Nonlinear instability and scalar clouds of spherical exotic compact objects in scalar-Gauss-Bonnet theory

• Published in: The European physical journal. C, Particles and fields Vol. 83; no. 10; pp. 950 - 7
• Main Author: Zhang, Shao-Jun
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.10.2023; Springer; Springer Nature B.V; SpringerOpen
• Subjects: Astronomy; Astrophysics and Cosmology; Boundary conditions; Clouds; Dirichlet problem; Elementary Particles; Geometry; Gravitational waves; Hadrons; Heavy Ions; Measurement Science and Instrumentation; Nuclear Energy; Nuclear Physics; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Regular Article - Theoretical Physics; Scalars; Stability; String Theory; Theoretical physics

In this work, we present a new type of scalar clouds supported by spherically symmetric horizonless compact objects in the scalar-Gauss–Bonnet theory. Unlike the previous spontaneous scalarization that is triggered by the tachyonic instability, our scalarization arises from a nonlinear instability t...