Statistical Difference in the Normal Phase of the Dipolar Ultracold Gases at Finite Temperatures
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概要
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We study the equilibrium properties of dipolar Bose and Fermi gases at finite temperatures. We have recently developed a variational ansatz for the phase-space distribution function of a dipolar Fermi gas at finite temperatures. We extend the variational formalism to a Bose gas and discuss the effect of dipolar interactions with different statistics on thermal equilibrium, with particular emphasis on deformation in momentum space. We examine the stability of the system by varying the temperature, trap aspect ratio, and dipole moment. In addition, we discuss how deformation in both real and momentum spaces can be observed in the high-temperature regime, which is relevant for the current experiments at JILA [Ni et al.: Science 322 (2008) 231] and at the University of Tokyo [Aikawa et al.: New J. Phys. 11 (2009) 055035].
- 2011-04-15
著者
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Endo Yuki
Department Of Cardiovascular Surgery Yamato Seiwa Hospital
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Nikuni Tetsuro
Department Of Physics Faculty Of Science Tokyo University Of Science
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Endo Yuki
Department of Physics, Faculty of Science, Tokyo University of Science, Shinjuku, Tokyo 162-8601, Japan
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Miyakawa Takahiko
Faculty of Education, Aichi University of Education, Kariya, Aichi 448-8542, Japan
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Nikuni Tetsuro
Department of Physics, Faculty of Science, Tokyo University of Science, Shinjuku, Tokyo 162-8601, Japan
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