Solution of the fermionic entanglement problem with interface defects

Details Solution of the fermionic entanglement problem with interface defects Solution of the fermionic entanglement problem with interface defects

2010-05-12

arxiv.org/abs/1005.2144v3

Ann. Phys. (Berlin) 522, 679 (2010)

Physics

Condensed Matter

Statistical Mechanics

15 pages, 6 figures, changed title and minor modifications in published version

Scientific paper

10.1002/andp.201000055

We study the ground-state entanglement of two halves of a critical transverse
Ising chain, separated by an interface defect. From the relation to a
two-dimensional Ising model with a defect line we obtain an exact expression
for the continuously varying effective central charge. The result is relevant
also for other fermionic chains.

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