Uniqueness of the relativistic nucleon state

1988 ◽  
Vol 37 (3) ◽  
pp. 768-777 ◽  
Author(s):  
Zbigniew Dziembowski
Keyword(s):  
Nucleon State

scholarly journals Chiral symmetry breaking, entanglement, and the nucleon spin decomposition

2019 ◽  
Vol 35 (08) ◽  
pp. 2050048 ◽  
Author(s):  
Silas R. Beane ◽  
Peter J. Ehlers
Keyword(s):  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Order Parameter ◽  
Chiral Symmetry Breaking ◽  
Entanglement Entropy ◽  
Reduced Density Matrix ◽  
Nucleon Spin ◽  
Maximal Entanglement ◽  
Nucleon State ◽  
Reduced Density

The nucleon is naturally viewed as a bipartite system of valence spin — defined by its non-vanishing chiral charge — and non-valence or sea spin. The sea spin can be traced over to give a reduced density matrix, and it is shown that the resulting entanglement entropy acts as an order parameter of chiral symmetry breaking in the nucleon. In the large-[Formula: see text] limit, the entanglement entropy vanishes and the valence spin accounts for all of the nucleon spin, while in the limit of maximal entanglement entropy, the nucleon loses memory of the valence spin and consequently has spin dominated by the sea. The nucleon state vector in the chiral basis, fit to low-energy data, gives a valence spin content consistent with experiment and lattice QCD determinations, and has large entanglement entropy.

scholarly journals Role of the Δ Resonance in the Population of a Four-Nucleon State in the Fe56→Fe54 Reaction at Relativistic Energies

2016 ◽  
Vol 117 (22) ◽  
Author(s):  
Zs. Podolyák ◽  
C. M. Shand ◽  
N. Lalović ◽  
J. Gerl ◽  
D. Rudolph ◽  
...  
Keyword(s):  
Nucleon State

scholarly journals The Nucleon Ground State

1979 ◽  
Vol 32 (5) ◽  
pp. 525
Author(s):  
EK Rose ◽  
JL Cook ◽  
E Clayton
Keyword(s):  
Probability Density ◽  
Ground State ◽  
State Potential ◽  
Pion Nucleon ◽  
Overlap Matrix ◽  
Nucleon State ◽  
Infinite Set ◽  
Nonlocal Potentials

From the parameters obtained in a previous paper for the Pll pion-nucleon state, the ground state potential is determined and the meson probability density is calculated. The results hold for the simplest form of the overlap matrix and are phase-equivalent to an infinite set of nonlocal potentials.

Uniqueness of the nucleon state

1982 ◽  
Vol 25 (9) ◽  
pp. 2439-2440 ◽  
Author(s):  
William B. Rolnick
Keyword(s):  
Nucleon State

scholarly journals Bayesian approach to the first excited nucleon state in lattice QCD

2003 ◽  
Vol 119 ◽  
pp. 302-304 ◽  
Author(s):  
S. Sasaki ◽  
K. Sasaki ◽  
T. Hatsuda ◽  
M. Asakawa
Keyword(s):  
Lattice Qcd ◽  
Bayesian Approach ◽  
Nucleon State

On the possible existence of a new nucleon state

1970 ◽  
Vol 32 (6) ◽  
pp. 499-500 ◽  
Author(s):  
Ya.I. Azimov
Keyword(s):  
Nucleon State
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