Particle-like ultracompact objects in Einstein-scalar-Gauss-Bonnet theories
Burkhard Kleihaus, Jutta Kunz, Panagiota Kanti
Abstract
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.
Topics & Concepts
PhysicsGauss–Bonnet theoremWormholeSpacetimeScalar fieldEinsteinScalar (mathematics)Theoretical physicsGravitationMathematical physicsClassical mechanicsGravitational waveScalar bosonQuantum mechanicsGeometryMathematicsBosonCosmology and Gravitation TheoriesPulsars and Gravitational Waves ResearchBlack Holes and Theoretical Physics