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math-ph2018★ 9 cited
Ricci Flow from the Renormalization of Nonlinear Sigma Models in the Framework of Euclidean Algebraic Quantum Field Theory
Mauro Carfora, Claudio Dappiaggi, Nicolò Drago +1
The perturbative approach to nonlinear Sigma models and the associated renormalization group flow are discussed within the framework of Euclidean algebraic quantum field theory and…
math-ph2018★ 20 cited
Fundamental solutions for the wave operator on static Lorentzian manifolds with timelike boundary
Claudio Dappiaggi, Nicolò Drago, Hugo Ferreira
We consider the wave operator on static, Lorentzian manifolds with timelike boundary and we discuss the existence of advanced and retarded fundamental solutions in terms of boundar…