Abstract
In general, the Gibbons–Hawking temperature based on the Euclidean functional approach shows that de Sitter space in the Bunch–Davies vacuum is globally thermal. In the exactly soluble semiclassical Jackiw–Teitelboim model, we investigate thermal property of de Sitter space by taking into account the quantum back reaction of the geometry. The proper temperature of de Sitter space in the Bunch–Davies vacuum is found to vanish. In case of a certain quantum state breaking the de Sitter symmetry, de Sitter space can be made thermally exited; however, in this case the dilaton singularity cannot be avoided. Consequently, in the Jackiw–Teitelboim model the proper temperature of de Sitter space in the Bunch–Davies vacuum turns out to be zero and the Bunch–Davies vacuum is found to be the only physical vacuum without any naked singularities.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
