دورية أكاديمية
Ground-state properties of 4He and 16O extrapolated from lattice QCD with pionless EFT
العنوان: | Ground-state properties of 4He and 16O extrapolated from lattice QCD with pionless EFT |
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المؤلفون: | L. Contessi, A. Lovato, F. Pederiva, A. Roggero, J. Kirscher, U. van Kolck |
المصدر: | Physics Letters B, Vol 772, Iss C, Pp 839-848 (2017) |
بيانات النشر: | Elsevier, 2017. |
سنة النشر: | 2017 |
المجموعة: | LCC:Physics |
مصطلحات موضوعية: | Physics, QC1-999 |
الوصف: | We extend the prediction range of Pionless Effective Field Theory with an analysis of the ground state of 16O in leading order. To renormalize the theory, we use as input both experimental data and lattice QCD predictions of nuclear observables, which probe the sensitivity of nuclei to increased quark masses. The nuclear many-body Schrödinger equation is solved with the Auxiliary Field Diffusion Monte Carlo method. For the first time in a nuclear quantum Monte Carlo calculation, a linear optimization procedure, which allows us to devise an accurate trial wave function with a large number of variational parameters, is adopted. The method yields a binding energy of 4He which is in good agreement with experiment at physical pion mass and with lattice calculations at larger pion masses. At leading order we do not find any evidence of a 16O state which is stable against breakup into four 4He, although higher-order terms could bind 16O. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 0370-2693 1873-2445 |
Relation: | http://www.sciencedirect.com/science/article/pii/S0370269317306044; https://doaj.org/toc/0370-2693; https://doaj.org/toc/1873-2445 |
DOI: | 10.1016/j.physletb.2017.07.048 |
URL الوصول: | https://doaj.org/article/ab33b58243914891a246a08e4fb8d811 |
رقم الأكسشن: | edsdoj.b33b58243914891a246a08e4fb8d811 |
قاعدة البيانات: | Directory of Open Access Journals |
تدمد: | 03702693 18732445 |
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DOI: | 10.1016/j.physletb.2017.07.048 |