Quantum aspects of ergoregion instability

Kang, Gungwon

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/3423

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DC Field	Value	Language
dc.contributor.author	Kang, Gungwon	-
dc.date.accessioned	2008-02-05T06:29:50Z	-
dc.date.available	2008-02-05T06:29:50Z	-
dc.date.issued	1997	-
dc.identifier.citation	Physical Review D, 1997, Vol.55, p7563-7573	en
dc.identifier.issn	E-ISSN(s): 1089-4918	-
dc.identifier.issn	P-ISSN(s): 0556-2821	-
dc.identifier.uri	http://hdl.handle.net/2289/3423	-
dc.description	Open Access.	en
dc.description.abstract	It has been known classically that a star with an ergoregion but no event horizon is unstable to the emission of scalar, electromagnetic, and gravitational waves. This classical ergoregion instability is characterized by complex frequency modes. We show how to canonically quantize a neutral scalar field in the presence of such unstable modes by considering a simple model for a rapidly rotating star. One of the interesting results is that there exists a physically meaningful mode decomposition including unstable normal mode solutions whose representation turns out to be a non-Fock-like Hilbert space. A "particle" detector model placed in the in-vacuum state also shows that stars with ergoregions give rise to a spontaneous energy radiation to spatial infinity until ergoregions disappear.	en
dc.format.extent	248138 bytes	-
dc.format.mimetype	application/pdf	-
dc.language.iso	en	en
dc.publisher	The American Physical Society	en
dc.relation.uri	http://dx.doi.org/10.1103/PhysRevD.55.7563	en
dc.rights	1997 The American Physical Society	en
dc.title	Quantum aspects of ergoregion instability	en
dc.type	Article	en
Appears in Collections:	Research Papers (TP)

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