Generalized Robertson-Walker Space-Time Admitting Evolving Null Horizons Related to a Black Hole Event Horizon. (18th September 2016)

• Record Type: Journal Article
• Authors: Duggal, K. L.
• Other Names: Vagenas Elias C. Academic Editor.
• Is Part Of: International scholarly research notices. Volume 2016(2016)
• Publication Date: 2016-09-18
• Subjects: Medical sciences -- Periodicals; Life sciences -- Periodicals; Medicine -- Periodicals; Science -- Periodicals; Biomedical Technology; Biological Science Disciplines; Medicine; Life sciences; Medical sciences; Medicine; Science; Periodical; Periodicals; Fulltext; Internet Resources; Periodicals; Electronic journals
• DOI: 10.1155/2016/9312525
• Languages: English
• ISSNs: 2356-7872

Abstract

Abstract : A new technique is used to study a family of time-dependent null horizons, called " Evolving Null Horizons " (ENHs), of generalized Robertson-Walker (GRW) space-time( M ¯, g ¯ ) such that the metricg ¯ satisfies a kinematic condition. This work is different from our early papers on the same issue where we used( 1 + n ) -splitting space-time but only some special subcases of GRW space-time have this formalism. Also, in contrast to previous work, we have proved that each member of ENHs is totally umbilical in( M ¯, g ¯ ) . Finally, we show that there exists an ENH which is always a null horizon evolving into a black hole event horizon and suggest some open problems.