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X-WR-CALDESC:Events for Centre for Mathematical Sciences
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DTSTART;TZID=UTC:20221019T160000
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SUMMARY:Bernard Kay (University of York) - A product picture for quantum electrodynamics
DESCRIPTION:We address the problem of finding a product picture for QED — i.e. a reformulation in which (formally) it has a total Hamiltonian arising as a sum of a free electromagnetic Hamiltonian\, a free Dirac Hamiltonian and an interaction term\, acting on a Hilbert space which is a subspace (the physical subspace) of the full tensor product of an electron/positron Hilbert space and an electromagnetic-field Hilbert space. The traditional Coulomb gauge formulation of QED isn’t a product picture in this sense because in it\, the longitudinal part of the electric field is a function of the Dirac field. We exhibit a product picture and prove (at a formal level) its equivalence with Coulomb gauge QED. We also point out a number of its features. \nReference: arXiv:2204.01177\, and for more details\, Sections 4 and 5 of arXiv:2003.07473
URL:http://math-sciences.org/event/bernard-kay-university-of-york-a-product-picture-for-quantum-electrodynamics/
LOCATION:Room 101\, 2-5 Kirkby Place\, Plymouth\, PL4 6DT\, United Kingdom
CATEGORIES:Theoretical Physics
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