scholarly journals Extracting many-body color charge correlators in the proton from exclusive DIS at large Bjorken x

2018 ◽  
Vol 98 (9) ◽  
Author(s):  
Adrian Dumitru ◽  
Gerald A. Miller ◽  
Raju Venugopalan
Keyword(s):  
Body Color ◽  
Many Body ◽  
Color Charge ◽  
Bjorken X

scholarly journals Low-energy meson spectrum from a QCD approach based on many-body methods

2017 ◽  
Vol 26 (12) ◽  
pp. 1750082 ◽  
Author(s):  
D. A. Amor-Quiroz ◽  
T. Yépez-Martínez ◽  
P. O. Hess ◽  
O. Civitarese ◽  
A. Weber
Keyword(s):  
Random Phase Approximation ◽  
Random Phase ◽  
Low Energy ◽  
Collective State ◽  
Many Body ◽  
Color Charge ◽  
Charge Densities ◽  
Linear Formula ◽  
Energy Domain ◽  
Meson States

The Tamm–Dancoff Approximation (TDA) and Random Phase Approximation (RPA) many-body methods are applied to an effective Quantum Chromodynamics (QCD) Hamiltonian in the Coulomb gauge. The gluon effects in the low-energy domain are accounted for by the Instantaneous color-Coulomb Interaction between color-charge densities, approximated by the sum of a Coulomb ([Formula: see text]) and a confining linear ([Formula: see text]) potential. We use the eigenfunctions of the harmonic oscillator as a basis for the quantization of the quark fields, and discuss how suitable this basis is in various steps of the calculation. We show that the TDA results already reproduce the gross-structure of the light-flavored meson states. The pion-like state, which in the RPA description is a highly collective state, is in better agreement with the experimental value. The results are related to other nonperturbative treatments and compared to experimental data. We discuss the advantages of the present approach.

scholarly journals Theoretical estimates of the width of light-meson states in the SO(4) (2+1)-flavor limit

2018 ◽  
Vol 27 (01) ◽  
pp. 1850001 ◽  
Author(s):  
Tochtli Yépez-Martínez ◽  
Osvaldo Civitarese ◽  
Peter Otto Hess
Keyword(s):  
Simple Structure ◽  
Coulomb Gauge ◽  
Low Energy ◽  
Light Meson ◽  
Vector Mesons ◽  
Many Body ◽  
Color Charge ◽  
Charge Interaction ◽  
Body Techniques ◽  
Meson States

The low-energy sector of the mesonic spectrum exhibits some features which may be understood in terms of the SO(4) symmetry contained in the QCD-Hamiltonian written in the Coulomb Gauge. In our previous work, we have shown that this is indeed the case when the Instantaneous Color-Charge Interaction (ICCI) is treated by means of nonperturbative many-body techniques. Continuing along this line of description, in this work we calculate the width of meson states belonging to the low portion of the spectrum ([Formula: see text] GeV). In spite of the rather simple structure of the Hamiltonian used to calculate the spectra of pseudoscalar and vector mesons, the results for the width of these states follow the pattern of the data.

Novel simulation model for many-body multipole dispersion interactions

1998 ◽  
Vol 94 (3) ◽  
pp. 417-433 ◽  
Author(s):  
MARTIN VAN DER HOEF ◽  
PAUL MADDEN
Keyword(s):  
Simulation Model ◽  
Dispersion Interactions ◽  
Many Body

On the many-body theory of nuclear reactions

1968 ◽  
Vol 111 (1) ◽  
pp. 392-416 ◽  
Author(s):  
K DIETRICH ◽  
K HARA
Keyword(s):  
Nuclear Reactions ◽  
Many Body ◽  
Many Body Theory ◽  
The Many ◽  
Body Theory

MANY-BODY THEORY FOR HYPERFINE EFFECTS IN ATOMS AND MOLECULES

1970 ◽  
Vol 31 (C4) ◽  
pp. C4-99-C4-104
Author(s):  
T. P. DAS ◽  
C. M. DUTTA ◽  
N. C. DUTTA
Keyword(s):  
Many Body ◽  
Atoms And Molecules ◽  
Many Body Theory ◽  
Body Theory

ELECTROWETTING-INDUCED DROPLET JUMPING SIMULATION USING MANY-BODY DISSIPATIVE PARTICLE DYNAMICS

2019 ◽  
Author(s):  
Ting Liu ◽  
Anupam Mishra ◽  
Mohsen Torabi ◽  
Ahmed A. Hemeda ◽  
James Palko ◽  
...  
Keyword(s):  
Dissipative Particle Dynamics ◽  
Particle Dynamics ◽  
Many Body
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