3 papers
hep-th2026
Timelike Entanglement Signatures of Ergodicity and Spectral Chaos
Rathindra Nath Das, Arnab Kundu, Nemai Chandra Sarkar
We investigate timelike entanglement measures derived from the spacetime density kernel in the Rosenzweig-Porter model and show that they sharply diagnose both eigenvector ergodici…
hep-th2025
Temporal correlations and chaos from spacetime kernel
Rathindra Nath Das, Arnab Kundu, Matheus H. Martins Costa +1
We develop a finite-dimensional formulation of the recently introduced notion of ``timelike entanglement'', defined in terms of two-point functions between operators supported on d…
math.AG2025
Isotropic Torsors on Smooth Algebras over Prüfer Rings
Arnab Kundu
The Grothendieck--Serre conjecture predicts that every generically trivial torsor under a reductive group over a regular semilocal ring is itself trivial. Extending the work of Čes…