Asymptotic Safe Gravity, Spherical and Cosmological Solutions, "Phenomenology of Strong Gravity", International Workshop, NU, Astana, Julian Schwinger Foundation, 14-16 September 2016. "Phenomenology of Strong Gravity", International Workshop, NU, Astana, Julian Schwinger Foundation, 14-16 September 2016.

Research output: Contribution to conferenceAbstract

Abstract

Modified Einstein equations have been developed in the context of Asymptotic Safety (AS) Proposal for Quantum gravity. These equations cover both vacuum and matter cases and are able to encompass the running behavior of Newton's constant and cosmological constant, $G$ and $\Lambda$, near the non Gaussian fixed point of AS.
Based on this new framework, general non-singular inflationary cosmological solutions for an initial cosmic period of pure vacuum birth era have been derived. In addition, interesting matter solutions have been found that exhibit either particle production with entropy production or non zero bulk viscosity with entropy generation and reheating.
Finally, new general non singular spherically symmetric solutions have been discovered with a cosmological ``constant'' $\Lambda$ as a source. It is expected that Renormalization Group improved black hole solutions encapsulate at their centers a space-time description suggested by our derived solutions.

Original languageEnglish
Publication statusPublished - Sep 14 2016
Event Phenomenology of Strong Gravity, International Workshop, NU, Astana, Kazakhstan - NU, Astana, Kazakhstan
Duration: Sep 14 2016Sep 16 2016
http://inspirehep.net/record/1468226

Conference

Conference Phenomenology of Strong Gravity, International Workshop, NU, Astana, Kazakhstan
CountryKazakhstan
CityAstana
Period9/14/169/16/16
Internet address

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