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Euclidean Quantum Gravity

- G. Esposito, A. Kamenshchik, G. Pollifrone
- Physics
- 1997

This chapter studies the linearized gravitational field in the presence of boundaries. For this purpose, zeta-function regularization is used to perform the mode-by-mode evaluation of Faddeev-Popov… Expand

CAN THE CHAPLYGIN GAS BE A PLAUSIBLE MODEL FOR DARK ENERGY

- V. Gorini, A. Kamenshchik, U. Moschella
- Physics
- 19 September 2002

In this note two cosmological models representing the flat Friedmann Universe filled with a Chaplygin fluid, with or without dust, are analyzed in terms of the recently proposed "statefinder"… Expand

Selection rules for the Wheeler-DeWitt equation in quantum cosmology

- A. Barvinsky, A. Kamenshchik
- Physics
- 11 December 2013

The incompleteness of the Dirac quantization scheme leads to a redundant set of solutions of the Wheeler-DeWitt equation for the wave function in the superspace of quantum cosmology. The selection of… Expand

Cosmological landscape from nothing: some like it hot

- A. Barvinsky, A. Kamenshchik
- Physics
- 1 September 2006

We suggest a novel picture of the quantum Universe—its creation is described through the density matrix defined by the Euclidean path integral. This yields an ensemble of universes—a cosmological… Expand

Pauli–Zeldovich cancellation of the vacuum energy divergences, auxiliary fields and supersymmetry

- A. Kamenshchik, A. Starobinsky, A. Tronconi, T. Vardanyan, G. Venturi
- Physics
- 25 January 2018

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 contributions of the… Expand

Euclidean Quantum Gravity on Manifolds with Boundary

- G. Esposito, A. Kamenshchik, G. Pollifrone
- Physics
- 31 March 1997

Part I General formalism: the role of boundaries in modern physics Schwinger-De Witt asymptotic expansion effective action in quantum field theory covariant quantization of gauge theories the… Expand

Higgs boson, renormalization group, and cosmology

- A. Barvinsky, A. Kamenshchik, C. Kiefer, A. Starobinsky, C. Steinwachs
- Physics
- 6 October 2009

We consider the renormalization group improvement in the theory of the Standard Model (SM) Higgs boson playing the role of an inflaton with a strong non-minimal coupling to gravity. It suggests the… Expand

Asymptotic freedom in inflationary cosmology with a non-minimally coupled Higgs field

- A. Barvinsky, A. Kamenshchik, C. Kiefer, A. Starobinsky, C. Steinwachs
- Physics
- 10 April 2009

We consider the renormalization group improvement in the theory of the Standard Model Higgs boson playing the role of an inflaton with a strong non-minimal coupling to gravity. It suggests the range… Expand

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