Journal
PHYSICAL REVIEW LETTERS
Volume 112, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.112.076403
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Funding
- U.S. Department of Energy [DE-SC0002139]
- Department of Energy Office of Fusion Energy Sciences (FES)
- U.S. Department of Energy (DOE) [DE-SC0002139] Funding Source: U.S. Department of Energy (DOE)
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An accurate analytical parametrization for the exchange-correlation free energy of the homogeneous electron gas, including interpolation for partial spin polarization, is derived via thermodynamic analysis of recent restricted path integral Monte Carlo (RPIMC) data. This parametrization constitutes the local spin density approximation (LSDA) for the exchange-correlation functional in density functional theory. The new finite-temperature LSDA reproduces the RPIMC data well, satisfies the correct high-density and low- and high-T asymptotic limits, and is well behaved beyond the range of the RPIMC data, suggestive of broad utility.
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