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Lattice QCD at finite density suffers from a severe sign problem, which hasso far prohibited simulations of the cold and dense regime. Here we study theonset of nuclear matter employing a three-dimensional effective theory derivedby combined strong coupling and hopping expansions, which is valid for heavybut dynamical quarks and has a mild sign problem only. Its numericalevaluations agree between a standard Metropolis and complex Langevin algorithm,where the latter is free of the sign problem. Our continuum extrapolated dataclearly show a first order phase transition building up at $\mu_B \approx m_B$as the temperature approaches zero. An excellent description of the data isachieved by an analytic solution in the strong coupling limit.

Onset Transition to Cold Nuclear Matter from Lattice QCD with Heavy Quarks