Entanglement entropy at quantum critical points: Can you ... - INFN
Entanglement entropy at quantum critical points: Can you ... - INFN
Entanglement entropy at quantum critical points: Can you ... - INFN
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If the A and B share a common boundary,<br />
there is a log L term whose coefficient<br />
is determined by the angles <strong>at</strong> the<br />
intersections<br />
B<br />
A<br />
Or if the boundary of A is not smooth,<br />
in which case the coefficient depends on<br />
the angles α i for both regions<br />
(∆S) i = c α i<br />
24π<br />
(<br />
1 −<br />
( π<br />
α i<br />
) 2<br />
)<br />
log L<br />
B<br />
α 2<br />
α 1<br />
A α 3<br />
α 4<br />
Finite terms in the entanglement <strong>entropy</strong> depend on scale-invariant aspect r<strong>at</strong>ios<br />
27
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