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received from Mon 30 Dec 96 01:00:01 GMT to Tue 31 Dec 96 01:00:01 GMT
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Paper: hep-th/9612248
From: KAL...@hep.Physics.McGill.CA
Date: Sun, 29 Dec 1996 23:29:57 -0500 (EST)
Title: Wavy Strings: Black or Bright?
Authors: Nemanja Kaloper, Robert C. Myers and Harold Roussel
Comments: 45 pages, latex, no figures
Report-no: McGill 96-44/WATPHYS-TH-96/17
\\
Recent developments in string theory have brought forth a considerable
interest in time-dependent hair on extended objects. This novel new hair is
typically characterized by a wave profile along the horizon and angular
momentum quantum numbers $l,m$ in the transverse space. In this work, we
present an extensive treatment of such oscillating black objects, focusing on
their geometric properties. We first give a theorem of purely geometric nature,
stating that such wavy hair cannot be detected by any scalar invariant built
out of the curvature and/or matter fields. However, we show that the tidal
forces detected by an infalling observer diverge at the `horizon' of a black
string superposed with a vibration in any mode with $l \ge 1$. The same
argument applied to longitudinal ($l=0$) waves detects only finite tidal
forces. We also provide an example with a manifestly smooth metric, proving
that at least a certain class of these longitudinal waves have regular
horizons.
\\ (http://xxx.lanl.gov/abs/hep-th/9612248 , 39kb)
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Paper: hep-th/9612249
From: LEE Hyung Won <hw...@physics.inje.ac.kr>
Date: Mon, 30 Dec 1996 14:00:42 +0900 (KST)
Title: D-instanton and D-wormhole
Author: Jin Young kim, H.W. Lee, Y.S. Myung
Comments: 11 pages two PS figures, RevTeX
Report-no: INJE-TP-96-6
\\
We study $p=-1$ D-brane in type IIB superstring theory. In addition to
D-instanton, we obtain the D-wormhole solution in the Einstein frame. This
corresponds to the ten-dimensional singular wormhole solution with infinite
euclidean action.
\\ (http://xxx.lanl.gov/abs/hep-th/9612249 , 9kb)
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Paper: hep-th/9612250
From: Naoki Tanimura <na...@higgs.phys.kyushu-u.ac.jp>
Date: Tue, 31 Dec 1996 04:52:07 +0900
Title: Gauge Independence in terms of the Functional Integral
Authors: T. Kashiwa and N. Tanimura (Kyushu Univ. Fukuoka, Japan)
Comments: 15 pages, 5 figure files, LaTeX
Report-no: KYUSHU-HET-36
\\
Among various approaches in proving gauge independence, models containing an
explicit gauge dependence are convenient. The well-known example is the gauge
parameter in the covariant gauge fixing which is of course most suitable for
the perturbation theory but a negative metric prevents us from imaging a
dynamical picture. Noncovariant gauge such as the Coulomb gauge is on the
contrary used for many physical situations. Therefore it is desirable to
include both cases. More than ten years ago, Steinmann introduced a function
(distribution) which can play this role in his attempt on discussing quantum
electrodynamics (QED) in terms of the gauge invariant fields solely. The method
is, however, broken down in the covariant case: the invariant operators are
ill-defined because of 1/p^2 singularity in the Minkowski space. In this paper,
we apply his function to the path integral: utilizing the arbitrariness of the
function we first restrict it to be able to have a well- defined operator, and
then a Hamiltonian with which we can build up the (Euclidean) path integral
formula. Although the formula is far from covariant, a full covariant
expression is recovered by reviving the components which have been discarded
under the construction of the Hamiltonian. There is no pathological defects
contrary to the operator formalism. With the aid of the path integral formula,
the gauge independence of the free energy as well as the S-matrix is proved.
Moreover the reason is clarified why it is so simple and straightforward to
argue gauge transformations in the path integral. Discussions on the quark
confinement is also presented.
\\ (http://xxx.lanl.gov/abs/hep-th/9612250 , 175kb)
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Paper: hep-th/9612251
From: Dr R Szabo <r.sz...@physics.oxford.ac.uk>
Date: Mon, 30 Dec 1996 21:05:42 GMT
Title: D-brane Configurations and Nicolai Map in Supersymmetric Yang-Mills
Theory
Authors: I.I. Kogan, G.W. Semenoff and R.J. Szabo
Comments: 11 pages LaTeX
Report-no: OUTP-96-74P
\\
We discuss some properties of a supersymmetric matrix model that is the
dimensional reduction of supersymmetric Yang-Mills theory in ten dimensions and
which has been recently argued to represent the short-distance structure of M
theory in the infinite momentum frame. We use T-duality to describe the
relationship between D-brane coordinatizations and gauge fields. We show that
this connection suggests the equivalence between Wilson loop correlators and
string scattering amplitudes. We describe a reduced version of the matrix
quantum mechanics and derive the Nicolai map of the simplified supersymmetric
matrix model. We use this to argue that there are no phase transitions in the
large-N limit, and hence that S-duality is preserved in the full eleven
dimensional theory.
\\ (http://xxx.lanl.gov/abs/hep-th/9612251 , 12kb)
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Paper: hep-th/9612252
From: Kojima Takeo <koj...@kurims.kyoto-u.ac.jp>
Date: Tue, 31 Dec 96 07:17:12 JST
Title: Completely Integrable Equation for the Quantum Correlation Function of
Nonlinear Schr\"odinger Eqaution
Authors: T. Kojima, V.E. Korepin and N.A. Slavnov
Comments: LaTEX file, 23 pages
Report-no: ITP-SB-96-75
\\
Correlation functions of exactly solvable models can be described by
differential equations [Barough E., McCoy B.M. and Wu T.T., Phys. Rev. Lett.
31 (1973) 1409.]. In this paper we show that for non free fermionic case
differential equations should be replaced by integro-differential equations. We
derive an integro-differential equation, which describes time and temperature
dependent correlation function $<\psi(0,0)\psi^\dagger(x,t)>_T$ of
penetrable Bose gas. The integro-differential equation turns out be the
continuum generalization of classical nonlinear Schr\"odinger equation.
\\ (http://xxx.lanl.gov/abs/hep-th/9612252 , 14kb)
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Paper (*cross-listing*): cond-mat/9612033
From: Viktor M Zharkov <zha...@nsipsu.perm.su>
Date: Tue, 3 Dec 96 13:29:18 +0500
Title: New functional representation for Hubbard model, coherent state and
tower of algebras
Authors: V.M. Zharkov
Comments: 5 pages, LaTeX 2.09, A talk given at the 5th International Conference
on the Path Integrals from mev to MeV, PI-96, Dubna, May 27-31,1996, to
appear in the proceedings
Subj-class: Strongly Correlated Electrons
\\
New functional representation for the strongly interacting systems is
proposed which contains a new type of the quantum coherent state. As a result
the new algebraic structure- so called "tower of algebras" appears which gives
the tower (or hierarchy) of models. Generalization of Gutzwiller approximation
in theory of metal-insulator phase transition is obtained. It is shown that the
deformation parameters may be relevant to the order parameters in the physics
of strongly correlated systems.
\\ (http://xxx.lanl.gov/abs/cond-mat/9612033 , 6kb)
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Paper (*cross-listing*): gr-qc/9612060
From: Neil John Cornish <N.J.C...@damtp.cam.ac.uk>
Date: Fri, 20 Dec 1996 15:23:20 GMT
Date (revised): Mon, 30 Dec 1996 13:07:21 GMT
Title: The tale of two centres
Authors: Neil Cornish and Gary Gibbons (DAMTP Cambridge)
Comments: 20 pages, RevTeX, 7 figures included, TeX format changed
Report-no: DAMTP-R96/59
\\
We study motion in the field of two fixed centres described by a family of
Einstein-dilaton-Maxwell theories. Transitions between regular and chaotic
motion are observed as the dilaton coupling is varied.
\\ (http://xxx.lanl.gov/abs/gr-qc/9612060 , 134kb)
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Paper (*cross-listing*): hep-lat/9612022
From: Hildegard Ortmanns <ortm...@theorie.physik.uni-wuppertal.de>
Date: Fri, 20 Dec 1996 10:28:03 +0100
Title: Computer Aided Series Expansions for Critical Phenomena
Authors: Hildegard Meyer-Ortmanns (Theoretical Physics, University of
Wuppertal, Germany) and Thomas Reisz (Theoretical Physics, University of
Heidelberg, Germany)
Comments: Talk presented at the International Conference on Multi-Scale
Phenomena and their Simulation at ZiF (Bielefeld, Germany) October 1996, 8
pages, tex file sendzif.tex and sprocl.sty
Report-no: HD-THEP-96-57 and WUB-96-40
\\
Under quite general conditions critical phenomena can be described with high
order linked cluster expansions. The coefficients of the series admit a
graphical expansion that is generated with the aid of computers. Our
generalization of linked cluster expansions from an infinite to a finite volume
allows to perform a finite size scaling analysis. We also indicate a
generalization to Dynamical Linked Cluster Expansions with possible
applications to spin glasses and neural networks with coupled spin and
interaction dynamics.
\\ (http://xxx.lanl.gov/abs/hep-lat/9612022 , 11kb)
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Paper (*cross-listing*): hep-ph/9612482
From: Tomohiro Matsuda <mat...@kanquro.phys.s.u-tokyo.ac.jp>
Date: Sun, 29 Dec 1996 14:44:12 +0900
Title: Large N expansion in global and local supersymmetric theories
Authors: T.Matsuda
Comments: 62 pages, Latex, 11 figures included
Report-no: UT-765
\\
A systematic study of large N expansion in supersymmetric theories are given.
Supersymmetric O(N) non-linear sigma model in two and three dimensions,
massless and massive supersymmetric QCD with $N_{f}<N_{c}$ and supergravity
models are analyzed in detail.
Our main motivation is to discuss how the previously studied mechanism for
dynamical generation of gaugino condensation and superpotential is realized in
the framework of large N expansion.
\\ (http://xxx.lanl.gov/abs/hep-ph/9612482 , 67kb)
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Paper: hep-th/9612115
replaced with revised version Tue, 31 Dec 1996 01:06:34 +0900
Title: A Large-N Reduced Model as Superstring
Authors: N. Ishibashi, H. Kawai, Y. Kitazawa and A. Tsuchiya
Comments: 29 pages, Latex, a footnote and references added, eq.(3.52)
corrected, minor corrections
Report-no: KEK-TH-503, TIT/HEP-357
\\ (http://xxx.lanl.gov/abs/hep-th/9612115 , 20kb)
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Paper: hep-th/9612222
replaced with revised version Mon, 30 Dec 1996 12:12:06 -0600 (CST)
Title: Strings from IIB Matrices
Author: Miao Li
Comments: 11 pages, harvmac, a number of 2\pi factors are inserted, a reference
is added
Report-no: EFI-96-49
\\ (http://xxx.lanl.gov/abs/hep-th/9612222 , 9kb)
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Paper: hep-th/9612239
replaced with revised version Mon, 30 Dec 96 14:54:00 +0900
Title: Mirror Symmetry and the Web of Landau-Ginzburg String Vacua
Authors: Hitoshi Sato
Comments: Minor corrections, 22 pages, Latex 2.09, no figure
Report-no: OU-HET 255
\\ (http://xxx.lanl.gov/abs/hep-th/9612239 , 16kb)
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Paper: hep-th/9612247
replaced with revised version Mon, 30 Dec 96 13:06:03 -0500
Title: Anomalous Defects and Their Transverse Quantized Conductivities
Author: A.P. Balachandran, V. John, A. Momen and F. Moraes
Comments: 22 pg., REVTEX ( 2 figs.). Title fixed ( no other changes)
Report-no: SU-4240-648
\\ (http://xxx.lanl.gov/abs/hep-th/9612247 , 20kb)
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Report-no: EFI-96-40
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