3 papers
hep-th2026
A unified expansion of Einstein's gravity
Arkachur Bhattacharya, Pushkar Soni
Non-Lorentzian theories of gravity, most common of which are Galilean and Carrollian gravity, arise from General relativity under suitable scalings. General relativity can be obtai…
hep-th2026
Black hole Near Horizons through the Looking Glass
Arjun Bagchi, Arkachur Bhattacharya, Sharang Rajesh Iyer +1
We show that the near horizon of a generic non-extremal black hole (BH) can be understood in terms of a Carrollian geometry with two null directions, also called a String-Carroll (…
hep-th2025
Strings near BTZ black holes: A Carrollian Chronicle
Aritra Banerjee, Arkachur Bhattacharya, Sharang Rajesh Iyer +2
The BTZ black hole provides a tractable (2+1)-dimensional example for investigating string dynamics in curved spacetime. However, a systematic and robust analysis of the solution s…