Zero dimensional area law in a gapless fermion system

Details Zero dimensional area law in a gapless fermion system Zero dimensional area law in a gapless fermion system

2007-11-06

arxiv.org/abs/0711.0957v2

Phys. Rev. B 77, 205119 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 11 figures; added 3d computation

Scientific paper

10.1103/PhysRevB.77.205119

The entanglement entropy of a gapless fermion subsystem coupled to a gapless
bulk by a "weak link" is considered. It is demonstrated numerically that each
independent weak link contributes an entropy proportional to lnL, where L is
linear dimension of the subsystem.

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