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Krein Spaces in de Sitter Quantum Theories
de Sitter group undecomposable representations Krein spaces Gupta–Bleuler triplet cohomology of representations
2010/3/19
Experimental evidences and theoretical motivations lead to consider the curved space-time relativity based on the de Sitter group $SO_0(1,4)$ or $Sp(2,2)$ as an appealing substitute to the flat space-...
Casimir Effect for Differential Forms in Real Compact Hyperbolic Spaces
Casimir Effect Differential Forms Real Compact Hyperbolic Spaces
2010/10/18
We calculate the Casimir energy associated with abelian gauge fields in real compact hyperbolic spaces. The cosmological applications of the vacuum energies are briefly considered.