New Way to Compute Excited States and Thermodynamics: Monte Carlo   Hamiltonian
  We present a new way to compute thermodynamical observables on the lattice. We compute excited states and thermodynamical functions in the scalar model via the Monte Carlo Hamiltonian technique. We find agreement with standard Lagrangian lattice calculations, but observe lesser fluctuations in the results from the MC Hamiltonian. 
H. Kr\"oger, X.Q. Luo, K.J.M. Moriarty