Light-front-quantized QCD in Covariant Gauge [electronic resource].
- Imprint
- Washington, D.C. : United States. Dept. of Energy. Office of Energy Research ; Oak Ridge, Tenn. : distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1999
- Physical description
- 1 online resource (15 pages) : digital, PDF file.
Description
Creators/Contributors
- Contributor
- Stanford Linear Accelerator Center. Researcher
- United States. Dept. of Energy. Office of Energy Research. Sponsor
- United States. Dept. of Energy. Office of Scientific and Technical Information. Distributor
- Srivastava, Prem P. Author
Contents/Summary
- Summary
- The light-front (LF) canonical quantization of quantum chromodynamics in covariant gauge is discussed. The Dirac procedure is used to eliminate the constraints in the gauge-fixed front form theory quantum action and to construct the LF Hamiltonian formulation. The physical degrees of freedom emerge naturally. The propagator of the dynamical ψ₊ part of the free fermionic propagator in the LF quantized field theory is shown to be causal and not to contain instantaneous terms. Since the relevant propagators in the covariant gauge formulation are causal, rotational invariance--including the Coulomb potential in the static limit--can be recovered, avoiding the difficulties encountered in light-cone gauge. The Wick rotation may also be performed allowing the conversion of momentum space integrals into Euclidean space forms. Some explicit computations are done in quantum electrodynamics to illustrate the equivalence of front form theory with the conventional covariant formulation. LF quantization thus provides a consistent formulation of gauge theory, despite the fact that the hyperplanes x{sup ±} = 0 used to impose boundary conditions constitute characteristic surfaces of a hyperbolic partial differential equation.
Subjects
- Subjects
- Boundary Conditions.
- Coulomb Field.
- Degrees Of Freedom.
- Euclidean Space.
- Hamiltonians.
- Light Cone.
- Partial Differential Equations.
- Propagator.
- Quantization.
- Quantum Chromodynamics.
- Quantum Electrodynamics.
- Rotation.
- Classical And Quantum Mechanics, General Physics.
- Physics Of Elementary Particles And Fields.
Bibliographic information
- Publication date
- 1999
- Note
- Published through SciTech Connect.
- 06/17/1999.
- "slac-pub-8168"
- Srivastava, Prem P.
- Report
- Topical;
- Funding information
- AC03-76SF00515
