Robert Coquereaux
Abstract
Geometrical aspects of several classes of σ models are studied. The geometrical meaning of perturbative quantum field theory is discussed in the content of nonlinear σ models. Results on the one-loop effective action are recovered and generalized.
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Geometrical aspects of several classes of σ models are studied. The geometrical meaning of perturbative quantum field theory is discussed in the content of nonlinear σ models. Results on the one-loop effective action are recovered and generalized.
Key concepts: Physics, Sigma model, Nonlinear system, Effective action, Sigma, Action (physics), Theoretical physics, Quantum field theory