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/9405020 | Path integral treatment of two- and three-dimensional delta-function
potentials and application to spin-1/2 Aharonov-Bohm problem | Delta-function potentials in two- and three-dimensional quantum mechanics are
analyzed by the incorporation of the self-adjoint extension method to the path
integral formalism. The energy-dependent Green functions for free particle plus
delta-function potential systems are explicitly calculated. Also the
energy-depende... | 1994-05-04 | 2009-10-28 | [
"hep-th"
] | D.K.Park |
hep-th/9405031 | Anisotropic Solutions For Orbifold Moduli From Duality Invariant Gaugino
Condensates | The values of the $T$ and $U$ moduli are studied for those ${\bf Z}_N $
Coxeter orbifolds with the property that some of the twisted sectors have fixed
planes for which the six-torus ${\bf T}^6 $ can not be decomposed into a direct
sum ${\bf T}^2\bigoplus {\bf T}^4 $ with the fixed plane lying in ${\bf T}^2 $.
Such mod... | 1994-05-04 | 2015-06-26 | [
"hep-th"
] | D. Bailin, A. Love, W.A. Sabra and S. Thomas |
hep-th/9405029 | Supersymmetry and Quantum Mechanics | In the past ten years, the ideas of supersymmetry have been profitably
applied to many nonrelativistic quantum mechanical problems. In particular,
there is now a much deeper understanding of why certain potentials are
analytically solvable and an array of powerful new approximation methods for
handling potentials which... | 1994-05-04 | 2010-11-01 | [
"hep-th"
] | Fred Cooper, Avinash Khare and Uday Sukhatme |
hep-th/9405028 | Spatial Geometry of the Electric Field Representation of Non-Abelian
Gauge Theories | A unitary transformation $\Ps [E]=\exp (i\O [E]/g) F[E]$ is used to simplify
the Gauss law constraint of non-abelian gauge theories in the electric field
representation. This leads to an unexpected geometrization because
$\o^a_i\equiv -\d\O [E]/\d E^{ai}$ transforms as a (composite) connection. The
geometric informatio... | 1994-05-04 | 2009-10-08 | [
"hep-th"
] | M. Bauer, D.Z. Freedman, P.E. Haagensen |
hep-th/9405025 | On SW-minimal models and N=1 supersymmetric Quantum Toda-field theories | We construct free field representations of the $SW$-algebras SW(3/2,2) and
SW(3/2,3/2,2) by using the corresponding Toda-Field-Theories. In constructing
the series of minimal models using covariant vertex operators, we find a
necessary restriction on the Cartan matrix of the Super-Lie-Algebra, also for
the general case... | 1994-05-04 | 2015-06-26 | [
"hep-th"
] | Steffen Mallwitz |
hep-th/9405024 | Effective Mu-Term in Superstring Theory | In four-dimensional compactifications of the heterotic superstring theory the
K\"ahler potential has a form which generically induces a superpotential mass
term for Higgs particles once supersymmetry is broken at low energies. This
``$\mu$-term'' is analyzed in a model-independent way at the tree level and in
the one-l... | 1994-05-04 | 2010-11-01 | [
"hep-th",
"hep-ph"
] | I. Antoniadis, E. Gava, K.S. Narain and T.R. Taylor |
hep-th/9405026 | Strings Propagating in the 2+1 Dimensional Black Hole Anti de Sitter
Spacetime | We study the string propagation in the 2+1 black hole anti de Sitter
background (2+1 BH-ADS). We find the first and second order fluctuations around
the string center of mass and obtain the expression for the string mass. The
string motion is stable, all fluctuations oscillate with real frequencies and
are bounded, eve... | 1994-05-04 | 2009-10-28 | [
"hep-th"
] | A.L. Larsen and N. Sanchez |
hep-th/9405027 | Parity violation, anyon scattering and the mean field approximation | Some general features of the scattering of boson-based anyons with an added
non-statistical interaction are discussed. Periodicity requirements of the
phase shifts are derived, and used to illustrate the danger inherent in
separating these phase shifts into the well-known pure Aharanov-Bohm phase
shifts, and an additio... | 1994-05-04 | 2011-08-11 | [
"hep-th"
] | D. Caenepeel and R. MacKenzie |
hep-th/9405023 | The Highest Weight Property for the $SU_{q}(n)$ Invariant Spin Chains | The $SU_{q}(n)$ generators are obtained as large spectral parameter limit of
the Yang-Baxter operators in the integrable $SU_{q}(n)$ invariant vertex model.
The commutation relations, including Serre relations, are obtained as limits of
the Yang-Baxter equations. The recently found eigenvectors of the $SU_{q}(n)$
invar... | 1994-05-04 | 2009-10-28 | [
"hep-th",
"nlin.SI",
"solv-int"
] | H.J. de Vega and A. Gonz\'alez--Ruiz |
hep-th/9405014 | Form-Factor Bootstrap and the Operator Content of Perturbed Minimal
Models | The form-factor bootstrap approach is applied to the perturbed minimal models
$M_{2,2n+3}$ in the direction of the primary field $\phi_{1,3}$. These theories
are integrable and contain $n$ massive scalar particles, whose $S$--matrix is
purely elastic. The form-factor equations do not refer to a specific operator.
We us... | 1994-05-03 | 2009-10-28 | [
"hep-th"
] | A. Koubek |
hep-th/9405015 | Canonical Structure of 2D Black Holes | We determine the canonical structure of two-dimensional black-hole solutions
arising in $2D$ dilaton gravity. By choosing the Cauchy surface appropriately
we find that the canonically conjugate variable to the black hole mass is given
by the difference of local (Schwarzschild) time translations at right and left
spatia... | 1994-05-03 | 2009-10-28 | [
"hep-th"
] | J. Navarro-Salas, M. Navarro and C. F. Talavera |
hep-th/9405013 | Planckian Scatterings of Massive Particles and Gravitational Shock Waves | The scattering process of two particles at Planck energies or beyond is
calculated using the gravitational shock wave metric for a massive black hole.
Then, the scattering between a heavy mass particle and a small mass one is deal
with. The cross section contains an extra new term of $\sigma \propto G^3$ as
the correct... | 1994-05-03 | 2007-05-23 | [
"hep-th"
] | Koichi HAYASHI and Toshiharu SAMURA |
hep-th/9405017 | Superspace Supervortices | We present the theory describing supersymmetrical vortices in the curved
superspace of the (1,0) supergravity. The action is defined as a (1,0) locally
supersymmetric $SU(2)/U(1)$ coset perturbed by the cosmological constant-like
term. The perturbation is such that it preserves the integrability of the coset
model. Bec... | 1994-05-03 | 2009-10-28 | [
"hep-th"
] | S. J. Gates Jr. and O. A. Soloviev |
hep-th/9405018 | Relation Between Hyperelliptic Integrals | A simple property of the integrals over the hyperelliptic surfaces of
arbitrary genus is observed. Namely, the derivatives of these integrals with
respect to the branching points are given by the linear combination of the same
integrals. We check that this property is responsible for the solution to the
level zero Kniz... | 1994-05-03 | 2009-10-28 | [
"hep-th"
] | S. Pakuliak and A. Perelomov |
hep-th/9405016 | Perturbed Gauged WZNW Models | We discuss a new type of unitary perturbations around conformal theories
inspired by the $\sigma$-model perturbation of the nonunitary WZNW model. We
show that the nonunitary level $k$ WZNW model perturbed by its sigma model term
goes to the unitary level $-k$ WZNW model. When plugged into the gauged WZNW
model the giv... | 1994-05-03 | 2009-10-28 | [
"hep-th"
] | O. A. Soloviev |
hep-th/9405005 | Random matrix theory and $QCD_3$ | We suggest that the spectral properties near zero virtuality of three
dimensional QCD, follow from a Hermitean random matrix model. The exact
spectral density is derived for this family of random matrix models both for
even and odd number of fermions. New sum rules for the inverse powers of the
eigenvalues of the Dirac... | 1994-05-02 | 2009-10-28 | [
"hep-th",
"cond-mat"
] | J.J.M. Verbaarschot and I. Zahed |
hep-th/9405006 | Chiral random matrix theory and QCD | As was shown by Leutwyler and Smilga, the fact that chiral symmetry is broken
and the existence of a effective finite volume partition function leads to an
infinite number of sum rules for the eigenvalues of the Dirac operator in QCD.
In this paper we argue these constraints, together with universality arguments
from q... | 1994-05-02 | 2009-09-25 | [
"hep-th",
"cond-mat"
] | Jacobus Verbaarschot |
hep-th/9405012 | Eta-Invariants and Determinant Lines | We study eta-invariants on odd dimensional manifolds with boundary. The
dependence on boundary conditions is best summarized by viewing the
(exponentiated) eta-invariant as an element of the (inverse) determinant line
of the boundary. We prove a gluing law and a variation formula for this
invariant. This yields a new, ... | 1994-05-02 | 2016-09-06 | [
"hep-th",
"dg-ga",
"math.DG"
] | Xianzhe Dai and Daniel S. Freed |
hep-th/9404193 | Discrete Time from Quantum Physics | 't Hooft has recently developed a discretisation of (2+1) gravity which has a
multiple-valued Hamiltonian and which therefore admits quantum time evolution
only in discrete steps. In this paper, we describe several models in the
continuum with single-valued equations of motion in classical physics, but with
multiple-va... | 1994-05-02 | 2009-10-28 | [
"hep-th",
"gr-qc",
"hep-ph"
] | A.P.Balachandran and L.Chandar |
hep-th/9405008 | Dynamical correlation functions in the Calogero-Sutherland model | We compute the dynamical Green function and density-density correlation in
the Calogero-Sutherland model for all integer values of the coupling constant.
An interpretation of the intermediate states in terms of quasi-particles is
found. | 1994-05-02 | 2009-10-28 | [
"hep-th",
"cond-mat"
] | F. Lesage, V. Pasquier and D. Serban |
hep-th/9405001 | Surface Motions and Fluid Dynamics | A certain class of surface motions, including those of a relativistic
membrane minimizing the 3-dimensional volume swept out in Minkowski-space, is
shown to be equivalent to 3-dimensional steady-state irrotational inviscid
isentropic gas-dynamics. The SU($\infty $) Nahm equations turn out to
correspond to motions where... | 1994-05-02 | 2009-10-28 | [
"hep-th"
] | Jens Hoppe |
hep-th/9405007 | The Internal Geometry of an Evaporating Black Hole | We present a semi-classical model for the formation and evaporation of a four
dimensional black hole. We solve the equations numerically and obtain solutions
describing the entire the space-time geometry from the collapse to the end of
the evaporation. The solutions satisfy the evaporation law: $\dot M \propto
-M^{-2}$... | 1994-05-02 | 2010-11-01 | [
"hep-th",
"gr-qc"
] | Renaud Parentani and Tsvi Piran |
hep-th/9405032 | Fermion Scattering off Dilatonic Black Holes | The scattering of massless fermions off magnetically charged dilatonic black
holes is reconsidered and a violation of unitarity is found. Even for a single
species of fermion it is possible for a particle to disappear into the black
hole with its information content. | 1994-05-02 | 2009-10-28 | [
"hep-th"
] | A. GHOSH and P. MITRA (Saha Institute of Nuclear Physics, Calcutta) |
hep-th/9405004 | Two-matrix model and c=1 string theory | We show that the most general two--matrix model with bilinear coupling
underlies $c=1$ string theory. More precisely we prove that $W_{1+\infty}$
constraints, a subset of the correlation functions and the integrable hierarchy
characterizing such two--matrix model, correspond exactly to the $W_{1+\infty}$
constraints, t... | 1994-05-02 | 2009-10-28 | [
"hep-th"
] | L.Bonora and C.S.Xiong |
hep-th/9405003 | Spin--spin critical point correlation functions for the 2D random bond
Ising and Potts models | We compute the combined two and three loop order correction to the spin-spin
correlation functions for the 2D Ising and q-states Potts model with random
bonds at the critical point. The procedure employed is the renormalisation
group approach for the perturbation series around the conformal field theories
representing ... | 1994-05-02 | 2009-10-28 | [
"hep-th",
"cond-mat",
"hep-lat"
] | Vladimir Dotsenko, Marco Picco and Pierre Pujol |
hep-th/9405009 | Self-adjoint Extension Approach to the spin-1/2 Aharonov-Bohm-Coulomb
Problem | The spin-1/2 Aharonov-Bohm problem is examined in the Galilean limit for the
case in which a Coulomb potential is included. It is found that the application
of the self-adjoint extension method to this system yields singular solutions
only for one-half the full range of flux parameter which is allowed in the
limit of v... | 1994-05-02 | 2009-10-28 | [
"hep-th"
] | D.K. Park |
hep-th/9405002 | Moduli Spaces and Target Space Duality Symmetries in $(0,2)\; Z_N$
Orbifold Theories with Continuous Wilson Lines | We present the coset structure of the untwisted moduli space of heterotic
$(0,2) \; Z_N$ orbifold compactifications with continuous Wilson lines. For the
cases where the internal 6-torus $T_6$ is given by the direct sum $T_4 \oplus
T_2$, we explicitly construct the K\"{a}hler potentials associated with the
underlying 2... | 1994-05-02 | 2009-10-07 | [
"hep-th"
] | G. Lopes Cardoso, D. Luest and T. Mohaupt |
hep-th/9405010 | Asymptotics for the Fredholm Determinant of the Sine Kernel on a Union
of Intervals | In the bulk scaling limit of the Gaussian Unitary Ensemble of Hermitian
matrices the probability that an interval of length $s$ contains no eigenvalues
is the Fredholm determinant of the sine kernel $\sin(x-y)\over\pi(x-y)$ over
this interval. A formal asymptotic expansion for the determinant as $s$ tends
to infinity w... | 1994-05-02 | 2009-10-28 | [
"hep-th",
"math.CA",
"nlin.SI",
"solv-int"
] | Harold Widom |
hep-th/9405011 | Generalized Hirota Equations and Representation Theory. I. The case of
$SL(2)$ and $SL_q(2)$" | This paper begins investigation of the concept of ``generalized
$\tau$-function'', defined as a generating function of all the matrix elements
of a group element $g \in G$ in a given highest-weight representation of a
universal enveloping algebra ${\cal G}$. In the generic situation, the
time-variables correspond to th... | 1994-05-02 | 2009-10-28 | [
"hep-th",
"nlin.SI",
"solv-int"
] | A.Gerasimov, S.Khoroshkin, D.Lebedev, A.Mironov, A.Morozov |
hep-th/9404191 | On `rolling moduli' solutions in string cosmology | Given a static string solution with some free constant parameters (`moduli')
it may be possible to construct a time-dependent solution by just replacing the
moduli by some functions of time. We present several examples when such
`rolling moduli' ansatz is consistent. In particular, the anisotropic D=4
cosmological solu... | 1994-05-01 | 2009-09-17 | [
"hep-th"
] | A.A. Tseytlin |
hep-th/9404192 | Density Correlation Functions in Calogero Sutherland Models | Using arguments from two dimensional Yang-Mills theory and the collective
coordinate formulation of the Calogero-Sutherland model, we conjecture the
dynamical density correlation function for coupling $l$ and $1/l$, where $l$ is
an integer. We present overwhelming evidence that the conjecture is indeed
correct. | 1994-05-01 | 2011-07-19 | [
"hep-th",
"cond-mat"
] | Joseph A. Minahan and Alexios P. Polychronakos |
hep-th/9404190 | Supersymmetry algebras and Lorentz invariance for d=10 Super Yang-Mills | We consider ways in which conventional supersymmetry can be embedded in the
set of more general fermionic transformations proposed recently [\Ref{B}] as a
framework in which to study $d=10$ super Yang-Mills. Solutions are exhibited
which involve closed algebras of various numbers of supersymmetries together
with their ... | 1994-04-30 | 2009-10-28 | [
"hep-th"
] | Jonathan M. Evans |
hep-th/9404189 | Multicritical Behavior of $c=1$ Matrix Model | We discuss multicritical behavior of $c=1$ matrix model, extending the recent
work of ref. \cite{CIO} on a nonperturbative completion of the density of
states function. For the odd orders of multicriticality, we are able to
determine the higher genus contributions and a nonperturbative completion from
the WKB wave func... | 1994-04-30 | 2016-09-06 | [
"hep-th"
] | H. Itoyama and M. Koike |
hep-th/9404188 | Boundary Bound States in Affine Toda Field Theory | We demonstrate that the generalization of the Coleman-Thun mechanism may be
applied to the situation, when considering scattering processes in
1+1-dimensions in the presence of reflecting boundaries. For affine Toda field
theories we find that the binding energies of the bound states are always half
the sum over a set ... | 1994-04-30 | 2015-06-26 | [
"hep-th"
] | A. Fring and R.Koberle |
hep-th/9404180 | On string cosmology and the RG flow in 2d field theory | Time-dependent solutions of bosonic string theory resemble renormalisation
group trajectories in the space of 2d field theories: they often interpolate
between repulsive and attractive static solutions. It is shown that the
attractive static solutions are those whose spatial sections are minima of
|\bar c-25|, where \b... | 1994-04-29 | 2009-09-17 | [
"hep-th"
] | C.Schmidhuber and A.A.Tseytlin |
hep-th/9404182 | Only hybrid anyons can exist in broken symmetry phase of nonrelativistic
$U(1)^{2}$ Chern-Simons theory | We present two examples of parity-invariant $[U(1)]^{2}$ Chern-Simons-Higgs
models with spontaneously broken symmetry. The models possess topological
vortex excitations. It is argued that the smallest possible flux quanta are
composites of one quantum of each type $(1,1)$. These hybrid anyons will
dominate the statisti... | 1994-04-29 | 2009-10-28 | [
"hep-th",
"cond-mat"
] | Jacek Dziarmaga |
hep-th/9404187 | The one-loop effective action and trace anomaly in four dimensions | The one-loop effective action for a generic set of quantum fields is
calculared as a nonlocal expansion in powers of the curvatures (field
strengths). This expansion is obtained to third order in the curvature. It is
stressed that the covariant vertices are finite. The trace anomaly in four
dimensions is obtained direc... | 1994-04-29 | 2009-10-28 | [
"hep-th"
] | A.O.Barvinsky, Yu.V.Gusev, G.A.Vilkovisky and V.V.Zhytnikov |
hep-th/9404177 | Extended BPH Renormalization of Cutoff Scalar Field Theories | We show that general cutoff scalar field theories in four dimensions are
perturbatively renormalizable through the use of diagrammatic techniques and an
adapted BPH renormalization method. Weinberg's convergence theorem is used to
show that operators in the Lagrangian with dimension greater than four, which
are divided... | 1994-04-29 | 2009-10-28 | [
"hep-th"
] | Gordon Chalmers |
hep-th/9404181 | Spontaneous Breaking of Parity in 2+1-Dimensional Thirring Model | A new aspect of the vacuum structure of 2+1-dimensional Thirring model is
presented. Using the Fierz identity, we split the current-current four-Fermi
interaction in terms of a matrix valued auxiliary scalar field and compute its
effective potential. Energy consideration shows that contrary to earlier
expectations, par... | 1994-04-29 | 2007-05-23 | [
"hep-th"
] | Y.M. Ahn, B.K.Chung, J.-M.Chung and Q-Han Park |
hep-th/9404184 | Mirror Symmetry as a Gauge Symmetry | It is shown that in string theory mirror duality is a gauge symmetry (a Weyl
transformation) in the moduli space of $N=2$ backgrounds on group manifolds,
and we conjecture on the possible generalization to other backgrounds, such as
Calabi-Yau manifolds. | 1994-04-29 | 2010-04-07 | [
"hep-th"
] | Amit Giveon and Edward Witten |
hep-th/9404185 | The Classification of SU(3) Modular Invariants Revisited | The SU(3) modular invariant partition functions were first completely
classified in Ref.\ \SU. The purpose of these notes is four-fold: \item{(i)}
Here we accomplish the SU(3) classification using only the most basic facts:
modular invariance; $M_{\la\mu}\in{\bf Z}_{\ge}$; and $M_{00}=1$. In \SU{} we
made use of less e... | 1994-04-29 | 2007-05-23 | [
"hep-th"
] | Terry Gannon |
hep-th/9404186 | Supermanifolds, Rigid Manifolds and Mirror Symmetry | By providing a general correspondence between Landau-Ginzburg orbifolds and
non-linear sigma models, we find that the elusive mirror of a rigid manifold is
actually a supermanifold. We also discuss when sigma models with super-target
spaces are conformally invariant and describe their chiral rings. Both
supermanifolds ... | 1994-04-29 | 2009-10-28 | [
"hep-th"
] | S. Sethi |
hep-th/9404179 | Classical N=2 W-superalgebras From Superpseudodifferential Operators | We study the supersymmetric Gelfand-Dickey algebras associated with the
superpseudodifferential operators of positive as well as negative leading
order. We show that, upon the usual constraint, these algebras contain the N=2
super Virasoro algebra as a subalgebra as long as the leading order is odd. The
decompositions ... | 1994-04-29 | 2009-10-28 | [
"hep-th"
] | Wen-Jui Huang, J.C. Shaw and H.C. Yen |
hep-th/9404183 | Gauge Field Improvement,Form-Scalar Duality and Conformal Invariance | The problem of maintaining scale and conformal invariance in Maxwell and
general N-form gauge theories away from their critical dimension d=2(N+1) is
analyzed.We first exhibit the underlying group-theoretical clash between
locality,gauge,Lorentz and conformal invariance require- ments. "Improved"
traceless stress tenso... | 1994-04-29 | 2008-11-26 | [
"hep-th",
"gr-qc"
] | S.Deser and A.Schwimmer |
hep-th/9404173 | High energy QCD as a completely integrable model | We show that the one-dimensional lattice model proposed by Lipatov to
describe the high energy scattering of hadrons in multicolor QCD is completely
integrable. We identify this model as the XXX Heisenberg chain of noncompact
spin $s=0$ and find the conservation laws of the model. A generalized Bethe
ansatz is develope... | 1994-04-28 | 2009-10-28 | [
"hep-th",
"hep-ph"
] | L.D.Faddeev and G.P.Korchemsky |
hep-th/9404175 | Counting Strings and Phase Transitions in 2D QCD | Several string theories related to QCD in two dimensions are studied. For
each of these theories the large $N$ free energy on a (target) sphere of area
$A$ is calculated. By considering theories with different subsets of the
geometrical structures involved in the full QCD${}_2$ string theory, the
different contribution... | 1994-04-28 | 2008-02-03 | [
"hep-th"
] | W. Taylor |
hep-th/9404178 | Implications of an Ambiguity in J.S. Bell's Analysis of the
Einstein-Podolsky-Rosen Problem | An ambiguity is pointed out in J.S. Bell's argument that the distinction
between quantum mechanics and hidden variable theories cannot be found in the
behavior of single-particle beams. Within the context of theories for which
states are unambiguously defined it is shown that the question of whether
quantum mechanics o... | 1994-04-28 | 2007-05-23 | [
"hep-th",
"gr-qc"
] | Daniel I. Fivel |
hep-th/9404170 | Canonical BRST Quantisation of Worldsheet Gravities | We reformulate the BRST quantisation of chiral Virasoro and $W_3$ worldsheet
gravities. Our approach follows directly the classic BRST formulation of
Yang-Mills theory in employing a derivative gauge condition instead of the
conventional conformal gauge condition, supplemented by an introduction of
momenta in order to ... | 1994-04-28 | 2009-10-07 | [
"hep-th"
] | R. Mohayaee, C.N. Pope, K.S. Stelle and K.W. Xu |
hep-th/9404172 | Black holes as quantum membranes: path integral approach | We describe the horizon of a quantum black hole in terms of a dynamical
surface which defines the boundary of space-time as seen by external static
observers, and we define a path integral in the presence of this dynamical
boundary. Using renormalization group arguments, we find that the dynamics of
the horizon is gove... | 1994-04-28 | 2009-10-28 | [
"hep-th",
"gr-qc"
] | Michele Maggiore |
hep-th/9404176 | Classification of (2,2) Compactifications by Free Fermions 2 | We present a classification of (2,2) free field compactifations with one
twist in which only 95 distinct models (generations and antigenerations) are
found. Models with three generations and no antigenerations are given. | 1994-04-28 | 2010-11-01 | [
"hep-th",
"hep-ph"
] | S.A. Abel, C.M.A. Scheich |
hep-th/9404171 | Conformal Invariance and Renormalization Group in Quantum Gravity Near
Two Dimensions | We study quantum gravity in $2+\epsilon$ dimensions in such a way to preserve
the volume preserving diffeomorphism invariance. In such a formulation, we
prove the following trinity: the general covariance, the conformal invariance
and the renormalization group flow to Einstein theory at long distance. We
emphasize that... | 1994-04-28 | 2011-08-17 | [
"hep-th"
] | T. Aida, Y. Kitazawa, H. Kawai and M. Ninomiya |
hep-th/9404174 | Multiple Ising Spins Coupled to 2d Quantum Gravity | We study a model in which p independent Ising spins are coupled to 2d quantum
gravity (in the form of dynamical planar phi-cubed graphs). Consideration is
given to the p tends to infinity limit in which the partition function becomes
dominated by certain graphs; we identify most of these graphs. A truncated
model is so... | 1994-04-28 | 2009-10-28 | [
"hep-th"
] | M.G. Harris and J.F. Wheater |
hep-th/9404165 | Braid Group Action and Quantum Affine Algebras | We lift the lattice of translations in the extended affine Weyl group to a
braid group action on the quantum affine algebra. This action fixes the
Heisenberg subalgebra pointwise. Loop like generators are found for the algebra
which satisfy the relations of Drinfel$'$d's new realization. Coproduct
formulas are given an... | 1994-04-27 | 2009-10-28 | [
"hep-th",
"math.QA"
] | Jonathan Beck |
hep-th/9404164 | Induced Parity Violation in Odd Dimensions | One of the interesting features about field theories in odd dimensions is the
induction of parity violating terms and well-defined {\em finite} topological
actions via quantum loops if a fermion mass term is originally present and
conversely. Aspects of this issue are illustrated for electrodynamics in 2+1
and 4+1 dime... | 1994-04-27 | 2015-06-26 | [
"hep-th"
] | R. Delbourgo and A. B. Waites |
hep-th/9404166 | Vacuum Values for Auxiliary String Fields | Auxiliary string fields are introduced in light-cone gauge string field
theory in order to express contact interactions as contractions of cubic
vertices. The auxiliary field in the purely closed-string bosonic theory may be
given a non-zero expectation value, leading to a phase in which world-sheets
have boundaries. | 1994-04-27 | 2009-10-28 | [
"hep-th"
] | Michael B. Green |
hep-th/9404167 | The Stochastic Quantization Method for Systems with Dissipation | The stochastic quantization of dissipative systems is discussed. It is shown
that in order to stochastically quantize a system with dissipation, one has to
restrict the Fourier transform of the space-time variable to the positive half
domain in the complex plane. This breaks the time-reversal invariance, which
manifest... | 1994-04-27 | 2009-10-28 | [
"hep-th"
] | Rodanthy Tzani |
hep-th/9404169 | Quantum Mechanics for Totally Constrained Dynamical Systems and Evolving
Hilbert Spaces | We analyze the quantization of dynamical systems that do not involve any
background notion of space and time. We give a set of conditions for the
introduction of an intrinsic time in quantum mechanics. We show that these
conditions are a generalization of the usual procedure of deparametrization of
relational theories ... | 1994-04-27 | 2011-08-19 | [
"hep-th"
] | Ricardo Doldan, Pablo Mora and Rodolfo Gambini |
hep-th/9404168 | Weinstein -- Xu invariants and link group representations | Topological interpretation of the link invariants associated with the
Weinstein--Xu classical solutions of the quantum Yang-Baxter equation are
provided. | 1994-04-27 | 2008-02-03 | [
"hep-th",
"math.QA"
] | A. A. Balinsky |
hep-th/9404163 | Detection of Particles Under Potential Barrier | We introduce a model detector which registers the passage of a particle
through the detector location, without substantially perturbing the particle
wave function. (The exact time of passage is not determined in such
measurements.) We then show that our detector can operate in a classically
forbidden region and registe... | 1994-04-26 | 2009-09-25 | [
"hep-th"
] | Alexander Vilenkin and Serge Winitzki |
hep-th/9404159 | QCD(1+1) with massless quarks and gauge covariant Sugawara construction | We use the Hamiltonian framework to study massless QCD$_{1+1}$, i.e.\
Yang-Mills gauge theories with massless Dirac fermions on a cylinder (= (1+1)
dimensional spacetime $S^1\times \R$) and make explicite the full,
non-perturbative structure of these quantum field theory models. We consider
$N_F$ fermion flavors and ga... | 1994-04-26 | 2009-10-28 | [
"hep-th"
] | E. Langmann and G.W. Semenoff |
hep-th/9404160 | 3nj-symbols and D-dimensional quantum gravity | The model which generalizes Ponzano and Regge $3D$ and
Carfora-Martellini-Marzuoli $4D$ euclidean quantum gravity is considered. The
euclidean Einstein-Regge action for a $D$-simplex is given in the semiclassical
limit by a gaussian integral of a suitable $3nj$-symbol. | 1994-04-26 | 2007-05-23 | [
"hep-th"
] | Paul Demkin |
hep-th/9404161 | Uniform Asymptotic Solutions of a System of two Schr\"odinger Equations
with Potential-Curve-Crossing Point | A formal uniform asymptotic solution of the system of differential equations
$ h^{2}\frac{d^{2}U_{1}}{dz^{2}}+\Phi_{1} U_{1}=\alpha U_{2} $ , $
h^{2}\frac{d^{2}U_{2}}{dz^{2}}+\Phi_{2} U_{2}=\alpha U_{1}$ , for $ z\in D$ and
for h real, large is obtained, when D contains curve-crossing point. Asymptotic
approximations f... | 1994-04-26 | 2009-10-28 | [
"hep-th"
] | Irina Jakushina |
hep-th/9404162 | Covariant Quantization of the Green-Schwarz Superstring in a Calabi-Yau
Background | After adding a scalar chiral boson to the usual superspace variables, the
four-dimensional Green-Schwarz superstring is quantized in a manifestly SO(3,1)
super-Poincar\'e covariant manner. The constraints are all first-class and form
an N=2 superconformal algebra with $c=-3$. Since the Calabi-Yau degrees of
freedom are... | 1994-04-26 | 2010-04-06 | [
"hep-th"
] | Nathan Berkovits |
hep-th/9404154 | The Unstable System in Relativistic Quantum Mechanics | A soluble model for the relativistically description of an unstable system is
given in terms of relativistic quantum field theory, with a structure similar
to Van Hove's generalization of the Lee model in the non-relativistic theory. | 1994-04-25 | 2009-10-28 | [
"hep-th"
] | L.P. Horwitz |
hep-th/9404155 | Infrared and Ultraviolet Behaviour of Effective Scalar Field Theory | We consider the infrared and ultraviolet behaviour of the effective quantum
field theory of a single $Z_2$ symmetric scalar field. In a previous paper we
proved to all orders in perturbation theory the renormalizability of massive
effective scalar field theory using Wilson's exact renormalization group
equation. Here w... | 1994-04-25 | 2015-06-26 | [
"hep-th",
"hep-ph"
] | R. D. Ball and R. S. Thorne |
hep-th/9404157 | Strings, Black Holes and Conformal Field Theory | The SL(2,R)/U(1) gauged Wess-Zumino-Witten model is an exact conformal field
theory describing a black hole in two-dimensional space-time. The free field
approach of Bershadsky and Kutasov is a suitable formulation of this CFT in
order to compute physically interesting quantities of this black hole. We find
the space-t... | 1994-04-25 | 2016-09-06 | [
"hep-th"
] | Katrin Becker |
hep-th/9404153 | Supergravity before and after 1976 | This paper is part of the lecture given at the TH Division of CERN and
devoted to the CXXV anniversary of the birthday of Elie Cartan (1869-1951). It
is shown how the methods of differential geometry, due to E. Cartan, were
applied to the construction of the supersymmetry transformation law and to the
actions for Golds... | 1994-04-25 | 2007-05-23 | [
"hep-th"
] | D.V. Volkov |
hep-th/9404158 | Regge Asymptotics of Scattering with Flavour Exchange in QCD | The contribution to the perturbative Regge asymptotics of the exchange of two
reggeized fermions with opposite helicity is investigated. The methods of
conformal symmetry known for the case of gluon exchange are extended to this
case where double-logarithmic contributions dominate the asymptotics. The Regge
trajectorie... | 1994-04-25 | 2009-10-28 | [
"hep-th"
] | R. Kirschner |
hep-th/9404156 | The Decoupling Theorem in Effective Scalar Field Theory | We consider decoupling in the context of an effective quantum field theory of
two scalar fields with well separated mass scales and a $Z_2\times Z_2$
symmetry. We first prove, using Wilson's exact renormalization group equation,
that the theory is renormalizable, in the same way that we showed in a previous
paper that ... | 1994-04-25 | 2010-11-01 | [
"hep-th",
"hep-ph"
] | R. D. Ball and R. S. Thorne |
hep-th/9404152 | Thermodynamics of Non-Relativistic Scattering Theory | We use thermodynamic Bethe ansatz to study nonrelativistic scattering theory
of low energy excitations of 1D Hubbard model, using the $S$-matrices proposed
by E\ss ler and Korepin. This model can be described by two types of excitation
states, holons and spinons, as asymptotic states. In the attractive regime, the
spin... | 1994-04-25 | 2010-02-05 | [
"hep-th",
"cond-mat"
] | Changrim Ahn, Kong-Ju-Bock Lee, and Soonkeon Nam |
hep-th/9404150 | Renormalisation Group Flows and Conserved Vector Currents | Irreversibility of RG flows in two dimensions is shown using conserved vector
currents. Out of a conserved vector current, a quantity decreasing along the RG
flow is built up such that it is stationary at fixed points where it coincides
with the constant coefficient of the two current correlation function. For
Wess-Zum... | 1994-04-24 | 2009-10-28 | [
"hep-th"
] | Xavier Vilasis-Cardona |
hep-th/9404149 | Folds in 2D String Theories | We study maps from a 2D world-sheet to a 2D target space which include folds.
The geometry of folds is discussed and a metric on the space of folded maps is
written down. We show that the latter is not invariant under area preserving
diffeomorphisms of the target space. The contribution to the partition function
of map... | 1994-04-24 | 2019-08-15 | [
"hep-th"
] | O. Ganor, J. Sonnenschein and S. Yankielowicz |
hep-th/9404151 | String Theory on K3 Surfaces | The moduli space of N=(4,4) string theories with a K3 target space is
determined, establishing in particular that the discrete symmetry group is the
full integral orthogonal group of an even unimodular lattice of signature
(4,20). The method combines an analysis of the classical theory of K3 moduli
spaces with mirror s... | 1994-04-24 | 2008-02-03 | [
"hep-th",
"alg-geom",
"math.AG"
] | P.S. Aspinwall and D.R. Morrison |
hep-th/9404148 | The Zero Tension Limit of The Virasoro Algebra and the Central Extension | We argue that the Virasoro algebra for the closed bosonic string can be cast
in a form which is suitable for the limit of vanishing string tension. In this
form the limit of the Virasoro algebra gives the null string algebra. The
anomalous central extension is seen to vanish as well when $T\to 0$. | 1994-04-23 | 2015-06-26 | [
"hep-th"
] | F. Lizzi (Napoli) |
hep-th/9404144 | Comment on ``the Klein-Gordon Oscillator'' | The different ways of description of the $S=0$ particle with oscillator-like
interaction are considered. The results are in conformity with the previous
paper of S. Bruce and P. Minning. | 1994-04-23 | 2015-06-26 | [
"hep-th"
] | Valeri V. Dvoeglazov |
hep-th/9404147 | Exponential behavior of a quantum system in a macroscopic medium | An exponential behavior at all times is derived for a solvable dynamical
model in the weak-coupling, macroscopic limit. Some implications for the
quantum measurement problem are discussed, in particular in connection with
dissipation. | 1994-04-23 | 2009-10-28 | [
"hep-th"
] | Hiromichi Nakazato, Mikio Namiki, Saverio Pascazio |
hep-th/9404146 | Phase Space Structure of Non-Abelian Chern-Simons Particles | We investigate the classical phase space structure of $N$ $SU(n+1)$
non-Abelian Chern-Simons (NACS) particles by first constructing the product
space of associated $SU(n+1)$ bundle with ${\bf CP}^n$ as the fiber. We
calculate the Poisson bracket using the symplectic structure on the associated
bundle and find that the ... | 1994-04-23 | 2009-10-28 | [
"hep-th"
] | Myung-Ho Kim and Phillial Oh |
hep-th/9404145 | The Dirac-Dowker Oscillator | The oscillator-like interaction is introduced in the equation for the
particle of arbitrary spin, given by Dirac and re-written to a matrix form by
Dowker. | 1994-04-23 | 2011-07-19 | [
"hep-th"
] | Valeri V. Dvoeglazov |
hep-th/9404143 | Non Trivial Saddle Points and Band Structure of Bound States of the Two
Dimensional O(N) Vector Model | We discuss O(N) invariant scalar field theories in 0+1 and 1+1 space-time
dimensions. Combining ordinary ``Large N" saddle point techniques and simple
properties of the diagonal resolvent of one dimensional Schr\"odinger operators
we find {\it exact} non-trivial (space dependent) solutions to the saddle point
equations... | 1994-04-22 | 2009-10-28 | [
"hep-th",
"cond-mat",
"hep-ph"
] | Joshua Feinberg |
hep-th/9404141 | Exact Bethe Ansatz solution for $A_{n-1}$ chains with non-$SU_{q}(n)$
invariant open boundary conditions | The Nested Bethe Ansatz is generalized to open and independent boundary
conditions depending on two continuous and two discrete free parameters. This
is used to find the exact eigenvectors and eigenvalues of the $A_{n-1}$ vertex
models and $SU(n)$ spin chains with such boundary conditions. The solution is
found for all... | 1994-04-22 | 2009-10-28 | [
"hep-th"
] | H. J. de Vega and A. Gonz\'alez--Ruiz |
hep-th/9404140 | Extrinsic Curvature Dependence of Nielsen-Olesen Strings | It is shown how to treat the degrees of freedom of Nielsen-Olesen vortices in
the $3+1$-dimensional $U(1)$ higgs model by a collective coordinate method. In
the london limit, where the higgs mass becomes infinite, the gauge and
goldstone degrees of freedom are integrated out, resulting in the vortex
world-sheet action.... | 1994-04-22 | 2009-10-28 | [
"hep-th"
] | Peter Orland |
hep-th/9404136 | QCD on a Tree | A model is proposed which can be regarded as a mean field approximation for
pure lattice QCD and chiral field. It always possesses a phase transition
between a strong coupling phase (where it reduces to a one-plaquette integral)
and a non-trivial weak coupling one. For the U(N) gauge group, it is equivalent
to some mul... | 1994-04-22 | 2015-06-26 | [
"hep-th"
] | D.V.Boulatov |
hep-th/9404137 | The Advantage of a Multi-User Mode | The purpose of this very short note, which maybe considered as a comment on
"hep-th/9401067", is to prove the following proposition. PROPOSITION. There
exist certain models of Mobilevision, in which interpretational figures are
observable only in a multi--user mode in contrast to single--user ones. This
result maybe in... | 1994-04-22 | 2008-02-03 | [
"hep-th",
"adap-org",
"nlin.AO"
] | Denis Juriev (Mathematical Division, Research Institute for System
Studies [Information Technologies], Russian Academy of Sciences, Moscow,
Russia) |
hep-th/9404139 | Models on Event Symmetric Space-Time | In the event symmetric approach to quantum gravity it is assumed that the
fundamental laws of physics must be invariant under exchange of any two
space-time events. The fact that this symmetry if obviously not observed is
attributed to the possibility of a spontaneous symmetry breaking mechanism in
which the residual s... | 1994-04-22 | 2007-05-23 | [
"hep-th"
] | P. E. Gibbs |
hep-th/9404142 | A three parameter invariant of oriented links | This paper defines a new sequence of finite dimensional algebras as quotients
of the group algebras of the braid groups. This sequence depends on three
homogeneous parameters and has a one-parameter family of Markov traces, and so
gives a three parameter invariant of oriented links. | 1994-04-22 | 2008-02-03 | [
"hep-th",
"math.QA"
] | Bruce W. Westbury |
hep-th/9404138 | Connection between Space-Time Supersymmetry and Non-Commutative Geometry | We show that $N=2$ and $N=4$ extended supersymmetric Yang-Mills theories in
four space-time dimensions could be derived as action functionals for
non-commutative spaces. The coupling of $N=1$ and $N=2$ super Yang-Mills to
$N=1$ and $N=2$ matter could be derived as action functionals of
non-commutative spaces only for a... | 1994-04-22 | 2009-10-28 | [
"hep-th"
] | A. H. Chamseddine |
hep-th/9404135 | Black hole entropy and the semiclassical approximation | We compute the entropy of the Hawking radiation for an evaporating black
hole, in 1+1 dimensions and in 3+1 dimensions. We investigate the validity of
the semiclassical approximation for the evaporation process. It appears that
there might be a large entropy of entanglement between the classical degrees of
freedom desc... | 1994-04-21 | 2008-02-03 | [
"hep-th"
] | Samir D. Mathur |
hep-th/9404128 | Dispersion Relations in String Theory | We analyze the analytic continuation of the formally divergent one-loop
amplitude for scattering of the graviton multiplet in the Type II Superstring.
In particular we obtain explicit double and single dispersion relations,
formulas for all the successive branch cuts extending out to plus infinity, as
well as for the d... | 1994-04-21 | 2011-04-20 | [
"hep-th"
] | Eric D'Hoker and D.H. Phong |
hep-th/9404129 | Wigner distribution function and entropy of the damped harmonic
oscillator within the theory of open quantum systems | The harmonic oscillator with dissipation is studied within the framework of
the Lindblad theory for open quantum systems. By using the Wang-Uhlenbeck
method, the Fokker-Planck equation, obtained from the master equation for the
density operator, is solved for the Wigner distribution function, subject to
either the Gaus... | 1994-04-21 | 2007-05-23 | [
"hep-th"
] | Aurelian Isar |
hep-th/9404131 | On N=1 Superconformal Algebra in the Non-Critical Bosonic String Theory | In a recent work it has been shown that the bosonic strings could be embedded
into a special class of $N=1$ fermionic strings. We argue that the
superpartners of any physical state in the spectrum of this fermionic string is
non-physical. So, there is no supersymmetry in the space of physical states and
the embedding i... | 1994-04-21 | 2009-10-28 | [
"hep-th"
] | Pablo M. Llatas and Shibaji Roy |
hep-th/9404134 | Composite leptons and quarks constructed as triply occupied
quasiparticles in quaternionic quanutm mechanics | \noindent We propose a set of rules for constructing composite leptons and
quarks as triply occupied quasiparticles, in the quaternionic quantum mechanics
of a pair of Harari-Shupe preons $T$ and $V$. The composites fall into two
classes, those with totally antisymmetric internal wave functions, and those
with internal... | 1994-04-21 | 2009-10-28 | [
"hep-th",
"hep-ph"
] | S.L. Adler |
hep-th/9404133 | Exact self dual vortices in $d=3$ Majumdar-Papapetrou dilaton gravity | We show that self-dual Nielsen Olesen (NO) vortices in $3$ dimensions give
rise to a class of exact solutions when coupled to Einstein Maxwell Dilaton
gravity obeying the Majumdar-Papapetrou(MP) relation between gravitational and
Maxwell couplings , provided certain Chern-Simons type interactions are
present. The metri... | 1994-04-21 | 2007-05-23 | [
"hep-th"
] | C.S.Aulakh |
hep-th/9404132 | Wess-Zumino-Novikov-Witten Models Based on Lie Superalgebras | The affine current algebra for Lie superalgebras is examined. The bilinear
invariant forms of the Lie superalgebra can be either degenerate or
non-degenerate. We give the conditions for a Virasoro construction, in which
the currents are primary fields of weight one, to exist. In certain cases, the
Virasoro central char... | 1994-04-21 | 2009-10-28 | [
"hep-th"
] | Noureddine Mohammedi |
hep-th/9404130 | Comment on "Equivalence of Several Chern-Simons Matter Models | It is shown that a recent claim of equivalence between three Chern-Simons
theories is not tenable. | 1994-04-21 | 2007-05-23 | [
"hep-th"
] | C.R. Hagen |
hep-th/9404119 | Generalized Schroedinger representation in BRST-quantization | An analysis of the state space in the BRST--quantization in the Schroedinger
representation is performed on the basis of the results obtained earlier in the
framework of the Fock space representation. It is shown that to get
satisfactory results it is necessary to have from the very beginning a
meaningful definition of... | 1994-04-20 | 2009-10-28 | [
"hep-th"
] | Kh. S. Nirov and A. V. Razumov |
hep-th/9404118 | Boundary S-matrix for the Integrable q-Potts Model | The 2D off-critical q-state Potts model with boundaries was studied as a
factorizable relativistic scattering theory. The scattering S-matrices for
particles reflecting off the boundaries were obtained for the cases of
``fixed'' and ``free'' boundary conditions. In the Ising limit, the computed
results agreed with rece... | 1994-04-20 | 2014-11-18 | [
"hep-th"
] | Leung Chim |
hep-th/9404124 | First order Regge calculus | A first order form of Regge calculus is defined in the spirit of Palatini's
action for general relativity. The extra independent variables are the interior
dihedral angles of a simplex, with conjugate variables the areas of the
triangles. There is a discussion of the extent to which these areas can be used
to parameter... | 1994-04-20 | 2010-04-06 | [
"hep-th",
"gr-qc",
"math.QA"
] | John W. Barrett |
hep-th/9404126 | String theory and classical integrable systems | We discuss different formulations and approaches to string theory and $ 2d$
quantum gravity. The generic idea to get a unique description of {\it many}
different string vacua altogether is demonstrated on the examples in $ 2d$
conformal, topological and matrix formulations. The last one naturally brings
us to the appea... | 1994-04-20 | 2009-10-28 | [
"hep-th"
] | A.Marshakov |
hep-th/9404121 | Optics, Mechanics and Quantization of Reparametrization Systems | In this paper we regard the dynamics obtained from Fermat principle as begin
the classical theory of light. We (first-)quantize the action and show how
close we can get to the Maxwell theory. We show that Quantum Geometric Optics
is not a theory of fields in curved space. Considering Classical Mechanics to
be on the sa... | 1994-04-20 | 2009-10-28 | [
"hep-th"
] | M. Navarro, J. Guerrero and V. Aldaya |
hep-th/9404127 | The Quantum Mechanics of a "Spinor-twin" Type II Superparticle | Ten dimensional supersymmetric Yang-Mills theory may be described, in the
light-cone gauge, in terms of either a vector or spinor superfield satisfying
certain projection conditions (type I or II). These have been presented in a $
SO(9,1) $ form, and used to construct spinning superparticle theories in
extended spaces.... | 1994-04-20 | 2007-05-23 | [
"hep-th"
] | J.L. Vazquez-Bello |
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