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Finite-temperature models of Bose–Einstein condensation

The theoretical description of trapped weakly interacting Bose–Einstein condensates is characterized by a large number of seemingly very different approaches which have been developed over the course…
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Quantum Gases: Finite Temperature and Non-Equilibrium Dynamics

Unprecedented developments in experimental design and precision control have led to quantum gases becoming the preferred playground for designer quantum many-body systems.This self-contained volume…
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Universal Themes of Bose-Einstein Condensation

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Finite-temperature vortex dynamics in Bose-Einstein condensates

We study the decay of vortices in Bose-Einstein condensates at finite temperatures by means of the Zaremba Nikuni Griffin formalism, in which the condensate is modelled by a Gross Pitaevskiiequation,…
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Low dimensional Bose gases

We present an improved many-body T-matrix theory for partially Bose-Einstein condensed atomic gases by treating the phase fluctuations exactly. The resulting mean-field theory is valid in arbitrary…
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Gapless mean-field theory of Bose-Einstein condensates

We present a topical review of the development of finite-temperature field theories of Bose-Einstein condensation in weakly interacting atomic gases. We highlight the difficulties in obtaining a…
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Creation and characterization of vortex clusters in atomic Bose-Einstein condensates

We show that a moving obstacle, in the form of an elongated paddle, can create vortices that are dispersed, or induce clusters of like-signed vortices in 2D Bose-Einstein condensates. We propose new…
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Comparison of gapless mean field theories for trapped Bose-Einstein condensates

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Dynamical Critical Exponents in Driven-Dissipative Quantum Systems.

It is shown that polaritons are characterized by the dynamical critical exponent z≈2 with topological defects playing a fundamental role in the dynamics, giving logarithmic corrections both to the power-law decay of the number of vortices and to the associated growth of the characteristic length scale.
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Vortex reconnections in atomic condensates at finite temperature

The study of vortex reconnections is an essential ingredient of understanding superfluid turbulence, a phenomenon recently also reported in trapped atomic Bose-Einstein condensates. In this work we…
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