Confining Strings and the Worldsheet Axion

by Prof. Sergei Dubovsky (New York University)

Tuesday 29 Apr 2025, 15:30 → 17:30 US/Eastern

LSR

I will review the status of confining strings as observed in the lattice simulations of SU(N) Yang—Mills theory. The currently observed states are all well described by the low energy effective theory of a long string consisting of two translational Goldstone bosons ("phonons"), along with a massive pseudoscalar field ("the worldsheet axion") coupled to phonons through a worldsheet  theta-term. Moreover, the leading axion-axion and axion-phonon interactions are well approximated by a so-called TTbar deformation of a free axion.

Zoom:https://bnl.zoomgov.com/j/1617489674?pwd=aTmhSZ1ncKD7wWlqQ2iHfoTniiAlOX.1

 

Meeting ID: 161 748 9674

Passcode: 

893268