Instantons for particles joined by strings in three dimensional gravity
- Creators
- O'Brien, Liam
- Sorbo, Lorenzo
Abstract
We study the instantons describing the production of particles at the ends of codimension-one objects (strings and struts) in (2 + 1)-dimensional Minkowski and de Sitter spaces. A Minkowskian background allows only for systems with vanishing total mass, so that either negative mass particles or negative tension struts are required. On a de Sitter background, on the other hand, we find processes describing the production of string/particle systems with no negative energies involved. We also compute the probabilities of creating and of breaking an infinite cosmic string in de Sitter space. We perform our analysis of the system in de Sitter space employing a generalization of the toroidal coordinate system to the three-sphere.
Additional Information
© 2019 IOP Publishing Ltd. Received 4 June 2019; Accepted 2 October 2019; Accepted Manuscript online 2 October 2019; Published 14 November 2019. We thank David Kastor for several useful discussions, especially on the bipolar/toroidal coordinates in Euclidean space. This work was partially supported by the US-NSF Grants PHY-1520292 and PHY-1820675.Attached Files
Submitted - 1911-06483.pdf
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Additional details
- Eprint ID
- 99831
- DOI
- 10.1088/1361-6382/ab4a3e
- Resolver ID
- CaltechAUTHORS:20191114-101551161
- PHY-1520292
- NSF
- PHY-1820675
- NSF
- Created
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2019-11-14Created from EPrint's datestamp field
- Updated
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2023-10-02Created from EPrint's last_modified field