Optimized Degenerate Bose–Fermi Mixture in Microgravity: DSMC Simulation of Sympathetic Cooling

doi:10.1088/0256-307X/31/4/043401

Chin. Phys. Lett.

2014, Vol. 31

Issue (04): 043401 DOI: 10.1088/0256-307X/31/4/043401

ATOMIC AND MOLECULAR PHYSICS

Optimized Degenerate Bose–Fermi Mixture in Microgravity: DSMC Simulation of Sympathetic Cooling

LUAN Tian¹, JIA Tao¹, CHEN Xu-Zong^1**, MA Zhao-Yuan^2**

¹School of Electronics Engineering and Computer Science, Peking University, Beijing 100871
²Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800

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LUAN Tian, JIA Tao, CHEN Xu-Zong et al 2014 Chin. Phys. Lett. 31 043401

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Abstract Applying the direct simulation Monte Carlo (DSMC) method developed for the cold atom system, we explore the possibility of a high-efficiency sympathetic cooling process between ⁸⁷Rb and ⁴⁰K without gravitational force in an optical trap. The relation between the pre-cooling of Bosons and the sympathetic cooling efficiency is also studied. We find that the absence of gravitational force is beneficial to the process of sympathetic cooling. Furthermore, an inefficient pre-cooling process will in fact hamper the creation of Fermi degenerate gases. This suggests the advantages of sympathetic cooling in microgravity.

Received: 19 November 2013 Published: 25 March 2014

PACS:	34.50.-s	(Scattering of atoms and molecules)
	03.75.Ss	(Degenerate Fermi gases)
	05.30.Fk	(Fermion systems and electron gas)

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https://cpl.iphy.ac.cn/10.1088/0256-307X/31/4/043401 OR https://cpl.iphy.ac.cn/Y2014/V31/I04/043401

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	LUAN Tian
	JIA Tao
	CHEN Xu-Zong
	MA Zhao-Yuan

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