Recent Progress In Many-Body Theories: Proceedings of the by Jordi Boronat, Ferran Mazzanti, Gregory Astrakharchick

By Jordi Boronat, Ferran Mazzanti, Gregory Astrakharchick

This quantity comprises the most contributions to the 14th foreign convention on fresh growth in Many-Body Theories (RPMBT14) held on the Technical collage of Catalonia, Spain, in July 2007. This convention, which was once first held in Trieste in 1979, is dedicated to new advancements within the box of many-body theories, that are being utilized and constructed in a quickly growing to be variety of fields. The emphasis is twofold: development within the technical features of microscopic theories and a evaluation of modern functions of many-body thoughts. as well as the extra conventional issues, resembling nuclear physics and quantum drinks, the current quantity additionally comprises the latest effects on atomic physics, chilly Bose and Fermi gases, part transitions and quantum details. additionally, the amount comprises the lectures of the winners of the 2007 Feenberg Medal and 2007 Kuemmel Award, in addition to their laudatios.

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Extra info for Recent Progress In Many-Body Theories: Proceedings of the 14th International Conference Barcelona, Spain 16 - 20 July 2007 (Advances in Quantum Many-Body Theory)

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Krotscheck, Layer- and bulk-roton excitations of 4 He in porous media, Phys. Rev. Lett. 91, 225302 (2003). 9. E. Krotscheck and M. Saarela, Theory of 3 He-4 He mixtures: Energetics, structure and stability, Phys. Rep. 232, 1-86 (1993). 10. E. Krotscheck, M. Saarela, K. Sch¨ orkhuber, and R. Zillich, Concentration Dependence of the Effective Mass of 3 He Atoms in 3 He-4 He Mixtures, Phys. Rev. Lett. 80, 4709 (1998). 11. M. Aichinger and E. Krotscheck, A fast configuration space method for solving local Kohn–Sham equations, Computational Materials Sciences 34, 188 (2005).

Discrepancies have been found with previous Fermi Hyper Netted Chain and Brueckner–Hartree–Fock calculations. Most interestingly, the nuclear matter calculations strongly indicate that many-body forces are very important even at experimental equilibrium density. Preliminary results for pure neutron matter in both normal and BCS phase with Argonne v8 plus Urbana IX three-nucleon interaction are also presented. Keywords: Quantum Monte Carlo; nuclear and neutron matter; medium heavy nuclei. 1. Introduction The improved accuracy of experimental data on nuclei, together with a rediscovered role of nuclear matter properties in the understanding of nuclear structure1–4 and several phenomena of astrophysical interest5–8 asks for deeper and deeper investigation of the nuclear many-body problem.

One can see a significant lowering of the energy per particle going from the CP to the FP constraint. 3 -3 ρ [fm ] Fig. 2. Comparison of the CP–AFDMC and FP–AFDMC results for normal PNM with and without Urbana IX three-nucleon force. The results shown are all obtained with 66 neutrons. Finite size effects are not included. in much better agreement with the previous calculations. 66 still shows that FHNC/SOC leads to a too soft EOS. The differences are larger when three-body interaction is switched on, particularly at high density.

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