Superradiance in non-axisymmetric analogue black holes

• Grant number: 25/17924-8
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: February 01, 2026
• End date: January 31, 2027
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: Maurício Richartz
• Grantee: Lucas Tobias de Paula
• Supervisor: Silke Weinfurtner
• Host Institution: Centro de Matemática, Computação e Cognição (CMCC). Universidade Federal do ABC (UFABC). Santo André , SP, Brazil
• Institution abroad: University of Nottingham, University Park, England
• Associated to the scholarship: 23/07013-2 - Analogue models in (1+2) and (1+3) dimensions, BP.DR

Abstract

The theory of General Relativity predicts a variety of phenomena in the vicinity of blackholes, ranging from quantum effects such as Hawking radiation to classical processes likequasinormal decay and superradiant scattering by rotating black holes. However, the ex-treme and remote nature of these objects makes direct experimental investigation of sucheffects practically unfeasible. Analogue models of gravity offer an alternative by reproducingkey kinematic features of black hole spacetimes in laboratory systems, enabling controlledstudies of their associated physical processes. This project is dedicated to the study of su-perradiant scattering in non-axisymmetric analogue systems, with the goal of understandinghow deviations from the axisymmetric case affect wave amplification and energy-extractionmechanisms. While superradiance is well understood in idealized, axisymmetric setups,little is known about its behavior under symmetry-breaking conditions. Analogue modelsprovide not only a simplified theoretical framework but also a feasible platform for futureexperimental realization.