--- title: "Quantum Electrical and Chromodynamics treated through Thompson's approach • CBPF Index" description: "CBPF INDEX es el sistema de seguimiento de la producción científica y tecnológica del CBPF. En él se puede obtener la lista de publicaciones de artículos, libros, informes técnicos, etc. de toda la comunidad del CBPF." canonical_url: "https://index.cbpf.br/es/publicacoes/6ad2a767639f62b11adbb01b" locale: es meta: "og:description": "CBPF INDEX es el sistema de seguimiento de la producción científica y tecnológica del CBPF. En él se puede obtener la lista de publicaciones de artículos, libros, informes técnicos, etc. de toda la comunidad del CBPF." "og:image": "https://index.cbpf.br/_og/d/c_Item%2Ctitulo_Quantum%2BElectrical%2Band%2BChromodynamics%2Btreated%2Bthrough%2BThompson's%2Bapproach%2Ctipo_~Tm90YSBkZSBGw61zaWNh%2Ccor_~I2E4MmMwMA%2Cautores_~Q2zDoXVkaW8gTmFzc2lmOyBQLiBSLiBTaWx2YQ%2Cdetalhe_~MjkvMDcvMjAxMA%2Csecao_Publicaciones%2Cp_Ii9lcy9wdWJsaWNhY29lcy82YWQyYTc2NzYzOWY2MmIxMWFkYmIwMWIi%2Cs_mzWiuk9VvHw4AFua.png" "og:image:height": "600" "og:image:type": image/png "og:image:width": "1200" "og:title": "Quantum Electrical and Chromodynamics treated through Thompson's approach • CBPF Index" "twitter:image": "https://index.cbpf.br/_og/d/c_Item%2Ctitulo_Quantum%2BElectrical%2Band%2BChromodynamics%2Btreated%2Bthrough%2BThompson's%2Bapproach%2Ctipo_~Tm90YSBkZSBGw61zaWNh%2Ccor_~I2E4MmMwMA%2Cautores_~Q2zDoXVkaW8gTmFzc2lmOyBQLiBSLiBTaWx2YQ%2Cdetalhe_~MjkvMDcvMjAxMA%2Csecao_Publicaciones%2Cp_Ii9lcy9wdWJsaWNhY29lcy82YWQyYTc2NzYzOWY2MmIxMWFkYmIwMWIi%2Cs_mzWiuk9VvHw4AFua.png" --- > Index of every page on this site: [llms.txt](https://index.cbpf.br/llms.txt) **Nota de Física****Publicado** # **Quantum Electrical and Chromodynamics treated through Thompson's approach** **Cláudio Nassif; P. R. Silva** 29/07/2010 [**Descargar PDF **0,2 MB](https://index.cbpf.br/files/publicacao/6ad2a767639f62b11adbb01b/pdf) [**Contactar al responsable**](mailto:apub@cbpf.br?subject=Quantum%20Electrical%20and%20Chromodynamics%20treated%20through%20Thompson's%20approach) ## **Datos de la publicación**
Autores
Cláudio Nassif; P. R. Silva
Tipo
Nota de Física
Estado
Publicado
Fecha de publicación
29/07/2010
Descripción
In this work we apply Thompson's method (of the dimensions and scales) to study some features of the Quantum Electro and Chromodynamics. This heuristic method can be considered as a simple and alternative way to the Renormalisation Group (R.G.) approach and when applied to QED-lagrangian is able to obtain in a first approximation both the running coupling constant behavior of $\alpha (\mu)$ and the mass $m(\mu)$. The calculations are evaluated just at $d_c=4$, where $d_c$ is the upper critical dimension of the problem, so that we obtain the logarithmic behavior both for the coupling $\alpha$ and the excess of mass $\Delta m$ on the energy scale $\mu$. Although our results are well-known in the vast literature of field theories, the advantage of Thompson's method, beyond its simplicity is that it is able to extract directly from QED-lagrangian the physical (finite) behavior of $\alpha(\mu)$ and $m(\mu)$, bypassing hard problems of divergences which normally appear in the conventional renormalisation schemes applied to field theories like QED. Quantum Chromodynamics (QCD) is also treated by the present method in order to obtain the quark condensate value. Besides this, the method is also able to evaluate the vacuum pressure at the boundary of the nucleon. This is done by assumming a step function behavior for the running coupling constant of the QCD, which fits nicely to some quantities related to the strong interaction evaluated through the \it{\bf{MIT}-bag model \/}.
Año
2006
Número
CBPF-NF-022/06
Vínculo con tesis
No
Vínculo con beca
No
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