The 1/N expansion method in quantum field theory

Abstract : The motivations of the 1/N expansion method in quantum field theory are explained. The method is first illustrated with the O(N) model of scalar fields. A second example is considered with the two-dimensional Gross-Neveu model of fermion fields with global U(N) and discrete chiral symmetries. The case of QCD is briefly sketched.
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http://hal.in2p3.fr/in2p3-01314333
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Submitted on : Wednesday, May 11, 2016 - 11:25:38 AM
Last modification on : Thursday, January 11, 2018 - 6:12:41 AM

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  • HAL Id : in2p3-01314333, version 1
  • ARXIV : 1512.06784

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H. Sazdjian. The 1/N expansion method in quantum field theory. 2015. ⟨in2p3-01314333⟩

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