Published January 1984 | Version v1
Journal article Metadata-only

Breather--kink-antikink-pair conversion in the driven sine-Gordon system

Creators

  • 1. Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545

Description

Breather excitations in the sine-Gordon equation influenced by constant driving forces are investigated: large driving forces cause the breather to split into a kk-bar (2π kink--2π antikink) pair while for small driving forces the breather excitations enter stationary modes. A perturbation method and a potential-energy argument yields expressions for the threshold for breather decomposition. Good agreement between theory and numerical results is found when the initial phase (theta) of the breather is either 0 or π. For thetaapprox. =π/2 and thetaapprox. =3π/2 the deviation gets larger

Additional details

Publishing Information

Journal Title
Phys. Rev., A
Journal Volume
29
Journal Issue
1
Series
Phys. Rev., A.
Journal Page Range
350-354
ISSN
0556-2791

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
15050401
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
BOUND STATE; DISTURBANCES; EXCITATION; FREQUENCY ANALYSIS; SINE-GORDON EQUATION; SOLITONS
Descriptors DEC
ENERGY-LEVEL TRANSITIONS; EQUATIONS; FIELD EQUATIONS; QUASI PARTICLES