Any theory can be made Weyl invariant by introducing a dilaton. It is shown here how to construct renormalization group equations for gravity that maintain this property. Explicit calculations are given only in the simplest approximation, namely for the one-loop beta functions of a dilaton conformally coupled to a dynamical metric, but the results have wider validity. This formalism could be used to define the meaning of a theory with a position-dependent cutoff: it is equivalent to a theory with a constant cutoff but a conformally related metric.
|Titolo:||Renormalization group flow of Weyl invariant dilaton gravity|
|Rivista:||NEW JOURNAL OF PHYSICS|
|Data di pubblicazione:||2011|
|Digital Object Identifier (DOI):||10.1088/1367-2630/13/12/125013|
|Appare nelle tipologie:||1.1 Journal article|