Speaker
Yusuke Yoshimura
(University of Tsukuba)
Description
We make an analysis of the two-dimensional U(1) lattice gauge theory with a θ term by using the tensor renormalization group.
Our numerical result for the free energy shows good consistency with the exact one at finite coupling constant. The topological charge density generates a finite gap at θ=π toward the thermodynamic limit.
In addition finite size scaling analysis of the topological susceptibility up to V=1024×1024 allows us to determine the phase transition at θ=π is the first order.
Primary authors
Yoshinobu Kuramashi
(University of Tsukuba)
Yusuke Yoshimura
(University of Tsukuba)
