dc.date.accessioned | 2022-05-25T15:57:01Z | |
dc.date.available | 2022-05-25T15:57:01Z | |
dc.date.created | 2022-05-18T13:02:03Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Hassani, Farbod Shi, Pan Adamek, Julian Kunz, Martin Wittwer, Peter . New nonlinear instability for scalar fields. Physical Review D. 2022, 105(2) | |
dc.identifier.uri | http://hdl.handle.net/10852/94222 | |
dc.description.abstract | In this Letter, we introduce the nonlinear partial differential equation ∂2τπ∝(→∇π)2 showing a new type of instability. Such equations appear in the effective field theory (EFT) of dark energy for the k-essence model as well as in many other theories based on the EFT formalism. We demonstrate the occurrence of instability in the cosmological context using a relativistic N-body code, and we study it mathematically in 3+1 dimensions within spherical symmetry. We show that this term dominates for the low speed of sound limit where some important linear terms are suppressed. | |
dc.language | EN | |
dc.publisher | American Physical Society | |
dc.title | New nonlinear instability for scalar fields | |
dc.title.alternative | ENEngelskEnglishNew nonlinear instability for scalar fields | |
dc.type | Journal article | |
dc.creator.author | Hassani, Farbod | |
dc.creator.author | Shi, Pan | |
dc.creator.author | Adamek, Julian | |
dc.creator.author | Kunz, Martin | |
dc.creator.author | Wittwer, Peter | |
cristin.unitcode | 185,15,3,0 | |
cristin.unitname | Institutt for teoretisk astrofysikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |
dc.identifier.cristin | 2025206 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physical Review D&rft.volume=105&rft.spage=&rft.date=2022 | |
dc.identifier.jtitle | Physical Review D | |
dc.identifier.volume | 105 | |
dc.identifier.issue | 2 | |
dc.identifier.pagecount | 5 | |
dc.identifier.doi | https://doi.org/10.1103/PhysRevD.105.L021304 | |
dc.identifier.urn | URN:NBN:no-96774 | |
dc.subject.nvi | VDP::Astrofysikk, astronomi: 438 | |
dc.type.document | Tidsskriftartikkel | |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 2470-0010 | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/94222/1/PhysRevD.105.L021304.pdf | |
dc.type.version | PublishedVersion | |
cristin.articleid | L021304 | |
dc.relation.project | NFR/301367 | |