109 citations · 144 across the 6 of their papers we have counts for
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Loops in de Sitter space
Sergio L. Cacciatori, Henri Epstein, Ugo Moschella
We discuss general one and two-loops banana diagrams with arbitrary masses on the de Sitter spacetime by using direct methods of dS quantum field theory in the dimensional regulari…
Loops in Anti de Sitter space
Sergio L. Cacciatori, Henri Epstein, Ugo Moschella
We discuss general one and two-loop banana diagrams and one-loop diagrams with external lines with arbitrary masses on the anti de Sitter spacetime by using methods of AdS quantum…
The massless thermal field and the thermal fermion bosonization in two dimensions
Emil Akhmedov, Henri Epstein, Ugo Moschella
We come back to the issue of bosonization of fermions in two spacetime dimension and give a new costruction in the steady state case where left and right moving particles can coexi…
Trees
Henri Epstein
An algebraic formalism, developped with V. Glaser and R. Stora for the study of the generalized retarded functions of quantum field theory, is used to prove a factorization theorem…
The asymptotic symmetry of de Sitter spacetime
J. Bros, H. Epstein, U. Moschella
We show how to construct a set of Euclidean conformal correlation functions on the boundary of a de Sitter space from an interacting bulk quantum field theory with a certain asympt…