Dark Energy – Equation of State| Dark Energy – Equation of State |
In General
> s.a. cosmic topology; cosmological constant.
* Parametrization: Usually parametrized
by a perfect-fluid-type form p = wρ, where a cosmological constant
corresponds to w = −1.
* 2014: The BOSS collaboration analysis,
with complementary cosmological data, yields w = −1.03 ± 0.06.
@ General references:
Kujat et al ApJ(02)ap/01;
Erickson et al PRL(02);
Wasserman PRD(02) [observations and degeneracy];
Dicus & Repko PRD(03)hp/02;
Melchiorri et al PRD(03)ap/02;
Carroll et al PRD(03)ap;
Jiménez NAR(03)ap-in;
Saini et al MNRAS(04)ap/03 [Bayesian analysis];
Garriga et al PRD(04)ht/03 [anthropic selection];
Linder ap/03-conf;
Linder & Miquel PRD(04)ap [dynamical?];
Jain et al NPB(06)ap/04;
Polarski & Ranquet PLB(05)ap;
Cardone et al PRD(06) [beyond perfect fluid];
Barger et al PLB(06) [classification of w(a) models];
Ananda & Bruni PRD(06),
PRD(06) [non-linear];
Solà JPA(08)-a0710 [remnant from inflation];
Usmani et al MNRAS(08)-a0801;
Lee et al MPLA(10)-a0803 [cosmic Hawking radiation];
Barboza & Alcaniz PLB(08)-a0805;
de Putter & Linder JCAP(08)-a0808 [calibration relation];
Sloth IJMPD(10)-a1005-GRF [with ultraviolet cutoff];
Lee ASS(14)-a1105 [parametrization];
de Lavallaz & Fairbairn PRD(11)-a1106 [effect of voids];
Valkenburg et al PDU(13)-a1302 [intrinsic uncertainty on its nature];
Hara et PTEP(14)-a1409 [time variation];
Linder PRD(15)-a1501;
> s.a. Phantom Divide.
@ Parametrizations: Kao gq/03;
Crittenden et al PRL(07)ap;
Johri & Rath IJMPD(07);
> s.a. dark-energy models.
Phenomenological Constraints > s.a. dark energy
and dark matter; expansion [lookback time vs redshift test].
* And matter clustering: If
dark energy is not completely homogeneous then the Poisson equation is modified
and dark-matter clustering is directly affected; Weak lensing and galaxy
redshift surveys can then constrain the sound speed of the dark energy, if the
latter is small; 2015, Constraints from the abundance of voids as a function
of void radius and redshift.
@ General references: Sarkar et al PRL(08) [multiparameter approach];
Sahni et al PRD(08)-a0807 [two diagnostics];
Unnikrishnan PRD(08) [difficult to determine];
Egan & Lineweaver PRD(08) [and cosmic coincidence];
Clarkson & Zunckel PRL(10)-a1002 [direct reconstruction];
Linder a1004-ch;
Sapone et al PRD(10)-a1007 [usefulness of large-scale surveys];
Holsclaw et al PRL(10)
+ news physorg(10)dec,
PRD(10)-a1009 [non-parametric reconstruction];
Vázquez et al JCAP(12)-a1205;
Slepian et al MNRAS(14)-a1301 [upcoming observations];
Said et al PRD(13)-a1303 [new constraints for 0 < z < 2].
@ From cmb: Bean & Melchiorri PRD(02)ap/01;
Krauss ApJ(03)ap,
Bean & Doré PRD(04)ap/03 [WMAP];
Giovi et al PRD(05)ap/04;
Hannestad PRD(05)ap [speed of sound];
Gong & Wang PRD(07)ap/06;
Alam et al JCAP(07)ap/06 [Gold + HST and SNLS data].
@ From supernova surveys: Dicus & Repko PRD(04)ap;
Bento et al PRD(05)ap/04;
Ziaeepour ap/06 [indication that w < −1];
Wood-Vasey et al ApJ(07)ap;
Serra et al MNRAS(07)ap,
Zhao et al PRD(08)-a0712 [preference for cosmological constant];
Salzano et al MPLA(14)-a1211 [test of linearity of equation of state].
@ From galaxy cluster surveys: Angulo et al MNRAS(05)ap [power spectrum];
Khedekar & Majumdar PRD(10) [and SZ effect];
Basilakos et al PRD(10);
Bos et al MG13(15)-a1211 [from the shape of cosmic voids];
Anderson et al (BOSS) MNRAS(14)-a1312 [acoustic oscillations in SDSS-III DR10 and DR11]];
Pavlidou et al JCAP(14)-a1401 [stability of cosmic structures];
> s.a. galaxy distribution.
@ Other data:
Gaztañaga et al PRL(09)-a0808 [radial baryon acoustic oscillations];
Ding & Croft MNRAS(09)-a0903 [future measurements of quasar parallax];
Stern et al JCAP(10)-a0907,
ApJS(10)-a0907 [expansion history from red galaxies];
Enander & Mörtsell PLB(10)-a0910 [accretion onto black holes];
Biswas et al PRD(10)-a1002 [void ellipticity distribution];
Fairbairn a1204 [from gamma rays];
Pen & Zhang PRD(14) [decay];
Hamilton et al Sci(15)aug-a1502 [atom-interferometry constraints];
Escamilla-Rivera & Capozziello a1905 [from cosmography].
@ Combined data:
Wang & Tegmark PRL(04);
Hannestad & Mörtsell JCAP(04)ap;
Doran et al JCAP(05)ap [w < −0.8];
Lazkoz & Majerotto JCAP(07)-a0704 [general relativity favored over brane world];
Zhao & Zhang PRD(10);
Tsujikawa ch(14)-a1004 [rev];
Li & Xia JCAP(10)-a1004;
Pan et al CQG(10)-a1005;
Ilic et al PRD(10);
Holsclaw et al PRD(11)-a1104;
Bonici & Maggiore a1901.
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