Solution of Partial Quasipotential Equations in the Relativistic Configuration Representation

2018 ◽  
Vol 61 (3) ◽  
pp. 540-547
Author(s):  
S. I. Fialka ◽  
V. N. Kapshai
Keyword(s):  
Configuration Representation ◽  
Relativistic Configuration ◽  
Relativistic Configuration Representation

On Threshold Resummation S-Factor for a System of Two Relativistic Spinor Particles with Arbitrary Masses

2020 ◽  
Vol 23 (4) ◽  
pp. 449-460
Author(s):  
Yu. D. Chernichenko ◽  
L. P. Kaptari ◽  
O. P. Solovtsova
Keyword(s):  
Composite System ◽  
Hamiltonian Formulation ◽  
Quantum Field ◽  
Quasipotential Approach ◽  
Threshold Resummation ◽  
S Factor ◽  
Configuration Representation ◽  
Relativistic Configuration ◽  
The Difference ◽  
Relativistic Configuration Representation

We present a new threshold resummation S-factor obtained for a composite system of two relativistic spin 1/2 particles of arbitrary masses interacting via a Coulomb-like chromodynamical potential. The analysis is performed in the framework of a relativistic quasipotential approach in the Hamiltonian formulation of the quantum field theory in the relativistic configuration representation. The pseudoscalar, vector, and pseudovector systems are considered. The difference in the behavior of the S-factor for these cases is discussed. A connection between the new and the previously obtained S-factors for spinless particles of arbitrary masses and relativistic spinor particles of equal masses is established.

Hyperfine-structure studies of Nb ii: Experimental and relativistic configuration-interaction results

1995 ◽  
Vol 51 (5) ◽  
pp. 3534-3540 ◽  
Author(s):  
L. Young ◽  
S. Hasegawa ◽  
C. Kurtz ◽  
Debasis Datta ◽  
Donald R. Beck
Keyword(s):  
Hyperfine Structure ◽  
Configuration Interaction ◽  
Relativistic Configuration ◽  
Relativistic Configuration Interaction
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