期刊
PHYSICAL REVIEW A
卷 91, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.91.012303
关键词
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资金
- ERC [279391 EDEQS]
- ANR [2011-BS04-013-01 WALKMAT, ANR-10-IDEX-0001-02-PSL]
- Indo-French Centre for the Promotion of Advanced Research [4604-3]
We exploit and clarify the use of random matrix theory for the calculation of the entanglement entropy of free Fermi gases. We apply this method to obtain analytic predictions for Renyi entanglement entropies of a one-dimensional gas trapped by a harmonic potential in all the relevant scaling regimes. We confirm our findings with accurate numerical calculations obtained by means of an ingenious discretization of the reduced correlation matrix.
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