Showing 1995Show all

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hep-th1995★ 39 cited

The Vector-Tensor Supermultiplet with Gauged Central Charge

P. Claus, B. de Wit, M. Faux +3

The vector-tensor multiplet is coupled off-shell to an N=2 vector multiplet such that its central charge transformations are realized locally. A gauged central charge is a necessar…

cond-mat1995★ 490 cited

Quantum transport in a multiwalled carbon nanotube

L. Langer, V. Bayot, E. Grivei +6

We report on electrical resistance measurements of an individual carbon nanotube down to a temperature T=20 mK. The conductance exhibits a ln T dependence and saturates at low temp…

hep-th1995★ 24 cited

Special geometry and symplectic transformations

B. de Wit, A. Van Proeyen

Special Kahler manifolds are defined by coupling of vector multiplets to supergravity. The coupling in rigid supersymmetry exhibits similar features. These models contain …

math.CA1995

Compact Jacobi matrices: from Stieltjes to Krein and M(a,b)

Walter Van Assche

In a note at the end of his paper {\it Recherches sur les fractions continues}, Stieltjes gave a necessary and sufficient condition when a continued fraction is represented by a me…

math.CA1995

Upward extension of the Jacobi matrix for orthogonal polynomials

André Ronveaux, Walter Van Assche

Orthogonal polynomials on the real line always satisfy a three-term recurrence relation. The recurrence coefficients determine a tridiagonal semi-infinite matrix (Jacobi matrix) wh…

math.CA1995

Perturbation of orthogonal polynomials on an arc of the unit circle

Leonid B. Golinskii, Paul G. Nevai, Walter Van Assche

Orthogonal polynomials on the unit circle are completely determined by their reflection coefficients through the Szegő recurrences. We assume that the reflection coefficients conve…

q-alg1995

Hopf (Bi-)Modules and Crossed Modules in Braided Monoidal Categories

Yuri Bespalov, Bernhard Drabant

Hopf (bi-)modules and crossed modules over a bialgebra B in a braided monoidal category C are considered. The (braided) monoidal equivalence of both categories is proved provided B…

hep-th1995★ 7 cited

Background charges and consistent continuous deformations of gravity theories

Friedemann Brandt, Walter Troost, Antoine Van Proeyen

We construct and discuss all background charges and continuous consistent deformations of standard gravity theories with scalar matter fields. It turns out that the background…

mtrl-th1995★ 78 cited

Ab initio study of the volume dependence of dynamical and thermodynamical properties of silicon

G. -M. Rignanese, J. -P. Michenaud, X. Gonze

Motivated by the negative thermal expansion observed for silicon between 20 K and 120 K, we present first an ab initio study of the volume dependence of interatomic force constants…

hep-th1995★ 18 cited

The BRST--antibracket cohomology of gravity conformally coupled to scalar matter

Friedemann Brandt, Walter Troost, Antoine Van Proeyen

We compute completely the BRST--antibracket cohomology on local functionals in two-dimensional Weyl invariant gravity for given classical field content (two dimensional metric and…

hep-th1995★ 106 cited

Local BRST cohomology in Einstein--Yang--Mills theory

Glenn Barnich, Friedemann Brandt, Marc Henneaux

We analyse in detail the local BRST cohomology in Einstein-Yang-Mills theory using the antifield formalism. We do not restrict the Lagrangian to be the sum of the standard Hilbert…

hep-th1995★ 32 cited

A Search for Non-Perturbative Dualities of Local Yang--Mills Theories from Calabi--Yau Threefolds

A. Ceresole, M. Billo', R. D'Auria +5

The generalisation of the rigid special geometry of the vector multiplet quantum moduli space to the case of supergravity is discussed through the notion of a dynamical Calabi--Yau…

cond-mat1995★ 21 cited

STRUCTURING THE SET OF INCOMPRESSIBLE QUANTUM HALL FLUIDS

J. Froehlich, T. Kerler, U. M. Studer +1

A classification of incompressible quantum Hall fluids in terms of integral lattices and arithmetical invariants thereof is proposed. This classification enables us to characterize…

hep-th1995

An alternative BRST operator for topological Landau-Ginzburg models

F. De Jonghe, P. Termonia, W. Troost +1

We propose a new BRST operator for the B-twist of Landau-Ginzburg (LG) models. It solves the problem of the fractional ghost numbers of Vafa's old BRST operator and shows how…

hep-th1995★ 8 cited

R-Symmetry and the Topological Twist of N=2 Effective Supergravities of Heterotic Strings

M. Billo', R. D'Auria, S. Ferrara +3

We discuss R-symmetries in locally supersymmetric N=2 gauge theories coupled to hypermultiplets which can be thought of as effective theories of heterotic superstring models. In th…

cond-mat1995

Boundary conditions for quantum lattice systems

M. Fannes, R. F. Werner

For classical lattice systems, the Dobrushin-Lanford-Ruelle theory of boundary conditions states that the restriction of a global equilibrium state to a subsystem can be obtained a…

cond-mat1995★ 29 cited

Quantum spin chains with quantum group symmetry

M. Fannes, B. Nachtergaele, R. F. Werner

We consider actions of quantum groups on lattice spin systems. We show that if an action of a quantum group respects the local structure of a lattice system, it has to be an ordina…

cond-mat1995★ 32 cited

Ergodicity of quantum cellular automata

S. Richter, R. F. Werner

We define a class of dynamical maps on the quasi-local algebra of a quantum spin system, which are quantum analogues of probabilistic cellular automata. We develop criteria for suc…

chao-dyn1995★ 2 cited

The Source of Irreversibility in Macroscopic Dynamics

X de Hemptinne

The dynamics of irreversible relaxation of non-equilibrium macroscopic systems is discussed. Arguments are developed showing that the general process is supported by two independen…

cond-mat1995★ 3 cited

A CLASSIFICATION OF QUANTUM HALL FLUIDS

J. Froehlich, U. M. Studer, E. Thiran

In this paper, the key ideas of characterizing universality classes of dissipation-free (incompressible) quantum Hall fluids by mathematical objects called quantum Hall lattices ar…

hep-th1995★ 11 cited

Pseudo-Duality

C. M. Hull, A. Van Proeyen

Proper symmetries act on fields while pseudo-symmetries act on both fields and coupling constants. We identify the pseudo-duality groups that act as symmetries of the equations of…

hep-th1995★ 297 cited

Duality Transformations in Supersymmetric Yang-Mills Theories coupled to Supergravity,

A. Ceresole, R. D'Auria, S. Ferrara +1

We consider duality transformations in N=2, d=4 Yang--Mills theory coupled to N=2 supergravity. A symplectic and coordinate covariant framework is established, which allows one to…

math.CA1995

Orthogonal polynomials and Laurent polynomials related to the Hahn-Exton q-Bessel function

Erik Koelink, Walter Van Assche

Laurent polynomials related to the Hahn-Exton -Bessel function, which are -analogues of the Lommel polynomials, have been introduced by Koelink and Swarttouw. The explicit st…