Extra-dimensional Origins of Chemical Potentials at the Cosmological Collider

arXiv:2608.00158 · hep-ph, astro-ph.CO · Submitted 2026-07-31 · Read on arXiv

University of Maryland, College Park · University of Maryland, College Park

hep-ph, astro-ph.CO

Submitted: 2026-07-31

Updated: 2026-10-23

Comments: 34 pages, 4 figures

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Bispectrum — 10× in this paper · explained in 3 episodes
• Non-Gaussianity — 7× in this paper · explained in 2 episodes
• Benchmark — 5× in this paper · explained in 2 episodes
• Effective Field Theory — 4× in this paper
• Primordial non-Gaussianity — 4× in this paper · explained in 2 episodes
• Weak Gravity Conjecture — 4× in this paper
• Generalization — 3× in this paper · explained in 13 episodes
• Large Scale Structure — 3× in this paper
• Symmetry Breaking — 3× in this paper · explained in 3 episodes
• Adam — 1× in this paper · explained in 2 episodes
• Anisotropy — 1× in this paper · explained in 3 episodes
• Cosmic Microwave Background — 1× in this paper
• Domain Walls — 1× in this paper · explained in 2 episodes
• Effective Field Theory (EFT) — 1× in this paper · explained in 2 episodes
• Reheating — 1× in this paper · explained in 2 episodes

Sources

• Quasi-Single Field Inflation and Non-Gaussianities
• Quasi-Single Field Inflation with Large Mass
• Effective field theory approach to quasi-single field inflation and effects of heavy fields
• On Soft Limits of Inflationary Correlation Functions
• Cosmological Collider Physics
• Non-Gaussianity as a Particle Detector
• CMB-S4 forecast on the primordial non-Gaussianity parameter of feature models
• PICO: Probe of Inflation and Cosmic Origins
• Testing Inflation with Large Scale Structure: Connecting Hopes with Reality
• Cosmology with the SPHEREX All-Sky Spectral Survey
• Probing primordial non-Gaussianity with SKA galaxy redshift surveys: a fully relativistic analysis
• Scale-Dependent Galaxy Bias from Massive Particles with Spin during Inflation
• Galaxy Bispectrum from Massive Spinning Particles
• Galaxy imaging surveys as spin-sensitive detector for cosmological colliders
• Euclid. I. Overview of the Euclid mission
• Primordial non-gaussianity from the bispectrum of 21-cm fluctuations in the dark ages
• Prospects for Cosmological Collider Physics
• Phenomenology of a Pseudo-Scalar Inflaton: Naturally Large Nongaussianity
• Neutrino Signatures in Primordial Non-Gaussianities
• Phenomenology of fermion production during axion inflation

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