Computing theta-dependent mass spectrum of the 2-flavor Schwinger model in the Hamiltonian formalism

Akira Matsumoto, Etsuko Itou, Yuya Tanizaki

We compute the $\theta$-dependent mass spectrum of the 2-flavor Schwingr model using the tensor network (DMRG) in the Hamiltonian formalism. The pion and the sigma meson are identified…