Asymptotic flatness and quantum geometry

Sengupta, Sandipan

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/6011

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DC Field	Value	Language
dc.contributor.author	Sengupta, Sandipan	-
dc.date.accessioned	2014-11-07T18:08:58Z	-
dc.date.available	2014-11-07T18:08:58Z	-
dc.date.issued	2014-04-21	-
dc.identifier.citation	Classical and Quantum Gravity, 2014, Vol.31, p085005	en
dc.identifier.issn	0264-9381	-
dc.identifier.issn	1361-6382 (online)	-
dc.identifier.uri	http://hdl.handle.net/2289/6011	-
dc.description	Open Access IOPSelect	en
dc.description.abstract	We construct a canonical quantization of the two dimensional theory of a parametrized scalar field on noncompact spatial slices. The kinematics is built upon generalized charge-network states which are labelled by smooth embedding spacetimes, unlike the standard basis states carrying only discrete labels. The resulting quantum geometry corresponds to a nondegenerate vacuum metric, which allows a consistent realization of the asymptotic conditions on the canonical fields. Although the quantum counterpart of the classical symmetry group of conformal isometries consists only of continuous global translations, Lorentz invariance can still be recovered in an effective sense. The quantum spacetime as characterized by a gauge invariant state is shown to be made up of discrete strips at the interior, and smooth at asymptotia. The analysis here is expected to be particularly relevant for a canonical quantization of asymptotically flat gravity using kinematical states labelled by smooth geometries.	en
dc.language.iso	en	en
dc.publisher	IOP Publishing Ltd.	en
dc.relation.uri	http://arxiv.org/abs/1309.5266	en
dc.relation.uri	http://dx.doi.org/10.1088/0264-9381/31/8/085005	en
dc.relation.uri	http://adsabs.harvard.edu/abs/2014CQGra..31h5005S	en
dc.rights	2014 IOP Publishing Ltd.	en
dc.subject	parametrized field thory	en
dc.subject	24months	en
dc.title	Asymptotic flatness and quantum geometry	en
dc.type	Article	en
Appears in Collections:	Research Papers (TP)

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