43 citations · 77 across the 4 of their papers we have counts for
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hep-th2008★ 2 cited
Density matrix of the Universe reloaded: origin of inflation and cosmological acceleration
A. O. Barvinsky, C. Deffayet, A. Yu. Kamenshchik
We present an overview of a recently suggested new model of quantum initial conditions for the Universe in the form of a cosmological density matrix. This density matrix originally…
hep-th2007★ 43 cited
Why there is something rather than nothing (out of everything)?
A. O. Barvinsky
The path integral over Euclidean geometries for the recently suggested density matrix of the Universe is shown to describe a microcanonical ensemble in quantum cosmology. This ense…
hep-th2007★ 32 cited
Cosmological Landscape and Euclidean Quantum Gravity
A O Barvinsky, A Yu Kamenshchik
Quantum creation of the universe is described by the {\em density matrix} defined by the Euclidean path integral. This yields an ensemble of universes -- a cosmological landscape -…