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Further evidence for a gravitational fixed point

Roberto Percacci
Phys. Rev. D 73, 041501(R) – Published 1 February 2006

Abstract

A theory of gravity with a generic action functional and minimally coupled to N matter fields has a nontrivial fixed point in the leading large N approximation. At this fixed point, the cosmological constant and Newton’s constant are nonzero and UV relevant; the curvature squared terms are asymptotically free with marginal behavior; all higher order terms are irrelevant and can be set to zero by a suitable choice of cutoff function.

  • Received 23 November 2005

DOI:https://doi.org/10.1103/PhysRevD.73.041501

©2006 American Physical Society

Authors & Affiliations

Roberto Percacci*

  • SISSA, via Beirut 4, I-34014 Trieste, Italy
  • INFN, Sezione di Trieste, Italy

  • *Electronic address: percacci@sissa.it

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Issue

Vol. 73, Iss. 4 — 15 February 2006

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