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math-ph2023★ 5 cited
The Fermionic Entanglement Entropy and Area Law for the Relativistic Dirac Vacuum State
Felix Finster, Magdalena Lottner, Alexander V. Sobolev
We consider the fermionic entanglement entropy for the free Dirac field in a bounded spatial region of Minkowski spacetime. In order to make the system ultraviolet finite, a regula…
math-ph2023★ 3 cited
The Fermionic Entanglement Entropy of the Vacuum State of a Schwarzschild Black Hole Horizon
Felix Finster, Magdalena Lottner
We define and analyze the fermionic entanglement entropy of a Schwarzschild black hole horizon for the regularized vacuum state of an observer at infinity. Using separation of vari…