Dissipative dynamics of a harmonic oscillator: A nonperturbative approach
Data(s) |
01/09/2009
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Resumo |
Starting from a microscopic theory, we derive a master equation for a harmonic oscillator coupled to a bath of noninteracting oscillators. We follow a nonperturbative approach, proposed earlier by us for the free Brownian particle. The diffusion constants are calculated analytically and the positivity of the master equation is shown to hold above a critical temperature. We compare the long time behavior of the average kinetic and potential energies with known thermodynamic results. In the limit of vanishing oscillator frequency of the system, we recover the results of the free Brownian particle. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/24516/1/fulltext.pdf Kumar, Jishad and Sinha, S and Sreeram, PA (2009) Dissipative dynamics of a harmonic oscillator: A nonperturbative approach. In: Physical Review E, 80 (3, Par). 031130-1- 031130-7. |
Publicador |
American Physical Society |
Relação |
http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PLEEE8000080000003031130000001&idtype=cvips&gifs=yes http://eprints.iisc.ernet.in/24516/ |
Palavras-Chave | #Physics |
Tipo |
Journal Article PeerReviewed |