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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-mat.str-el2001
Two-dimensional electron gas: correlation energy versus density and spin polarization
Paola Gori-Giorgi, Claudio Attaccalite, Saverio Moroni +1
We propose a simple analytic representation of the correlation energy for the two-dimensional electron gas, as a function of the density and the spin polarization. This new paramet…