Unitary renormalization of [φ4]2+1
✍ Scribed by Paul Federbush
- Publisher
- Springer
- Year
- 1971
- Tongue
- English
- Weight
- 400 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0010-3616
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📜 SIMILAR VOLUMES
We investigate the time-dependent variational equations in \(\phi^{4}\) field theory. We show that the standard method for renormalization applies to these time-dependent equations. The crucial point is to use the hamiltonian nature of the variational principle. In particular we have considered smal
U(N) symmetric three-dimensional (I$')~ theory is studied in the l/N expansion, using quantum field theory techniques. An effective action containing the composite operator +2 is used. It is shown to be renormalizable in each order of the l/N expansion. The lirst two orders are considered. A vacuum