Journal
PHYSICAL REVIEW B
Volume 77, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.77.205119
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The entanglement entropy of a gapless fermion subsystem coupled to a gapless bulk by a weak link is considered. It is numerically demonstrated that each independent weak link contributes an entropy proportional to ln L, where L is linear dimension of the subsystem.
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