Renormalization of Hamiltonian Field Theory; a non-perturbative and non-unitarity approach
Amir H. Rezaeian, Niels R. Walet
Abstract
Renormalization of Hamiltonian field theory is usually a rather painful algebraic or numerical exercise. By combining a method based on the coupled cluster method, analysed in detail by Suzuki and Okamoto, with a Wilsonian approach to renormalization, we show that a powerful and elegant method exist to solve such problems. The method is in principle non-perturbative, and is not necessarily unitary.
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