Did the nHZ Gravitational Waves Signatures Observed By NANOGrav Indicate Multiple Sector SUSY Breaking?

Understand

Discrete R symmetries always play an important role in low energy SUSY.

• The spontaneously broken of such discrete R symmetries, for example, by gaugino condensation, can lead to domain walls, which need to be either inflated away or collapse to avoid cosmic difficulties.
• We propose that explicitly R symmetry violation needed for collapse of domain walls can be the consequence of multiple sector SUSY breaking.
• The consistency constraints for the generation of non-problematic domain walls from gaugino condensation are discussed.