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gr-qc2025
Covariant Carrollian Electric and Magnetic Limits of General Relativity
Tanmay Patil, S. Shankaranarayanan
The Carrollian limit () of General Relativity provides the geometric language for describing null hypersurfaces, such as black hole event horizons and null infinity. Motiv…
gr-qc2025
Axial quasi-normal modes of slowly rotating black holes in dynamical Chern-Simons gravity to second-order in spin and coupling
Tharaka Alapati, S. Shankaranarayanan
We compute the quasi-normal mode (QNM) frequencies of slowly rotating black holes in dynamical Chern-Simons (dCS) gravity, including corrections up to second order in the black hol…
gr-qc2025
Unitary quantum matter-bounce in a universe with a positive cosmological constant
Harkirat Singh Sahota, Dipayan Mukherjee, S. Shankaranarayanan
We analyze the Wheeler-DeWitt quantization of a spatially flat Friedmann-Lemaître-Robertson-Walker universe containing pressureless dust and a positive cosmological constant ($Λ> 0…