A Possible Test for Quadratic Gravity in $d\ge 4$ dimensions

Abstract

In this letter we consider the Einsteinian strengths and dynamical degrees of freedom for quadratic gravity. We show that purely metric quadratic gravity theories are much stronger in Einsteinian sense than the competitive quadratic gravity theories which admit torsion.

11 pages, no figures, REVTEX

References in corpus (1)

• Variational Principles and Cosmological Models in Higher-Order Gravity

Cited by in corpus (2)

• Higher-order theories of gravity: diagnosis, extraction and reformulation via non-metric extra degrees of freedom
• Is torsion needed in a theory of gravity? A reappraisal