Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 공진욱 | - |
dc.date.accessioned | 2024-02-15T05:12:04Z | - |
dc.date.available | 2024-02-15T05:12:04Z | - |
dc.date.issued | 2023 | - |
dc.identifier.issn | 1029-8479 | - |
dc.identifier.other | OAK-34658 | - |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/267848 | - |
dc.description.abstract | We show that the general vacuum states that respect the de Sitter symmetry, known as the α-vacua, can introduce non-vanishing parity-violating tensor non-Gaussianities. This is due to the mixing by the Bogoliubov transformation of the positive and negative frequency modes of the Bunch-Davies vacuum. We calculate explicitly the bispectra of tensor perturbations and show that the amplitude can be exponentially enhanced for certain choices of the squeezing parameter α and the phase ϕ of the α-vacua. We find a new shape for the parity-violating tensor bispectrum which peaks in the flattened configuration. © 2023, The Author(s). | - |
dc.language | English | - |
dc.publisher | Springer Science and Business Media Deutschland GmbH | - |
dc.subject | de Sitter space | - |
dc.subject | Effective Field Theories | - |
dc.title | New shape of parity-violating graviton non-Gaussianity | - |
dc.type | Article | - |
dc.relation.issue | 10 | - |
dc.relation.volume | 2023 | - |
dc.relation.index | SCIE | - |
dc.relation.index | SCOPUS | - |
dc.relation.journaltitle | Journal of High Energy Physics | - |
dc.identifier.doi | 10.1007/JHEP10(2023)140 | - |
dc.identifier.scopusid | 2-s2.0-85174939195 | - |
dc.author.google | Gong | - |
dc.author.google | Jinn-Ouk | - |
dc.author.google | Maria | - |
dc.author.google | Sasaki | - |
dc.author.google | Misao | - |
dc.author.google | Mylova | - |
dc.contributor.scopusid | 공진욱(7402707824) | - |
dc.date.modifydate | 20240201163920 | - |