Asymptotic safety in O(N) scalar models coupled to gravity
We extend recent results on scalar–tensor theories to the case of an O(N)-invariant multiplet. Some exact fixed point solutions of the RG flow equations are discussed. We find that also in the functional context, on employing a standard “type-I” cutoff, too many scalars destroy the gravitational fix...
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Elsevier
2016-02-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269315009703 |
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doaj-7e51be3abb4b4ac0993ecd439de44c312020-11-24T23:28:24ZengElsevierPhysics Letters B0370-26931873-24452016-02-01753C27428110.1016/j.physletb.2015.12.022Asymptotic safety in O(N) scalar models coupled to gravityPeter Labus0Roberto Percacci1Gian Paolo Vacca2SISSA, via Bonomea 265, I-34136 Trieste, ItalySISSA, via Bonomea 265, I-34136 Trieste, ItalyINFN, Sezione di Bologna, via Irnerio 46, I-40126 Bologna, ItalyWe extend recent results on scalar–tensor theories to the case of an O(N)-invariant multiplet. Some exact fixed point solutions of the RG flow equations are discussed. We find that also in the functional context, on employing a standard “type-I” cutoff, too many scalars destroy the gravitational fixed point. For d=3 we show the existence of the gravitationally dressed Wilson–Fisher fixed point also for N>1. We discuss also the results of the analysis for a different, scalar-free, coarse-graining scheme.http://www.sciencedirect.com/science/article/pii/S0370269315009703 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Peter Labus Roberto Percacci Gian Paolo Vacca |
| spellingShingle |
Peter Labus Roberto Percacci Gian Paolo Vacca Asymptotic safety in O(N) scalar models coupled to gravity Physics Letters B |
| author_facet |
Peter Labus Roberto Percacci Gian Paolo Vacca |
| author_sort |
Peter Labus |
| title |
Asymptotic safety in O(N) scalar models coupled to gravity |
| title_short |
Asymptotic safety in O(N) scalar models coupled to gravity |
| title_full |
Asymptotic safety in O(N) scalar models coupled to gravity |
| title_fullStr |
Asymptotic safety in O(N) scalar models coupled to gravity |
| title_full_unstemmed |
Asymptotic safety in O(N) scalar models coupled to gravity |
| title_sort |
asymptotic safety in o(n) scalar models coupled to gravity |
| publisher |
Elsevier |
| series |
Physics Letters B |
| issn |
0370-2693 1873-2445 |
| publishDate |
2016-02-01 |
| description |
We extend recent results on scalar–tensor theories to the case of an O(N)-invariant multiplet. Some exact fixed point solutions of the RG flow equations are discussed. We find that also in the functional context, on employing a standard “type-I” cutoff, too many scalars destroy the gravitational fixed point. For d=3 we show the existence of the gravitationally dressed Wilson–Fisher fixed point also for N>1. We discuss also the results of the analysis for a different, scalar-free, coarse-graining scheme. |
| url |
http://www.sciencedirect.com/science/article/pii/S0370269315009703 |
| work_keys_str_mv |
AT peterlabus asymptoticsafetyinonscalarmodelscoupledtogravity AT robertopercacci asymptoticsafetyinonscalarmodelscoupledtogravity AT gianpaolovacca asymptoticsafetyinonscalarmodelscoupledtogravity |
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1725549342309220352 |