ORBi: Mandal Subhayan - \chi-\gamma mixing in an expanding universe

Reference : \chi-\gamma mixing in an expanding universe


	Document type :	Scientific congresses and symposiums : Unpublished conference
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/2268/107148

Title :	\chi-\gamma mixing in an expanding universe
Language :	English
Author, co-author :	Mandal, Subhayan [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Interactions fondamentales en physique et astrophysique >]
	Cudell, Jean-René [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Physique des astroparticules >]
Publication date :	Aug-2011
Page number :	3
On invitation :	Yes
Audience :	International
Event name :	EPS-HEP Conference-11
Event date :	21-08-2011 to 27-08-2011
Event organizer :	Fabio Zwirner, Johann Collot
Event place (city) :	Grenoble
Event country :	France
Keywords :	[en] expanding-universe ; pseudoscalar ; quasar-polarization
Abstract :	[en] We establish the equation of motion of pseudoscalar particles coupled to an electro- magnetic field in a classical gravitational background through the use of conformal time and flat geometry. We show that the expansion of the universe can lead to larger mixing than in a station- ary universe. We also show that for a broad range of parameters, one can obtain resonant mixing, i.e. a region in which the mixing becomes maximum.
Research units :	IFPA
Funders :	IAP
Target :	Professionals
Permalink :	http://hdl.handle.net/2268/107148
Mentions required by the publisher for OA :	Submitted To PoS (Proceedings of Science)

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