Roman Pasechnik
Senior lecturer
All one-loop scalar vertices in the effective potential approach
Author
Summary, in English
Using the one-loop Coleman-Weinberg effective potential, we derive a general analytic expression for all the derivatives of the effective potential with respect to any number of classical scalar fields. The result is valid for a renormalisable theory in four dimensions with any number of scalars, fermions or gauge bosons. This result corresponds to the zero-external momentum contribution to a general one-loop diagram with N scalar external legs. We illustrate the use of the general result in two simple scalar singlet extensions of the Standard Model, to obtain the dominant contributions to the triple couplings of light scalar particles under the zero external momentum approximation.
Department/s
- Department of Astronomy and Theoretical Physics - Has been reorganised
Publishing year
2016-08-01
Language
English
Publication/Series
Journal of High Energy Physics
Volume
2016
Issue
8
Document type
Journal article
Publisher
Springer
Topic
- Other Physics Topics
Keywords
- Beyond Standard Model
- Higgs Physics
- Spontaneous Symmetry Breaking
Status
Published
ISBN/ISSN/Other
- ISSN: 1029-8479