Path integral measure, constraints and ghosts for massive gravitons with a cosmological constant

Metaxas, D

dc.contributor.author	Metaxas, D	en
dc.date.accessioned	2014-03-01T01:31:37Z
dc.date.available	2014-03-01T01:31:37Z
dc.date.issued	2009	en
dc.identifier.issn	1550-7998	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19855
dc.subject	Cosmological Constant	en
dc.subject	Path Integral	en
dc.subject	Point of View	en
dc.subject	De Sitter	en
dc.subject.classification	Astronomy & Astrophysics	en
dc.subject.classification	Physics, Particles & Fields	en
dc.subject.other	VELTMAN-ZAKHAROV DISCONTINUITY	en
dc.subject.other	QUANTUM-GRAVITY	en
dc.subject.other	FIELD-THEORY	en
dc.subject.other	STABILITY	en
dc.subject.other	SPACE	en
dc.subject.other	NO	en
dc.title	Path integral measure, constraints and ghosts for massive gravitons with a cosmological constant	en
heal.type	journalArticle	en
heal.identifier.primary	10.1103/PhysRevD.80.124029	en
heal.identifier.secondary	http://dx.doi.org/10.1103/PhysRevD.80.124029	en
heal.identifier.secondary	124029	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	For massive gravity in a de Sitter background one encounters problems of stability when the curvature is larger than the graviton mass. I analyze this situation from the path integral point of view and show that it is related to the conformal factor problem of Euclidean quantum (massless) gravity. When a constraint for massive gravity is incorporated and the proper treatment of the path integral measure is taken into account one finds that, for particular choices of the DeWitt metric on the space of metrics (in fact, the same choices as in the massless case), one obtains the opposite bound on the graviton mass. © 2009 The American Physical Society.	en
heal.publisher	AMER PHYSICAL SOC	en
heal.journalName	Physical Review D - Particles, Fields, Gravitation and Cosmology	en
dc.identifier.doi	10.1103/PhysRevD.80.124029	en
dc.identifier.isi	ISI:000273233300098	en
dc.identifier.volume	80	en
dc.identifier.issue	12	en