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math.OA2019
On the uniqueness of invariant states
Federico Bambozzi, Simone Murro
Given an abelian group G endowed with a T-pre-symplectic form, we assign to it a symplectic twisted group *-algebra W_G and then we provide criteria for the uniqueness of states in…
math-ph2019★ 14 cited
The Fermionic Signature Operator in De Sitter Spacetime
Claudio Dappiaggi, Felix Finster, Simone Murro +1
The fermionic projector state is a distinguished quasi-free state for the algebra of Dirac fields in a globally hyperbolic spacetime. We construct and analyze it in the four-dimens…