Description of Bose–Einstein condensate of cold gas in interaction through virtual states of non-condensate atomic components

Sergiu Bazgan, Luca Pezze, Augusto Smerzi and Nicolae A. Enaki

Physica A: Statistical Mechanics and its Applications, 2018, vol. 503, issue C, 190-199

Abstract: We study the nonlinear interaction between two species of Bose gases having a large mass imbalance. It is presented the situation, when at low temperature, one of gas component, with smallest mass, is Bose–Einstein condensed, while the other gas is not. We show that the new interaction Hamiltonian with temperature dependent potential part takes into account all binary exchange energy between the atoms of the smallest mass component through the virtual states of non-condensate components. The modification of the traditional phase transition representation of the number of atoms in the condensate as a function of the temperature is described by an anomaly in the low temperature branch of this dependence. This anomaly have the tendency of the increasing of the numbers of atoms in condensate with increasing of temperature for a small value of the relative parameter T∕Tc, where Tc is the critical temperature of the phase transition.

Keywords: 03.75.fi Phase coherent atomic ensembles; Quantum condensation phenomena; 05.30.jp Boson systems; 67.40.kh Thermodynamic properties (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378437118302772
Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:503:y:2018:i:c:p:190-199

DOI: 10.1016/j.physa.2018.02.184

Access Statistics for this article

Physica A: Statistical Mechanics and its Applications is currently edited by K. A. Dawson, J. O. Indekeu, H.E. Stanley and C. Tsallis

More articles in Physica A: Statistical Mechanics and its Applications from Elsevier
Bibliographic data for series maintained by Catherine Liu ().