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Nonlinear dynamics in three-dimensional QED and nontrivial infrared structure
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Nonlinear dynamics in three-dimensional QED and nontrivial infrared structure
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| dc.contributor.author | Mavromatos, N. E. | |
| dc.contributor.author | Papavassiliou, Joannis | |
| dc.date.accessioned | 2015-04-10T08:17:50Z | |
| dc.date.available | 2015-04-10T08:17:50Z | |
| dc.date.issued | 1999 | |
| dc.identifier.citation | Mavromatos, N. E. Papavassiliou, Joannis 1999 Nonlinear dynamics in three-dimensional QED and nontrivial infrared structure Physical Review D 60 12 125008 | |
| dc.identifier.uri | http://hdl.handle.net/10550/42997 | |
| dc.description.abstract | In this work we consider a coupled system of Schwinger-Dyson equations for self-energy and vertex functions in QED_3. Using the concept of a semi-amputated vertex function, we manage to decouple the vertex equation and transform it in the infrared into a non-linear differential equation of Emden-Fowler type. Its solution suggests the following picture: in the absence of infrared cut-offs there is only a trivial infrared fixed-point structure in the theory. However, the presence of masses, for either fermions or photons, changes the situation drastically, leading to a mass-dependent non-trivial infrared fixed point. In this picture a dynamical mass for the fermions is found to be generated consistently. The non-linearity of the equations gives rise to highly non-trivial constraints among the mass and effective (`running') gauge coupling, which impose lower and upper bounds on the latter for dynamical mass generation to occur. Possible implications of this to the theory of high-temperature superconductivity are briefly discussed. | |
| dc.language.iso | eng | |
| dc.relation.ispartof | Physical Review D, 1999, vol. 60, num. 12, p. 125008 | |
| dc.subject | Física | |
| dc.title | Nonlinear dynamics in three-dimensional QED and nontrivial infrared structure | |
| dc.type | journal article | es_ES |
| dc.date.updated | 2015-04-10T08:17:50Z | |
| dc.identifier.doi | 10.1103/PhysRevD.60.125008 | |
| dc.identifier.idgrec | 091139 | |
| dc.rights.accessRights | open access | es_ES |
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