Thermal sine-Gordon system in the presence of different types of dissipation

M. Salerno, Mogens Rugholm Samuelsen, Henrik Svensmark

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Abstract

The effects of thermal fluctuations on solitons and phonons of the sine-Gordon system are investigated in the presence of a αφt-βφxxt dissipation. The analysis requires the assumption of a more general autocorrelation function for the noise than the one used in previous works. We verify that this leads to the correct results for the average kinetic energies of solitons and phonons in the system. We also evaluate the linewidth for a Josephson oscillator in the presence of both α and β dissipation, and lastly we briefly discuss the extension of the theory to more general dissipative terms.
Original languageEnglish
JournalPhysical Review B
Volume38
Issue number1
Pages (from-to)593-596
ISSN2469-9950
DOIs
Publication statusPublished - 1988

Bibliographical note

Copyright (1988) by the American Physical Society.

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