ERG and Schwinger-Dyson Equations - Comparison in formulations and applications --

Details ERG and Schwinger-Dyson Equations - Comparison in formulations and applications -- ERG and Schwinger-Dyson Equations - Comparison in formulations and applications --

2001-01-11

arxiv.org/abs/hep-ph/0101107v2

Int.J.Mod.Phys. A16 (2001) 1913-1926

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 6 figures, references are added. Invited talk presented at Second Conference on the Exact RG, Sept 18 - 22, 2000, Ro

Scientific paper

10.1142/S0217751X01004566

The advantageous points of ERG in applications to non-perturbative analyses of quantum field theories are discussed in comparison with the Schwinger-Dyson equations. First we consider the relation between these two formulations specially by examining the large N field theories. In the second part we study the phase structure of dynamical symmetry breaking in three dimensional QED as a typical example of the practical applications.

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