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Pregled bibliografske jedinice broj: 425470

Časopis

Autori: Nojiri Shin'ichi; Odintsov, Seregei D.; Štefančić, Hrvoje
Naslov: Transition from a matter-dominated era to a dark energy universe
Izvornik: Physical Review D - Particles, Fields, Gravitation, and Cosmology (1550-7998) 74 (2006), 8; 086009-1-086009-9
Vrsta rada: članak
Ključne riječi: equation-of-state; scalar-tensor; phantom cosmology; model; fluid; acceleration; potentials; inflation; phase
Sažetak:
We develop a general program of the unification of a matter-dominated era with an acceleration epoch for scalar-tensor theory or a dark fluid. The general reconstruction of the scalar-tensor theory is fulfilled. The explicit form of the scalar potential for which the theory admits a matter-dominated era, a transition to an acceleration, and an (asymptotically de Sitter) acceleration epoch consistent with Wilkinson Microwave Anisotropy Probe data is found. The interrelation of the epochs of deceleration-acceleration transition and matter dominance-dark energy transition for dark fluids with a general equation of state (EOS) is investigated. We give several examples of such models with explicit EOS (using redshift parametrization) where matter-dark energy domination transition may precede the deceleration-acceleration transition. As a by-product, the reconstruction scheme is applied to scalar-tensor theory to define the scalar potentials which may produce the dark matter effect. The obtained modification of Newton potential may explain the rotation curves of galaxies.
Projekt / tema: 0098002
Izvorni jezik: ENG
Rad je indeksiran u
bazama podataka:
Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Kategorija: Znanstveni
Znanstvena područja:
Fizika
Broj citata:
Altmetric:
DOI: 0.1103/PhysRevD.74.086009
URL cjelovitog teksta:
Google Scholar: Transition from a matter-dominated era to a dark energy universe
Upisao u CROSBI: shrvoje@irb.hr (shrvoje@irb.hr), 28. Kol. 2009. u 15:23 sati



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