The harder they fall, the bigger they become: tidal trapping of strings by microstate geometries
Journal Article
·
· Journal of High Energy Physics (Online)
- Univ. of Chicago, IL (United States); University of Chicago
- Univ. Paris Saclay, Gif sur Yvette (France); Univ. of Southern California, Los Angeles, CA (United States)
We consider the fate of a massless (or ultra-relativistic massive) string probe propagating down the BTZ-like throat of a microstate geometry in the D1-D5 system. Far down the throat, the probe encounters large tidal forces that stretch and excite the string. The excitations are limited by the very short transit time through the region of large tidal force, leading to a controlled approximation to tidal stretching. We show that the amount of stretching is proportional to the incident energy, and that it robs the probe of the kinetic energy it would need to travel back up the throat. As a consequence, the probe is effectively trapped far down the throat and, through repeated return passes, scrambles into the ensemble of nearby microstates. We propose that this tidal trapping may lead to weak gravitational echoes.
- Research Organization:
- Univ. of Chicago, IL (United States)
- Sponsoring Organization:
- European Research Council (ERC); USDOE Office of Science (SC), High Energy Physics (HEP)
- Grant/Contract Number:
- SC0009924; SC0011687
- OSTI ID:
- 1730943
- Journal Information:
- Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 4 Vol. 2021; ISSN 1029-8479
- Publisher:
- Springer BerlinCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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