Functional renormalization group approach and gauge dependence in gravity theories
| Autor: | Ilya L. Shapiro, Eduardo Antonio dos Reis, Vítor Fernandes Barra, Tibério de Paula Netto, Peter M. Lavrov |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Physics
High Energy Physics - Theory 010308 nuclear & particles physics FOS: Physical sciences Renormalization group Special class 01 natural sciences BRST quantization Gravitation Theoretical physics High Energy Physics::Theory High Energy Physics - Theory (hep-th) 0103 physical sciences Quantum gravity Functional renormalization group 010306 general physics Gauge symmetry Gauge fixing |
| Zdroj: | Physical Review |
| Popis: | We investigate the gauge symmetry and gauge fixing dependence properties of the effective average action for quantum gravity models of general form. Using the background field formalism and the standard BRST-based arguments, one can establish the special class of regulator functions that preserves the background field symmetry of the effective average action. Unfortunately, regardless the gauge symmetry is preserved at the quantum level, the non-invariance of the regulator action under the global BRST transformations leads to the gauge fixing dependence even under the use of the on-shell conditions. Explanations concerning functional renormalization group applied to different models of quantum gravity added. Fits the version accepted in Phys. Rev. D |
| Databáze: | OpenAIRE |
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