Ripples in spacetime from broken supersymmetry

Nathaniel Craig, Noam Levi, Alberto Mariotti, Diego Redigolo

Research output: Contribution to journalArticlepeer-review

Abstract

We initiate the study of gravitational wave (GW) signals from first-order phase transitions in supersymmetry-breaking hidden sectors. Such phase transitions often occur along a pseudo-flat direction universally related to supersymmetry (SUSY) breaking in hidden sectors that spontaneously break R-symmetry. The potential along this pseudo-flat direction imbues the phase transition with a number of novel properties, including a nucleation temperature well below the scale of heavy states (such that the temperature dependence is captured by the low-temperature expansion) and significant friction induced by the same heavy states as they pass through bubble walls. In low-energy SUSY-breaking hidden sectors, the frequency of the GW signal arising from such a phase transition is guaranteed to lie within the reach of future interferometers given existing cosmological constraints on the gravitino abundance. Once a mediation scheme is specified, the frequency of the GW peak correlates with the superpartner spectrum. Current bounds on supersymmetry are compatible with GW signals at future interferometers, while the observation of a GW signal from a SUSY-breaking hidden sector would imply superpartners within reach of future colliders.

Original languageEnglish
Article number184
JournalJournal of High Energy Physics
Volume2021
Issue number2
DOIs
StatePublished - Feb 2021

Keywords

  • Cosmology of Theories beyond the SM
  • Supersymmetric Effective Theories
  • Supersymmetry Breaking
  • Thermal Field Theory

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