1212.3189 (V. Azcoiti et al.)

Geometric representation of the 2D Antiferromagnetic Ising Model with
topological term at θ=π    [PDF]

V. Azcoiti, G. Cortese, E. Follana, M. Giordano

We study the two-dimensional Antiferromagnetic Ising Model with an imaginary magnetic field i\theta at \theta=\pi. We use a new geometric algorithm which does not present a sign problem. This allows us to perform efficient numerical simulations of this system.

View original: http://arxiv.org/abs/1212.3189