Scalar field theory in 3+1 dimensions
We study the existence of a stable ground state for the most general renormalizable single scalar field theory in four dimensions within a variational approach. In its regularized version we find a theory with an energy density which is not bound from below but with a metastable local minimum such t...
| Autores: | , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 1985 |
| País: | España |
| Recursos: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/12434 |
| Acesso em linha: | https://hdl.handle.net/2445/12434 |
| Access Level: | acceso abierto |
| Palavra-chave: | Teoria quàntica Teoria de camps (Física) Partícules (Física nuclear) Relativitat especial (Física) Quantum theory Field theory (Physics) Particles (Nuclear physics) Special relativity (Physics) |
| Resumo: | We study the existence of a stable ground state for the most general renormalizable single scalar field theory in four dimensions within a variational approach. In its regularized version we find a theory with an energy density which is not bound from below but with a metastable local minimum such that when the cutoff is removed the theory is interacting, finite, and possesses a stable ground state. In fact, we find that this theory is not stable unless it is symmetric. This generalizes Stevenson’s recent results on even φ 4 theory. |
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