Isocurvature Perturbations in Quintessence Cosmologies

Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Talk given at the Blois '03 Conference on Cosmology

Scientific paper

We present a systematic treatment of the initial conditions and evolution of cosmological perturbations in a universe containing photons, baryons, neutrinos, cold dark matter, and a scalar quintessence field. By formulating the evolution in terms of a differential equation involving a matrix acting on a vector comprised of the perturbation variables, we can use the familiar language of eigenvalues and eigenvectors. As the largest eigenvalue of the evolution matrix is fourfold degenerate, it follows that there are four dominant modes with non-diverging gravitational potential at early times, corresponding to adiabatic, cold dark matter isocurvature, baryon isocurvature and neutrino isocurvature perturbations. We conclude that quintessence does not lead to an additional independent mode.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Isocurvature Perturbations in Quintessence Cosmologies 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 Isocurvature Perturbations in Quintessence Cosmologies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Isocurvature Perturbations in Quintessence Cosmologies will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-447124

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.