Local chiral effective field theory interactions and quantum Monte Carlo applications

被引：190

作者：

Gezerlis, A. ^{[1
]}

Tews, I. ^{[2
,3
]}

Epelbaum, E. ^{[4
]}

Freunek, M. ^{[4
]}

Gandolfi, S. ^{[5
]}

Hebeler, K. ^{[2
,3
]}

Nogga, A. ^{[6
,7
]}

Schwenk, A. ^{[2
,3
]}

机构：

[1] Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada

[2] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany

[3] GSI Helmholtzzentrum Schwerionenforsch GmbH, ExtreMe Matter Inst EMMI, D-64291 Darmstadt, Germany

[4] Ruhr Univ Bochum, Inst Theoret Phys 2, D-44780 Bochum, Germany

[5] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

[6] Forschungszentrum Julich, Inst Adv Simulat, Inst Kernphys, D-52425 Julich, Germany

[7] Forschungszentrum Julich, Julich Ctr Hadron Phys, D-52425 Julich, Germany

来源：

PHYSICAL REVIEW C | 2014年 / 90卷 / 05期

基金：

加拿大自然科学与工程研究理事会; 欧洲研究理事会;

关键词：

ASYMPTOTIC D-STATE; NUCLEON-SCATTERING; DEUTERON; FORCES; CONVERGENCE; EXPANSION; EXCHANGE;

D O I：

10.1103/PhysRevC.90.054323

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We present details of the derivation of local chiral effective field theory interactions to next-to-next-to-leading order and show results for nucleon-nucleon phase shifts and deuteron properties for these potentials. We then perform systematic auxiliary-field diffusion Monte Carlo calculations for neutron matter based on the developed local chiral potentials at different orders. This includes studies of the effects of the spectral-function regularization and of the local regulators. For all orders, we compare the quantum Monte Carlo results with perturbative many-body calculations and find excellent agreement for low cutoffs.

引用

页数：16

共 77 条

[1] Ab initio no core shell model [J].