RENORMALIZATION OF HAMILTONIAN
| Autor: | Garnik G. Alexanian, Enrique Moreno |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Physics
Nuclear and High Energy Physics High Energy Physics::Lattice Asymptotic safety in quantum gravity Astronomy and Astrophysics Atomic and Molecular Physics and Optics Renormalization symbols.namesake Hamiltonian lattice gauge theory Classical mechanics Effective field theory symbols Functional renormalization group Covariant Hamiltonian field theory Quantum field theory Hamiltonian (quantum mechanics) Mathematical physics |
| Zdroj: | International Journal of Modern Physics A. 16:1983-1988 |
| ISSN: | 1793-656X 0217-751X |
| Popis: | In this talk we describe a novel method for the renormalization of the Hamiltonian operator in Quantum Field Theory in the spirit of the Wilson renormalization group1. By a series of unitary transformations that successively decouple the high-frequency degrees of freedom and partially diagonalizes the high-energy part, we obtain the effective Hamiltonian for the low energy degrees of freedom. Using this technique we study λϕ4 theory at two loops and QED and Yang-Mills theory at one loop. |
| Databáze: | OpenAIRE |
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