Transition to light-like trajectories in thin shell dynamics

Robert B. Mann, Ian Nagle, Daniel R. Terno

Research output: Contribution to journalArticleResearchpeer-review

Abstract

It was recently shown that a massive thin shell that is sandwiched between a flat interior and an exterior geometry given by the outgoing Vaidya metric becomes null in a finite proper time. We investigate this transition for a general spherically-symmetric metric outside the shell and find that it occurs generically. Once the shell is null its persistence on a null trajectory can be ensured by several mechanisms that we describe. Using the outgoing Vaidya metric as an example we show that if a dust shell acquires surface pressure on its transition to a null trajectory it can evade the Schwarzschild radius through its collapse. Alternatively, the pressureless collapse may continue if the exterior geometry acquires a more general form.

LanguageEnglish
Pages19-35
Number of pages17
JournalNuclear Physics B
Volume936
DOIs
Publication statusPublished - 1 Nov 2018

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trajectories
geometry
dust
radii

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Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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Transition to light-like trajectories in thin shell dynamics. / Mann, Robert B.; Nagle, Ian; Terno, Daniel R.

In: Nuclear Physics B, Vol. 936, 01.11.2018, p. 19-35.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Terno, Daniel R.

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