TY - JOUR
T1 - Stochastic gross-pitaevskii equation for the dynamical thermalization of Bose-Einstein condensates
AU - Savenko, I. G.
AU - Liew, T. C.H.
AU - Shelykh, I. A.
PY - 2013/3/18
Y1 - 2013/3/18
N2 - We present a theory for the description of energy relaxation in a nonequilibrium condensate of bosonic particles. The approach is based on coupling to a thermal bath of other particles (e.g., phonons in a crystal, or noncondensed atoms in a cold atom system), which are treated with a Monte Carlo type approach. Together with a full account of particle-particle interactions, dynamic driving, and particle loss, this offers a complete description of recent experiments in which Bose-Einstein condensates are seen to relax their energy as they propagate in real space and time. As an example, we apply the theory to the solid-state system of microcavity exciton polaritons, in which nonequilibrium effects are particularly prominent.
AB - We present a theory for the description of energy relaxation in a nonequilibrium condensate of bosonic particles. The approach is based on coupling to a thermal bath of other particles (e.g., phonons in a crystal, or noncondensed atoms in a cold atom system), which are treated with a Monte Carlo type approach. Together with a full account of particle-particle interactions, dynamic driving, and particle loss, this offers a complete description of recent experiments in which Bose-Einstein condensates are seen to relax their energy as they propagate in real space and time. As an example, we apply the theory to the solid-state system of microcavity exciton polaritons, in which nonequilibrium effects are particularly prominent.
UR - http://www.scopus.com/inward/record.url?scp=84875270907&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.110.127402
DO - 10.1103/PhysRevLett.110.127402
M3 - 文章
AN - SCOPUS:84875270907
SN - 0031-9007
VL - 110
JO - Physical Review Letters
JF - Physical Review Letters
IS - 12
M1 - 127402
ER -