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CERN Lattice Coffee

Non-perturbative decoupling of massive fermions

by Dr Tobias Rindlisbacher (AEC, Institute for Theoretical Physics, University of Bern)

Europe/Zurich
Zoom (CERN)

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CERN

Description

U(2) gauge theory with Nf=24 massless fermions is non-interacting at long distances, i.e. it has an infrared fixed point at vanishing coupling.  With massive fermions the fermions are expected to decouple at energy scales below the fermion mass, and the infrared behavior is that of confining SU(2) pure gauge theory. We demonstrate this behavior non-perturbatively with lattice Monte Carlo simulations by measuring the gradient flow running coupling.

Videoconference
Lattice seminars
Zoom Meeting ID
68098777127
Host
Elena Gianolio
Alternative hosts
Tobias Tsang, Mattia Dallabrida, Andreas Juttner, Simon Kuberski, Matteo Di Carlo, Felix Benjamin Erben, Pascal Pignereau
Passcode
11900596
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