21 citations · 50 across the 6 of their papers we have counts for
4 papers · 1 filter
Adiabatic inspirals under electromagnetic radiation reaction on Kerr spacetime
Ethan J German, Kevin Cunningham, Visakan Balakumar +2
A compact body in orbit about a black hole loses orbital energy and angular momentum through radiation-reaction processes, inspiralling towards the black hole until a final plunge.…
Quantum superradiance on static black hole space-times
Visakan Balakumar, Rafael P. Bernar, Luis C. B. Crispino +1
We study the quantum analogue of the classical process of superradiance for a massless charged scalar field on a static charged black hole space-time. We show that an "in" vacuum s…
Hadamard parametrix of the Feynman Green's function of a five-dimensional charged scalar field
Visakan Balakumar, Elizabeth Winstanley
The Hadamard parametrix is a representation of the short-distance singularity structure of the Feynman Green's function for a quantum field on a curved space-time background. Subtr…
Hadamard renormalization for a charged scalar field
Visakan Balakumar, Elizabeth Winstanley
The Hadamard representation of the Green's function of a quantum field on a curved space-time is a powerful tool for computations of renormalized expectation values. We study the H…