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Proton decay in de Sitter environment
G. E. Volovik
The decay of proton in the de Sitter environment is governed by the temperature , where is the Hubble parameter. This temperature is twice larger than the Gibbons-Hawkin…
Thermodynamics of Einstein static Universe with boundary
G. E. Volovik
The de Sitter state and the static Einstein Universe are unique states that have a constant scalar Ricci curvature . It was shown earlier that such a unique symmetry of t…
From Landau two-fluid model to de Sitter Universe
G. E. Volovik
The condensed matter analogs are useful for consideration of the phenomena related to the quantum vacuum. This is because in condensed matter we know physics both in the infrared a…
Schwinger vs Unruh
G. E. Volovik
It is shown that the temperatures which characterise the Unruh effect, the Gibbons-Hawking radiation from the de Sitter cosmological horizon and the Hawking radiation from the blac…
Tsallis-Cirto entropy of black hole and black hole atom
G. E. Volovik
The quantum tunneling processes related to the black hole determine the black hole thermodynamics. The Hawking temperature is determined by the quantum tunneling processes of radia…
Discrete symmetry in quantum gravity
G. E. Volovik
We consider the discrete symmetry , which takes place in the scenario of quantum gravity where the gravitational tetrads emerge as the order parameter. Under…