Continuous Time Monte Carlo for Lattice QCD in the Strong Coupling Limit

Understand

We present results for lattice QCD in the limit of infinite gauge coupling, obtained from a worm-type Monte Carlo algorithm on a discrete spatial lattice but with continuous Euclidean time.

• This is obtained by sending both the anisotropy parameter gamma^2 \sim a/a_t and the number of time-slices N_\tau to infinity, keeping the ratio \gamma^2/N_\tau \sim aT fixed.
• The obvious gain is that no continuum extrapolation N_\tau -> \infty has to be carried out.
• Moreover, the algorithm is faster and the sign problem disappears.