Phase diffusion of Bose-Einstein Condensation close to zero temperature
Hongwei Xiong, Shujuan Liu, Guoxiang Huang
TL;DR
This paper investigates the phase diffusion in Bose-Einstein condensates near zero temperature by calculating quantum fluctuation correlations, revealing that phase diffusion times are longer than previously estimated.
Contribution
It provides a detailed calculation of quantum fluctuation correlations affecting phase diffusion, improving understanding of condensate stability near absolute zero.
Findings
Phase diffusion time is significantly longer than previous estimates.
Quantum fluctuation correlations are crucial for accurate phase diffusion modeling.
Results enhance understanding of condensate coherence near zero temperature.
Abstract
The correlation function of the quantum fluctuations due to collective excitations is calculated and used to investigate the phase diffusion of a Bose-Einstein condensate close to zero temperature. It is shown that the phase diffusion time of the condensate is much longer than the result obtained by assuming that the correlation time of the quantum fluctuations is infinity.
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