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On a garvitational cutoff for the vacuum energy

Domenii publicaţii > Fizica + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Hristu Culetu

Editorial: Braz. Jour. Phys., 2B, p.562 - 565, 2006.

Rezumat:

A possible connection between the energy W of the vacuum fluctuations of quantum fields and gravity in „empty space” is conjectured in this paper using a natural cutoff of high momenta with the help of the gravitational radius associated to the vacuum region considered. Below some critical length $L = 1 mm$ the pressure is one third of the energy density but above $1 mm$ the equation of state corresponds to the dark energy one. When the Newton constant tends to zero, W becomes infinite, as it should be.

Cuvinte cheie: energia de vid, entropia gaurii negre, raza gravitationala // vacuum energy, black hole entropy, gravitational radius