5 papers · 1 filter
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…
Ambiguity problem of the Bootstrap Method in Quantum Mechanics
Takeshi Morita, Worapat Piensuk, Pushkar Soni
The bootstrap method for quantum mechanics is a powerful tool for computing the energy eigenvalues of a Hamiltonian. However, we point out that this method suffers from an ambiguit…
Carroll hydrodynamics with spin
Ashish Shukla, Rajeev Singh, Pushkar Soni
We formulate Carroll hydrodynamics with the inclusion of a spin current. Our strategy relies on the fact that the limit of relativistic hydrodynamics yields the equations…
Hydrodynamics in the Carrollian regime
Kedar S. Kolekar, Taniya Mandal, Ashish Shukla +1
Carroll hydrodynamics arises in the limit of relativistic hydrodynamics. Instances of its relevance include the Bjorken and Gubser flow models of heavy-ion collisions, whe…
Anatomy of Null Contractions
Arjun Bagchi, Nachiketh M, Pushkar Soni
We introduce null contractions of the Poincare and relativistic conformal algebras. The longitudinal null contraction involves writing the algebra in lightcone coordinates and cont…