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Ratul Mahanta Colloquium

Fri. Mar. 22 12:30 PM - Fri. Mar. 22 01:20 PM
Location: 3M69 & via Zoom

Postdoc, University of Winnipeg, Department of Physics

Playing with QFT Diagrams

Quantum field theories (QFTs) have been remarkably successful in describing interactions observed in nature. Feynman diagrams are central to such analyses. Their (infinite) sum computes scattering (probability) amplitudes. This colloquium aims to discuss some of the open questions concerning Feynman diagrams, presenting key concepts in an elementary manner. Feynman diagrams will be examined as analytic functions of momenta of the interacting (incoming and outgoing) states. The discussion will be general, and will find applications to both local and nonlocal QFTs (e.g. those involving strings).

BIO: I received my BSc (Hons.) in Physics from the University of Calcutta in 2014, then pursued an Integrated MSc-PhD at the Harish-Chandra Research Institute, completing my PhD in Physics in 2021. Following this, I worked as a postdoctoral fellow at Istituto Nazionale di Fisica Nucleare (INFN) Bologna for two years before joining my current postdoc position at the University of Winnipeg in January 2024. Broadly my research revolves around addressing questions in topics such as String Theory and Conformal Field Theory, ranging from mathematical foundations to phenomenological applications.

For a Zoom link to this talk, please email e.mcdonough@uwinnipeg.ca.