T-Model Higgs Inflation and Metastable Cosmic Strings

Understand

We present the formation of metastable cosmic strings (CSs) in the context of a supersymmetric (SUSY) left-right model.

• The SU(2)R symmetry breaking occurs during a stage of T-model (Higgs) inflation (TI) driven by an SU(2)R triplet superfield which inflates away the produced monopoles.
• The subsequent breaking of the remaining U(1)R x U(1)B-L symmetry, triggered due to an instability arising in the system of a pair of SU(2)R doublet superfields, leads to the production of CSs.
• TI is based on a quartic potential, is consistent with data thanks to the adopted hyperbolic Kaehler geometry and may be followed by successful non-thermal leptogenesis.