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Title: Tunnel creation of kink-antikink pairs from an inhomogeneous vacuum by an external field

Abstract

The problem of under-barrier creation of kink-antikink pairs by a constant background field is considered within the framework of the one-dimensional sine-Gordon and {phi}{sup 4} models with an inserted periodic lattice of local defects, which renders the true vacuum of the models spatially inhomogeneous. Two types of defects are considered, viz., the ones generating the inhomogeneous vacuum containing dipoles or quadrupoles pinned at sites of the lattice. A specific feature of the pair production in such a system is that one or both members of the pair appear on the mass shell in a state pinned at a site. The energy of a pinned kink is lower than that of a free kink, which results in a substantially shorter under-barrier trajectory and, hence, gives rise to a strong growth of the pair-production rate. In the absence of the background field the dipole inhomogeneous vacuum is double degenerate in its polarization, which gives rise to kinks of the second kind---the ones reversing the polarization. Mass, charge, and an exponent determining the kink-antikink tunnel-creation rate are found for these kinks.

Authors:
 [1];  [2];  [3]
  1. Physico-Technical Department, Kharkov State University, 4 Dzerzhinsky Square, Kharkov, 310077 (Union of Soviet Socialist Republics)
  2. P. P. Shirshov Institute for Oceanology of the U.S.S.R. Academy of Sciences, 23 Krasikov Street, Moscow (Union of Soviet Socialist Republics)
  3. Low Temperatures Physics and Engineering Institute, Academy of Sciences of the Ukrainian Soviet Socialist Republic, 47 Lenin Avenue, Kharkov (Union of Soviet Socialist Republics)
Publication Date:
OSTI Identifier:
6404511
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter; (USA)
Additional Journal Information:
Journal Volume: 42:1; Journal ID: ISSN 0163-1829
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; PHI4-FIELD THEORY; TUNNEL EFFECT; ELECTRIC FIELDS; PAIR PRODUCTION; SINE-GORDON EQUATION; EQUATIONS; FIELD EQUATIONS; FIELD THEORIES; INTERACTIONS; QUANTUM FIELD THEORY; 645400* - High Energy Physics- Field Theory

Citation Formats

Krive, I V, Malomed, B A, and Rozhavsky, A S. Tunnel creation of kink-antikink pairs from an inhomogeneous vacuum by an external field. United States: N. p., 1990. Web. doi:10.1103/PhysRevB.42.273.
Krive, I V, Malomed, B A, & Rozhavsky, A S. Tunnel creation of kink-antikink pairs from an inhomogeneous vacuum by an external field. United States. https://doi.org/10.1103/PhysRevB.42.273
Krive, I V, Malomed, B A, and Rozhavsky, A S. Sun . "Tunnel creation of kink-antikink pairs from an inhomogeneous vacuum by an external field". United States. https://doi.org/10.1103/PhysRevB.42.273.
@article{osti_6404511,
title = {Tunnel creation of kink-antikink pairs from an inhomogeneous vacuum by an external field},
author = {Krive, I V and Malomed, B A and Rozhavsky, A S},
abstractNote = {The problem of under-barrier creation of kink-antikink pairs by a constant background field is considered within the framework of the one-dimensional sine-Gordon and {phi}{sup 4} models with an inserted periodic lattice of local defects, which renders the true vacuum of the models spatially inhomogeneous. Two types of defects are considered, viz., the ones generating the inhomogeneous vacuum containing dipoles or quadrupoles pinned at sites of the lattice. A specific feature of the pair production in such a system is that one or both members of the pair appear on the mass shell in a state pinned at a site. The energy of a pinned kink is lower than that of a free kink, which results in a substantially shorter under-barrier trajectory and, hence, gives rise to a strong growth of the pair-production rate. In the absence of the background field the dipole inhomogeneous vacuum is double degenerate in its polarization, which gives rise to kinks of the second kind---the ones reversing the polarization. Mass, charge, and an exponent determining the kink-antikink tunnel-creation rate are found for these kinks.},
doi = {10.1103/PhysRevB.42.273},
url = {https://www.osti.gov/biblio/6404511}, journal = {Physical Review, B: Condensed Matter; (USA)},
issn = {0163-1829},
number = ,
volume = 42:1,
place = {United States},
year = {1990},
month = {7}
}