Comparison of instant form and front form one-particle exchange models

1996 ◽  
Vol 54 (2) ◽  
pp. 495-506 ◽  
Author(s):  
Michael G. Fuda ◽  
Yingfang Zhang
Keyword(s):  
Instant Form ◽  
Particle Exchange ◽  
Front Form

Scattering Amplitudes Interpolating Between Instant Form and Front Form of Relativistic Dynamics

2014 ◽  
Vol 55 (5-7) ◽  
pp. 425-434
Author(s):  
Chueng-Ryong Ji ◽  
Bernard L. G. Bakker ◽  
Ziyue Li ◽  
Alfredo T. Suzuki
Keyword(s):  
Scattering Amplitudes ◽  
Relativistic Dynamics ◽  
Instant Form ◽  
Front Form

scholarly journals Interpolating helicity spinors between the instant form and the light-front form

2015 ◽  
Vol 92 (10) ◽  
Author(s):  
Ziyue Li ◽  
Murat An ◽  
Chueng-Ryong Ji
Keyword(s):  
Light Front ◽  
Instant Form ◽  
Front Form

scholarly journals ANGULAR MOMENTUM DECOMPOSITION OF CHIRAL MULTIPLETS IN FRONT FORM

2012 ◽  
Vol 27 (28) ◽  
pp. 1250163 ◽  
Author(s):  
MARÍA GÓMEZ-ROCHA
Keyword(s):  
Angular Momentum ◽  
General Expression ◽  
Simple Form ◽  
Unitary Transformation ◽  
Chiral Limit ◽  
Instant Form ◽  
Front Form ◽  
The One ◽  
Angular Momentum Coupling ◽  
Momentum Coupling

In this paper, we derive the unitary transformation that relates the [Formula: see text] chiral basis {R;IJPC} to the {I;2S+1LJ}-basis in a front-form framework. From the most general expression for the Clebsch–Gordan coefficients of the Poincaré group one can see that the chiral limit brings the angular momentum coupling into a simple form that permits the relation in terms of SU(2) Clebsch–Gordan coefficients. We demonstrate that such a transformation is identical to the one obtained for canonical spin in the instant form.

Instant form dynamics of one particle exchange models

1995 ◽  
Vol 52 (3) ◽  
pp. 1260-1269 ◽  
Author(s):  
Michael G. Fuda
Keyword(s):  
Instant Form ◽  
Particle Exchange

ELIMINATION OF THE FIELD DEGREES OF FREEDOM IN RELATIVISTIC SYSTEM OF POINTLIKE CHARGES

2001 ◽  
Vol 16 (30) ◽  
pp. 4865-4889 ◽  
Author(s):  
A. NAZARENKO
Keyword(s):  
Degrees Of Freedom ◽  
Hamiltonian Formulation ◽  
Coupling Constant ◽  
Relativistic System ◽  
First Order ◽  
Instant Form ◽  
Constraint Theory ◽  
Canonical Realization ◽  
Poincaré Algebra ◽  
Front Form

The Hamiltonian formulation of relativistic system of charged particles plus electromagnetic field in the Dirac instant and front forms of dynamics is considered. The canonical realization of the Poincaré algebra in the terms of gauge-invariant variables is found. The procedure of elimination of the field degrees of freedom within the framework of the Dirac constraint theory is elaborated up to the first order in the coupling constant. The Poincaré generators in the terms of particle variables are obtained. The relations between the instant form generators and front form ones are examined. The instant form Hamiltonian in the weak-relativistic approximation results in the Darwin Hamiltonian.

scholarly journals Comparison of Relativistic Bound-State Calculations in Front-Form and Instant-Form Dynamics

2003 ◽  
Vol 33 (1) ◽  
pp. 27-47 ◽  
Author(s):  
B. L. G. Bakker ◽  
M. van Iersel ◽  
F. Pijlman
Keyword(s):  
Bound State ◽  
Instant Form ◽  
Front Form
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