@article{ec2a0e35d1c143339fe1dedc89a4dee1,
title = "From atomic helium to nuclear matter",
abstract = "Differences between the quasiparticle and the bare particle, as constituents of Fermi systems, mainly result from the effects of correlations. Comparative studies performed in liquid helium and indicating interesting similarities in the single particle properties of Bose and Fermi liquids will be discussed, also in connection with the theoretical and experimental quasihole strength in nuclei. A new Quantum Monte Carlo method for nuclear systems is also outlined.",
author = "S. Fantoni and S. Moroni and Kevin Schmidt",
note = "Funding Information: matter (M = 6 in eq.(1)), which contains ~i{"} ~j and tensor forces. Calculations with 38 and 54 neutrons in a periodical box have been performed, and they show the feasibility of calculating reasonable sized systems and the stabilityo f the proposed algorithm. The results obtained for the energy per particlei n a density region ranging from 0.1 to 0.3fro -3 are lower than the best variational estimates\[19\o]f ~ 2MeV. Such new Quantum Monte Carlo method can allow fixed node calculationso f the ground states of many nuclear systems with realisticp otentials, including deformed nuclei. It is interesting to note that methods similar to NQMC should allow for the inclusion of some dynamical meson degrees of freedom. Actually, the Hubbard-Stratonovich method is identical to a particular formalism one would get by including, in Born-Oppenheimer approximation, a very fast meson degree of freedom, coupled to the nucleons. We would like to thank Adclchi Fabrocini for useful discussions. Portions of this work were supported by MURST-National Research Projects, and NSF grant CHE94-07309.",
year = "1999",
month = mar,
day = "29",
doi = "10.1016/S0375-9474(99)00032-9",
language = "English (US)",
volume = "649",
pages = "14--20",
journal = "Nuclear Physics A",
issn = "0375-9474",
publisher = "Elsevier",
number = "1-4",
}