Pretraga

Pretražite po imenu i prezimenu autora, mentora, urednika, prevoditelja

Napredna pretraga

Pregled bibliografske jedinice broj: 411981

The Solution of the cosmological constant problem from the inhomogeneous equation of state : A Hint from modified gravity?

Štefančić, Hrvoje
The Solution of the cosmological constant problem from the inhomogeneous equation of state : A Hint from modified gravity? // Physics letters. B, 670 (2009), 4-5; 246-253 doi:10.1016/j.physletb.2008.10.065 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 411981 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
The Solution of the cosmological constant problem from the inhomogeneous equation of state : A Hint from modified gravity?

Autori
Štefančić, Hrvoje

Izvornik
Physics letters. B (0370-2693) 670 (2009), 4-5; 246-253

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
cosmological constant ; inhomogeneous equation of state ; modified gravity

Sažetak
The cosmological constant problem is studied in a two component cosmological model. The universe contains a cosmological constant of an arbitrary size and sign and an additional component with an inhomogeneous equation of state. It is shown that, in a proper parameter regime, the expansion of the universe with a large absolute value of the cosmological constant may asymptotically tend to de Sitter space corresponding to a small effective positive cosmological constant. It is argued that such a behavior can be regarded as a solution of the cosmological constant problem in this model. The mechanism behind the relaxation of the cosmological constant is discussed. A connection with modified gravity theories is discussed and an example of a possible realization of the cosmological constant relaxation in f(R) modified gravity is described.

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:

Avatar Url Hrvoje Štefančić (autor)

Poveznice na cjeloviti tekst rada:

doi www.sciencedirect.com doi.org

Citiraj ovu publikaciju:

Štefančić, Hrvoje
The Solution of the cosmological constant problem from the inhomogeneous equation of state : A Hint from modified gravity? // Physics letters. B, 670 (2009), 4-5; 246-253 doi:10.1016/j.physletb.2008.10.065 (međunarodna recenzija, članak, znanstveni)
Štefančić, H. (2009) The Solution of the cosmological constant problem from the inhomogeneous equation of state : A Hint from modified gravity?. Physics letters. B, 670 (4-5), 246-253 doi:10.1016/j.physletb.2008.10.065.
@article{article, author = {\v{S}tefan\v{c}i\'{c}, Hrvoje}, year = {2009}, pages = {246-253}, DOI = {10.1016/j.physletb.2008.10.065}, keywords = {cosmological constant, inhomogeneous equation of state, modified gravity}, journal = {Physics letters. B}, doi = {10.1016/j.physletb.2008.10.065}, volume = {670}, number = {4-5}, issn = {0370-2693}, title = {The Solution of the cosmological constant problem from the inhomogeneous equation of state : A Hint from modified gravity?}, keyword = {cosmological constant, inhomogeneous equation of state, modified gravity} }
@article{article, author = {\v{S}tefan\v{c}i\'{c}, Hrvoje}, year = {2009}, pages = {246-253}, DOI = {10.1016/j.physletb.2008.10.065}, keywords = {cosmological constant, inhomogeneous equation of state, modified gravity}, journal = {Physics letters. B}, doi = {10.1016/j.physletb.2008.10.065}, volume = {670}, number = {4-5}, issn = {0370-2693}, title = {The Solution of the cosmological constant problem from the inhomogeneous equation of state : A Hint from modified gravity?}, keyword = {cosmological constant, inhomogeneous equation of state, modified gravity} }

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

Citati:

    Altmetrijski pokazatelji:


    Podijeli:





    Contrast
    Increase Font
    Decrease Font
    Dyslexic Font
    CROSBI koristi kolačiće (cookies) kako bi poboljšao funkcionalnost stranice.