Subarea law of entanglement in nodal fermionic systems

Details Subarea law of entanglement in nodal fermionic systems Subarea law of entanglement in nodal fermionic systems

2008-01-04

arxiv.org/abs/0801.0713v2

Phys. Rev. Lett. 100, 215701 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages,4 figures; published version

Scientific paper

10.1103/PhysRevLett.100.215701

We investigate the subarea law scaling properties of the block entropy in bipartite fermionic systems which do not have a finite Fermi surface. It is found that in gapped regimes the leading subarea term is a negative constant, whereas in critical regimes with point nodes the leading subarea law is a logarithmic additive term. At the phase boundary that separates the critical and non-critical regimes, the subarea scaling shows power-law behavior.

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