4 papers
EFT Perspective On de-Sitter S-Matrix
Sayantan Choudhury
Non-perturbative limitations on low-energy effective field theories (EFTs) based on the characteristics of high-energy theory are provided by the analyticity of the flat-space vers…
Mass gap in non-perturbative quadratic gravity via Dyson-Schwinger
Sayantan Choudhury, Marco Frasca, Anish Ghoshal
We apply in a simple model derived from quadratic gravity the technique of Dyson-Schwinger equations to solve for its corresponding quantum theory. Particularly, we…
Next-Generation Iterative Algorithms for Large-Scale Min-Max Optimization: Design and Analysis
Sayantan Choudhury
This thesis investigates the design of algorithms for solving min-max optimization problems, which form the mathematical foundation of many modern applications in machine learning,…
Notes On de-Sitter Mellin Barnes Amplitudes
Sayantan Choudhury
In this paper, we create a Mellin space method for boundary correlation functions in de Sitter (dS) and anti-de Sitter (AdS) spaces. We demonstrate that the analytic continuation b…