REVIEW 6 cited by
Dark Energy Radiation
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
abstract
We show that if dark energy evolves in time, its dynamical component could be dominated by a bath of dark radiation. Within current constraints this radiation could have up to $\sim 10^4$ times more energy density than the cosmic microwave background. We demonstrate particular models in which a rolling scalar field generates different forms of dark radiation such as hidden photons, milli-charged particles and even Standard Model neutrinos. We find the leading effect on the late-time cosmological expansion history depends on a single parameter beyond $\Lambda$CDM, namely the temperature of the dark radiation today. Cosmological observations of this modified expansion rate could provide a striking signature of this scenario. The dark radiation itself could even be directly detectable in laboratory experiments, suggesting a broader experimental program into the nature of dark energy.
Forward citations
Cited by 6 Pith papers
-
WI2easy: warm inflation dynamics made easy
WI2easy provides a public Mathematica implementation that computes warm inflation dynamics and curvature perturbation spectra via a deterministic Fokker-Planck approach, and shows that the universality of the G(Q) cor...
-
Warm multi natural inflation
In warm multi-natural inflation with a cubic temperature dissipation coefficient, the curvature power spectrum grows sharply after the weak-to-strong dissipation transition, generating detectable scalar-induced gravit...
-
QCD Axion Dark Matter from level crossing with refined adiabatic condition
Adiabatic level crossing between a QCD axion and an ALP can convert ALP dark matter into QCD axion dark matter, and a beat-frequency-based adiabatic condition maps the viable parameter region.
-
Direct Deflection of Millicharged Radiation
A future superconducting radio-frequency cavity experiment could detect relativistic millicharged particles by picking up the tiny currents their plasma induces in a nearby shielded cavity.
-
Viability of warm inflation with standard model interactions
Using the WI2easy code, the Standard Model gluon-coupled warm inflation model remains viable, with a Hubble-exit dissipation ratio Q* between 0.0076 and 30 and inflaton thermalization for Q* above about 0.08.
-
Probing Long-Range Forces Between Neutrinos with Cosmic Structures
Neutrino long-range forces stronger than gravity would make the cosmic neutrino background collapse into bound states, and existing matter power spectrum and reionization data now exclude a band of couplings for force...
Discussion (0). Continue with ORCID to comment.