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cond-mat2001
Derivatives of the fixed-node energy
S. De Palo, S. Moroni, S. Baroni
We present quantum Monte Carlo calculations of total energy derivatives, consistently performed in the fixed-node approximation. Contributions from nodal displacements, neglected o…
cond-mat1998
Reptation Quantum Monte Carlo
S. Baroni, S. Moroni
We present an elementary and self-contained account of the analogies existing between classical diffusion and the imaginary-time evolution of quantum systems. These analogies are u…