On A Cosmological Invariant as an Observational Probe in the Early Universe

Details On A Cosmological Invariant as an Observational Probe in the Early Universe On A Cosmological Invariant as an Observational Probe in the Early Universe

2010-10-26

arxiv.org/abs/1010.5355v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

4 pages, Revtex

Scientific paper

k-essence scalar field models are usually taken to have lagrangians of the form ${\mathcal L}=-V(\phi)F(X)$ with $F$ some general function of $X=\nabla_{\mu}\phi\nabla^{\mu}\phi$. Under certain conditions this lagrangian in the context of the early universe can take the form of that of an oscillator with time dependent frequency. The Ermakov invariant for a time dependent oscillator in a cosmological scenario then leads to an invariant quadratic form involving the Hubble parameter and the logarithm of the scale factor. In principle, this invariant can lead to further observational probes for the early universe. Moreover, if such an invariant can be observationally verified then the presence of dark energy will also be indirectly confirmed.

Affiliated with

Also associated with

No associations

Rating

On A Cosmological Invariant as an Observational Probe in the Early Universe does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with On A Cosmological Invariant as an Observational Probe in the Early Universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On A Cosmological Invariant as an Observational Probe in the Early Universe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-159336