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gr-qc2020★ 21 cited
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…
gr-qc2020
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…