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Euclidean Quantum Gravity
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
CAN THE CHAPLYGIN GAS BE A PLAUSIBLE MODEL FOR DARK ENERGY
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"
Selection rules for the Wheeler-DeWitt equation in quantum cosmology
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
Cosmological landscape from nothing: some like it hot
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
Pauli–Zeldovich cancellation of the vacuum energy divergences, auxiliary fields and supersymmetry
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
Euclidean Quantum Gravity on Manifolds with Boundary
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
Higgs boson, renormalization group, and cosmology
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
Asymptotic freedom in inflationary cosmology with a non-minimally coupled Higgs field
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
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