Subarea law of entanglement in nodal fermionic systems |
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Authors: | Ding Letian Bray-Ali Noah Yu Rong Haas Stephan |
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Institution: | Department of Physics and Astronomy, University of Southern California, Los Angeles, California 90089, USA. |
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Abstract: | We investigate the subarea-law scaling behavior 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 noncritical regimes, the subarea scaling shows power-law behavior. |
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