Regulator dependence of fixed points in quantum Einstein gravity with R 2 truncation

S. Nagy, B. Fazekas, Z. Peli, K. Sailer, I. Steib

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We performed a functional renormalization group analysis for the quantum Einstein gravity including a quadratic term in the curvature. The ultraviolet non-Gaussian fixed point and its critical exponent for the correlation length are identified for different forms of regulators in case of dimension 3. We searched for that optimized regulator where the physical quantities show the least regulator parameter dependence. It is shown that the Litim regulator satisfies this condition. The infrared fixed point has also been investigated, it is found that the exponent is insensitive to the third coupling introduced by the R 2 term.

Original languageEnglish
Article number055001
JournalClassical and Quantum Gravity
Volume35
Issue number5
DOIs
Publication statusPublished - Jan 31 2018

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regulators
gravitation
approximation
exponents
curvature

Keywords

  • critical exponent
  • quantum Einstein gravity
  • Renormalization group

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Regulator dependence of fixed points in quantum Einstein gravity with R 2 truncation. / Nagy, S.; Fazekas, B.; Peli, Z.; Sailer, K.; Steib, I.

In: Classical and Quantum Gravity, Vol. 35, No. 5, 055001, 31.01.2018.

Research output: Contribution to journalArticle

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