Chennai Mathematical Institute

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2.00 pm, Lecture Hall 802
Coherent States in QCD
P.V. Athira
Chennai Mathematical Institute.
26-04-19

Abstract

There has been a lot of work related to Ward Identities of Asymptotic Symmetries in QED and Gravity on formal S-matrix which are IR divergent in general. Faddeev and Kulish have developed a formalism to construct IR finite S matrix by working with Asymptotic states (which are states dressed with a cloud of soft particles) instead of Fock states. Recently there has been a series of papers studying the Ward Identities on these asymptotic states. We discuss this in the context of Gravity as well as QCD.