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received from Fri 17 Jan 97 01:00:01 GMT to Mon 20 Jan 97 01:00:01 GMT
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Paper: hep-th/9701082
From: David Wands <wa...@sms.port.ac.uk>
Date: Fri, 17 Jan 1997 02:56:56 MST

Title: Vacuum fluctuations in axion-dilaton cosmologies
Authors: E. J. Copeland, Richard Easther and David Wands
Comments: LaTeX, 23 pages plus 6 figures
Report-no: SUSSEX-TH-97-001, PU-RCG-97/01
\\
We study axion-dilaton cosmologies derived from the low-energy string
effective action. We present the classical homogeneous
Friedmann-Robertson-Walker solutions and derive the semi-classical perturbation
spectra in the dilaton, axion and moduli fields in the pre-Big Bang scenario.
By constructing the unique S-duality invariant field perturbations for the
axion and dilaton fields we derive S-duality invariant solutions, valid when
the axion field is time-dependent as well as in a dilaton-vacuum cosmology.
Whereas the dilaton and moduli fields have steep blue perturbation spectra
(with spectral index n=4) we find that the axion spectrum depends upon the
expansion rate of the internal dimensions (0.54<n<4) which allows
scale-invariant (n=1) spectra. We note that for n<1 the metric is non-singular
in the conformal frame in which the axion is minimally coupled.
\\ (http://xxx.lanl.gov/abs/hep-th/9701082 , 58kb)
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Paper: hep-th/9701083
From: Manu Mathur <ma...@hpth.difi.unipi.it>
Date: Fri, 17 Jan 97 16:04:26 MET

Title: Magnetic Monopoles, Gauge Invariant Dynamical Variables and Georgi
Glashow Model
Authors: Adriano Di Giacomo and Manu Mathur
Comments: 9 pages, Latex
Report-no: IFUP-TH 75/96
\\
We investigate Georgi-Glashow model in terms of a set of explicitly SO(3)
gauge invariant dynamical variables. In the new description a novel compact
abelian gauge invariance emerges naturally. As a consequence magnetic monopoles
occur as point like "defects" in space time. Their non-perturbative
contribution to the partition function is explicitly included. This procedure
corresponds to dynamical "abelian projection" without gauge fixing. In the
Higgs phase the above abelian invariance is to be identified with
electromagnetism. We also study the effect of $\theta$ term in the above
abelian theory.
\\ (http://xxx.lanl.gov/abs/hep-th/9701083 , 9kb)
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Paper: hep-th/9701084
From: mar...@phy.hr
Date: Fri, 17 Jan 97 13:41:12 +0100

Title: Parastatistics as Examples of the Extended Haldane Statistics
Authors: Stjepan Meljanac (IRB,Zagreb) and Marijan Milekovic (PMF,Zagreb)
Comments: Latex, 13 pages, no figures,to appear in Mod.Phys.Lett.A
\\
We show that for every algebra of creation and annihilation operators with a
Fock-like representation,one can define extended Haldane statistical parameters
in a unique way. Specially for parastatistics, we calculate extended Haldane
parameters and discuss the corresponding partition functions.
\\ (http://xxx.lanl.gov/abs/hep-th/9701084 , 8kb)
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Paper: hep-th/9701085
From: K.E....@sussex.ac.uk (Kerstin Kunze)
Date: Fri, 17 Jan 1997 12:58:59 +0000 (GMT)

Title: Inhomogeneous String Cosmologies
Authors: John D. Barrow, Kerstin E. Kunze
Comments: 25 pages, Latex
Report-no: SUSSEX-AST 97/1-2
\\
We present exact inhomogeneous and anisotropic cosmological solutions of
low-energy string theory containing dilaton and axion fields. The spacetime
metric possesses cylindrical symmetry. The solutions describe ever-expanding
universes with an initial curvature singularity and contain known homogeneous
solutions as subcases. The asymptotic form of the solution near the initial
singularity has a spatially-varying Kasner-like form. The inhomogeneous axion
and dilaton fields are found to evolve quasi-homogeneously on scales larger
than the particle horizon. When the inhomogeneities enter the horizon they
oscillate as non-linear waves and the inhomogeneities attentuate. When the
inhomogeneities are small they behave like small perturbations of homogeneous
universes. The manifestation of duality and the asymptotic behaviour of the
solutions are investigated.
\\ (http://xxx.lanl.gov/abs/hep-th/9701085 , 17kb)
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Paper: hep-th/9701086
From: Ian Aitchison <i.aitc...@physics.oxford.ac.uk>
Date: Fri, 17 Jan 1997 15:44:42 GMT

Title: The SU(2) instanton and the adiabatic evolution of two Kramers doublets
Authors: M.T. Johnsson and I.J.R. Aitchison
Comments: 14 pages Latex,no figures
Report-no: OUTP-97-03P
\\
The adiabatic evolution of two doubly-degenerate (Kramers) levels is
considered. The general five-parameter Hamiltonian describing the system is
obtained and shown to be equivalent to one used in the $\Gamma_8
\otimes(\tau_2\oplus\epsilon)$ Jahn-Teller system. It is shown explicitly that
the resulting SU(2) non-Abelian geometric vector potential is that of the
(SO(5) symmetric) SU(2) instanton. Various forms of the potentials are
discussed.
\\ (http://xxx.lanl.gov/abs/hep-th/9701086 , 9kb)
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Paper: hep-th/9701087
From: Dr N Mavromatos <n.mavr...@physics.oxford.ac.uk>
Date: Fri, 17 Jan 1997 19:46:38 GMT

Title: Inverse Landau-Khalatnikov Transformation and Infrared Critical
Exponents of (2+1)-dimensional Quantum Electrodynamics
Authors: I.J.R. Aitchison, N.E. Mavromatos, D. Mc Neill
Comments: 13 pages LATEX, 1 Figure (included automatically)
Report-no: OUTP-96-76-P
\\
By applying an inverse Landau-Khalatnikov transformation, connecting
(resummed) Schwinger-Dyson treatments in non-local and Landau gauges of
$QED_3$, we derive the infrared behaviour of the wave-function renormalization
in the Landau gauge, and the associated critical exponents in the normal phase
of the theory (no mass generation). The result agrees with the one conjectured
in earlier treatments. The analysis involves an approximation, namely an
expansion of the non-local gauge in powers of momenta in the infrared. This
approximation is tested by reproducing the critical number of flavours
necessary for dynamical mass generation in the chiral-symmetry-broken phase of
$QED_3$.
\\ (http://xxx.lanl.gov/abs/hep-th/9701087 , 38kb)
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Paper: hep-th/9701088
From: "Kellogg S. Stelle" <k.st...@ic.ac.uk>
Date: Sat, 18 Jan 1997 16:05:18 +0000

Title: Lectures on Supergravity p-branes
Author: K.S. Stelle (Imperial College, London)
Comments: 53 pages, 4 Postscript figures, Latex, uses sprocl.sty and epsf.sty
Report-no: Imperial/TP/96-97/15
\\
We review the properties of classical p-brane solutions to supergravity
theories, i.e. solutions that may be interpreted as Poincare-invariant
hyperplanes in spacetime. Topics covered include the distinction between
elementary/electric and solitonic/magnetic solutions, examples of singularity
and global structure, relations between mass densities, charge densities and
the preservation of unbroken supersymmetry, diagonal and vertical Kaluza-Klein
reduction families, Scherk-Schwarz reduction and domain walls, and the
classification of multiplicities using duality symmetries.
\\ (http://xxx.lanl.gov/abs/hep-th/9701088 , 59kb)
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Paper: hep-th/9701089
From: Paul Ohara <bih...@uxa.ecn.bgu.edu>
Date: Sat, 18 Jan 1997 15:59:29 -0600 (CST)

Title: Bell's inequality, the Pauli exclusion principle and baryonic structure
Authors: Paul O'Hara (Northeastern Illinois University)
Comments: 8 pages LATEX, includes an eps file
Report-no: 97-0118
\\
Bell's inequality has been traditionally used to explore the relationship
between hidden variables and the Copenhagen interpretation of quantum
mechanics. In this paper, another use is found. Bell's inequality is used to
derive a coupling principle for elementary particles and to give a deeper
understanding of baryonic structure. We also give a derivation of the Pauli
exclusion principle from the coupling principle. Pacs: 14.20-c, 12.90+b,
3.65.Bz, 12.40.Ee
\\ (http://xxx.lanl.gov/abs/hep-th/9701089 , 9kb)
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Paper: hep-th/9701090
From: "Douglas A. Singleton" <da...@erwin.phys.virginia.edu>
Date: Sat, 18 Jan 1997 17:13:12 -0500

Title: Restrictions on Magnetic Charge from Quantized Angular Momentum
Author: Douglas Singleton
Comments: 9 pages ReVTeX
\\
Using the result that an electric charge - magnetic charge system carries an
internal field angular momentum of $e g / 4 \pi$ we arrive at two restrictions
on magnetic monopoles via the requirement of angular momentum quantization
and/or conservation. First we show that magnetic charge should scale in the
opposite way from electric charge. Second we show that free, unconfined
monopoles seem to be inconsistent when one considers a magnetic charge in the
vicinity of more than one electric charge.
\\ (http://xxx.lanl.gov/abs/hep-th/9701090 , 7kb)
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Paper: hep-th/9701091
From: "Mikhail S. Plyushchay" <plus...@mx.ihep.su>
Date: Sun, 19 Jan 1997 13:03:56 GMT+03:00

Title: Deformed Heisenberg algebra with reflection
Author: Mikhail Plyushchay
Comments: 16 pages, LaTeX, to appear in Nucl. Phys. B
Report-no: NF/DF-05/96
\\
A universality of deformed Heisenberg algebra involving the reflection
operator is revealed. It is shown that in addition to the well-known
infinite-dimensional representations related to parabosons, the algebra has
also finite-dimensional representations of the parafermionic nature. We
demonstrate that finite-dimensional representations are representations of
deformed parafermionic algebra with internal Z_2-grading structure. On the
other hand, any finite- or infinite-dimensional representation of the algebra
supply us with irreducible representation of osp(1|2) superalgebra. We show
that the normalized form of deformed Heisenberg algebra with reflection has the
structure of guon algebra related to the generalized statistics.
\\ (http://xxx.lanl.gov/abs/hep-th/9701091 , 15kb)
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Paper: hep-th/9701092
From: nas...@arevol.mian.su (Volovich Anastasia)
Date: Fri, 17 Jan 97 20:03:39 +0300 (MSK)

Title: Composite p-branes in various dimensions
Authors: I.Ya.Arefeva, K.S.Viswanathan, A.I.Volovich and I.V.Volovich
Comments: 17 pages, no figures, latex. Contribution to the Proceedings of the
30th Ahrenshoop Symposium on the Theory of Elementary Particles, edited by D.
Lust, H.-J. Otto and G. Weigt, to appear in Nuclear Physics B, Proceedings
Supplement
Report-no: SMI-26-96, AIV-3-96
\\
We review an algebraic method of finding the composite p-brane solutions for
a generic Lagrangian, in arbitrary spacetime dimension, describing an
interaction of a graviton, a dilaton and one or two antisymmetric tensors. We
set the Fock--De Donder harmonic gauge for the metric and the "no-force"
condition for the matter fields. Then equations for the antisymmetric field are
reduced to the Laplace equation and the equation of motion for the dilaton and
the Einstein equations for the metric are reduced to an algebraic equation.
Solutions composed of n constituent p-branes with n independent harmonic
functions are given. The form of the solutions demonstrates the harmonic
functions superposition rule in diverse dimensions. Relations with known
solutions in D=10 and D=11 dimensions are discussed.
\\ (http://xxx.lanl.gov/abs/hep-th/9701092 , 11kb)
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Paper: hep-th/9701093
From: Michael Gutperle <m.gut...@damtp.cam.ac.uk>
Date: Sun, 19 Jan 1997 17:54:37 MST

Title: Effects of D-instantons
Authors: Michael B.Green (DAMTP, Cambridge, U.K.) and Michael Gutperle (DAMTP,
Cambridge, U.K)
Comments: 27 pages, 6 figures, Latex
Report-no: Damtp-96-104
\\
Scattering of fundamental states of type IIB supergravity and superstring
theory is discussed at low orders in perturbation theory in the background of a
D-instanton. The integration over fermionic zero modes in both the low energy
supergravity and in the string theory leads to explicit nonperturbative terms
in the effective action. These include a single instanton correction to the
known tree-level and one-loop $R^4$ interactions. The `spectrum' of
multiply-charged D-instantons is deduced by T-duality in nine dimensions from
multiply-wound world-lines of marginally-bound D-particles. This, and other
clues, lead to a conjectured SL(2,Z) completion of the $R^4$ terms which
suggests that they are not renormalized by perturbative corrections in the
zero-instanton sector beyond one loop. The string theory unit-charged
D-instanton gives rise to point-like effects in fixed-angle scattering, raising
unresolved issues concerning distance scales in superstring theory.
\\ (http://xxx.lanl.gov/abs/hep-th/9701093 , 53kb)
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Paper (*cross-listing*): chao-dyn/9701005
From: kan...@alon.cc.biu.ac.il
Date: Sun, 5 Jan 1997 15:27:03 +0200 (WET)

Title: Universality in invariant random-matrix models: Existence near the soft
edge
Authors: E. Kanzieper and V. Freilikher
Comments: 4 pages (revtex), to appear in Physical Review E
Subj-class: Chaotic Dynamics; Statistical Mechanics
\\
We consider two non-Gaussian ensembles of large Hermitian random matrices
with strong level confinement and show that near the soft edge of the spectrum
both scaled density of states and eigenvalue correlations follow so-called Airy
laws inherent in Gaussian unitary ensemble. This suggests that the invariant
one-matrix models should display universal eigenvalue correlations in the
soft-edge scaling limit.
\\ (http://xxx.lanl.gov/abs/chao-dyn/9701005 , 6kb)
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Paper (*cross-listing*): chao-dyn/9701006
From: kan...@alon.cc.biu.ac.il
Date: Sun, 5 Jan 1997 15:51:00 +0200 (WET)

Title: Novel universal correlations in invariant random-matrix models
Authors: E. Kanzieper and V. Freilikher
Comments: 4 pages (revtex)
Subj-class: Chaotic Dynamics; Statistical Mechanics
\\
We show that eigenvalue correlations in unitary-invariant ensembles of large
random matrices adhere to novel universal laws that only depend on a
multicriticality of the bulk density of states near the soft edge of the
spectrum. Our consideration is based on the previously unknown observation that
genuine density of states and n-point correlation function are completely
determined by the Dyson's density analytically continued onto the whole real
axis.
\\ (http://xxx.lanl.gov/abs/chao-dyn/9701006 , 8kb)
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Paper (*cross-listing*): solv-int/9701004
From: V Kuznetsov <va...@amsta.leeds.ac.uk>
Date: Fri, 10 Jan 1997 13:59:29 +0000 (GMT)

Title: Separation of variables for the Ruijsenaars system
Authors: V.B. Kuznetsov, F.W. Nijhoff and E.K. Sklyanin
Comments: 26 pages, LaTex, no figures
Report-no: CNLS-Leeds preprint, 10 January 1997
\\
We construct a separation of variables for the classical n-particle
Ruijsenaars system (the relativistic analog of the elliptic Calogero-Moser
system). The separated coordinates appear as the poles of the properly
normalised eigenvector (Baker-Akhiezer function) of the corresponding Lax
matrix. Two different normalisations of the BA functions are analysed. The
canonicity of the separated variables is verified with the use of r-matrix
technique. The explicit expressions for the generating function of the
separating canonical transform are given in the simplest cases n=2 and n=3.
Taking nonrelativistic limit we also construct a separation of variables for
the elliptic Calogero-Moser system.
\\ (http://xxx.lanl.gov/abs/solv-int/9701004 , 21kb)
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Paper (*cross-listing*): solv-int/9701005
From: manuel <man...@dromos.fis.ucm.es>
Date: Fri, 10 Jan 1997 16:13:46 +0001

Title: Crum Transformations and Wronskian Type Solutions for Supersymmetric KdV
equation
Author: Q. P. Liu, M. Manas
Comments: 13 pp, AMS-LaTeX
\\
Darboux transformation is reconsidered for the supersymmetric KdV system. By
iterating the Darboux transformation, a supersymmetric extension of the Crum
transformation is obtained for the Manin-Radul SKdV equation, in doing so one
gets Wronskian superdeterminant representations for the solutions. Particular
examples provide us explicit supersymmetric extensions, super solitons, of the
standard soliton of the KdV equation. The KdV soliton appears as the body of
the super soliton.
\\ (http://xxx.lanl.gov/abs/solv-int/9701005 , 10kb)
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Paper (*cross-listing*): solv-int/9701006
From: Luiz Agostinho Ferreira <l...@axp.ift.unesp.br>
Date: Fri, 10 Jan 1997 14:04:43 MST
Date (revised): Fri, 17 Jan 1997 06:32:09 MST

Title: Aspects of Solitons in Affine Integrable Hierarchies
Authors: Luiz A. Ferreira and Joaquin Sanchez Guillen
Comments: 39 pages, LaTeX, Two talks presented by the authors at the
``International Workshop on Selected Topics of Theoretical and Modern
Mathematical Physics - SIMI/96'', Tbilisi, Georgia, September/96; Some
misprints corrected in this replaced version
Report-no: US-FT/49-96, IFT-P.005/97
\\
We argue that one of the basic ingredients for the appearance of soliton
solutions in integrable hierarchies, is the existence of ``vacuum solutions''
corresponding to Lax operators lying in some abelian subalgebra of the
associated affine Kac-Moody algebra. Using the dressing transformation we
construct the solutions in the orbit of those vacuum solutions, and conjecture
that the solitons correspond to some special points in those orbits. The
generalized tau-function for those hierarchies are defined for integrable
highest weight representations. It applies for any level of the representation.
We illustrate our methods with the recently proposed non abelian Toda models
coupled to matter fields. A very special class of such theories possess a U(1)
Noether charge that is proportional to a topological charge. That leads to a
mechanism that confines the matter fields inside the solitons.
\\ (http://xxx.lanl.gov/abs/solv-int/9701006 , 32kb)
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Paper (*cross-listing*): solv-int/9701007
From: manuel <man...@dromos.fis.ucm.es>
Date: Fri, 10 Jan 1997 17:12:06 +0001

Title: Darboux Transformation for the Manin-Radul Supersymmetric KdV equation
Author: Q. P. Liu, M. Manas
Comments: 14 pp, 2 figures, AMS-LaTeX, to appear in Phys. Lett. B
\\
In this paper we present a vectorial Darboux transformation, in terms of
ordinary determinants, for the supersymmetric extension of the Korteweg-de
Vries equation proposed by Manin and Radul. It is shown how this transformation
reduces to the Korteweg-de Vries equation. Soliton type solutions are
constructed by dressing the vacuum and we present some relevant plots.
\\ (http://xxx.lanl.gov/abs/solv-int/9701007 , 77kb)
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Paper (*cross-listing*): solv-int/9701009
From: va...@amsta.leeds.ac.uk (V Kuznetsov)
Date: Tue, 14 Jan 1997 15:29:46 +0000 (GMT)

Title: Separation of variables for the Dn type periodic Toda lattice
Authors: Vadim B. Kuznetsov
Comments: 15 pages, LaTex, no figures
Report-no: preprint, University of Leeds, October 1996
\\
We prove separation of variables for the most general (Dn type) periodic Toda
lattice with 2x2 Lax matrix. It is achieved by finding proper normalisation for
the corresponding Baker-Akhiezer function. Separation of variables for all
other periodic Toda lattices associated with infinite series of root systems
follows by taking appropriate limits.
\\ (http://xxx.lanl.gov/abs/solv-int/9701009 , 13kb)
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Paper: hep-th/9401007
replaced with revised version Sat, 18 Jan 1997 16:53:05 +0000

Title: The Multivalued Free-Field Maps of Liouville and Toda Gravities
Authors: A. Anderson, B.E.W. Nilsson, C.N. Pope and K.S. Stelle
Comments: 47 pages, plain Tex, 5 Postscript figures, uses epsf.tex. Repackaging
to permit Postscript generation, no changes to paper
Report-no: CTP TAMU-1/94, Goteborg ITP 94-3, Imperial/TP/93-94/13
Journal-ref: Nucl. Phys. B430 (1994) 107
\\ (http://xxx.lanl.gov/abs/hep-th/9401007 , 64kb)
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Paper: hep-th/9505108
replaced with revised version Sat, 18 Jan 1997 13:56:06 -0500

Title: Wavefunctions for Non-Abelian Vortices
Authors: Kai-Ming Lee and Hoi-Kwong Lo
Comments: Reference added
Report-no: IASSNS-HEP-95/34 ; OUTP-95-20P
\\ (http://xxx.lanl.gov/abs/hep-th/9505108 , 8kb)
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Paper: hep-th/9611173
replaced with revised version Sat, 18 Jan 97 17:11:55 GMT

Title: Super D-branes
Authors: E. Bergshoeff and P.K. Townsend
Comments: 27pp. Typos corrected. To appear in Nucl. Phys. B
Report-no: DAMTP-R/96/53, UG-8/96
\\ (http://xxx.lanl.gov/abs/hep-th/9611173 , 15kb)
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Paper: hep-th/9611236
replaced with revised version Mon, 20 Jan 1997 03:09:12 +0530 (GMT+05:30)

Title: A Unified Treatment of the Characters of SU(2) and SU(1,1)
Authors: Subrata Bal, K. V. Shajesh, Debabrata Basu
Comments: 31 pages, RevTeX, typos corrected. To be published in Journal of
Mathematical Physics
\\ (http://xxx.lanl.gov/abs/hep-th/9611236 , 14kb)
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Paper: hep-th/9701010
replaced with revised version Fri, 17 Jan 1997 20:19:07 -0400 (GMT-0400)

Title: Duality on Higher Order U(1) Bundles
Authors: M. I. Caicedo, I. Martin and A. Restuccia
Comments: 25 pages, latex, one figure. References and comment added
Report-no: USB-Dec-1996
\\ (http://xxx.lanl.gov/abs/hep-th/9701010 , 17kb)
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Paper: hep-th/9701023
replaced with revised version Sun, 19 Jan 1997 17:53:48 -0600 (CST)

Title: Calabi-Yau fourfolds for M- and F-Theory compactifications
Authors: A. Klemm, B. Lian, S.-S. Roan and S.-T. Yau
Comments: 61 pages harvmac, one figure blow.eps, model 16 in tab 6.1 corrected
and other minor corrections, references added
Report-no: EFI-97-01
\\ (http://xxx.lanl.gov/abs/hep-th/9701023 , 65kb)
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Paper (*cross-listing*): alg-geom/9607015
replaced with revised version Fri, 17 Jan 97 12:20:20 +0100

Title: Master Spaces for stable pairs
Authors: Christian Okonek, Alexander Schmitt and Andrei Teleman
Notes: 26 pages. New introduction and applications LaTeX2e
\\ (alg-geom/9607015 , 27kb)
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Paper (*cross-listing*): gr-qc/9701009
replaced with revised version Fri, 17 Jan 1997 14:53:51 +0530

Title: Geodesic Deviation of Photons in Einstein and Higher Derivative Gravity
Authors: Subhendra Mohanty and A.R. Prasanna
Comments: LaTeX file, 13 pages. Reference added, typos and an arithmetic factor
corrected. Results unchanged. Significance of strong energy condtion pointed
out
Report-no: PRL-TH-97/01
\\ (http://xxx.lanl.gov/abs/gr-qc/9701009 , 8kb)
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Paper (*cross-listing*): quant-ph/9608014
replaced with revised version Sat, 18 Jan 1997 10:07:47 -0600

Title: Corrected Born-Infeld theory of electroweak and gravitational fields
Authors: Dmitriy Palatnik
Comments: 10 pages, LaTeX, minor corrections
Report-no: SMG-96-8
\\ (http://xxx.lanl.gov/abs/quant-ph/9608014 , 9kb)
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