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dc.contributor.author | Zakharov A. | |
dc.date.accessioned | 2018-09-14T20:55:57Z | |
dc.date.available | 2018-09-14T20:55:57Z | |
dc.date.issued | 1978 | |
dc.identifier.issn | 0038-5697 | |
dc.identifier.uri | https://dspace.kpfu.ru/xmlui/handle/net/132871 | |
dc.description.abstract | Long-wavelength gravitational perturbations are studied in an isotropic expanding universe filled with an ultrarelativistic gas. A kinetic study in the collisionless approximation shows that scalar and vector perturbations which appear at a time η0 ≪ 1/n, where N is the wave vector and η is the time coordinate x4, grow if the perturbation of the macroscopic momentum density of the gas at time η0 is nonvanishing. The growth continues until the time η1=27η0, at which the perturbation of the macroscopic momentum density of the gas vanishes. A solution is also derived for tensor perturbations in the limit nη ≪ 1. © 1978 Plenum Publishing Corporation. | |
dc.relation.ispartofseries | Soviet Physics Journal | |
dc.title | Kinetics of small perturbations in an isotropic world - III. Long-wavelength perturbations in an ultrarelativistic gas | |
dc.type | Article | |
dc.relation.ispartofseries-issue | 4 | |
dc.relation.ispartofseries-volume | 21 | |
dc.collection | Публикации сотрудников КФУ | |
dc.relation.startpage | 442 | |
dc.source.id | SCOPUS00385697-1978-21-4-SID33845720513 |