Quantum Monte Carlo simulation of spin-polarized tritium
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hdl:2117/7729
Tipus de documentArticle
Data publicació2009
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Abstract
The ground-state properties of spin-polarized tritium T↓ at zero temperature are obtained by means of diffusion Monte Carlo calculations. Using an accurate ab initio T↓-T↓ interatomic potential we have studied its liquid phase, from the spinodal point until densities above its freezing point. The equilibrium density of the liquid is significantly higher and the equilibrium energy of −3.664(6) K significantly lower than in previous approximate descriptions. The solid phase has also been studied for three lattices up to high pressures and we find that hcp lattice is slightly preferred. The liquid-solid phase transition has been determined using the double-tangent Maxwell construction; at zero temperature, bulk tritium freezes at a pressure of P=9(1) bar.
CitacióBeslic, I.; Vranjes, L.; Boronat, J. Quantum Monte Carlo simulation of spin-polarized tritium. "Physical review B, condensed matter and materials physics", 2009, vol. 80, núm. 13, p. 1-8.
ISSN1098-0121
Versió de l'editorhttp://link.aps.org/doi/10.1103/PhysRevB.80.134506
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