期刊
PHYSICS LETTERS B
卷 804, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.physletb.2020.135401
关键词
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资金
- DFG Research Training Group 1620 Models of Gravityand
- COST Action [CA16104]
We present a new type of ultracompact objects, featuring lightrings and echoes in the gravitational-wave spectrum. These particle-like solutions arise in Einstein-scalar-Gauss-Bonnet theories in four spacetime dimensions, representing globally regular spacetime manifolds. The scalar field diverges at the center, but the effective stress-energy tensor is free from pathologies. We determine their domain of existence and compare with wormhole solutions, black holes and the Fisher solution. (c) 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
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