82 citations · 287 across the 12 of their papers we have counts for
5 papers · 1 filter
Taming the infrared in de Sitter space: autonomous equations, stochastic approach, and Borel resummation
Alexander Kamenshchik, Polina Petriakova, Tereza Vardanyan
We investigate the divergent perturbative series of correlation functions for a massless, self-interacting scalar field in de Sitter space. First, we use our previously proposed me…
Renormalization group inspired autonomous equations for secular effects in de Sitter space
Alexander Yu. Kamenshchik, Tereza Vardanyan
We develop a method for treating a series of secularly growing terms obtained from quantum perturbative calculations: autonomous first-order differential equations are constructed…
Comment about the vanishing of the vacuum energy in the Wess-Zumino model
Andrei O. Barvinsky, Alexander Yu. Kamenshchik, Tereza Vardanyan
We check the cancellation of the vacuum energy in the Wess-Zumino model at the two-loop order in the component field formalisms with and without auxiliary fields. We show that in b…
Pauli-Zeldovich cancellation of the vacuum energy divergences, auxiliary fields and supersymmetry
A. Yu. Kamenshchik, A. A. Starobinsky, A. Tronconi +2
We have considered the Pauli-Zeldovich mechanism for the cancellation of the ultraviolet divergences in vacuum energy. This mechanism arises because bosons and fermions give contri…
Casimir effect for parallel plates in de Sitter spacetime
E. Elizalde, A. A. Saharian, T. A. Vardanyan
The Wightman function and the vacuum expectation values of the field squared and of the energy-momentum tensor are obtained, for a massive scalar field with an arbitrary curvature…