期刊
PHYSICAL REVIEW LETTERS
卷 113, 期 21, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.210402
关键词
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资金
- CONICET [PIP 0662]
- ANPCyT [PICT 2010-1907]
- UNLP, Argentina [PID X497]
- National Science Council of Taiwan
- National Center for Theoretical Sciences (NCTS) of Taiwan
- National Tsing Hua University
We study the effect of suddenly turning on a long-range interaction in a spinless Fermi gas in two dimensions. The short- to intermediate-time dynamics is described using the method of bosonization of the Fermi surface. The space-time dependence of the nonequilibrium fermion density matrix as well as the evolution after the quench of the discontinuity at the Fermi momentum of the momentum distribution are computed. We find that the asymptotic state predicted by bosonization is consistent with the existence of a prethermalization plateau, which is also predicted by a perturbative approach in terms of the fermionic degrees of freedom. The bosonized representation, however, explicitly allows for the construction of the generalized Gibbs ensemble describing the prethermalized state.
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