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

Journal Article · Fri Jul 01 04:00:00 EDT 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.38.593· OSTI ID:6931728

Salerno, M; Samuelsen, M R; Svensmark, H

The effects of thermal fluctuations on solitons and phonons of the sine-Gordon system are investigated in the presence of a ..cap alpha..phi/sub t/-..beta..phi/sub xxt/ 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 ..cap alpha.. and ..beta.. dissipation, and lastly we briefly discuss the extension of the theory to more general dissipative terms.

• Research Organization: Modellering Ikke-Lineaer Dynamik og Irreversibel Termodynamik, The Technical University of Denmark, DK-2800 Lyngby, Denmark
• OSTI ID: 6931728
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 38:1; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
657000 -- Theoretical & Mathematical Physics
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOUNDARY CONDITIONS
ENERGY LOSSES
EQUATIONS
FIELD EQUATIONS
JOSEPHSON JUNCTIONS
JUNCTIONS
LOSSES
NOISE
PHONONS
QUASI PARTICLES
SINE-GORDON EQUATION
SOLITONS
SUPERCONDUCTING JUNCTIONS
TEMPERATURE NOISE