Phenomenology of a vector-field-induced (and possibly parity breaking) compensated isocurvature perturbation
arXiv:2311.18121 · doi:10.1103/PhysRevD.109.083510
Abstract
It is natural to wonder whether there may be observational relics of new fundamental fields, beyond the inflaton, in large scale structure. Here we discuss the phenomenology of a model in which compensated isocurvature perturbations (CIPs) arise through the action of a primordial vector field that displaces dark matter relative to baryons. The model can be tested best by kinematic-Sunyaev-Zeldovich tomography, which involves the cross-correlation of cosmic microwave background and galaxy surveys, with next-generation observatories. There are also signatures of the vectorial nature of the new field that may be detectable in forthcoming galaxy surveys, but the galaxy survey cannot alone indicate the presence of a CIP. Models that induce a parity breaking four-point correlation in the galaxy distribution are also possible.
References in corpus (18)
- Generating the curvature perturbation without an inflaton
- Asymmetric Dark Matter
- Asymmetric Dark Matter: Theories, Signatures, and Constraints
- Clustering Fossils from the Early Universe
- Probing Parity-Violation with the Four-Point Correlation Function of BOSS Galaxies
- Measurement of Parity-Odd Modes in the Large-Scale 4-Point Correlation Function of SDSS BOSS DR12 CMASS and LOWZ Galaxies
- Correlation of inflation-produced magnetic fields with scalar fluctuations
- Large Spin-2 Signals at the Cosmological Collider
- Compensated Isocurvature Perturbations and the Cosmic Microwave Background
- Colliding Ghosts: Constraining Inflation with the Parity-Odd Galaxy Four-Point Function
- Forecasted 21 cm constraints on compensated isocurvature perturbations
- On Possible Variation in the Cosmological Baryon Fraction
- Fast full N-body simulations of generic modified gravity: conformal coupling models
- Do baryons trace dark matter in the early universe?
- Hopf algebra of ribbon graphs and renormalization
- Primordial Density Perturbations from Magnetic Fields
- Compensated Isocurvature Perturbations in the Galaxy Power Spectrum
- Uncorrelated Compensated Isocurvature Perturbations from kSZ Tomography