 2009-10-22 | [
"hep-th",
"math.QA"
] | Sergey Piunikhin (Harvard University) |
hep-th/9302081 | Threefold Family of Charged Spin-1/2 Dirac Bubbles | We extend Dirac's `extensible model of the electron' to include spin and
family. $U(1)_{e.m.}$ charge conservation on the bubble is translated into a
secondary $U(1)_{g}$ world-manifold gauge principle. Reflecting the secondary
magnetic monopole configuration on spatial $S^2$, the harmonic excitations may
furnish half ... | 1993-02-18 | 2014-11-18 | [
"hep-th",
"hep-ph"
] | Aharon Davidson and Uzi Paz |
hep-th/9302085 | Difficulties of an Infrared Extension of Differential Renormalization | We investigate the possibility of generalizing differential renormalization
of D.Z.Freedman, K.Johnson and J.I.Latorre in an invariant fashion to theories
with infrared divergencies via an infrared $\tilde{R}$ operation.
Two-dimensional $\sigma$ models and the four-dimensional $\phi^4$ theory
diagrams with exceptional ... | 1993-02-18 | 2009-10-22 | [
"hep-th"
] | L.V.Avdeev, D.I.Kazakov and I.N.Kondrashuk |
hep-th/9302080 | Information Consumption by Reissner-Nordstrom Black Holes | The low-energy scattering of charged fermions by extremal magnetic
Reissner-Nordstrom black holes is analyzed in the large-$N$ and $S$-wave
approximations. It is shown that (in these approximations) information is
carried into a causally inaccessible region of spacetime, and thereby
effectively lost. It is also shown t... | 1993-02-17 | 2009-09-17 | [
"hep-th",
"gr-qc"
] | A. Strominger and S.P. Trivedi |
hep-th/9302076 | Free Braided Differential Calculus, Braided Binomial Theorem and the
Braided Exponential Map | Braided differential operators $\del^i$ are obtained by differentiating the
addition law on the braided covector spaces introduced previously (such as the
braided addition law on the quantum plane). These are affiliated to a
Yang-Baxter matrix $R$. The quantum eigenfunctions $\exp_R(\vecx|\vecv)$ of the
$\del^i$ (braid... | 1993-02-17 | 2009-10-22 | [
"hep-th",
"math.QA"
] | Shahn Majid |
hep-th/9302074 | Renormalization-group improved effective potential for gauge theories in
curved spacetime | The renormalization-group improved effective potential for an arbitrary
renormalizable massless gauge theory in curved spacetime is found,thus
generalizing Coleman-Weinberg's approach corresponding to flat space.Some
explicit examples are considered,among of them:scalar self-interacting
theory,scalar electrody namics,t... | 1993-02-17 | 2009-09-17 | [
"hep-th"
] | E. Elizalde and S.D. Odintsov |
hep-th/9302078 | Finite-Temperature Scalar Field Theory in Static de Sitter Space | The finite-temperature one-loop effective potential for a scalar field in the
static de Sitter space-time is obtained. Within this framework, by using
zeta-function regularization, one can get, in the conformally invariant case,
the explicit expression for the stress tensor anomaly. Its value turns out to
depend on the... | 1993-02-17 | 2009-10-22 | [
"hep-th"
] | D.V.Fursaev and G.Miele |
hep-th/9302079 | Fractional Superstring Tree Scattering Amplitudes | The spin-4/3 fractional superstring is characterized by a chiral algebra
involving a spin-4/3 current on the world-sheet in addition to the
energy-momentum tensor. These currents generate physical state conditions on
the fractional superstring Fock space. Scattering amplitudes of these physical
states are described whi... | 1993-02-17 | 2007-05-23 | [
"hep-th"
] | Philip Argyres |
hep-th/9302075 | Tachyon Splits the (d = 2 String) Black Hole Horizon and Turns it
Singular | We present a static solution for $d = 2$ critical string theory including the
tachyon $T$ but not its potential $V(T)$. This solution thus incorporates
tachyon back reaction and, when $T = 0$, reduces to the black hole solution.
When $T \neq 0$ one finds that (1) the Schwarzschild horizon of the above black
hole splits... | 1993-02-17 | 2010-11-01 | [
"hep-th",
"gr-qc"
] | S. Kalyana Rama |
hep-th/9302077 | WZW-Toda Reduction using the Casimir Operator | We construct a quantum Hamiltonian operator for the Wess-Zumino-Witten (WZW)
model in terms of the Casimir operator. This facilitates the discussion of the
reduction of the WZW model to Toda field theory at the quantum level and
provides a very straightforward derivation of the quantum central charge for
the Toda field... | 1993-02-17 | 2009-10-22 | [
"hep-th"
] | I. Jack and J. Panvel |
hep-th/9302073 | Kleinian Geometry and the N=2 Superstring | This paper is devoted to the exploration of some of the geometrical issues
raised by the $N=2$ superstring. We begin by reviewing the reasons that
$\beta$-functions for the $N=2$ superstring require it to live in a
four-dimensional self-dual spacetime of signature $(--++)$, together with some
of the arguments as to why... | 1993-02-16 | 2009-10-07 | [
"hep-th"
] | J. Barrett, G.W. Gibbons, M.J. Perry, C.N. Pope and P.J. Ruback |
hep-th/9302071 | Aspects of Fractional Superstrings | We investigate some issues relating to recently proposed fractional
superstring theories with $D_{\rm critical}<10$. Using the factorization
approach of Gepner and Qiu, we systematically rederive the partition functions
of the $K=4,\, 8,$ and $16$ theories and examine their spacetime supersymmetry.
Generalized GSO proj... | 1993-02-16 | 2009-10-22 | [
"hep-th"
] | Gerald B. Cleaver and Philip J. Rosenthal |
hep-th/9302070 | Nonsingular 2-D Black Holes and Classical String Backgrounds | We study a string-inspired classical 2-D effective field theory with {\it
nonsingular} black holes as well as Witten's black hole among its static
solutions. By a dimensional reduction, the static solutions are related to the
$(SL(2,R)_{k}\otimes U(1))/U(1)$ coset model, or more precisely its
$O\bigl((\alpha')^{0}\bigr... | 1993-02-16 | 2009-10-22 | [
"hep-th"
] | Piljin Yi |
hep-th/9302072 | Instantons and the Ground State of the Massive Schwinger Model | We study the massive Schwinger model, quantum electrodynamics of massive,
Dirac fermions, in 1+1 dimensions; with space compactified to a circle. In the
limit that transitions to fermion--anti-fermion pairs can be neglected, we
study the full ground state. We focus on the effect of instantons which mediate
tunnelling t... | 1993-02-16 | 2009-10-22 | [
"hep-th"
] | M. B. Paranjape and Robin Ross |
hep-th/9302061 | Quantum Canonical Transformations and Integrability: Beyond Unitary
Transformations | Quantum canonical transformations are defined in analogy to classical
canonical transformations as changes of the phase space variables which
preserve the Dirac bracket structure. In themselves, they are neither unitary
nor non-unitary. A definition of quantum integrability in terms of canonical
transformations is prop... | 1993-02-15 | 2010-11-01 | [
"hep-th"
] | Arlen Anderson |
hep-th/9302065 | Dyonic Black Holes in String Theory | An exact solution of the low-energy string theory representing static,
spherical symmetric dyonic black hole is found. The solution is labeled by
their mass, electric charge, magnetic charge and asymptotic value of the scalar
dilaton. Some interesting properties of the dyonic black holes are studied. In
particular, the... | 1993-02-15 | 2010-11-19 | [
"hep-th"
] | Guang-Jiun Cheng, Rue-Ron Hsu and Wei-Fu Lin |
hep-th/9302063 | A Classically Singular Representation of $ su_q(n) $ | A \rep of \sun, which diverges in the limit of \cl, is investigated. This is
an infinite dimensional and a non-unitary \rep, defined for the real value of $
q, \ 0 < q < 1. $ Each \irrep is specified by $ n $ continuous variables and
one discrete variable. This \rep gives a new solution of the Yang-Baxter
equation, whe... | 1993-02-15 | 2009-10-22 | [
"hep-th"
] | N. Aizawa |
hep-th/9302066 | On the q-Deformed Hamiltonian Mechanics | We described the $q$-deformed phase space. The $q$-deformed Hamilton eqations
of motion are derived and discussed. Some simple models are considered. | 1993-02-15 | 2009-10-22 | [
"hep-th"
] | P. Caban, A. Dobrosielski, A. Krajewska, Z. Walczak |
hep-th/9302062 | Quantum Canonical Transformations: Physical Equivalence of Quantum
Theories | Two quantum theories are physically equivalent if they are related, not by a
unitary transformation, but by an isometric transformation. The conditions
under which a quantum canonical transformation is an isometric transformation
are given. | 1993-02-15 | 2010-11-01 | [
"hep-th"
] | Arlen Anderson |
hep-th/9302068 | Energy Momentum Tensor in Conformal Field Theories Near a Boundary | The requirements of conformal invariance for the two point function of the
energy momentum tensor in the neighbourhood of a plane boundary are
investigated, restricting the conformal group to those transformations leaving
the boundary invariant. It is shown that the general solution may contain an
arbitrary function of... | 1993-02-15 | 2009-10-22 | [
"hep-th",
"cond-mat"
] | D.M. McAvity and H. Osborn |
hep-th/9302067 | Canonical quantization approach to 2d gravity coupled to c<1 matter | We show that all important features of 2d gravity coupled to $c<1$ matter can
be easily understood from the canonical quantization approach a la Dirac.
Furthermore, we construct a canonical transformation which maps the theory into
a free-field form, i.e. the constraints become free-field Virasoro generators
with backg... | 1993-02-15 | 2009-01-16 | [
"hep-th"
] | A. Mikovic |
hep-th/9302064 | q-deformed superconformal algebra on quantum superspace | A quantum deformation of 4-dimensional superconformal algebra realized on
quantum superspace is investigated. We study the differential calculus and the
action of the quantum generators corresponding to $sl_q(1|4)$ which act on the
quantum superspace. We derive deformed $su(1|2,2)$ algebras from the deformed
$sl(1|4)$ ... | 1993-02-15 | 2009-10-22 | [
"hep-th"
] | Tatsuo Kobayashi and Tsuneo Uematsu |
hep-th/9302069 | Topology changing processes and symmetries of string effective action | Wormhole solutions corresponding to space-time geometries $R^1\times
S^1\times S^2$ and $R^1\times S^3$ are obtained from reduced string effective
action and the action is written in a manifestly $O(d,d)$ invariant form. A
general treatment is given for obtaining wormhole solutions of different
topologies from dimensio... | 1993-02-14 | 2009-10-22 | [
"hep-th"
] | S. Pratik Khastgir and Jnanadeva Maharana |
hep-th/9302058 | Construction of String Solutions around Non-trivial Backgrounds | We present a way of constructing string solutions around non-trivial
gravitational backgrounds. The proposed solutions are constructed using $N = 4$
superconformal building blocks with $\hat c = 4$. We give two different and
inequivalent realizations of non-trivial four-dimensional subspaces, and we
show the emergence ... | 1993-02-14 | 2007-05-23 | [
"hep-th"
] | Costas Kounnas |
hep-th/9302059 | Free field resolution for nonunitary representations of N=2
SuperVirasoro | We study N=2 SuperVirasoro SCFT for the generic value of the central charge.
The main tool is the nonstandard bosonisation suggested in \ref\rRoz{L.
Rozansky a letter to M. Bershadsky, 1989}, \ref\rSeBGR{B. Gato-Rivera, A.
Semikhatov Phys. Letts. B293 (1992) 72},\ref\rBLNW{M. Bershadsky, W. Lerche, D.
Nemeshansky, N. W... | 1993-02-14 | 2016-09-06 | [
"hep-th"
] | V. Sadov |
hep-th/9302060 | On the spectra of $\hat{sl}(N)_k/\hat{sl}(N)_k$-cosets and $W_N$
gravities | We study the spectra of G/G coset models by computing BRST cohomology of
affine Lie algebras with coefficients in tensor product of two modules.
One-to-one correspondence between the spectra of $A_1^1/A_1^1$ and that of the
minimal matter coupled to gravity (including boundary states of the Kac table)
is observed. This... | 1993-02-14 | 2009-10-22 | [
"hep-th"
] | Vladimir Sadov |
hep-th/9302057 | On a New Supersymmetric KdV Hierarchy in $2{-}d$ Quantum Supergravity | Recently a new supersymmetric extension of the KdV hierarchy has appeared in
a matrix-model-inspired approach to $2{-}d$ quantum supergravity. Here we prove
that this hierarchy is essentially the KdV hierarchy, where the KdV field is
now replaced by an even superfield. This allows us to find the conserved
charges and t... | 1993-02-14 | 2020-10-19 | [
"hep-th"
] | J.M. Figueroa-O'Farrill and S. Stanciu |
hep-th/9302055 | $\delta$-Function Perturbations and Boundary Problems by Path
Integration | A wide class of boundary problems in quantum mechanics is discussed by using
path integrals. This includes motion in half-spaces, radial boxes, rings, and
moving boundaries. As a preparation the formalism for the incorporation of
$\delta$-function perturbations is outlined, which includes the discussion of
multiple $\d... | 1993-02-13 | 2016-09-06 | [
"hep-th"
] | Christian Grosche |
hep-th/9302053 | Classification of Solvable Feynman Path Integrals | A systematic classification of Feynman path integrals in quantum mechanics is
presented and a table of solvable path integrals is given which reflects the
progress made during the last ten years or so, including, of course, the main
contributions since the invention of the path integral by Feynman in 1942. An
outline o... | 1993-02-13 | 2007-05-23 | [
"hep-th"
] | Christian Grosche and Frank Steiner |
hep-th/9302054 | Path Integral Solution of a Class of Explicitly Time-Dependent
Potentials | A specific class of explicitly time-dependent potentials is studied by means
of path integrals. For this purpose a general formalism to treat explicitly
time-dependent space-time transformations in path integrals is sketched. An
explicit time-dependent model under consideration is of the form
$V(q,t)=V[q/\zeta(t)]/\zet... | 1993-02-13 | 2009-10-22 | [
"hep-th"
] | Christian Grosche |
hep-th/9302056 | Selberg Supertrace Formula for Super Riemann Surfaces III: Bordered
Super Riemann Surfaces | This paper is the third in a sequel to develop a super-analogue of the
classical Selberg trace formula, the Selberg supertrace formula. It deals with
bordered super Riemann surfaces. The theory of bordered super Riemann surfaces
is outlined, and the corresponding Selberg supertrace formula is developed. The
analytic pr... | 1993-02-13 | 2009-10-22 | [
"hep-th"
] | Christian Grosche |
hep-th/9302047 | Geometric Classification of Conformal Anomalies in Arbitrary Dimensions | We give a complete geometric description of conformal anomalies in arbitrary,
(necessarily even) dimension. They fall into two distinct classes: the first,
based on Weyl invariants that vanish at integer dimensions, arises from finite
-- and hence scale-free -- contributions to the effective gravitational action
throug... | 1993-02-12 | 2008-11-26 | [
"hep-th"
] | S. Deser and A. Schwimmer |
hep-th/9302052 | Strings in Curved Spacetimes | Progress on the physics of strings in curved spacetime are comprehensively
reviewed.We start by showing through renormalization group arguments that a
meaningful quantum theory of gravity must be finite and must include all
particle physics.Then, we review classical and quantum string propagation in
curved spacetimes.W... | 1993-02-12 | 2008-02-03 | [
"hep-th",
"astro-ph",
"gr-qc"
] | H. J. de Vega |
hep-th/9302048 | Topological Strings, Flat Coordinates and Gravitational Descendants | We discuss physical spectra and correlation functions of topological minimal
models coupled to topological gravity. We first study the BRST formalism of
these theories and show that their BRST operator $Q=Q_s+Q_v$ can be brought to
$Q_s$ by a certain homotopy operator $U$, $UQU^{-1}=Q_s$ ($Q_s$ and $Q_v$ are
the $N=2$ ... | 1993-02-12 | 2009-10-22 | [
"hep-th"
] | T. Eguchi, H. Kanno, Y. Yamada and S.-K. Yang |
hep-th/9302050 | Master Equations for Extended Lagrangian BRST Symmetries | Starting from the requirement that a Lagrangian field theory be invariant
under both Schwinger-Dyson BRST and Schwinger-Dyson anti-BRST symmetry, we
derive the BRST--anti-BRST analogue of the Batalin-Vilkovisky formalism. This
is done through standard Lagrangian gauge fixing respecting the extended BRST
symmetry. The s... | 1993-02-12 | 2009-10-22 | [
"hep-th"
] | P.H. Damgaard and F. De Jonghe |
hep-th/9302049 | On the BRST Operator Structure of the N=2 String | The BRST operator cohomology of $N=2$ $2d$ supergravity coupled to matter is
presented. Descent equations for primary superfields of the matter sector are
derived. We find one copy of the cohomology at ghost number one, two
independent copies at ghost number two, and conjecture that there is a copy at
ghost number thre... | 1993-02-12 | 2009-10-22 | [
"hep-th"
] | Amit Giveon and Martin Rocek |
hep-th/9302051 | One-loop effective potential on hyperbolic manifolds | The one-loop effective potential for a scalar field defined on an ultrastatic
space-time whose spatial part is a compact hyperbolic manifold, is studied
using zeta-function regularization for the one-loop effective action. Other
possible regularizations are discussed in detail. The renormalization group
equations are d... | 1993-02-12 | 2011-05-12 | [
"hep-th"
] | Guido Cognola, Klaus Kirsten and Sergio Zerbini |
hep-th/9302044 | Finite Lorentz Transformations, Automorphisms, and Division Algebras | We give an explicit algebraic description of finite Lorentz transformations
of vectors in 10-dimensional Minkowski space by means of a parameterization in
terms of the octonions. The possible utility of these results for superstring
theory is mentioned. Along the way we describe automorphisms of the two highest
dimensi... | 1993-02-12 | 2009-10-22 | [
"hep-th",
"gr-qc"
] | Corinne A. Manogue and J\"org Schray |
hep-th/9302042 | A method for obtaining quantum doubles from the Yang-Baxter R-matrices | We develop the approach of Faddeev, Reshetikhin, Takhtajan [1] and of Majid
[2] that enables one to associate a quasitriangular Hopf algebra to every
regular invertible constant solution of the quantum Yang-Baxter equations. We
show that such a Hopf algebra is actually a quantum double. | 1993-02-11 | 2009-10-22 | [
"hep-th",
"math.QA"
] | A. A. Vladimirov |
hep-th/9302041 | Comment on Gravity and the Poincare Group | Following the approach of Grignani and Nardelli [1], we show how to cast the
two-dimensional model $L \sim curv^2 + torsion^2 + cosm.const$ -- and in fact
any theory of gravity -- into the form of a Poincare gauge theory. By means of
the above example we then clarify the limitations of this approach: The
diffeomorphism... | 1993-02-11 | 2009-10-22 | [
"hep-th"
] | Thomas Strobl |
hep-th/9302043 | On the Hopf algebras generated by the Yang-Baxter R-matrices | We reformulate the method recently proposed for constructing quasitriangular
Hopf algebras of the quantum-double type from the R-matrices obeying the
Yang-Baxter equations. Underlying algebraic structures of the method are
elucidated and an illustration of its facilities is given. The latter produces
an example of a ne... | 1993-02-11 | 2009-10-22 | [
"hep-th",
"math.QA"
] | A. A. Vladimirov |
hep-th/9302039 | Free Field Realization of $N=2$ Super $W_{3}$ Algebra | We study the quantum $N=2$ super-$W_{3}$ algebra using the free field
realization, which is obtained from the supersymmetric Miura transformation
associated with the Lie superalgebra $A(2|1)$. We compute the full operator
product expansions of the algebra explicitly. It is found that the results
agree with those obtain... | 1993-02-10 | 2009-10-22 | [
"hep-th"
] | Katsushi Ito |
hep-th/9302046 | Constrained Dynamics of the Coupled Abelian Two-Form | I present the reduction of phase space of the theory of an antisymmetric
tensor potential coupled to an abelian gauge field, using Dirac's procedure.
Duality transformations on the reduced phase space are also discussed. | 1993-02-10 | 2015-06-26 | [
"hep-th"
] | Amitabha Lahiri,10 |
hep-th/9302040 | Two-dimensional Black Hole With Torsion | The 2D model of gravity with zweibeins $e^{a}$ and the Lorentz connection
one-form $\omega^{a}_{\ b}$ as independent gravitational variables is
considered and it is shown that the classical equations of motion are exactly
integrated in coordinate system determined by components of 2D torsion. For
some choice of integra... | 1993-02-10 | 2009-10-22 | [
"hep-th"
] | S.N.Solodukhin |
hep-th/9302038 | SL(2, Z) Duality and Magnetically Charged Strings | Postulate of SL(2,\Z) invariance of toroidally compactified heterotic string
theory in four dimensions implies the existence of new string (dual string)
states carrying both, electric and magnetic charges. In this paper we study the
interaction between these dual strings. In particular, we consider scattering
of two su... | 1993-02-10 | 2009-09-15 | [
"hep-th"
] | Ashoke Sen |
hep-th/9302031 | White Noise and Heating of Open Quantum Field Fermi Systems | I study the time evolution of the density matrices of quantum Fermi systems
interacting with classic external Fermi fields. This interaction either changes
the temperature of the system or it affects the density of particles. For
relativistic Dirac fermions, variations of temperature lead to creation
(annihilation) of ... | 1993-02-09 | 2007-05-23 | [
"hep-th"
] | A.A.Abrikosov Jr |
hep-th/9302045 | Poincare invariance in temporal gauge canonical quantization and
\(\theta\)-vacua | The Poincare invariance in the temporal gauge canonical quantization of QCD
is shown manifestly by verifying the energy-momentum-vector and
angular-momentum-tensor satisfy the Poincare algebra in the physical Hilbert
space. Two different values of \(\theta\) for the $\theta$-term in QCD
lagrangian lead to different rep... | 1993-02-09 | 2015-06-26 | [
"hep-th"
] | Hisashi Kikuchi |
hep-th/9302029 | Solving the Conformal Bootstrap: Four-Fermion Interactions at 2<d<4 | We formulate the conformal bootstrap approach to four--fermion theory at its
strong coupling fixed point in dimensions $2<d<4$. We present a solution of the
bootstrap equations in the five--vertex approximation. We show that the
bootstrap approach gives a particularly simple way to obtain next to leading
order correcti... | 1993-02-09 | 2007-05-23 | [
"hep-th",
"cond-mat"
] | Wei Chen (UBC), Yuri Makeenko (ITP) and Gordon W Semenoff (UBC) |
hep-th/9302036 | Two-Vierbein Formalism for String-Inspired Axionic Gravity | Using independent left and right vierbeins to describe graviton plus axion as
suggested by string mechanics, O(d,d) duality can be realized linearly. | 1993-02-09 | 2009-10-22 | [
"hep-th"
] | W. Siegel |
hep-th/9302032 | Correlators in non-critical superstrings including the spinor emission
vertex | We discuss the structure of correlators involving the spinor emission vertex
in non critical $N=1$ superstring theory. The technique used in the computation
is the zero mode integration to arrive at the integral representation, and
later an analysis of the pole structure of the integrals which are thus
obtained. Our an... | 1993-02-09 | 2009-10-22 | [
"hep-th"
] | D. Dalmazi and E. Abdalla |
hep-th/9302037 | Non-Singularity of the Exact Two-Dimensional String Black Hole | We study the global structure of the exact two-dimensional space-time which
emerges from string theory. Previous work has shown that in the semi-classical
limit, this is a black hole similar to the Schwarzschild solution. However, we
find that in the exact case, a new Euclidean region appears "between" the
singularity ... | 1993-02-09 | 2009-10-22 | [
"hep-th"
] | Malcolm J. Perry and Edward Teo |
hep-th/9302035 | The Quantum Group Structure of 2D Gravity and Minimal Models II: The
Genus-Zero Chiral Bootstrap | The F and B matrices associated with Virasoro null vectors are derived in
closed form by making use of the operator-approach suggested by the Liouville
theory, where the quantum-group symmetry is explicit. It is found that the
entries of the fusing and braiding matrices are not simply equal to
quantum-group symbols, bu... | 1993-02-09 | 2016-09-06 | [
"hep-th"
] | E. Cremmer, Jean-Loup Gervais, J.-F. Roussel |
hep-th/9302033 | Exact Duality Symmetries in CFT and String Theory | There is substancial overlap with hepth-9211081. More results are presented
for duality in the non-compact case. It is argued that duality persists as a
symmetry also in that case. | 1993-02-09 | 2009-10-22 | [
"hep-th"
] | E. Kiritsis |
hep-th/9302030 | Hermitian Jordan Triple Systems, the Standard Model plus Gravity, and
Alpha = 1/137.03608 | A physical interpretation is given for some Hermitian Jordan triple systems
(HJTS) that were recently discussed by Gunaydin (hep-th/9301050). Quadratic
Jordan algebras derived from HJTS provide a formulation of quantum mechanics
that is a natural framework within which exceptional structures are identified
with physica... | 1993-02-09 | 2007-05-23 | [
"hep-th"
] | F. D. T. Smith |
hep-th/9302034 | On Calculation of 1/n Expansions of Critical Exponents in the
Gross-Neveu Model with the Conformal Technique | A proof of critical conformal invariance of Green's functions for a quite
wide class of models possessing critical scale invariance is given. A simple
method for establishing critical conformal invariance of a composite operator,
which has a certain critical dimension, is also presented. The method is
illustrated with ... | 1993-02-09 | 2008-02-03 | [
"hep-th"
] | S.E. Derkachov, N.A. Kivel, A.S. Stepanenko, A.N. Vasiliev |
hep-th/9302026 | Poincar\'e Gauge Theory for Gravitational Forces in (1+1) Dimensions | We discuss in detail how string-inspired lineal gravity can be formulated as
a gauge theory based on the centrally extended Poincar\'e group in $(1+1)$
dimensions. Matter couplings are constructed in a gauge invariant fashion, both
for point particles and Fermi fields. A covariant tensor notation is developed
in which ... | 1993-02-08 | 2009-10-22 | [
"hep-th",
"gr-qc"
] | Daniel Cangemi and Roman Jackiw |
hep-th/9302025 | The Crumpling Transition of Dynamically Triangulated Random Surfaces | We present the crumpling transition in three-dimensional Euclidian space of
dynamically triangulated random surfaces with edge extrinsic curvature and
fixed topology of a sphere as well as simulations of a dynamically triangulated
torus. We used longer runs than previous simulations and give new and more
accurate estim... | 1993-02-08 | 2009-10-22 | [
"hep-th",
"cond-mat",
"hep-lat"
] | Christian M\"unkel and Dieter W. Heermann |
hep-th/9302028 | A note on simplicial dimension shifting | We discuss a simplicial dimension shift which associates to each n-manifold
an n-1-manifold. As a corollary we show that an invariant which was recently
proposed by Ooguri and by Crane and Yetter for the construction of
4-dimensional quantum field theories out of 3-dimensional theories is trivial. | 1993-02-08 | 2008-02-03 | [
"hep-th",
"math.QA"
] | Adrian Ocneanu |
hep-th/9302027 | c=1 String Theory as a Topological G/G Model | The physical states on the free field Fock space of the ${SL(2,R)\over
SL(2,R)$ model at any level are computed. Using a similarity transformation on
$Q_{BRST}$, the cohomology of the latter is mapped into a direct sum of simpler
cohomologies. We show a one to one correspondence between the states of the
$k=-1$ model a... | 1993-02-08 | 2019-08-15 | [
"hep-th"
] | O. Aharony, O. Ganor, J. Sonnenschein and S. Yankielowicz |
hep-th/9302024 | Black Hole from Black Hole in Two Dimensions | We present a new class of quantum two dimensional dilaton gravity model,
which is described by $SL(2,R)/U(1)$ gauged Wess-Zumino-Witten model deformed
by $(1,1)$-operator. We analyze the model by ${1 \over k}$ expansion ($k$ is
the level of $SL(2,R)$ Wess-Zumino-Witten model) and we find that the curvature
singularity ... | 1993-02-08 | 2007-05-23 | [
"hep-th"
] | Shin'ichi Nojiri and Ichiro Oda |
hep-th/9302023 | The Calogero Model - Anyonic Representation, Fermionic Extension and
Supersymmetry | We discuss several applications and extensions of our previous operator
solution of the $N$-body Calogero problem, \ie N particles in 1 dimension
subject to a two-body interaction of the form $\half \sum_{i,j}[ (x_i - x_j)^2
+ g/ {(x_i - x_j)^2}]$. Using a complex representation of the deformed
Heisenberg algebra under... | 1993-02-07 | 2009-10-22 | [
"hep-th"
] | L. Brink, T.H. Hansson, S. Konstein and M.A. Vasiliev |
hep-th/9302022 | A Unitary S-matrix for 2D Black Hole Formation and Evaporation | We study the black hole information paradox in the context of a
two-dimensional toy model given by dilaton gravity coupled to $N$ massless
scalar fields. After making the model well-defined by imposing reflecting
boundary conditions at a critical value of the dilaton field, we quantize the
theory and derive the quantum... | 1993-02-07 | 2009-10-22 | [
"hep-th"
] | Erik Verlinde and Herman Verlinde |
hep-th/9302021 | SU(2) and the Kauffman bracket | A direct relationship between the (non-quantum) group SU(2) and the Kauffman
bracket in the framework of Chern-Simons theory is explicitly shown. | 1993-02-06 | 2009-10-22 | [
"hep-th",
"math.QA"
] | Boguslaw Broda (U. Clausthal and U. Lodz) |
hep-th/9302020 | Spacetime Diffeomorphisms and Topological W-Infinity Symmetry in Two
Dimensional Topological String Theory | This paper analyzes spacetime symmetries of topological string theory on a
two dimensional torus, and points out that the spacetime geometry of the model
is that of the Batalin-Vilkovisky formalism. Previously I found an infinite
symmetry algebra in the absolute BRST cohomology of the model. Here I find an
analog of th... | 1993-02-05 | 2009-10-22 | [
"hep-th"
] | Petr Horava |
hep-th/9302018 | Anyon Mean Field as an Exact Limit of a Gauge Theory | We summarize a study of an Abelian gauge theory in 2+1 dimensions, the gauge
field being coupled to nonrelativistic Fermions. The Action for the gauge field
is a combination of the Maxwell term and a Chern-Simons (CS) term. We study the
limit of vanishing Fermions' charge, keeping fixed the gauge field mass induced
by ... | 1993-02-04 | 2009-10-22 | [
"hep-th",
"cond-mat"
] | Roberto Iengo |
hep-th/9302019 | Noncommutative Dymanics | We propose a new wiew on the structure of quantum mechanics and postulate a
q-deformed algebra of observables. We find equations of motion for this system,
which guarantee a unitary time developement. We solve this equations for simple
models. We write this formalism in terms of twisted deRham complex. | 1993-02-04 | 2007-05-23 | [
"hep-th"
] | J. Rembielinski |
hep-th/9302017 | Curvature Singularity as the Vertex Operator | The submitted paper regards the example of the Conformal Field Theory on a 2d
manifold which metric has a point-like singularity.Since this manifold is not
conformally equivalent to that with the flat space-time metric,it's naturally
to expect that the theory cannot be trivially reduced to the well-known
consideration ... | 1993-02-04 | 2009-10-22 | [
"hep-th"
] | Dimitri Polyakov |
hep-th/9302012 | On the Geometrical Structure of Covariant Anomalies in Yang-Mills Theory | Covariant anomalies are studied in terms of the theory of secondary
characteristic classes of the universal bundle of Yang-Mills theory. A new set
of descent equations is derived which contains the covariant current anomaly
and the covariant Schwinger term. The counterterms relating consistent and
covariant anomalies a... | 1993-02-03 | 2009-10-22 | [
"hep-th"
] | Gerald Kelnhofer |
hep-th/9302014 | Matrix Model Calculations beyond the Spherical Limit | We propose an improved iterative scheme for calculating higher genus
contributions to the multi-loop (or multi-point) correlators and the partition
function of the hermitian one matrix model. We present explicit results up to
genus two. We develop a version which gives directly the result in the double
scaling limit an... | 1993-02-03 | 2009-10-22 | [
"hep-th"
] | J. Ambj{\o}rn, L. Chekhov, C.F. Kristjansen and Yu. Makeenko |
hep-th/9302010 | Quantum Particle on a Quantum Circle | We describe a $q$-deformed dynamical system corresponding to the quantum free
particle moving along the circle. The algebra of observables is constructed and
discussed. We construct and classify irreducible representations of the system. | 1993-02-03 | 2010-11-01 | [
"hep-th"
] | T. Brzezinski, J. Rembielinski, K.A. Smolinski |
hep-th/9302011 | A Conformal Affine Toda Model of 2D-Black Holes the End-Point State and
the S-Matrix | In this paper we investigate in more detail our previous formulation of the
dilaton-gravity theory by Bilal--Callan--de~Alwis as a $SL_2$-conformal affine
Toda (CAT) theory. Our main results are: i) a field redefinition of the
CAT-basis in terms of which it is possible to get the black hole solutions
already known in t... | 1993-02-03 | 2008-11-26 | [
"hep-th"
] | F.Belgiorno, A.S.Cattaneo, M.Martellini and F.Fucito |
hep-th/9302016 | Quantization of the Closed Mini-Superspace Models as Bound States | Wheeler-DeWitt equation is applied to $k > 0$ Friedmann Robertson Walker
metric with various types of matter. It is shown that if the Universe ends in
the matter dominated era (e.g., radiation or pressureless gas) with zero
cosmological constant, then the resulting Wheeler-DeWitt equation describes a
bound state proble... | 1993-02-03 | 2010-11-01 | [
"hep-th",
"astro-ph",
"gr-qc"
] | Jong Hyun Kung |
hep-th/9302013 | Wave-type Solutions in the Nonlinear $\sigma$-model with the Dilaton | We study a class of classical dilaton vacua in string theory that depend on
the light-cone variable $z=t\pm x$ and, thus, have wavelike behavior. One of
the interesting results is the existence of a solution subclass with perfectly
regular space-time geometry, where the string coupling constant can be made
arbitrarily ... | 1993-02-03 | 2008-02-03 | [
"hep-th"
] | Eugene Tyurin |
hep-th/9302015 | Klein-Gordon-Langevin Quantum Geometry | We present a quantum geometric framework for stochastic quantisation in the
case of a free Klein-Gordon field on Euclidean space. In this approach the
noise is part of the background space, spacetime is fuzzy. We extend the notion
of sharp point limit and show how fuzzy spacetime and the Klein-Gordon field
gives the Eu... | 1993-02-03 | 2015-06-26 | [
"hep-th"
] | F. Vanderseypen |
hep-th/9302009 | Equilibrium Two-Dimensional Dilatonic Spacetimes | We study two-dimensional dilaton gravity coupled to massless scalar fields
for static solutions. In addition to the well known black hole, we find another
class of solutions that may be understood as that of the black hole in
equilibrium with a radiation bath. We claim that there is a solution that is
qualitatively unc... | 1993-02-03 | 2009-10-22 | [
"hep-th",
"gr-qc"
] | Michael Crescimanno |
hep-th/9302008 | Parameter restrictions in a non-commutative geometry model do not
survive standard quantum corrections | We have investigated the standard one-loop quantum corrections for a
particularly simple non-commutative geometry model containing fermions
interacting with a unique abelian gauge field and a unique scalar through
Yukawa couplings. In this model there are certain relations among the different
coupling constants quite s... | 1993-02-02 | 2008-11-26 | [
"hep-th"
] | E. Alvarez, J.M. Gracia-Bondia and C.P. Martin |
hep-th/9302007 | Vector Induced Lattice Gauge Theories | We consider vector induced lattice gauge theories, in particular we consider
the QED induced and we show that at negative temperature corresponds to the
dimer problem while at positive temperature it describes a gas of branched
polymers with loops. We argue that these models are critical at $D_{cr}=6$ for
$N\ne\infty$ ... | 1993-02-02 | 2015-06-26 | [
"hep-th"
] | Igor Pesando |
hep-th/9302006 | The Relation between Quantum W algebras and Lie algebras | By quantizing the generalized Drinfeld-Sokolov reduction scheme for arbitrary
$sl_2$ embeddings we show that a large set $\cal W$ of quantum W algebras can
be viewed as (BRST) cohomologies of affine Lie algebras. The set $\cal W$
contains many known $W$ algebras such as $W_N$ and $W_3^{(2)}$. Our formalism
yields a com... | 1993-02-02 | 2014-11-18 | [
"hep-th"
] | Jan de Boer and Tjark Tjin |
hep-th/9302005 | Lagrangian and Hamiltonian Formalism on a Quantum Plane | We examine the problem of defining Lagrangian and Hamiltonian mechanics for a
particle moving on a quantum plane $Q_{q,p}$. For Lagrangian mechanics, we
first define a tangent quantum plane $TQ_{q,p}$ spanned by noncommuting
particle coordinates and velocities. Using techniques similar to those of Wess
and Zumino, we c... | 1993-02-01 | 2009-10-22 | [
"hep-th"
] | M. Lukin, A. Stern and I. Yakushin |
hep-th/9302004 | New Vector Field and BRST Charges in 2-form Einstein Gravity | A new vector field is introduced into 2-form Einstein gravity in four
dimensions to restore a large symmetry of its topological version. Two
different expressions for the BRST charge are given in the system: one of them
associated with a set of irreducible symmetries and the other with a set of
on-shell reducible symme... | 1993-02-01 | 2009-10-22 | [
"hep-th"
] | A. Nakamichi and T. Ueno |
hep-th/9301132 | On the Supersymplectic Homogeneous Superspace Underlying the OSp(1/2)
Coherent States | In this work we extend Onofri and Perelomov's coherent states methods to the
recently introduced $OSp(1/2)$ coherent states. These latter are shown to be
parametrized by points of a supersymplectic supermanifold, namely the
homogeneous superspace $OSp(1/2)/U(1)$, which is clearly identified with a
supercoadjoint orbit ... | 1993-02-01 | 2009-10-22 | [
"hep-th"
] | Amine M. El Gradechi |
hep-th/9302002 | Off critical current algebras | We discuss the infinite dimensional algebras appearing in integrable
perturbations of conformally invariant theories, with special emphasis in the
structure of the consequent non-abelian infinite dimensional algebra
generalizing $W_\infty$ to the case of a non abelian group. We prove that the
pure left-symmetry as well... | 1993-02-01 | 2015-06-26 | [
"hep-th"
] | E. Abdalla, M.C.B. Abdalla, G. Sotkov, M. Stanishkov |
hep-th/9302003 | Momentum Analyticity and Finiteness of the 1-Loop Superstring Amplitude | The Type II Superstring amplitude to 1-loop order is given by an integral of
$\vartheta$-functions over the moduli space of tori, which diverges for real
momenta. We construct the analytic continuation which renders this amplitude
well defined and finite, and we find the expected poles and cuts in the complex
momentum ... | 1993-02-01 | 2009-10-22 | [
"hep-th"
] | Eric D'Hoker and D.H. Phong |
hep-th/9302001 | Spin-Anisotropy Commensurable Chains: Quantum Group Symmetries and N=2
SUSY | In this paper we consider a class of the 2D integrable models. These models
are higher spin XXZ chains with an extra condition of the commensurability
between spin and anisotropy. The mathematics underlying this commensurability
is provided by the quantum groups with deformation parameter being an Nth root
of unity. Ou... | 1993-02-01 | 2009-10-22 | [
"hep-th"
] | A.Berkovich, C.Gomez, G.Sierra |
hep-th/9301129 | Physical Properties of Four Dimensional Superstring Gravity Black Hole
Solutions | We consider the physical properties of four dimensional black hole solutions
to the effective action describing the low energy dynamics of the gravitational
sector of heterotic superstring theory. We compare the properties of the
external field strengths in the perturbative solution to the full $O(\alpha')$
string effe... | 1993-01-31 | 2009-09-15 | [
"hep-th",
"gr-qc",
"hep-ph"
] | B. A. Campbell, N. Kaloper, R. Madden and K. A. Olive |
hep-th/9301130 | Bosonisation in any dimension | The mechanism underlying any bosonisation or fermionisation is exposed.It is
shown that any local theory of fermions on a lattice in any spatial dimension
greater than one is equivalent to a local theory of Ising spins coupled to a
$Z_{2}$ gauge field.There is a close relation to the description of anyons
using a Chern... | 1993-01-31 | 2007-05-23 | [
"hep-th",
"cond-mat",
"hep-lat"
] | H.S.Sharatchandra |
hep-th/9301131 | Integrable Supersymmetry Breaking Perturbations of N=1,2 Superconformal
Minimal Models | We display a new integrable perturbation for both N=1 and N=2 superconformal
minimal models. These perturbations break supersymmetry explicitly. Their
existence was expected on the basis of the classification of integrable
perturbations of conformal field theories in terms of distinct classical KdV
type hierarchies sha... | 1993-01-31 | 2009-10-22 | [
"hep-th"
] | D. Depireux and P. Mathieu |
hep-th/9301128 | Geometry and Physics on $w_{\infty}$ Orbits | We apply the coadjoint orbit technique to the group of area preserving
diffeomorphisms (APD) of a 2D manifold, particularly to the APD of the
semi-infinite cylinder which is identified with $w_{\infty}$. The geometrical
action obtained is relevant to both $w$ gravity and 2D turbulence. For the
latter we describe the ha... | 1993-01-30 | 2016-09-06 | [
"hep-th"
] | K.G.Selivanov |
hep-th/9301126 | BFV--BRST Analysis of the Classical and Quantum q-deformations of the
sl(2) Algebra | BFV--BRST charge for q-deformed algebras is not unique. Different
constructions of it in the classical as well as in the quantum phase space for
the $q$-deformed algebra sl_q(2) are discussed. Moreover, deformation of the
phase space without deforming the generators of sl(2) is considered.
$\hbar$-q-deformation of the ... | 1993-01-29 | 2011-07-19 | [
"hep-th"
] | O. F. Dayi |
hep-th/9301127 | Automorphisms of the affine SU(3) fusion rules | We classify the automorphisms of the (chiral) level-k affine SU(3) fusion
rules, for any value of k, by looking for all permutations that commute with
the modular matrices S and T. This can be done by using the arithmetic of the
cyclotomic extensions where the problem is naturally posed. When k is divisible
by 3, the a... | 1993-01-29 | 2010-11-01 | [
"hep-th"
] | Philippe Ruelle |
hep-th/9301124 | O(3) Non-linear $\sigma$ model with Hopf term and Higher spin theories | Following our earlier work we argue in detail for the equivalence of the
nonlinear $\sigma$ model with Hopf term at~$\theta=\pi/2s$ ~and an interacting
spin-s theory. We give an ansatz for spin-s operators in the $\sigma$ model and
show the equivalence of the correlation functions.We also show the relation
between topo... | 1993-01-29 | 2019-08-17 | [
"hep-th"
] | T.R.Govindarajan, R.Shankar, N.Shaji and M.Sivakumar |
hep-th/9301122 | Hiding Anomalies | Anomalies can be anticipated at the classical level without changing the
classical cohomology, by introducing extra degrees of freedom. In the process,
the anomaly does not quite disappear. We show that, in fact, it is shifted to
new symmetries that come with the extra fields. | 1993-01-29 | 2009-10-22 | [
"hep-th"
] | F. De Jonghe, R. Siebelink and W. Troost |
hep-th/9301123 | Algorithm for Computing the $\BETA$-Function of Quantum Electrodynamics
in the Large N_f Expansion | By considering corrections to the asymptotic scaling functions of the photon
and electron in quantum electrodynamics with $\Nf$ flavours, we solve the
skeleton Dyson equations at $O(1/\Nf)$ in the large $\Nf$ expansion at the
$d$-dimensional critical point of the theory and deduce the critical exponent
$\beta^\prime(g_... | 1993-01-29 | 2015-06-26 | [
"hep-th"
] | J.A. Gracey |
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