We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Scattering Amplitudes Interpolating Between Instant Form and Front Form of Relativistic Dynamics.
- Authors
Ji, Chueng-Ryong; Bakker, Bernard; Li, Ziyue; Suzuki, Alfredo
- Abstract
Among the three forms of relativistic Hamiltonian dynamics proposed by Dirac in , the front form has the largest number of kinematic generators. This distinction provides useful consequences in the analysis of physical observables in hadron physics. Using the method of interpolation between the instant form and the front form, we introduce the interpolating scattering amplitude that links the corresponding time-ordered amplitudes between the two forms of dynamics and provide the physical meaning of the kinematic transformations as they allow the invariance of each individual time-ordered amplitude for an arbitrary interpolation angle. We discuss the rationale for using front form dynamics, nowadays known as light-front dynamics (LFD), and present a few explicit examples of hadron phenomenology that LFD uniquely can offer from first-principles quantum chromodynamics. In particular, model-independent constraints are provided for the analyses of deuteron form factors and the N Δ transition form factors at large momentum transfer squared Q. The swap of helicity amplitudes between the collinear and non-collinear kinematics is also discussed in deeply virtual Compton scattering.
- Subjects
SCATTERING (Physics); RELATIVISTIC kinematics; INTERPOLATION; HAMILTONIAN systems; PHASE transitions; QUANTUM chromodynamics
- Publication
Few-Body Systems, 2014, Vol 55, Issue 5-7, p425
- ISSN
0177-7963
- Publication type
Article
- DOI
10.1007/s00601-013-0796-9