Work

Renormalizable, asymptotically free gravity without ghosts or tachyons

Year: 2017

Type: article

Abstract: We analyze scale invariant quadratic quantum gravity incorporating nonminimal coupling to a multiplet of scalar fields in a gauge theory, with particular emphasis on the consequences for its interpretation resulting from a transformation from the Jordan frame to the Einstein frame. The result is the natural emergence of a de Sitter space solution which, depending the gauge theory and region of parameter space chosen, can be free of ghosts and tachyons, and completely asymptotically free. In the case of an SO(10) model, we present a detailed account of the spontaneous symmetry breaking, and we calculate the leading (two-loop) contribution to the dilaton mass.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.96.124025

Authors: Martin B. Einhorn, D. R. Timothy Jones

Institutions: University of California, Santa Barbara, University of Michigan, Kavli Institute for Theoretical Physics, University of Liverpool

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: National Science Foundation

Award: G258938352