Josephson oscillation of a superfluid Fermi gas

被引：19

作者：

Adhikari, S. K. ^{[1
]}

机构：

[1] Univ Estadual Paulista, Inst Fis Teor, BR-01405900 Sao Paulo, Brazil

来源：

EUROPEAN PHYSICAL JOURNAL D | 2008年 / 47卷 / 03期

关键词：

D O I：

10.1140/epjd/e2008-00044-0

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Using the complete numerical solution of a time-dependent three-dimensional rnean-field model we study the Josephson oscillation of a superfluid Fermi gas (SFG) at zero temperature formed in a combined axially-symmetric harmonic plus one-dimensional periodic optical-lattice (OL) potentials after displacing the harmonic trap along the axial OL axis. We study the dependence of Josephson frequency on the strength of the OL potential. The Josephson frequency decreases with increasing strength as found in the experiment of Cataliotti et al. [Science 293, 843 (2001)] for a Bose-Einstein condensate and of the experiment of Pezze et al. [Phys. Rev. Lett. 93, 120401 (2004)] for an ideal Fermi gas. We demonstrate a breakdown of Josephson oscillation in the SFG for a large displacement of the harmonic trap. These features of Josephson oscillation of a SFG can be tested experimentally.

引用

页码：413 / 419

页数：7

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