Equation of state for entanglement in a Fermi gas

Author(s): C. Lunkes, Č. Brukner, V. Vedral

Journal: Physical Review A

Volume: 71

Page(s): 034309

Year: 2005

DOI Number: 10.1103/PhysRevA.71.034309

Link: Link to publication


Entanglement distance is the maximal separation between two entangled electrons in a degenerate electron gas. Beyond that distance, all entanglement disappears. We relate entanglement distance to degeneracy pressure both for extreme relativistic and nonrelativistic systems, and estimate the entanglement distance in a white dwarf. Treating entanglement as a thermodynamical quantity, we relate the entropy of formation and concurrence to relative electron distance, pressure, and temperature, to form an equation of state for entanglement.

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