Mixed Divergences in Field Theories on Quantum Spacetimes: when UV meets IR

Date(s): Wednesday 29th May 2024 (14:00-15:00)
Contact: Event Convenor Contact: Robert.Laugwitz@nottingham.ac.uk
Description: Speaker's Name: Kilian Hersent
Speaker's Affiliation: Universite Paris-Saclay
Speaker's Research Theme(s): Quantum mathematics,Mathematical Physics
Abstract:
It has been shown that ϕ^4-theory on quantum spacetimes triggers a new phenomenon called UV/IR mixing. In this talk, we study a general framework that tries to grasp new insights on this UV/IR mixing. A tentative unambiguous definition of the mixing will be discussed, as well as the computation of the two point function at one loop. This setting is then applied to some example. A brief introduction of noncommutative field theories will be provided. Finally, the possible physics application of the mixing are discussed, together with the intriguing question it raises: the deformation of the conservation of momenta, the ordering prescription, etc...

Venue: Physics C05

School of Mathematical Sciences

The University of Nottingham
University Park
Nottingham, NG7 2RD

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