Henri Epstein IHÉS Papers Analyticity properties and thermal effects for general quantum field theory on de Sitter space-time Jacques Bros, Henri Epstein, Ugo Moschella January 29, 1998 Reeh-Schlieder property, Bisognano Wichmann theorem, QFT on curved spacetimes, de Sitter spacetime open access link Commun.Math.Phys. 196 (1998) 535-570