ITMP Seminar "Colour-kinematic duality, double copy and homotopy algebras"

Dear Colleagues,

We are pleased to announce that the next ITMP seminar will be held on Wednesday, Nov 17, at 18:00 (Moscow time). It will be arranged via zoom.

Speaker: Dr. Tommaso Macrelli, Surrey University

Title: Colour-kinematic duality, double copy and homotopy algebras

Abstract: While colour-kinematic duality and double copy are a well established paradigm at tree level, their loop level generalisation remained for a long time an unsolved problem. Lifting the on-shell, scattering amplitude-based description to an action-based approach, we show that a theory that exhibits tree level colour-kinematic duality can be reformulated in a way such that its loop integrands manifest colour-kinematic duality.

After a review of Batalin-Vilkovisky formalism and homotopy algebras, we discuss how these structures emerge in quantum field theory and gravity. We focus then on the application of these sophisticated mathematical tools to colour-kinematic duality and double copy, introducing an adequate notion of colour-kinematic factorisation.

This talk is based on arXiv:2007.13803 [hep-th], arXiv:2102.11390 [hep-th], arXiv:2108.03030 [hep-th].

If you want to join the seminar please register here before 14:00, November 17 here.

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