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Instanton tunneling for de Sitter space with real projective spatial sections
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA. Center for Astronomy and Astrophysics, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China; Riemann Center for Geometry and Physics, Leibniz Universit├Ąt Hannover, Appelstrasse 2, 30167 Hannover, Germany.
2017 (English)In: Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, E-ISSN 1475-7516, no 4, 040Article in journal (Refereed) Published
Abstract [en]

The physics of tunneling from one spacetime to another is often understood in terms of instantons. For some instantons, it was recently shown in the literature that there are two complementary "interpretations" for their analytic continuations. Dubbed "something-to-something" and "nothing-to-something" interpretations, respectively, the former involves situation in which the initial and final hypersurfaces are connected by a Euclidean manifold, whereas the initial and final hypersurfaces in the latter case are not connected in such a way. We consider a de Sitter space with real projective space RP3 spatial sections, as was originally understood by de Sitter himself. This original version of de Sitter space has several advantages over the usual de Sitter space with S-3 spatial sections. In particular, the interpretation of the de Sitter entropy as entanglement entropy is much more natural. We discuss the subtleties involved in the tunneling of such a de Sitter space.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2017. no 4, 040
Keyword [en]
quantum cosmology, gravity
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-209080DOI: 10.1088/1475-7516/2017/04/040ISI: 000401806200040ScopusID: 2-s2.0-85019422991OAI: oai:DiVA.org:kth-209080DiVA: diva2:1111450
Note

QC 20170619

Available from: 2017-06-19 Created: 2017-06-19 Last updated: 2017-06-19Bibliographically approved

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Ong, Yen Chin
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  • apa
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