Nuclear Force from Monte Carlo Simulations of Lattice Quantum Chromodynamics - High Energy Physics - PhenomenologyReportar como inadecuado




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Abstract: The nuclear force acting between protons and neutrons is studied in the MonteCarlo simulations of the fundamental theory of the strong interaction, thequantum chromodynamics defined on the hypercubic space-time lattice. After abrief summary of the empirical nucleon-nucleon NN potentials which can fitthe NN scattering experiments in high precision, we outline the basicformulation to derive the potential between the extended objects such as thenucleons composed of quarks. The equal-time Bethe-Salpeter amplitude is a keyingredient for defining the NN potential on the lattice. We show the results ofthe numerical simulations on a $32^4$ lattice with the lattice spacing $a\simeq 0.137 $fm lattice volume 4.4 fm$^4$ in the quenched approximation.The calculation was carried out using the massively parallel computer BlueGene-L at KEK. We found that the calculated NN potential at low energy hasbasic features expected from the empirical NN potentials; attraction at longand medium distances and the repulsive core at short distance. Various futuredirections along this line of research are also summarized.



Autor: S. Aoki, T. Hatsuda, N. Ishii

Fuente: https://arxiv.org/



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