FAST TRACK COMMUNICATION: An effective gravity model and singularity avoidance in quantum FRW cosmologies

Details FAST TRACK COMMUNICATION: An effective gravity model and singularity avoidance in quantum FRW cosmologies FAST TRACK COMMUNICATION: An effective gravity model and singularity avoidance in quantum FRW cosmologies

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009jpha...42t2002h&link_type=abstract

Journal of Physics A: Mathematical and Theoretical, Volume 42, Issue 20, pp. 202002 (2009).

Physics

2

Scientific paper

An effective formulation of gravity is discussed, which lies in between the Wheeler-DeWitt approach and that of classical cosmology. It has the virtue of naturally avoiding the singularity that appears in Friedman-Robertson-Walker cosmologies. The mechanism is made explicit in specific examples, where it is compared with the quantization provided by loop quantum cosmology. It is argued that it is the regularization of the classical Hamiltonian, performed in that theory, that avoids the singularity, rather than usually invoked quantum effects. However, a deeper study of the quantum nature of geometry in that framework should help to completely clarify the issue.

Affiliated with

Also associated with

No associations

Rating

FAST TRACK COMMUNICATION: An effective gravity model and singularity avoidance in quantum FRW 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 FAST TRACK COMMUNICATION: An effective gravity model and singularity avoidance in quantum FRW cosmologies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and FAST TRACK COMMUNICATION: An effective gravity model and singularity avoidance in quantum FRW cosmologies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-814400