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- W2023937098 abstract "The entanglement entropy of a distinguished region of a quantum many-body system reflects the entanglement in its pure ground state. Here we establish scaling laws for this entanglement in critical quasifree fermionic and bosonic lattice systems, without resorting to numerical means. We consider the setting of $D$-dimensional half-spaces which allows us to exploit a connection to the one-dimensional case. Intriguingly, we find a difference in the scaling properties depending on whether the system is bosonic---where an area law is proven to hold---or fermionic where we determine a logarithmic correction to the area law, which depends on the topology of the Fermi surface. We find Lifshitz quantum phase transitions accompanied with a nonanalyticity in the prefactor of the leading order term." @default.
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- W2023937098 date "2007-05-31" @default.
- W2023937098 modified "2023-10-05" @default.
- W2023937098 title "Statistics Dependence of the Entanglement Entropy" @default.
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- W2023937098 doi "https://doi.org/10.1103/physrevlett.98.220603" @default.
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