Interpolation Between the Instant Form and the Front Form of Relativistic Dynamics

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• 作者：Chueng-Ryong Ji
• 刊名：Few-Body Systems
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：58
• 期：2
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Particle and Nuclear Physics; Nuclear Physics, Heavy Ions, Hadrons; Atomic, Molecular, Optical and Plasma Physics;
• 出版者：Springer Vienna
• ISSN：1432-5411
• 卷排序：58

文摘

The instant form and the front form of relativistic dynamics proposed by Dirac (Rev Mod Phys 21:392–399, 1949) can be linked by introducing an interpolating angle. The instant form dynamics (IFD) provides a traditional approach evolved from non-relativistic dynamics and makes a close contact with Euclidean space developing temperature-dependent quantum field theory, lattice QCD, etc. The front form dynamics, now known as the light-front dynamics (LFD), however, works strictly in Minkowski space and provides useful frameworks to study deep inelastic scattering, parton distribution functions, deeply virtual Compton scattering, generalized parton distributions, etc. We present the recent development of the interpolation between IFD and LFD and discuss ramifications from this development.