Constraining spacetime variations of nuclear decay rates from light curves of type Ia supernovae

Karpikov, I.; Piskunov, Maxim; Sokolov, Anton V.; Troitsky, S.

doi:10.1103/physrevd.91.127301

Cited by 3 publications

(4 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The conditions (33), and |y| ≪ 1, are valid for this bound. The bound (34) is at 5 orders of magnitude better than the direct collider bound from Tevatron [30] (see also the prospect for a collider bound for LHC [31]).…”

Section: Experimental Constraints On LV In Fermion Sector From Photonmentioning

confidence: 83%

See 1 more Smart Citation

One-loop correction to the photon velocity in Lorentz-violating QED

Satunin

2018

Phys. Rev. D

View full text Add to dashboard Cite

We calculate a finite momentum-dependent part of the photon polarization operator in a simple model of Lorentz-violating quantum electrodynamics nonperturbatively at all orders of Lorentz-violating parameters. We sum one-particle reducible diagrams into the modified photon propagator and determine the physical photon dispersion relation as the location of its pole. The photon dispersion relation, as well as its group velocity, acquires the one-loop momentum-dependent radiative correction. We constrain the Lorentz-violating parameters for heavy charged fermions (muon, τ lepton, and top quark) from the photon timing observations.

show abstract

Section: Experimental Constraints On LV In Fermion Sector From Photonmentioning

confidence: 83%

“…For light quarks this analysis fails; one should consider the case y ≫ 1. The bounds on c e for light quarks and/or mesons may be a scope of a separate work and should be compared with collider bounds [32,33].…”

Section: Experimental Constraints On LV In Fermion Sector From Photonmentioning

confidence: 99%

One-loop correction to the photon velocity in Lorentz-violating QED

Satunin

2018

Phys. Rev. D

View full text Add to dashboard Cite

show abstract

“…One can also investigate the effect of the variation of fundamental constants on gravitational observables, such as black holes and WDs [200][201][202]. Or one can also investigate the time variation of other fundamental constants related to particle physics, like the Fermi constant G F [203,204].…”

Section: Jcap08(2021)054mentioning

confidence: 99%

The minimally extended Varying Speed of Light (meVSL)

Lee

2021

J. Cosmol. Astropart. Phys.

View full text Add to dashboard Cite

Even though there have been various models of the time-varying speed of light (VSL), they remain out of the mainstream because of their possible violation of physics laws built into fundamental physics. In order to be the VSL as a viable theory, it should inherit the success of special relativity including Maxwell equations and thermodynamics at least. For this purpose, we adopt the assumption that the speed of light, c̃, i.e., c̃[a], varies for the scale factor, a. The background FLRW universe can be defined by the constant cosmic time hypersurface using physical quantities such as temperature, density, c̃, etc. It is because they evolve in cosmic time and the homogeneity of the Universe demands that they must equal at the equal cosmic time. The variation of c̃ accompanies the joint variations of all related physical constants in order to satisfy the Lorentz invariance, thermodynamics, Bianchi identity, etc. We dub this VSL model as a “minimally extended VSL (meVSL)”. We derive cosmological observables of meVSL and obtain the constraints on the variation of c̃ by using current cosmological observations. Interestingly, both the cosmological redshift z and all geometrical distances except the luminosity distance of meVSL are the same as those of general relativity. However, the Hubble parameter of meVSL is rescaled as H(z) = (1+z)-b/4 H(GR)(z), where H(GR)(z) denotes the Hubble parameter obtained from general relativity. Thus, it might be used as an alternative solution for the tension of the Hubble parameter measurements. In this manuscript, we provide the main effects of the meVSL model on various cosmological observations including BBN, CMB, SZE, BAO, SNe, GWs, H, SL, and Δα. Compared to previous VSL models, meVSL might provide alternative solutions for various late time problems of the standard ΛCDM model. This is the main motivation for proposing the meVSL model.

show abstract

“…One can also investigate the effect of the variation of fundamental constants on gravitational observables, such as black holes and WDs [197][198][199]. Or one can also investigate the time variation of other fundamental constants related to particle physics, like the Fermi constant G F [200,201].…”

Section: Introductionmentioning

confidence: 99%

The minimally extended Varying Speed of Light (meVSL)

Lee

2020

Preprint

View full text Add to dashboard Cite

Even though there have been the various varying speed of light (VSL) cosmology models, they remain out of the mainstream because of their possible violation of physics laws built into fundamental physics. In order to be the VSL as a viable theory, it should inherit the success of special relativity including Maxwell equations and thermodynamics at least. Thus, we adopt that the speed of light, c varies for the cosmic time not for the local time, i.e., c[z] where z is the cosmological redshift.When one describes the background FLRW universe, one can define the constanttime hypersurface by using physical quantities such as temperature, density, and c.It is because they evolve in time, and the homogeneity of the Universe demands that they must equal at the equal cosmic time. The variation of c accompanies the joint variations of all related physical constants in order to satisfy the Lorentz invariance, thermodynamics, and Bianchi identity. We call this VSL model as a "minimally extended VSL (meVSL)". We derive cosmological observables of meVSL and obtain the constraints on the variation of c by using the current observations. Interestingly, z and all geometrical distances except the luminosity distance of meVSL are the same as those of general relativity. However, the Hubble parameter of meVSL is rescaled as H = (1 + z) −b/4 H (GR) which might be used as a solution for the tension of the Hubble parameter measurements. In this manuscript, we provide the main effects of meVSL on various cosmological observations including BBN, CMB, SZE, BAO, SNe, GWs, H, SL, and ∆α.

show abstract

Constraining spacetime variations of nuclear decay rates from light curves of type Ia supernovae

Cited by 3 publications

References 28 publications

One-loop correction to the photon velocity in Lorentz-violating QED

One-loop correction to the photon velocity in Lorentz-violating QED

The minimally extended Varying Speed of Light (meVSL)

The minimally extended Varying Speed of Light (meVSL)

Contact Info

Product

Resources

About