Adiabatic and non-adiabatic perturbations for loop quantum cosmology

Details Adiabatic and non-adiabatic perturbations for loop quantum cosmology Adiabatic and non-adiabatic perturbations for loop quantum cosmology

2011-11-14

arxiv.org/abs/1111.3179v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, 3 figures

Scientific paper

We generalize the perturbations theory of loop quantum cosmology to a hydrodynamical form and define an effective curvature perturbation on an uniform density hypersurfaces $\zeta_e$. As in the classical cosmology, $\zeta_e$ should be gauge-invariant and conservation on the large scales. The evolutions of both the adiabatic and the non-adiabatic perturbations for a multi-fluids model are investigated in the framework of the effective hydrodynamical theory of loop quantum cosmology with the inverse triad correction. We find that, different from the classical cosmology, the evolution of the large-scales non-adiabatic entropy perturbation can be driven by an adiabatic curvature perturbation and this adiabatic source for the non-adiabatic perturbation is a quantum effect. As an application of the related formalism, we study a decay model and give out the numerical results.

Affiliated with

Also associated with

No associations

Rating

Adiabatic and non-adiabatic perturbations for loop quantum cosmology 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 Adiabatic and non-adiabatic perturbations for loop quantum cosmology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adiabatic and non-adiabatic perturbations for loop quantum cosmology will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-217978