dorsal/arxiv
View SchemaValidity of Feynman's prescription of disregarding the Pauli principle in intermediate states
| Authors | F. A. B. Coutinho, Y. Nogami, Lauro Tomio |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9812073 |
| URL | https://arxiv.org/abs/quant-ph/9812073 |
| DOI | 10.1103/PhysRevA.59.2624 |
Abstract
Regarding the Pauli principle in quantum field theory and in many-body quantum mechanics, Feynman advocated that Pauli's exclusion principle can be completely ignored in intermediate states of perturbation theory. He observed that all virtual processes (of the same order) that violate the Pauli principle cancel out. Feynman accordingly introduced a prescription, which is to disregard the Pauli principle in all intermediate processes. This ingeneous trick is of crucial importance in the Feynman diagram technique. We show, however, an example in which Feynman's prescription fails. This casts doubts on the general validity of Feynman's prescription.
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"abstract": "Regarding the Pauli principle in quantum field theory and in many-body\nquantum mechanics, Feynman advocated that Pauli\u0027s exclusion principle can be\ncompletely ignored in intermediate states of perturbation theory. He observed\nthat all virtual processes (of the same order) that violate the Pauli principle\ncancel out. Feynman accordingly introduced a prescription, which is to\ndisregard the Pauli principle in all intermediate processes. This ingeneous\ntrick is of crucial importance in the Feynman diagram technique. We show,\nhowever, an example in which Feynman\u0027s prescription fails. This casts doubts on\nthe general validity of Feynman\u0027s prescription.",
"arxiv_id": "quant-ph/9812073",
"authors": [
"F. A. B. Coutinho",
"Y. Nogami",
"Lauro Tomio"
],
"categories": [
"quant-ph",
"hep-ph"
],
"doi": "10.1103/PhysRevA.59.2624",
"title": "Validity of Feynman\u0027s prescription of disregarding the Pauli principle in intermediate states",
"url": "https://arxiv.org/abs/quant-ph/9812073"
},
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