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CATEGORIES:Theoretical Physics Seminars
SUMMARY:Finite Temperature Properties of Fluctuating Atomi
c (quasi) Condensates - Dr Nikalaous Proukakis\, U
of Newcasstle
DTSTART:20101118T134500Z
DTEND:20101118T150000Z
UID:TALK439AT
URL:/talk/index/439
DESCRIPTION:Ultracold gases are interesting in low dimensional
geometries\, both due to\ntheir potential applica
tions\, and due to the enhancement of the role of\
ncritical fluctuations. Phase and density fluctuat
ions decouple in\nquasi-one-dimensional settings\,
leading to a richer pahse diagram and a\nmore inv
olved theoretical description at intermediate temp
eratures. In\nthis talk\, I will focus mainly on o
ne approach for describing such\nsystems\, known a
s the Stochastic Gross-Pitaevskii equation. At\neq
uilibrium\, the predictions of this theory will be
compared both to a\nnumber of alternative theorie
s and to experiments with\nquasi-one-dimensional w
eakly-interacting gases\, thereby revealing its\np
redictive power. Moreover\, the stochastic nature
of this equation is\nideal for capturing shot-to-s
hot variations seen in experiments\; in\nprobing n
on-equilibrium issues\, a study of dark soliton dy
namics will be\nshown to produce a distribution of
decay times\, and variations between\nindividual
trajectories. Potential limitations of this approa
ch\, and\npossible remedies will also be discussed
.
LOCATION:Theory Library
CONTACT:Dr Dimitri M Gangardt
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