w and w{sup '} of scalar field models of dark energy
Abstract
Important observables to reveal the nature of dark energy are the equation of state w and its time derivative in units of the Hubble time w{sup '}. Recently, it was shown that the simplest scalar field models of dark energy (quintessence) occupy rather narrow regions in the ww{sup '} plane. We extend the ww{sup '} plane to w<1 and derive bounds on w{sup '} as a function of w for tracker phantom dark energy. We also derive bounds on tracker kessence. The observational window for w{sup '} for w<1 is not narrow, {sigma}(w{sup '}) < or approx. 6(1+w)
 Authors:
 Department of Physics, College of Humanities and Sciences, Nihon University, Tokyo 1568550 (Japan)
 (Japan)
 Publication Date:
 OSTI Identifier:
 20782605
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physical Review. D, Particles Fields; Journal Volume: 73; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevD.73.063501; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COSMOLOGY; EQUATIONS OF STATE; MATHEMATICAL MODELS; NONLUMINOUS MATTER; SCALAR FIELDS
Citation Formats
Chiba, Takeshi, and Division of Theoretical Astronomy, National Astronomical Observatory of Japan, Tokyo 1818588. w and w{sup '} of scalar field models of dark energy. United States: N. p., 2006.
Web. doi:10.1103/PHYSREVD.73.063501.
Chiba, Takeshi, & Division of Theoretical Astronomy, National Astronomical Observatory of Japan, Tokyo 1818588. w and w{sup '} of scalar field models of dark energy. United States. doi:10.1103/PHYSREVD.73.063501.
Chiba, Takeshi, and Division of Theoretical Astronomy, National Astronomical Observatory of Japan, Tokyo 1818588. Wed .
"w and w{sup '} of scalar field models of dark energy". United States.
doi:10.1103/PHYSREVD.73.063501.
@article{osti_20782605,
title = {w and w{sup '} of scalar field models of dark energy},
author = {Chiba, Takeshi and Division of Theoretical Astronomy, National Astronomical Observatory of Japan, Tokyo 1818588},
abstractNote = {Important observables to reveal the nature of dark energy are the equation of state w and its time derivative in units of the Hubble time w{sup '}. Recently, it was shown that the simplest scalar field models of dark energy (quintessence) occupy rather narrow regions in the ww{sup '} plane. We extend the ww{sup '} plane to w<1 and derive bounds on w{sup '} as a function of w for tracker phantom dark energy. We also derive bounds on tracker kessence. The observational window for w{sup '} for w<1 is not narrow, {sigma}(w{sup '}) < or approx. 6(1+w)},
doi = {10.1103/PHYSREVD.73.063501},
journal = {Physical Review. D, Particles Fields},
number = 6,
volume = 73,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}
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