RSS icon
Twitter icon
Facebook icon
Vimeo icon
YouTube icon

Non-Equilibrium description of ultra-cold Bose gases: beyond the mean field

September 30, 2013 -
11:00am to 12:30pm
Speaker: 
Rob Ballagh
Institution: 
University of Otago

Abstract 

We have developed a methodology, based on the truncated Wigner approximation, that treats effects arising from quantum and thermal fluctuations in trapped ultra-cold bosons. This talk presents an overview of our ‘c-field’ method, and its application to a range of equilibrium and dynamical phenomena. We show how a condensate can be identified in non-equilibrium systems, and present quantitative calculations of the thermodynamic properties and correlations of the accompanying thermal cloud. We discuss the description of vortex dynamics and formation, including the results of recent experiments. A critical comparison is made between c-field and symmetry-breaking methods.

CSS 2400
College Park, MD 20742

Subscribe to A Quantum Bit 

Quantum physics began with revolutionary discoveries in the early twentieth century and continues to be central in today’s physics research. Learn about quantum physics, bit by bit. From definitions to the latest research, this is your portal. Subscribe to receive regular emails from the quantum world. Previous Issues...

Sign Up Now

Sign up to receive A Quantum Bit in your email!

 Have an idea for A Quantum Bit? Submit your suggestions to jqi-comm@umd.edu