Speaker
Davide Vadacchino
(University of Plymouth)
Description
In this talk we will report on a study of the θ-dependence of the string tension and of the mass gap of four-dimensional SU(N) Yang-Mills theories. The spectrum at N=3 and N=6 was obtained on the lattice at various imaginary values of the θ parameter, using Parallel Tempering on Boundary Conditions to avoid topological freezing at fine lattice spacings. The coefficient of the O(θ^2) term in the Taylor expansion of the spectrum around θ=0 could be obtained in the continuum limit for N=3, and on two fairly fine lattices for N=6.
Primary authors
Claudio Bonanno
(IFT UAM/CSIC Madrid)
Claudio Bonati
(Università di Pisa)
Davide Vadacchino
(University of Plymouth)
Mr
Mario Papace
(University of Wuppertal)
