DSpace at EWHA: Second-order energy-momentum tensor of a scalar field

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DC Field	Value	Language
dc.contributor.author	공진욱	*
dc.date.accessioned	2022-11-03T16:30:04Z	-
dc.date.available	2022-11-03T16:30:04Z	-
dc.date.issued	2022	*
dc.identifier.issn	2470-0010	*
dc.identifier.issn	2470-0029	*
dc.identifier.other	OAK-32535	*
dc.identifier.uri	https://dspace.ewha.ac.kr/handle/2015.oak/262820	-
dc.description.abstract	We investigate the second-order effective energy-momentum tensor (2EMT) constructed by the quadratic terms of the linear scalar cosmological perturbations while the universe is dominated by a scalar field. We show that 2EMT is gauge dependent. We then study 2EMT in three (longitudinal, spatially flat, and comoving) gauge conditions in the slow-roll stage of inflation. We find that 2EMT exhibits an effective fluid of w 1/4 -1=3 on superhorizon scales in all of those gauge conditions.	*
dc.language	English	*
dc.publisher	AMER PHYSICAL SOC	*
dc.title	Second-order energy-momentum tensor of a scalar field	*
dc.type	Article	*
dc.relation.issue	8	*
dc.relation.volume	106	*
dc.relation.index	SCIE	*
dc.relation.index	SCOPUS	*
dc.relation.journaltitle	PHYSICAL REVIEW D	*
dc.identifier.doi	10.1103/PhysRevD.106.084027	*
dc.identifier.wosid	WOS:000876529100007	*
dc.identifier.scopusid	2-s2.0-85140252194	*
dc.author.google	Cho, Inyong	*
dc.author.google	Gong, Jinn-Ouk	*
dc.author.google	Oh, Seung Hun	*
dc.contributor.scopusid	공진욱(7402707824)	*
dc.date.modifydate	20231214113754	*