Infrared fixed point in quantum Einstein gravity

A bstract We performed the renormalization group analysis of the quantum Einstein gravity in the deep infrared regime for different types of extensions of the model. It is shown that an attractive infrared point exists in the broken symmetric phase of the model. It is also shown that due to the Gaus...

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Bibliographic Details
Published in:The journal of high energy physics 2012-07, Vol.2012 (7), Article 102
Main Authors: Nagy, S., Krizsan, J., Sailer, K.
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
Elementary Particles
Field theory
Gravitation
High energy physics
Infrared analysis
Phase transitions
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Relativity Theory
Scalars
String Theory
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Summary:A bstract We performed the renormalization group analysis of the quantum Einstein gravity in the deep infrared regime for different types of extensions of the model. It is shown that an attractive infrared point exists in the broken symmetric phase of the model. It is also shown that due to the Gaussian fixed point the IR critical exponent ν of the correlation length is 1/2. However, there exists a certain extension of the model which gives finite correlation length in the broken symmetric phase. It typically appears in case of models possessing a first order phase transitions as is demonstrated on the example of the scalar field theory with a Coleman-Weinberg potential.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP07(2012)102