Fuzzy Euclidean wormholes in the inflationary universe
- National Taiwan Univ., Taipei (Taiwan); SLAC National Accelerator Lab., Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology
- Asia Pacific Center for Theoretical Physics, Pohang (South Korea); Bespin Global, Seoul (South Korea)
- Asia Pacific Center for Theoretical Physics, Pohang (South Korea); POSTECH, Pohang (South Korea). Dept. of Physics; Pusan National Univ., Busan (South Korea)
In this paper, we investigate complex-valued Euclidean wormholes in the Starobinsky inflation. Due to the properties of the concave inflation potential, the classicality condition at both ends of the wormhole can be satisfied, as long as the initial condition of the inflation field is such that it is located sufficiently close to the hilltop. Furthermore, we compare the probabilities of classicalized wormholes with the Hartle–Hawking compact instantons and conclude that the Euclidean wormholes are probabilistically preferred than compact instantons, if the inflation lasts more than 50 e-foldings. Our result assumes that the Euclidean path integral is the correct effective description of quantum gravity. This opens a new window for various future investigations that can be either confirmed or refuted by future experiments.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE; Taiwan National Science Council; Korean Ministry of Education, Science, and Technology
- Grant/Contract Number:
- NSC 97-2112-M-002-026-MY3; AC02-76SF00515; 2018R1D1A1B07049126; AC03-76SF00515
- OSTI ID:
- 1638176
- Alternate ID(s):
- OSTI ID: 1703066
- Journal Information:
- Physics of the Dark Universe, Vol. 28, Issue C; ISSN 2212-6864
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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