Journal article
Percolating cosmic string networks from kination
- Abstract:
- We describe a new mechanism, whose ingredients are realised in string compactifications, for the formation of cosmic (super)string networks. Oscillating string loops grow when their tension µ decreases with time. If 2H + ˙µ/µ < 0, where H is the Hubble parameter, loops grow faster than the scale factor and an initial population of isolated small loops (for example, produced by nucleation) can grow, percolate and form a network. This condition is satisfied for fundamental strings in the background of a kinating volume modulus rolling towards the asymptotic large volume region of moduli space. Such long kination epochs are motivated in string cosmology by both the electroweak hierarchy problem and the need to solve the overshoot problem. The tension of such a network today is set by the final vacuum; for phenomenologically appealing Large Volume Scenario (LVS) vacua, this would lead to a fundamental string network with Gµ ∼ 10−10.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 155.3KB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevD.110.083537
Authors
+ UK Research and Innovation
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- Funder identifier:
- https://ror.org/001aqnf71
- Grant:
- MR/V024566/2
- Publisher:
- American Physical Society
- Journal:
- Physical Review D: Particles, Fields, Gravitation and Cosmology More from this journal
- Volume:
- 110
- Article number:
- 083537
- Publication date:
- 2024-10-31
- Acceptance date:
- 2024-10-10
- DOI:
- EISSN:
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2470-0029
- ISSN:
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2470-0010
- Language:
-
English
- Keywords:
- Pubs id:
-
2037904
- Local pid:
-
pubs:2037904
- Deposit date:
-
2024-10-11
Terms of use
- Copyright holder:
- Conlon et al.
- Copyright date:
- 2024
- Rights statement:
- Copyright © 2024 The Author(s). Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
- Licence:
- CC Attribution (CC BY)
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