This week

Tuesday

Making sense of a non-Hermitian Lagrangian in Field Theory

Regular Seminar Jean Alexandre (King's)

at:
15:00 City U.
room B104
abstract:

Motivated by extending the parameter space of the Standard Model of Particle Physics, I will describe how to understand the effects of an imaginary mixing mass term in a non-Hermitian but PT-symmetric extension of scalar QED. The classical theory is already not trivial, and requires a new interpretation of the equations of motion, Noether's theorem and gauge invariance. The path integral can be defined with appropriate field variables, and a consistent picture emerges, opening the way for potential alternative descriptions of the Higgs sector.

TBA

Regular Seminar Lorenzo Bianchi ()

at:
13:30 IC
room H503
abstract:

Wednesday

TBA

Regular Seminar Chiara Toldo (Ecole Polytechnique)

at:
13:00 IC
room H503
abstract:

5d Gauge Theories, SCFTs and Dualities

Polygon Seminar Sakura Schafer-Nameki (Oxford)

at:
15:00 City U.
room B104
abstract:

I will discuss recent developments in constructions of 5d N=1 supersymmetric gauge theories and their UV fixed points, which are strongly-coupled SCFTs. The lectures will start with some background on 5d gauge theories, their Coulomb branch and effective action, as well as their constructions in M-theory on non-compact Calabi-Yau threefolds. In the second lecture I will discuss some new developments of various groups in the past year.

Thursday

Conformal symmetry in strong interactions

Regular Seminar Vladimir Braun (Universitaet Regensburg)

at:
14:00 QMW
room G O Jones 610
abstract:

Description:I will give a review of recent applications of conformal symmetry to perturbative calculations in Quantum Chromodynamics (QCD) by nexploiting the connection of physical theory to QCD at non-intege number of space-time dimensions at the critical point.