Renormalization-group running of the cosmological constant and the fate of the universe (CROSBI ID 94851)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Guberina, Branko ; Horvat, Raul ; Štefančić, Hrvoje
engleski
Renormalization-group running of the cosmological constant and the fate of the universe
For a generic quantum field theory we study the role played by the renormalization-group (RG) running of the cosmological constant (CC) in determining the ultimate fate of the universe. We consider the running of the CC of generic origin (the vacuum energy of quantum fields and the potential energy of classical fields), with the RG scale proportional to the (total energy density)(1/4) as the most obvious identification. Starting from the present-era values for cosmological parameters we demonstrate how the running can easily provide a negative cosmological constant, thereby changing the fate of the universe, at the same time rendering compatibility with critical string theory. We also briefly discuss the recent past in our scenario.
renormalization group ; cosmological constant ; vacuum energy
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Podaci o izdanju
67 (8)
2003.
083001
9
objavljeno
0556-2821
1089-4918
10.1103/PhysRevD.67.083001