Dynamically adjusted cosmological constant and conformal anomalies

Details Dynamically adjusted cosmological constant and conformal anomalies Dynamically adjusted cosmological constant and conformal anomalies

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nuphb.329..410t&link_type=abstract

Nuclear Physics B, Volume 329, Issue 2, p. 410-444.

Physics

Nuclear Physics

31

Scientific paper

We investigate the dynamical adjustment of the cosmological constant by a ``cosmic'' physical scalar field φ0. We consider the quantization of general matter theories in the gravitational and φ0 backgrounds. We find that, in general, such adjustment mechanisms do not work without fine-tuning of parameters. We argue, however, that the massless Brans-Dicke coupling for φ0, where the ratio of the gravitational constant to all other mass scales is dynamical, is special: adjustment without fine-tuning may then be possible in many instances, provided a Wess-Zumino functional generated by the conformal anomaly (analog of the Liouville action in 2 dimensions) is properly included in the evaluation of the effective action. The mechanism can generate large scalar mass hierarchies.
I would like to thank C. Kounnas, E. D'Hoker, P. Mazur, R. Peccei, M. Porrati, R. Akhoury, and M. Veltman for discussions.

Affiliated with

Also associated with

No associations

Rating

Dynamically adjusted cosmological constant and conformal anomalies 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 Dynamically adjusted cosmological constant and conformal anomalies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamically adjusted cosmological constant and conformal anomalies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1564173