Symmetry of Cosmological Observables, a Mirror World Dark Sector, and the Hubble Constant.

@article{CyrRacine2022SymmetryOC,
  title={Symmetry of Cosmological Observables, a Mirror World Dark Sector, and the Hubble Constant.},
  author={Francis-Yan Cyr-Racine and Fei Ge and Lloyd Knox},
  journal={Physical review letters},
  year={2022},
  volume={128 20},
  pages={
          201301
        }
}
We find that a uniform scaling of the gravitational free-fall rates and photon-electron scattering rate leaves most dimensionless cosmological observables nearly invariant. This result opens up a new approach to reconciling cosmic microwave background and large-scale structure observations with high values of the Hubble constant H_{0}: Find a cosmological model in which the scaling transformation can be realized without violating any measurements of quantities not protected by the symmetry. A… 

Figures and Tables from this paper

Scaling Transformations and the Origins of Light Relics Constraints from Cosmic Microwave Background Observations

We use here a family of scaling transformations, that scale key rates in the evolution equations, to analytically understand constraints on light relics from cosmic microwave background (CMB) maps,

Mirror Dark Sector Solution of the Hubble Tension with Time-varying Fine-structure Constant

We explore a model introduced by Cyr-Racine, Ge, and Knox [1] that resolves the Hubble tension by invoking a “mirror world” dark sector with energy density a fixed fraction of the “ordinary” sector of

Uni ed Modeling that Explains Dark Matter Data, Dark Energy E ects, and Galaxy Formation Stages

Physics lacks a con rmed description of dark matter, has yet to develop an adequate understanding of dark energy, and includes unveri ed conjectures regarding new elementary particles. This essay

Revisiting a Cosmological Conundrum

I f a single number describes the history and fate of the Universe, it’s the Hubble constant, H0, which quantifies the speed at which galaxies move away from us. But researchers measuring H0 find

Dark Black Holes in the Mass Gap

. In the standard picture of stellar evolution, pair-instability – the energy loss in stellar cores due to electron-positron pair production – is predicted to prevent the collapse of massive stars

Properties of Tiny Objects and Vast Things

Physics has yet to complete a catalog of properties of objects, complete a list of elementary particles, describe dark matter, and explain dark energy phenomena. This paper shows modeling that

Universal Grammar, the Mirror Universe Hypothesis and Kinesiological Thinking

. A semiotics is presented based on the kinesiological movement of vision that carries three categories, coming as a projection, reflection and a middle-term that joins the two. This is presented as

Color Afterimages as Innate Memories as Hypothesized by the Mirror Universe Theory

. This paper considers two explanations for negative color afterimages: that they are the result of overstimulation of the retina, or that they are a result of training and are part of an innate

References

SHOWING 1-10 OF 177 REFERENCES

Cosmological constraints on mirror matter parameters

Up-to-date estimates of the cosmological parameters are presented as a result of numerical simulations of cosmic microwave background and large scale structure, considering a flat Universe in which

Cosmological constraints on decoupled dark photons and dark Higgs

Any neutral boson such as a dark photon or dark Higgs that is part of a non-standard sector of particles can mix with its standard model counterpart. When very weakly mixed with the Standard Model,

Cosmological Perturbation Theory in the Synchronous and Conformal Newtonian Gauges

This paper presents a systematic treatment of the linear theory of scalar gravitational perturbations in the synchronous gauge and the conformal Newtonian (or longitudinal) gauge. It differs from

Dark atoms: asymmetry and direct detection

We present a simple UV completion of Atomic Dark Matter (aDM) in which heavy right-handed neutrinos decay to induce both dark and lepton number densities. This model addresses several outstanding

Efficient cosmological analysis of the SDSS/BOSS data from the Effective Field Theory of Large-Scale Structure

The precision of the cosmological data allows us to accurately approximate the predictions for cosmological observables by Taylor expanding up to a low order the dependence on the cosmological

Cosmological parameters from the BOSS galaxy power spectrum

We present cosmological parameter measurements from the publicly available Baryon Oscillation Spectroscopic Survey (BOSS) data on anisotropic galaxy clustering in Fourier space. Compared to previous

Nearly Supersymmetric Dark Atoms

Theories of dark matter that support bound states are an intriguing possibility for the identity of the missing mass of the Universe. This article proposes a class of models of supersymmetric

Make dark matter charged again

We revisit constraints on dark matter that is charged under a U(1) gauge group in the dark sector, decoupled from Standard Model forces. We find that the strongest constraints in the literature are

Phases of new physics in the CMB

Fluctuations in the cosmic neutrino background are known to produce a phase shift in the acoustic peaks of the cosmic microwave background. It is through the sensitivity to this effect that the
...