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arXiv · 0801.0713

Subarea law of entanglement in nodal fermionic systems

Letian Ding·Noah Bray-Ali·Rong Yu·Stephan Haas
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Abstract

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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Letian Ding, Noah Bray-Ali, Rong Yu, Stephan Haas. 2008-09-24. Subarea law of entanglement in nodal fermionic systems. https://doi.org/10.1103/physrevlett.100.215701

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