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What is the size of the atomic nucleus? This deceivably simple question is difficult to answer. While the electric charge distributions in atomic nuclei were measured accurately already half a century ago, our knowledge of the distribution…

Accurately calibrated effective field theories are used to compute atomic parity non-conserving (APNC) observables. Although accurately calibrated, these effective field theories predict a large spread in the neutron skin of heavy nuclei.…

核理论 · 物理学 2010-12-23 Tapas Sil , M. Centelles , X. Vinas , J. Piekarewicz

Spin-orbit coupling characterizes quantum systems such as atoms, nuclei, hypernuclei, quarkonia, etc., and is essential for understanding their spectroscopic properties. Depending on the system, the effect of spin-orbit coupling on shell…

核理论 · 物理学 2016-06-29 J. -P. Ebran , E. Khan , A. Mutschler , D. Vretenar

We calculate the proton and neutron spin contributions for nuclei using semi-empirical methods, as well as a novel hybrid \emph{ab initio}/semi-empirical method, for interpretation of experimental data. We demonstrate that core-polarisation…

高能物理 - 唯象学 · 物理学 2015-03-10 Y. V. Stadnik , V. V. Flambaum

The impact of spin induced deformation and shape phase transitions on nuclear level density and consequently on neutron emission spectra of the decay of compound nuclear systems 112^Ru to 123^Cs (N = 68 isotones) is investigated in a…

核理论 · 物理学 2019-02-20 Mamta Aggarwal

A new strategy of fitting the coupling constants of the nuclear energy density functional is proposed, which shifts attention from ground-state bulk to single-particle properties. The latter are analyzed in terms of the bare single-particle…

核理论 · 物理学 2008-11-26 M. Zalewski , J. Dobaczewski , W. Satula , T. R. Werner

The treatment of nuclear effects in neutrino-nucleus interactions is one of the main sources of systematic uncertainty for the analysis and interpretation of data of neutrino oscillation experiments. Neutrinos interact with nuclei via…

高能物理 - 唯象学 · 物理学 2020-01-29 Carlotta Giusti , Martin V. Ivanov

Recent experiments and many-body calculations indicate that approximately 20\% of the nucleons in medium and heavy nuclei ($A\geq12$) are part of short-range correlated (SRC) primarily neutron-proton ($np$) pairs. We find that using chiral…

核理论 · 物理学 2019-05-15 G. A. Miller , A. Beck , S. May-Tal Beck , L. B. Weinstein , E. Piasetzky , O. Hen

Forthcoming fixed-target coherent elastic neutrino-nucleus scattering experiments aim at measurements with $\cal{O}(\text{tonne})$-scale detectors and substantially reduced systematic and statistical uncertainties. With such high quality…

高能物理 - 唯象学 · 物理学 2023-08-30 D. Aristizabal Sierra

We investigate the role of spin-dependent nucleon-nucleus interactions in nuclear reactions. To this end, we use neutron spin observables to constrain the dominant central spin-spin form factors and then apply the corresponding like-channel…

核理论 · 物理学 2026-05-28 Kyoungsu Heo , Myung-Ki Cheoun , Kouichi Hagino

The formation of $\alpha$-particle clusters on the surface of heavy nuclei is described in a generalized relativistic mean-field model with explicit cluster degrees of freedom. The effects on the size of the neutron skin of Sn nuclei and…

核理论 · 物理学 2015-06-19 Stefan Typel

In this paper, I have discussed the numerical predictions for the neutron-skin thickness (NST) of various finite nuclei starting from $^{40}$Ca to $^{238}$U using recently developed effective relativistic mean-field models G3 and IOPB-I…

核理论 · 物理学 2019-10-01 Bharat Kumar

Starting with the basic Lagrangian of the Standard Model, the radiative corrections to the neutron beta-decay are acquired. The electroweak interactions are consistently taken into consideration amenably to the Weinberg-Salam theory. The…

高能物理 - 唯象学 · 物理学 2016-09-06 G. G. Bunatian

The kink observed in the nuclear charge radius of Sn isotopes around neutron number $N = 82$ is investigated within the relativistic mean-field (RMF) framework using the NL3$^*$ parameter set. It is shown that the small components of the…

核理论 · 物理学 2026-04-20 S. Marcos , N. Sandulescu , R. Niembro

Background: Nuclear radius is one of the most important and basic properties of atomic nuclei and its evolution is closely related to the saturation of the nuclear density in the internal region but the systematics of the nuclear radii for…

核理论 · 物理学 2020-07-15 W. Horiuchi , T. Inakura

A microscopic theory of spin fluctuations of localized electrons interacting with optically cooled nuclear spin bath has been developed. Since nuclear spin temperature may stay low enough for macroscopically long time, the nuclear spin…

介观与纳米尺度物理 · 物理学 2015-05-05 D. S. Smirnov

We utilize the generalized contact formalism in conjunction with the Woods-Saxon mean-field description of the long-range part of the nuclear wave function to assess the relative prevalence of short-range correlation pairs within atomic…

核理论 · 物理学 2024-07-23 Raz Yankovich , Ehoud Pazy , Nir Barnea

The roles of isospin asymmetry in nuclei and neutron stars are investigated using a range of potential and field-theoretical models of nucleonic matter. The parameters of these models are fixed by fitting the properties of homogeneous bulk…

核理论 · 物理学 2008-11-26 Andrew W. Steiner , Madappa Prakash , James M. Lattimer , Paul J. Ellis

We study the effects of correlations beyond the independent particle model in the evaluation of neutron skins of various neutron-rich doubly magic nuclei. We consider short- and long-range correlations to take into account the presence of…

核理论 · 物理学 2022-07-01 G. Co' , M. Anguiano , A. M. Lallena

Using the two-loop approximation of chiral perturbation theory, we calculate the momentum and density dependent nuclear spin-orbit strength $U_{ls}(p,k_f)$. This quantity is derived from the spin-dependent part of the interaction energy…

核理论 · 物理学 2009-11-07 N. Kaiser