Pregled bibliografske jedinice broj: 1013897
Vacuum fluctuations in a supersymmetric model in FRW spacetime
Vacuum fluctuations in a supersymmetric model in FRW spacetime // Physical review. D, Particles, fields, gravitation, and cosmology, 83 (2011), 10; 105003, 10 doi:10.1103/physrevd.83.105003 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 1013897 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Vacuum fluctuations in a supersymmetric model in FRW spacetime
Autori
Bilić, Nevenko
Izvornik
Physical review. D, Particles, fields, gravitation, and cosmology (1550-7998) 83
(2011), 10;
105003, 10
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
vacuum fluctuations ; supersymmetry ; cosmological constant ; dark energy
Sažetak
We study a noninteracting supersymmetric model in an expanding FRW spacetime. A soft supersymmetry breaking induces a nonzero contribution to the vacuum energy density. A short distance cutoff of the order of Planck length provides a scale for the vacuum energy density comparable with the observed cosmological constant. Assuming the presence of a dark energy substance in addition to the vacuum fluctuations of the field, an effective equation of state is derived in a self-consistent approach. The effective equation of state is sensitive to the choice of the cutoff but no fine-tuning is needed.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
POVEZANOST RADA
Projekti:
098-0982930-2864 - Fundamentalne interakcije u fizici elementarnih čestica i kozmologiji (Duplančić, Goran, MZOS ) ( CroRIS)
Ustanove:
Institut "Ruđer Bošković", Zagreb
Profili:
Nevenko Bilić
(autor)
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
