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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…
cond-mat.str-el1998
Phase separation in the 2D Hubbard model: a challenging application of fixed-node QMC
Giovanni B. Bachelet, Andrea C. Cosentini
We discuss the main aspects of the fixed-node quantum Monte Carlo method for lattice fermions and its recent application to the problem of phase separation in the 2D Hubbard model,…