NAGIOS: RODERIC FUNCIONANDO

Pinch technique self-energies and vertices to all orders in perturbation theory

Repositori DSpace/Manakin

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

Pinch technique self-energies and vertices to all orders in perturbation theory

Mostra el registre parcial de l'element

dc.contributor.author Binosi, Daniele
dc.contributor.author Papavassiliou, Joannis
dc.date.accessioned 2015-04-10T08:45:17Z
dc.date.available 2015-04-10T08:45:17Z
dc.date.issued 2004
dc.identifier.citation Binosi, Daniele Papavassiliou, Joannis 2004 Pinch technique self-energies and vertices to all orders in perturbation theory Journal of Physics G-Nuclear and Particle Physics 30 2 203 234
dc.identifier.uri http://hdl.handle.net/10550/43015
dc.description.abstract The all-order construction of the pinch technique gluon self-energy and quark-gluon vertex is presented in detail within the class of linear covariant gauges. The main ingredients in our analysis are the identification of a special Green's function, which serves as a common kernel to all self-energy and vertex diagrams, and the judicious use of the Slavnov-Taylor identity it satisfies. In particular, it is shown that the ghost-Green's functions appearing in this identity capture precisely the result of the pinching action at arbitrary order. By virtue of this observation the construction of the quark-gluon vertex becomes particularly compact. It turns out that the aforementioned ghost-Green's functions play a crucial role, their net effect being the non-trivial modification of the ghost diagrams of the quark-gluon vertex in such a way as to reproduce dynamically the characteristic ghost sector of the background field method. The gluon self-energy is also constructed following two different procedures. First, an indirect derivation is given, by resorting to the strong induction method and the assumption of the uniqueness of the S-matrix. Second, an explicit construction based on the intrinsic pinch technique is provided, using the Slavnov-Taylor identity satisfied by the all-order three-gluon vertex nested inside the self-energy diagrams. The process-independence of the gluon self-energy is also demonstrated, by using gluons instead of quark as external test particles, and identifying the corresponding kernel function, together with its Slavnov-Taylor identity. Finally, the general methodology for carrying out the renormalization of the resulting Green's functions is outlined, and various open questions are briefly discussed.
dc.language.iso eng
dc.relation.ispartof Journal of Physics G-Nuclear and Particle Physics, 2004, vol. 30, num. 2, p. 203-234
dc.subject Física
dc.title Pinch technique self-energies and vertices to all orders in perturbation theory
dc.type journal article es_ES
dc.date.updated 2015-04-10T08:45:18Z
dc.identifier.doi 10.1088/0954-3899/30/2/017
dc.identifier.idgrec 091152
dc.rights.accessRights open access es_ES

Visualització       (513.9Kb)

Aquest element apareix en la col·lecció o col·leccions següent(s)

Mostra el registre parcial de l'element

Cerca a RODERIC

Cerca avançada

Visualitza

Estadístiques