3 papers
hep-th2026
The Tensionless Lives of Null Strings
Arjun Bagchi, Aritra Banerjee, Ritankar Chatterjee +1
The tensionless limit probes the very high energy regime of string theory in contrast to the well studied point-particle limit which reduces to Einstein gravity. Tensionless string…
hep-th2025
Scalar fields and 3D Flat Space Cosmologies
Arjun Bagchi, Supratik Biswas, Astha Kakkar +1
Flat Space Cosmologies (FSC) are time-dependent solutions in Einstein gravity in three-dimensional (3D) spacetimes with zero cosmological constant. These are orbifolds of 3D flat s…
hep-th2024
Carroll in Shallow Water
Arjun Bagchi, Aritra Banerjee, Saikat Mondal +1
We discover a surprising connection between Carrollian symmetries and hydrodynamics in the shallow water approximation. Carrollian symmetries arise in the speed of light going to z…