Work

Scalar waves in a topological star spacetime: Self-force and radiative losses

Year: 2025

Type: article

Abstract: Topological stars are solutions of Einstein-Maxwell theory in $D=5$. For specific choices of the parameters, the solution is capped and thus smooth and horizonless and can be reduced to $D=4$ along a circle. We study the energy and angular momentum radiated by a scalar particle moving on a circular orbit in the $D=4$ noncompact directions, extending a previous study [Phys. Rev. D 110, 084077 (2024)]. We also discuss self-force effects on the motion of a spinless probe.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.111.044017

Authors: Massimo Bianchi, Donato Bini, Giorgio Di Russo

Institutions: University of Rome Tor Vergata, Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata, Istituto per le Applicazioni del Calcolo Mauro Picone

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Istituto Nazionale di Alta Matematica "Francesco Severi", Ministero dell’Istruzione, dell’Università e della Ricerca, Gruppo Nazionale per la Fisica Matematica, Instituto Nazionale di Fisica Nucleare

Award: G7762532878