LANL Abstract: Exploring the Expansion History of the Universe

From: Amara Graps (amara@amara.com)
Date: Fri Aug 30 2002 - 05:58:50 MDT


This is actually readable. :-)

Amara

http://xxx.lanl.gov/abs/astro-ph/0208512

Astrophysics, abstract
astro-ph/0208512

From: Eric Linder <evlinder@lbl.gov>
Date: Wed, 28 Aug 2002 23:21:10 GMT (23kb)

Exploring the Expansion History of the Universe

Authors: Eric V. Linder (LBL)
Comments: 4 pages, 3 figures, submitted to Phys. Rev. Letters

Exploring the recent expansion history of the universe promises
insights into the cosmological model, the nature of dark energy, and
potentially clues to high energy physics theories and gravitation.
We examine the extent to which precision distance-redshift
observations can map out the history, including the
acceleration-deceleration transition, and the components and
equations of state of the energy density. We consider the ability to
distinguish between various dynamical scalar field models for the
dark energy, as well as higher dimension and alternate gravity
theories. Finally, we present a new, advantageous parametrization
for the study of dark energy.

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