Finite Density Simulations with Canonical Ensemble

Understand

QCD at non-zero baryon density is expected to have a critical point where the zero-density cross-over turns into a first order phase transition.

• To identify this point we scan the density-temperature space using a canonical ensemble method.
• For a given temperature, we plot the chemical potential as a function of density looking for an "S-shape" as a signal for a first order transition.
• We carried out simulations using Wilson fermions with $m_\pi \approx 1{GeV}$ on $6^3\times 4$ lattices.