A novel nuclear dependence of nucleon–nucleon short-range correlations

Dai, Hongkai; Wang, Rong; Huang, Yin; Chen, Xurong

doi:10.1016/j.physletb.2017.04.015

“…The most important ones are the nuclear interaction energy and the Coulomb energy due to the Coulomb repulsion between the protons. According to Weizsäcker semiempirical mass formula (SEMF), the binding energy equation (Dai et al 2017;Heyde 2004) is written as,…”

Section: Methodsmentioning

confidence: 99%

Advances in Phytochemistry, Textile and Renewable Energy Research for Industrial Growth

Nzila¹,

Oluoch²,

Kiprop³

et al. 2022

3

0

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This book is an outcome from an international conference by the Africa Centre of Excellence in Phytochemicals, Textile and Renewable Energy (ACEII-PTRE); a World Bank funded project under the auspices of the Africa Centers of Excellence (ACE II) that seeks to contribute to addressing critical gaps in technical, scientific and research skills. The ACEII-PTRE aims at providing high quality training and research in the Eastern and Southern African region in Phytochemicals, Textile and Renewable energy. It seeks to build regional specialization by concentrating on postgraduate students and faculty, generating knowledge, developing skills to support industry and private sector demand, and to generate research for the betterment of the community and the region at large.Our aim in writing this book is to prepare a text which is comprehensive and a stimulating discourse on research for sustainable industrial growth. The context of the book is situated on the premise that the economic growth and industrial investments have boosted demand for greater technological skills and applied research in some of the priority economic sectors like Manufacturing, Agriculture, Energy, Health and others in many developing economies. Prior to Covid-19, many regions of the world experienced remarkable economic growth especially in the last decade. Outstanding skills and continuous vigorous research are therefore needed, particularly in Science, Technology, Engineering and Mathematics (STEM) so as to sustain the economic growth and transformation. However, there is a new global paradigm shift that seeks to consider STEAM instead of STEM -by adding the 'Arts' to the STEM since Arts play an important role in areas related to STEM. Notwithstanding, ethics in research is also a key area of focus in STEAM.The theme of the book: "Advancing Science, Technology and Innovation for Industrial Growth" and the thematic areas of Phytochemistry, Progressive Textiles, Transformative Industrialization, Renewable and Alternative Energy are relevant in realizing Sustainable Development Goals (SDGs), which is a universal call of action to end poverty, protect the planet and ensure people enjoy peace and prosperity by the year 2030. A better world requires an interdisciplinary approach, hence the incorporation of social science perspectives rendering this book a high-level academic discourse with cross-cutting disciplines.Advancing research and well-integrated national development strategies can help raise productivity, improve industrial competitiveness, support faster growth, create jobs and promote resilient communities. Therefore, leveraging on the research arena to advance industrial growth is a central goal of this book. The book captures various knowledge creation and development aspects through the presentation of case specific, basic and applied research and innovation from the perspective of multiple contributors. The text is presented in 42 short chapters which are organized in three sections. Section 1 of the book focuses on advances in Science, T...

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“…1 are the R max -ν c (upper panel) and M max NS -Γ c (lower panel) correlations by using 87 phenomenological and 17 extra microscopic NS EOSs with and/or without considering hadron-quark phase transitions and hyperons by solving numerically the original TOV equations. The phenomenological EOSs are from three rather different classes of EOS models (Iida & Sato 1997): the covariant relativistic mean-field (RMF) models (Serot & Walecka 1986), the non-relativistic energy density functionals (EDF) of the Gogny-like type (Cai & Li 2022) as well as the conventional Skyrme-type (Vautherin & Brink 1972;Stone & Reinhard 2007;Zhang & Chen 2016). Within each EOS class, different EOS models are generated by perturbing the model coupling constants within their empirical uncertain ranges.…”

Section: Validations Of Ns Radius/mass Scalings By Solving the Origin...mentioning

confidence: 99%

Core States of Neutron Stars from Anatomizing Their Scaled Structure Equations

Cai¹,

Li

²

,

Zhang³

2023

ApJ

9

0

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Given an Equation of State (EOS) for neutron star (NS) matter, there is a unique mass–radius sequence characterized by a maximum mass M NS max at radius R max. We first show analytically that the M NS max and R max scale linearly with two different combinations of the NS central pressure P c and energy density ε c, by dissecting perturbatively the dimensionless Tolman–Oppenheimer–Volkoff (TOV) equations governing NS internal variables. The scaling relations are then verified via 87 widely used and rather diverse phenomenological as well as 17 microscopic NS EOSs with/without considering hadron–quark phase transitions and hyperons, by solving numerically the original TOV equations. The EOS of the densest NS matter allowed before it collapses into a black hole is then obtained. Using the universal M NS max and R max scalings and Neutron Star Interior Composition Explorer and XMM-Newton mass–radius observational data for PSR J0740+6620, a very narrow constraining band on the NS central EOS is extracted directly from the data for the first time, without using any specific input EOS model.

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“…In recent two years, the study of nuclear short-range correlations attracts much attention [1][2][3][4][5][6]. It has been shown that about 20% nucleons in nuclei are correlated [7][8][9].…”

mentioning

confidence: 99%

Probing proton transition momentum in neutron-rich matter

Yong

¹

2018

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Around the nuclear Fermi momentum, there is a transition of nucleon momentum distribution n(k) in nuclear matter, i.e., from a constant to the $1/k^{4}$ nucleon momentum distribution. While nowadays the transition momentum of minority in asymmetric matter is rarely studied and thus undetermined. In the framework of the IBUU transport model, proton transition momentum in nuclei is first studied. It is found that the transition momentum of proton is sensitive to the $\pi^{-}/\pi^{+}$ ratio as well as the energetic photon production in neutron-rich nuclear reaction. This result may push the study of how the proton momentum is distributed in neutron-rich matter forward and help us to better understand the dynamics of both neutron-rich nuclear reactions and neutron stars.Comment: 5 pages, 5 figure

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A novel nuclear dependence of nucleon–nucleon short-range correlations

Cited by 6 publications

References 60 publications

Advances in Phytochemistry, Textile and Renewable Energy Research for Industrial Growth

Advances in Phytochemistry, Textile and Renewable Energy Research for Industrial Growth

Core States of Neutron Stars from Anatomizing Their Scaled Structure Equations

Probing proton transition momentum in neutron-rich matter

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