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Path integral Monte Carlo calculations of4He and6Li (1985)

Alhassid, Y. ; Maddison, G. ; Langanke, K. ; [weitere]

Springer

The European physical journal 321 (1985), S. 677-685

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Details

ISSN: 1434-601X

Schlagwort(e): 2.60+y ; 21.40.+d

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract We have performed Monte Carlo calculations to estimate the exact energies of model problems for4He and theL=0,1, and 2 states of6Li. Using a Feynman path-integral expression for the imaginary-time evolution operator, we recast the ground state energy as a sum over histories, which are then sampled stochastically. Use of a trial wave function dramatically improves the efficiency of the Monte Carlo method. For a state-independent Malfliet-Tjon potential, together with the Coulomb interaction, we find a ground state energy of −28.00+0.20 MeV for4He, and a degeneracy of theL=0,1, and 2 states in6Li at about −59.65+-0.50 MeV. Density distributions for these nuclei are also calculated.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01432445

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