Article (Scientific journals)
Minkowski space structure of the Higgs potential in 2HDM
Ivanov, Igor
2007In Physical Review. D, Particles and Fields, 75, p. 035001 1-20
Peer reviewed
 

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Abstract :
[en] The Higgs potential of 2HDM keeps its generic form under the group of transformation GL(2,C), which is larger than the usually considered reparametrization group SU(2). This reparametrization symmetry induces the Minkowski space structure in the orbit space of 2HDM. Exploiting this property, we present a geometric analysis of the number and properties of stationary points of the most general 2HDM potential. In particular, we prove that charge-breaking and neutral vacua never coexist in 2HDM and establish conditions when the most general explicitly CP-conserving Higgs potential has spontaneously CP-violating minima. We also define the prototypical model of a given 2HDM, which has six free parameters less than the original one but still contains all the essential physics. Our analysis avoids manipulation with high-order algebraic equations.
Disciplines :
Physics
Author, co-author :
Ivanov, Igor ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Interactions fondamentales en physique et astrophysique
Language :
English
Title :
Minkowski space structure of the Higgs potential in 2HDM
Publication date :
2007
Journal title :
Physical Review. D, Particles and Fields
ISSN :
0556-2821
eISSN :
1089-4918
Publisher :
American Physical Society, College Park, United States - Maryland
Volume :
75
Pages :
035001 1-20
Peer reviewed :
Peer reviewed
Available on ORBi :
since 23 July 2010

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