The Inter-Nucleon Up-to-Down Quark Bond and its Implications for Nuclear Binding

Mapping Intimacies ◽

10.5772/intechopen.94377 ◽

2020 ◽

Author(s):

Nancy Lynn Bowen

Keyword(s):

Binding Energy ◽

Nuclear Force ◽

Simple Calculation ◽

Bonding Energy ◽

Potential Significance ◽

Calculated Binding Energy ◽

Nuclear Binding ◽

Down Quark ◽

Significant Phenomenon ◽

Experimental Binding Energy

This paper describes an interesting and potentially significant phenomenon regarding the properties of up and down quarks within the nucleus, specifically how the possible internucleon bonding of these quarks may affect the bonding energy of the nuclear force. A very simple calculation is used, which involves a bond between two internucleon up and down quarks. This simple calculation does not specify the shape or structure for the nucleus, rather this calculation only examines the energy of all possible internucleon up-to-down bonds that may be formed within a quantum nucleus. A comparison of this calculated binding energy is made to the experimental binding energy with remarkably good results. The potential significance and implications of this noteworthy finding are discussed.

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Dibaryons as Carriers of Strong Internucleon Interactions and a Basis for Nuclear Physics Based on QCD

International Journal of Modern Physics A ◽

10.1142/s0217751x06032083 ◽

2006 ◽

Vol 21 (04) ◽

pp. 817-820 ◽

Cited By ~ 1

Author(s):

V. I. Kukulin ◽

V. N. Pomerantsev

Keyword(s):

Binding Energy ◽

Intermediate State ◽

Nuclear Physics ◽

Short Range ◽

Nuclear Force ◽

General Concept ◽

Nuclear Binding Energy ◽

Hadronic Physics ◽

Nuclear Binding

New concept of intermediate- and short-range nuclear force proposed by the authors a few years ago is discussed briefly. The general concept is based on an assumption on generation of the dressed dibaryon in intermediate state in NN interaction. This new mechanism has been shown to lead not only to numerous new predictions in hadronic physics but also should be responsible for a large portion of nuclear binding energy and properties of nuclear wavefunctions at high momenta.

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Understanding Nuclear Binding Energy with Strong and Electroweak Coupling Constants

10.20944/preprints201710.0075.v1 ◽

2017 ◽

Author(s):

U.V. Satya Seshavatharam ◽

S. Lakshminarayana

Keyword(s):

Binding Energy ◽

Coupling Constants ◽

Nuclear Binding Energy ◽

Quark Masses ◽

Nuclear Binding ◽

Down Quark ◽

The Mean ◽

Energy Coefficient ◽

Stability Line

At nuclear scale, we present three heuristic relations pertaining to strong and electroweak coupling constants. With these relations, close to beta stability line, it is possible to study nuclear binding energy with a single energy coefficient of magnitude ( 1 α s )[ e 2 4π ε 0 R 0 ]≈10.0 MeV. With reference to up and down quark masses, it is also possible to interpret that, nuclear binding energy is proportional to the mean mass of [ ( 2 m u + m d ) and ( m u +2 m d ) ]≈10.0 MeV.

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Studies of Conformational Changes of Tubulin Induced by Interaction with Kinesin Using Atomistic Molecular Dynamics Simulations

International Journal of Molecular Sciences ◽

10.3390/ijms22136709 ◽

2021 ◽

Vol 22 (13) ◽

pp. 6709

Author(s):

Xiao-Xuan Shi ◽

Peng-Ye Wang ◽

Hong Chen ◽

Ping Xie

Keyword(s):

Molecular Dynamics ◽

High Resolution ◽

Binding Energy ◽

Molecular Dynamics Simulations ◽

Conformational Changes ◽

Weak Interactions ◽

Molecular Motor ◽

Structural Data ◽

Calculated Binding Energy ◽

Dynamics Simulations

The transition between strong and weak interactions of the kinesin head with the microtubule, which is regulated by the change of the nucleotide state of the head, is indispensable for the processive motion of the kinesin molecular motor on the microtubule. Here, using all-atom molecular dynamics simulations, the interactions between the kinesin head and tubulin are studied on the basis of the available high-resolution structural data. We found that the strong interaction can induce rapid large conformational changes of the tubulin, whereas the weak interaction cannot. Furthermore, we found that the large conformational changes of the tubulin have a significant effect on the interaction of the tubulin with the head in the weak-microtubule-binding ADP state. The calculated binding energy of the ADP-bound head to the tubulin with the large conformational changes is only about half that of the tubulin without the conformational changes.

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