Grand Unification at the Cosmological Collider with Chemical Potential

Abstract

We introduce a tree-level chemical potential mechanism for spin-1 particles within cosmological collider physics, allowing them to be detected in primordial non-Gaussianities for masses above the inflationary Hubble scale. We apply this mechanism to orbifold grand unification and the massive unification partners of the standard model gauge bosons. Our mechanism requires at least a pair of massive vector fields which are singlets of the standard model, a condition which is satisfied in the classic "trinification" scenario. Assuming that the gauge hierarchy problem is solved by supersymmetry, gauge coupling running points to unification partners at ~ $10^{15}$ GeV. We show that, within high-scale inflation, chemical potential enhancement can lead to observably strong signals for trinification partners in future cosmological surveys.

33 pages, 7 figures

References in corpus (8)

• Non-Gaussianity as a Particle Detector
• The Scalar Chemical Potential in Cosmological Collider Physics
• Large Spin-2 Signals at the Cosmological Collider
• Scale-Dependent Galaxy Bias from Massive Particles with Spin during Inflation
• Galaxy imaging surveys as spin-sensitive detector for cosmological colliders
• Chemical-Potential-Assisted Particle Production in FRW Spacetimes
• Searching for Cosmological Collider in the Planck CMB Data
• Proton decay

Cited by in corpus (4)

• The Massive Flat Space Limit of Cosmological Correlators
• Charged Loops at the Cosmological Collider with Chemical Potential
• Amplifying the Cosmological Collider with Ghost Spectators
• Non-relativistic Cosmological Collider Signals