Cosmic bubble collisions

I briefly review the physics of cosmic bubble collisions in false-vacuum eternal inflation. My purpose is to provide an introduction to the subject for readers unfamiliar with it, focussing on recent work related to the prospects for observing the effects of bubble collisions in cosmology. I will at...

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Bibliographic Details
Published inClassical and quantum gravity Vol. 28; no. 20; pp. 204008 - np
Main Author Kleban, Matthew
Format Journal Article
LanguageEnglish
Published IOP Publishing 21.10.2011
Subjects
Bubbles
Collisions
Cosmology
Density
Inflation
Quantum gravity
Readers
Universe
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ISSN0264-9381
1361-6382
DOI10.1088/0264-9381/28/20/204008

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Summary:I briefly review the physics of cosmic bubble collisions in false-vacuum eternal inflation. My purpose is to provide an introduction to the subject for readers unfamiliar with it, focussing on recent work related to the prospects for observing the effects of bubble collisions in cosmology. I will attempt to explain the essential physical points as simply and concisely as possible, leaving most technical details to the references. I make no attempt to be comprehensive or complete. I also present a new solution to Einstein's equations that represents a bubble universe after a collision, containing vacuum energy and ingoing null radiation with an arbitrary density profile.
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ISSN:0264-9381
1361-6382
DOI:10.1088/0264-9381/28/20/204008