Charged Loops at the Cosmological Collider with Chemical Potential
arXiv:2507.22978 · doi:10.1007/JHEP01(2026)083
Abstract
Cosmological collider physics allows the detection of heavy particles at inflationary scales through their imprints on primordial non-Gaussianities. We study the chemical potential mechanism applied to a pair of charged scalars. We analytically evaluate the resulting one-loop contribution to the bispectrum, using the spectral decomposition. In this way we are able to determine the parametric dependences for both the signal and the background. We show that a signal strength can be obtained within theoretical control, potentially reachable by 21cm tomography. As an application we consider the colored Higgs bosons in supersymmetric orbifold grand unification with masses .
arXiv comment71 pages, 25 figures; typos corrected, references added, revised argument in section 3.2, 6 and 7.2, results unchanged
References in corpus (46)
- The Effective Field Theory of Inflation
- Quantum Contributions to Cosmological Correlations
- Single field consistency relation for the 3-point function
- Quasi-Single Field Inflation and Non-Gaussianities
- Gauge Unification in Higher Dimensions
- Natural Chaotic Inflation in Supergravity
- Triplet-doublet Splitting, Proton Stability and Extra Dimension
- Measuring the Small-Scale Power Spectrum of Cosmic Density Fluctuations Through 21 cm Tomography Prior to the Epoch of Structure Formation
- Signatures of Supersymmetry from the Early Universe
- On Soft Limits of Inflationary Correlation Functions
- Gauge Symmetry Reduction from the Extra Space
- Phenomenology of a Pseudo-Scalar Inflaton: Naturally Large Nongaussianity
- Effective field theory approach to quasi-single field inflation and effects of heavy fields
- Non-Gaussianity as a Particle Detector
- General inflaton potentials in supergravity
- On Loops in Inflation
- The IR stability of de Sitter: Loop corrections to scalar propagators
- Quasi-Single Field Inflation with Large Mass
- A Mellin Space Approach to Cosmological Correlators
- Gauge Coupling Unification from Unified Theories in Higher Dimensions
- Prospects for Cosmological Collider Physics
- A Complete Theory of Grand Unification in Five Dimensions
- Primordial non-gaussianity from the bispectrum of 21-cm fluctuations in the dark ages
- On Loops in Inflation III: Time Independence of zeta in Single Clock Inflation
- Heavy-Lifting of Gauge Theories By Cosmic Inflation
- Standard Model Mass Spectrum in Inflationary Universe
- In Search of Large Signals at the Cosmological Collider
- On Loops in Inflation II: IR Effects in Single Clock Inflation
- Neutrino Signatures in Primordial Non-Gaussianities
- Galaxy Bispectrum from Massive Spinning Particles
- The Scalar Chemical Potential in Cosmological Collider Physics
- Seeing Higher-Dimensional Grand Unification In Primordial Non-Gaussianities
- Higher Spin Supersymmetry at the Cosmological Collider: Sculpting SUSY Rilles in the CMB
- Phenomenology of fermion production during axion inflation
- Gauge Boson Signals at the Cosmological Collider
- Large Spin-2 Signals at the Cosmological Collider
- Triangular invariants, three-point functions and particle stability on the de Sitter universe
- Phase Information in Cosmological Collider Signals
- Bootstrapping One-Loop Inflation Correlators with the Spectral Decomposition
- Precision Calculation of Inflation Correlators at One Loop
- Scale-Dependent Galaxy Bias from Massive Particles with Spin during Inflation
- The Källén-Lehmann representation in de Sitter spacetime
- Galaxy imaging surveys as spin-sensitive detector for cosmological colliders
- On one-loop corrections to the Bunch-Davies wavefunction of the universe
- Grand Unification at the Cosmological Collider with Chemical Potential
- Bananas are Unparticles: Differential Equations and Cosmological Bootstrap