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http://hdl.handle.net/2445/12336
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DC Field | Value | Language |
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dc.contributor.author | Garriga Torres, Jaume | cat |
dc.date.accessioned | 2010-05-06T08:53:49Z | - |
dc.date.available | 2010-05-06T08:53:49Z | - |
dc.date.issued | 1996 | cat |
dc.identifier.issn | 0556-2821 | cat |
dc.identifier.uri | http://hdl.handle.net/2445/12336 | - |
dc.description.abstract | In the context of the open inflationary universe, we calculate the amplitude of quantum fluctuations which deform the bubble shape. These give rise to scalar field fluctuations in the open Friedmann-Robertson-Walker universe which is contained inside the bubble. One can transform to a new gauge in which matter looks perfectly smooth, and then the perturbations behave as tensor modes (gravitational waves of very long wave-length). For ( 1 − Ω ) ≪ 1 , where Ω is the density parameter, the microwave temperature anisotropies produced by these modes are of order δ T T ∼ H ( R 0 μ l ) − 1 2 ( 1 − Ω ) l 2 . Here, H is the expansion rate during inflation, R 0 is the intrinsic radius of the bubble at the time of nucleation, μ is the bubble wall tension, and l labels the different multipoles ( l > 1 ). The gravitational back reaction of the bubble has been ignored. In this approximation, G μ R 0 ≪ 1 , and the new effect can be much larger than the one due to ordinary gravitational waves generated during inflation (unless, of course, Ω gets too close to 1, in which case the new effect disappears). | - |
dc.format.extent | 6 p. | cat |
dc.format.mimetype | application/pdf | eng |
dc.language.iso | eng | eng |
dc.publisher | The American Physical Society | eng |
dc.relation.isformatof | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevD.54.4764 | cat |
dc.relation.ispartof | Physical Review D, 1996, vol. 54, núm. 8, p. 4764-4769 | cat |
dc.relation.uri | http://dx.doi.org/10.1103/PhysRevD.54.4764 | - |
dc.rights | (c) The American Physical Society, 1996 | eng |
dc.source | Articles publicats en revistes (Física de la Matèria Condensada) | - |
dc.subject.classification | Teoria de camps (Física) | cat |
dc.subject.classification | Ones gravitacionals | cat |
dc.subject.other | Field theory (Physics) | eng |
dc.subject.other | Gravitational waves | eng |
dc.title | Bubble fluctuations in Omega less than 1 inflation | eng |
dc.type | info:eu-repo/semantics/article | eng |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 507982 | cat |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) |
Files in This Item:
File | Description | Size | Format | |
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507982.pdf | 157.39 kB | Adobe PDF | View/Open |
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