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hep-th1993★ 21 cited

Regge Regime in QCD and Asymmetric Lattice Gauge Theory

I. Ya. Aref'eva

We study the Regge regime of QCD as a special regime of lattice gauge theory on an asymmetric lattice. This lattice has a spacing in the longitudinal direction and a spacing…

gr-qc1993★ 33 cited

Tunnelling geometries I. Analyticity, unitarity and instantons in quantum cosmology

A. O. Barvinsky, A. Yu. Kamenshchik

We present a theory of tunnelling geometries originating from the no-boundary quantum state of Hartle and Hawking. We reformulate the no-boundary wavefunction in the representation…

cond-mat1993★ 87 cited

A Simple Formula for the Persistent Current in Disordered 1D Rings: Parity and Interaction Effects

Alexander O. Gogolin, Nikolai V. Prokof'ev

The general expression for the persistent current of 1D noninteracting electrons in a disorder potential with smooth scattering data is derived for zero temperature. On the basis o…

cond-mat1993★ 13 cited

Chaotic Cascades with Kolmogorov 1941 Scaling

L. Biferale, M. Blank, U. Frisch

We define a (chaotic) deterministic variant of random multiplicative cascade models of turbulence. It preserves the hierarchical tree structure, thanks to the addition of infinites…

hep-th1993★ 18 cited

The MFF Singular Vectors in Topological Conformal Theories

A. M. Semikhatov

It is argued that singular vectors of the topological conformal (twisted ) algebra are identical with singular vectors of the Kac--Moody algebra. An arbitrary matter t…

hep-th1993★ 42 cited

Multi-String Solutions by Soliton Methods in De Sitter Spacetime

F. Combes, H. J. de Vega, A. V. Mikhailov +1

{\bf Exact} solutions of the string equations of motion and constraints are {\bf systematically} constructed in de Sitter spacetime using the dressing method of soliton theory. The…

hep-ph1993★ 14 cited

Instanton-Like Transitions at High Energies in (1+1) Dimensional Scalar Models

D. T. Son, V. A. Rubakov

Instanton-like transitions (``shadow processes'') are considered in (1+1) dimensional models with one scalar field whose potential is a quadratic well with a cliff. The correspondi…

hep-ph1993★ 18 cited

Flavour Singlet Corrections to the Partial Decay Rate

K. G. Chetyrkin, A. Kwiatkowski

We analytically compute the flavour singlet radiative corrections to the partial decay rate . These corrections arise from a…

hep-ph1993★ 5 cited

Examples of Semiclassical Instanton-Like Scattering: Massless and SU(2) Gauge Theories

D. T. Son, P. G. Tinyakov

Two-parameter sets of solutions to the classical field equations in the massless model and SU(2) gauge theory are found, each solution presumably describing a multi-particle…

hep-lat1993★ 18 cited

Manifestly Gauge Invariant Models of Chiral Lattice Fermions

A. A. Slavnov

A manifestly gauge invariant lattice action for nonanomalous chiral models is proposed which leads in the continuum limit to the theory free of doublers.

chao-dyn1993★ 11 cited

On Spectral Laws of 2D--Turbulence in Shell Models

Peter Frick, Erik Aurell

We consider a class of shell models of 2D-turbulence. They conserve inertially the analogues of energy and enstrophy, two quadratic forms in the shell amplitudes. Inertially conser…

hep-ph1993★ 15 cited

Tree amplitudes at multiparticle threshold in a model with softly broken symmetry

M. V. Libanov, V. A. Rubakov, S. V. Troitsky

Tree amplitudes of the production of two kinds of scalar particles at threshold from one virtual particle are calculated in a model of two scalar fields with symmetric quart…

chao-dyn1993★ 13 cited

Self-Preservation of Large-Scale Structures in Burgers' Turbulence

Erik Aurell, Sergey N. Gurbatov, Igor I. Wertgeim

We investigate the stability of large-scale structures in Burgers' equation under the perturbation of high wave-number noise in the initial conditions. Analytical estimates are obt…

hep-th1993★ 3 cited

Uniqueness of as a quantum gauge group and representations of its differential algebra

I. Ya. Aref'eva, G. E. Arutyunov

To construct a quantum group gauge theory one needs an algebra which is invariant under gauge transformations. The existence of this invariant algebra is closely related with the e…

hep-th1993★ 15 cited

Large N QCD at High Energies as Two-Dimensional Field Theory

I. Ya. Aref'eva

Different aspects of the Verlinde and Verlinde relation between high-energy effective scattering in QCD and a two-dimensional sigma-model are discussed. Starting from a lattice ver…

hep-th1993

Representations of the compact quantum group and geometrical quantization

G. E. Arutyunov

The method of geometrical quantization of symplectic manifolds is applied to constructing infinite dimensional irreducible unitary representations of the algebra of functions on th…

cond-mat1993★ 2 cited

The Superfluidity and Experimental Properties of Odd-Energy-Gap Superconductors

M. Dobroliubov, E. Langmann, P. C. E. Stamp

We consider the experimental properties of superconductors with a gap which is an odd function of energy $\bepsk=\epsk - μ$, i.e.\ , a gap which vanishes everywhere on the Fermi su…

hep-ph1993★ 14 cited

Decay Rate of a Positronium. Review of Theory and Experiment

Valeri V. Dvoeglazov, Rudolf N. Faustov, Yuri N. Tyukhtyaev

The present status of theoretical and experimental investigations of the decay rate of a positronium is considered. The increasing interest to this problem has been caused by the d…

cond-mat1993★ 14 cited

Closed Abrikosov Vortices in a Superconducting Cylinder

V. A. Kozlov, A. V. Samokhvalov

The new type of solutions of the London equation for type-II superconductors is obtained to describe the ring-shaped (toroidal) Abrikosov vortices. The specific feature of these so…

hep-th1993★ 12 cited

Affine Strings

I. V. Volovich

A new model of bosonic strings is considered. An action of the model is the sum of the standard string action and a term describing an interaction of a metric with a linear (affine…

hep-lat1993★ 10 cited

Numerical Study of Periodic Instanton Configurations in Two-dimensional Abelian Higgs Theory

Victor V. Matveev

Numerical minimization of the Euclidean action of the two-dimensional Abelian Higgs model is used to construct periodic instantons, the euclidean field configurations with two turn…

chao-dyn1993★ 188 cited

Steady-State Electrical Conduction in the Periodic Lorentz Gas

N. I. Chernov, G. L. Eyink, J. L. Lebowitz +1

We study nonequilibrium steady states in the Lorentz gas of periodic scatterers when an external field is applied and the particle kinetic energy is held fixed by a ``thermostat''…

gr-qc1993★ 127 cited

The renormalization group for non-renormalizable theories: Einstein gravity with a scalar field

A. O. Barvinsky, A. Yu. Kamenshchik, I. P. Karmazin

We develop a renormalization-group formalism for non-renormalizable theories and apply it to Einstein gravity theory coupled to a scalar field with the Lagrangian $L=\sqrt{g} [R U(…

hep-th1993★ 2 cited

Large-N Quenching in the Kazakov-Migdal Model

I. Ya. Aref'eva

To study the behavior of the Kazakov-Migdal at large N the quenched momentum prescription with constraints for treating the large N limit of gauge theories is used. It is noted tha…