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Analytic continuation of functional renormalization group equations
Functional renormalization group equations are analytically continued from imaginary Matsubara frequencies to the real frequency axis. On the example of a scalar field with O(N) symmetry we discuss the analytic structure of the flowing action and show how it is possible to derive and solve flow equa...
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| Lenguaje: | eng |
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2011
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| Acceso en línea: | https://dx.doi.org/10.1007/JHEP05(2012)021 http://cds.cern.ch/record/1408596 |