Beyond basis invariants

Autor(es)

Ivanov, Igor P. ^[1] ; Nishi, Celso C. ^[2] ; Trautner, Andreas ^[3]

Afiliação do(s) autor(es)

^[1] Univ Lisbon, Inst Super Tecn, CFTP, Ave Rovisco Pais 1, P-1049001 Lisbon - Portugal

^[2] Univ Fed ABC, Ctr Matemat Comp & Cognicao, BR-09210170 Santo Andre, SP - Brazil

^[3] Max Planck Inst Kernphys, Saupfercheckweg 1, D-69117 Heidelberg - Germany

• Tipo de documento: Artigo Científico
• Fonte: EUROPEAN PHYSICAL JOURNAL C; v. 79, n. 4 APR 8 2019.
• Citações Web of Science: 2

Resumo

Physical observables cannot depend on the basis one chooses to describe fields. Therefore, all physically relevant properties of a model are, in principle, expressible in terms of basis-invariant combinations of the parameters. However, in many cases it becomes prohibitively difficult to establish key physical features exclusively in terms of basis invariants. Here, we advocate an alternative route in such cases: the formulation of basis-invariant statements in terms of basis-covariant objects. We review several examples where the basis-covariant path is superior to the traditional approach in terms of basis invariants. In particular, this includes the formulation of necessary and sufficient basis-invariant conditions for various physically distinct forms of CP conservation in two- and three-Higgs-doublet models. (AU)

• Processo FAPESP: 14/19164-6 - Desafios para o século XXI em física e astrofísica de neutrinos
• Beneficiário: Orlando Luis Goulart Peres
• Modalidade de apoio: Auxílio à Pesquisa - Projetos Especiais