Coupled-cluster renormalization group

Details Coupled-cluster renormalization group Coupled-cluster renormalization group

2003-10-22

arxiv.org/abs/hep-th/0310205v1

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, Talk presented at the "Light Cone Workshop: Hadrons and Beyond", 5-9 August 2003, Durham, UK

Scientific paper

The coupled cluster method (CCM) is one of the most successful and universally applicable techniques in quantum many-body theory. The intrinsic nonlinear and non-perturbative nature of the method is considered to be one of its advantages. We present here a combination of CCM with the Wilsonian renormalization group which leads to a powerful framework for construction of effective Hamiltonian field theories. As a toy example we obtain the two-loop renormalized $\phi^{4}$ theory.

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