Gauge Symmetry in Renormalization Group Flow

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Asnafi, Shima Sadat | 2019

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Type of Document: Ph.D. Dissertation
Language: Farsi
Document No: 52066 (04)
University: Sharif University of Technology
Department: Physics
Advisor(s): Ardalan, Farhad
Abstract:
Exact Renormalization Equations (ERGE) are powerful non-perturbative tools to study the dynamics of Quantum Field theories, with respect to the change of energy. Putting cut-off on momentums of the system, is the specific regularization that is used to obtain ERGEs. This regularization breaks the gauge symmetry in the case of gauge theories. So the symmetry will be lost through the energy flow as well.Finding a gauge symmetry for a regularized system is the aim of this research. Also we have investigated the related ERGEs and the behavior of symmetry through the flow
Keywords:
Exat Renormalization Group Equations ; Regularization ; Gauge Symmetry ; Renormalization Group

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