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تسجيل مستخدم جديدCutoff effects in Hartree-Fock calculations at leading order of chiral effective field theory
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We explore the effects on nuclear bulk properties of using regularization cutoffs larger than the nucleon mass within the chiral effective field theory using a power counting that ensures order-by-order renormalization in the two-nucleon system. To do so we calculate ground-state properties of the $^{16}$O nucleus in the Hartree--Fock approach in a basis made up of plane waves confined in a cube. We find a strong sensitivity to the regularization cutoff through the counter-terms in attractive singular partial waves and to the correction for spurious deeply bound states. This questions the possibility of testing in nuclei the renormalization-group invariance of renormalizable potentials from chiral effective field theory at leading order. A possible way out of this problem is proposed.
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