TY - JOUR
T1 - Gravitational instability of exotic compact objects
AU - Addazi, Andrea
AU - Marcianò, Antonino
AU - Yunes, Nicolás
N1 - Funding Information:
We would like to thank Niayesh Afshordi, Ramy Brustein, Luis Lehner and Frans Pretorius for useful discussions on these subjects. AA and AM wish to acknowledge support by the NSFC, through the Grant no. 11875113, the Shanghai Municipality, through the Grant no. KBH1512299, and by Fudan University, through the Grant no. JJH1512105. NY acknowledges support from NSF Grant PHY-1759615 and PHY1748958, NASA Grants NNX16AB98G and 80NSSC17M0041, and the hospitality of KITP where some of this work was completed.
Publisher Copyright:
© 2020, The Author(s).
PY - 2020/1/1
Y1 - 2020/1/1
N2 - Exotic compact objects with physical surfaces a Planckian distance away from where the horizon would have been are inspired by quantum gravity. Most of these objects are defined by a classical spacetime metric, such as boson stars, gravastars and wormholes. We show that these classical objects are gravitationally unstable because accretion by ordinary and dark matter, and by gravitational waves, forces them to collapse into a black hole by the Hoop conjecture. To avoid collapse, either their surface must be a macroscopic distance away from the horizon, or they must violate the null energy condition.
AB - Exotic compact objects with physical surfaces a Planckian distance away from where the horizon would have been are inspired by quantum gravity. Most of these objects are defined by a classical spacetime metric, such as boson stars, gravastars and wormholes. We show that these classical objects are gravitationally unstable because accretion by ordinary and dark matter, and by gravitational waves, forces them to collapse into a black hole by the Hoop conjecture. To avoid collapse, either their surface must be a macroscopic distance away from the horizon, or they must violate the null energy condition.
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U2 - 10.1140/epjc/s10052-019-7575-9
DO - 10.1140/epjc/s10052-019-7575-9
M3 - Letter
C2 - 32025198
AN - SCOPUS:85078227292
SN - 1434-6044
VL - 80
JO - European Physical Journal C
JF - European Physical Journal C
IS - 1
M1 - 36
ER -