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The light-front quantization of quantum field theories provides a useful alternative to ordinary equal-time quantization. In particular, it can lead to a relativistic description of bound systems in terms of quantum-mechanical wave functions. The quantization is based on the choice of light-front coordinates, where plays the role of time and the corresponding spatial coordinate is . Here, is the ordinary time, is a Cartesian coordinate, and is the speed of light. The other two Cartesian coordinates, and , are untouched and often called transverse or perpendicular, denoted by symbols of the type . The choice of the frame of reference where the time and -axis are defined can be left unspecified in an exactly soluble relativistic theory, but in practical calculations some choices may be more suitable than others. The basic formalism is discussed elsewhere.
Freddy Alexander Cachazo is a Venezuelan-born theoretical physicist who holds the Gluskin Sheff Freeman Dyson Chair in Theoretical Physics at the Perimeter Institute for Theoretical Physics in Waterloo, Ontario, Canada.
Zvi Bern is an American theoretical particle physicist. He is a professor at University of California, Los Angeles (UCLA).
Ruth Alexandra Britto-Pacumio is an American mathematical physicist whose research topics include black holes, Yang–Mills theory, and the theory of Feynman integrals; with Freddy Cachazo, Bo Feng, and Edward Witten she is one of the namesakes of the BCFW recursion relations for computing scattering amplitudes. She is an associate professor in mathematics and theoretical physics at Trinity College Dublin, and is also affiliated with the Institut de Physique Théorique of CEA Saclay.
References
- ↑ Brecht Truijen (August 2012). "Britto-Cachazo-Feng-Witten Recursion: An Introduction" (PDF). Archived from the original (PDF) on 21 February 2014. Retrieved 23 September 2013.
- ↑ Achilleas Lazopoulos (24 August 2006). "B.C.F.W. Recursion Relations and the Link to Feynman Graphs" (PDF). Archived from the original (PDF) on 27 September 2013. Retrieved 23 September 2013.
- ↑ Ruth Britto; Freddy Cachazo; Bo Feng; Edward Witten (2005). "Direct Proof of Tree-Level Recursion Relation in Yang-Mills Theory". Physical Review Letters. 94 (18): 181602. arXiv: hep-th/0501052 . Bibcode:2005PhRvL..94r1602B. doi:10.1103/PhysRevLett.94.181602. PMID 15904356. S2CID 10180346.
- ↑ Bo Feng; Mingxing Luo (2011). "An Introduction to On-shell Recursion Relations". Frontiers of Physics. 7 (5): 533–575. arXiv: 1111.5759 . Bibcode:2012FrPhy...7..533F. doi:10.1007/s11467-012-0270-z. S2CID 118409551.
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