Asymptotically free mimetic gravity

Chamseddine, Ali H.; Mukhanov, Viatcheslav und Russ, Tobias B. (2019): Asymptotically free mimetic gravity. In: European Physical Journal C, Bd. 79, Nr. 7, 558

Abstract

The idea of asymptotically free gravity is implemented using a constrained mimetic scalar field. The effective gravitational constant is assumed to vanish at some limiting curvature. As a result singularities in spatially flat Friedmann and Kasner universes are avoided. Instead, the solutions in both cases approach a de Sitter metric with limiting curvature. We show that quantum metric fluctuations vanish when this limiting curvature is approached.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 1434-6044
• Sprache: Englisch