Probable or improbable universe? Correlating electroweak vacuum instability with the scale of inflation

@article{Hook2015ProbableOI,
  title={Probable or improbable universe? Correlating electroweak vacuum instability with the scale of inflation},
  author={Anson Hook and John Kearney and Bibhushan Shakya and Kathryn M. Zurek},
  journal={Journal of High Energy Physics},
  year={2015},
  volume={2015},
  pages={1-21}
}
A bstractMeasurements of the Higgs boson and top quark masses indicate that the Standard Model Higgs potential becomes unstable around ΛI ∼ 1011 GeV. This instability is cosmologically relevant since quantum fluctuations during inflation can easily destabilize the electroweak vacuum if the Hubble parameter during inflation is larger than ΛI (as preferred by the recent BICEP2 measurement). We perform a careful study of the evolution of the Higgs field during inflation, obtaining different… 

Is a Higgs Vacuum Instability Fatal for High-Scale Inflation?

We study the inflationary evolution of a scalar field h with an unstable potential for the case where the Hubble parameter H during inflation is larger than the instability scale ΛI of the potential.

Electroweak vacuum instability and renormalized Higgs field vacuum fluctuations in the inflationary universe

In this work, we investigated the electroweak vacuum instability during or after inflation. In the inflationary Universe, i.e., de Sitter space, the vacuum field fluctuations < δ ϕ 2 > enlarge in

Instability of the electroweak vacuum in Starobinsky inflation

We study the stability of the electroweak vacuum during and after the Starobinky inflation, assuming the existence of the non-minimal Higgs coupling to the Ricci scalar. In the Starobinsky inflation,

Higgs instability and de Sitter radiation

Vacuum stability in the early universe and the backreaction of classical gravity

  • T. Markkanen
  • Physics
    Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2018
TLDR
For the minimal set up of the standard model and a decoupled inflation sector it is shown how a metastable vacuum can lead to very tight bounds for the non-minimal coupling.

Electroweak stability and non-minimal coupling

The measured values of the Higgs and top quark mass indicate that the electroweak vacuum is metastable if there is no new physics below the Planck scale. This is at odds with a period of high scale

Higgs dynamics during inflation

We investigate inflationary Higgs dynamics and constraints on the Standard Model parameters assuming the Higgs potential, computed to next-to-next leading order precision, is not significantly

On the cosmological stability of the Higgs instability

The Standard Model Higgs potential becomes unstable at large Higgs field values where its quartic coupling becomes negative. While the tunneling lifetime of our current electroweak vacuum is

Aspects of Higgs Inflation

The earliest stage in the history of the universe is successfully modelled by cosmic inflation, a period of nearly exponential expansion. Due to inflation, the universe became spatially flat, old,
...

References

SHOWING 1-10 OF 36 REFERENCES

Electroweak Vacuum Stability in Light of BICEP2

We consider the effect of a period of inflation with a high energy density upon the stability of the Higgs potential in the early universe. The recent measurement of a large tensor-to-scalar ratio,

Higgs dynamics during inflation

We investigate inflationary Higgs dynamics and constraints on the Standard Model parameters assuming the Higgs potential, computed to next-to-next leading order precision, is not significantly

The Higgs vacuum is unstable

So far, the experiments at the Large Hadron Collider (LHC) have shown no sign of new physics beyond the Standard Model. Assuming the Standard Model is correct at presently available energies, we can

THE COSMOLOGICAL CONSTANT PROBLEM AND INFLATION IN THE STRING LANDSCAPE

An earlier paper points out that a quantum treatment of the string landscape is necessary. It suggests that the wave function of the universe is mobile in the landscape until the universe reaches a

The universal Higgs fit

A bstractWe perform a state-of-the-art global fit to all Higgs data. We synthesise them into a ‘universal’ form, which allows to easily test any desired model. We apply the proposed methodology to

Investigating the near-criticality of the Higgs boson

A bstractWe extract from data the parameters of the Higgs potential, the top Yukawa coupling and the electroweak gauge couplings with full 2-loop NNLO precision, and we extrapolate the SM parameters

Stochastic approach to tunneling and baby universe formation

STOCHASTIC DE SITTER (INFLATIONARY) STAGE IN THE EARLY UNIVERSE

The dynamics of a large-scale quasi-homogeneous scalar field producing the de Sitter (inflationary) stage in the early universe is strongly affected by small-scale quantum fluctuations of the same