De Sitter scattering amplitudes in the Born approximation

dc.contributor.authorFerrero, Renata
dc.contributor.authorRipken, Chris
dc.date.accessioned2023-06-20T13:13:06Z
dc.date.available2023-06-20T13:13:06Z
dc.date.issued2022
dc.description.abstractWe present a covariant framework to compute scattering amplitudes and potentials in a de Sitter background. In this setting, we compute the potential of a graviton-mediated scattering process involving two very massive scalars at tree level. Although the obtained scattering potential reproduces the Newtonian potential at short distances, on Hubble- size length scales it is affected by the constant curvature: effectively, it yields a repulsive force at sub-Hubble distances. This can be attributed to the expansion of the de Sitter universe. Beyond the de Sitter horizon, the potential vanishes identically. Hence, the scattering amplitude unveils the geometric properties of de Sitter spacetime in a novel and nontrivial way.en_GB
dc.identifier.doihttp://doi.org/10.25358/openscience-8853
dc.identifier.urihttps://openscience.ub.uni-mainz.de/handle/20.500.12030/8869
dc.language.isoengde
dc.rightsCC-BY-4.0*
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/*
dc.subject.ddc530 Physikde_DE
dc.subject.ddc530 Physicsen_GB
dc.titleDe Sitter scattering amplitudes in the Born approximationen_GB
dc.typeZeitschriftenaufsatzde
jgu.journal.issue5de
jgu.journal.titleSciPost physicsde
jgu.journal.volume13de
jgu.organisation.departmentFB 08 Physik, Mathematik u. Informatikde
jgu.organisation.nameJohannes Gutenberg-Universität Mainz
jgu.organisation.number7940
jgu.organisation.placeMainz
jgu.organisation.rorhttps://ror.org/023b0x485
jgu.pages.alternative106de
jgu.publisher.doi10.21468/SciPostPhys.13.5.106de
jgu.publisher.issn2542-4653de
jgu.publisher.nameSciPost Foundationde
jgu.publisher.placeAmsterdamde
jgu.publisher.year2022
jgu.rights.accessrightsopenAccess
jgu.subject.ddccode530de
jgu.subject.dfgNaturwissenschaftende
jgu.type.contenttypeScientific articlede
jgu.type.dinitypeArticleen_GB
jgu.type.resourceTextde
jgu.type.versionPublished versionde

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