Nonlinear σ models and supersymmetry-breaking effects in supergravity

Details Nonlinear σ models and supersymmetry-breaking effects in supergravity Nonlinear σ models and supersymmetry-breaking effects in supergravity

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phrvd..45.3636g&link_type=abstract

Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 45, Issue 10, 15 May 1992, pp.3636-3640

Physics

2

Supergravity, Nonlinear Or Nonlocal Theories And Models, Supersymmetry, Spontaneous And Radiative Symmetry Breaking

Scientific paper

Supersymmetry-breaking effects on U(m+n)/U(m)×U(n) nonlinear σ models are studied in the framework of minimal supergravity. It is shown that, in a total doubling realization model, full U(m+n) nonlinearly realized symmetry is retained even after supersymmetry breaking in the hidden sector, while coset symmetry is explicitly broken in the hidden sector coupling in a pure realization model. In a total doubling case, effective superpotential terms as well as soft breaking terms are induced, resulting in superpartners of Nambu-Goldstone bosons (quasi Nambu-Goldstone bosons and fermions) with masses which are determined by the gravitino mass. An application to the Higgs sector in the supersymmetric standard model is also discussed.

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