NDLI: Fermi super-Tonks-Girardeau state for attractive Fermi gases in an optical lattice

Content Provider	Springer Nature Link
Author	Wang, L. Xu, Z. H. Chen, S.
Copyright Year	2012
Abstract	We demonstrate that a kind of highly excited state of strongly attractive Hubbard model, named of Fermi super-Tonks-Girardeau state, can be realized in the spin-1/2 Fermi optical lattice system by a sudden switch of interaction from the strongly repulsive regime to the strongly attractive regime. In contrast to the ground state of the attractive Hubbard model, such a state is the lowest scattering state with no pairing between attractive fermions. With the aid of Bethe-ansatz method, we calculate energies of both the Fermi Tonks-Girardeau gas and the Fermi super-Tonks-Girardeau state of spin-1/2 ultracold fermions and show that both energies approach to the same limit as the strength of the interaction goes to infinity. By exactly solving the quench dynamics of the Hubbard model, we demonstrate that the Fermi super-Tonks-Girardeau state can be transferred from the initial repulsive ground state very efficiently. This allows the experimental study of properties of Fermi super-Tonks-Girardeau gas in optical lattices.
Starting Page	1
Ending Page	6
Page Count	6
File Format	PDF
ISSN	14346060
Journal	The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics
Volume Number	66
Issue Number	10
e-ISSN	14346079
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-10-18
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cold Matter and Quantum Gas Physical Chemistry Spectroscopy/Spectrometry Quantum Physics Quantum Information Technology, Spintronics Nonlinear Dynamics Atomic, Molecular, Optical and Plasma Physics
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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