Mechanism of Anomalous Tunneling in Condensed Bose System(Condensed matter: structure and mechanical and thermal properties)
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概要
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We clarify the origin of anomalous tunneling [Kagan et al. : Phys. Rev. Lett. 90 (2003) 130402] i.e., the perfect transmission at low energy limit of tunneling of phonon excitations across the potential barrier separating two Bose condensates. The perfect transmission is a consequence of the coincidence of the wave function of the excited state at low energy limit and the macroscopic wave function of the condensate. We show that the perfect transmission at low energy occurs even at finite temperatures within the scheme of Popov approximation.
- 社団法人日本物理学会の論文
- 2008-01-15
著者
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Nishiwaki Hiroshi
Department Of Basic Science University Of Tokyo
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Kato Yusuke
Department Of Applied Biological Chemistry Graduate School Of Agricultural And Life Sciences Univers
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FUJITA Akitake
Department of Physics, University of Tokyo
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Fujita Akitake
Department Of Physics University Of Tokyo
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