Inflationary paradigm after Planck 2013

@article{Guth2014InflationaryPA,
  title={Inflationary paradigm after Planck 2013},
  author={Alan Harvey Guth and David I. Kaiser and Yasunori Nomura},
  journal={Physics Letters B},
  year={2014},
  volume={733},
  pages={112-119}
}

Nonminimal Couplings in the Early Universe: Multifield Models of Inflation and the Latest Observations

Models of cosmic inflation suggest that our universe underwent an early phase of accelerated expansion, driven by the dynamics of one or more scalar fields. Inflationary models make specific,

CMB constraints on β-exponential inflationary models

We analyze a class of generalized inflationary models proposed in ref. [1], known as β-exponential inflation. We show that this kind of potential can arise in the context of brane cosmology, where

Inflationary Cosmology after Planck 2013

I give a general review of inflationary cosmology and of its present status, in view of the 2013 data release by the Planck satellite. A specific emphasis is given to the new broad class of theories,

Cosmological consequences of a principle of finite amplitudes

Over 30 years ago, Barrow & Tipler proposed the principle according to which the action integrated over the entire 4-manifold describing the universe should be finite. Here we explore the

Effective field theories as a novel probe of fine-tuning of cosmic inflation

  • Feraz Azhar
  • Economics
    Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics
  • 2020

New inflation in the landscape and typicality of the observed cosmic perturbation

We investigate if the observed small and nearly scale-invariant primordial cosmic perturbation, i.e. the perturbation amplitude $P_\zeta\sim10^{-9}$ and the spectral index $n_s \simeq 0.965$, is

Initial conditions for plateau inflation: a case study

We study initial conditions for inflation in scenarios where the inflaton potential has a plateau shape. Such models are those most favored by Planck data and can be obtained in a large number of

Conflation: a new type of accelerated expansion

In the framework of scalar-tensor theories of gravity, we construct a new kind of cosmological model that conflates inflation and ekpyrosis. During a phase of conflation, the universe undergoes

Assessing the scientific status of inflation after Planck

Inflation is considered as the best theory of the early universe by a very large fraction of cosmologists. However, the validity of a scientific model is not decided by counting the number of its
...

References

SHOWING 1-10 OF 130 REFERENCES

Predictions in eternal inflation

In generic models of cosmological inflation, quantum fluctuations strongly influence the spacetime metric and produce infinitely many regions where the end of inflation (reheating) is delayed until

Inflationary Cosmology after Planck 2013

I give a general review of inflationary cosmology and of its present status, in view of the 2013 data release by the Planck satellite. A specific emphasis is given to the new broad class of theories,

Coherent phase argument for inflation

Cosmologists have developed a phenomenally successful picture of structure in the universe based on the idea that the universe expanded exponentially in its earliest moments. There are three pieces

Cosmological implications of the Higgs mass measurement

We assume the validity of the standard model up to an arbitrary high-energy scale and discuss what information on the early stages of the Universe can be extracted from a measurement of the Higgs

Inflationary paradigm in trouble after Planck2013

Inflationary Cosmology: Exploring the Universe from the Smallest to the Largest Scales

TLDR
Inflation makes several predictions about the present state of the universe—such as its overall shape, large-scale smoothness, and smaller scale structure—which are being tested to unprecedented accuracy by a new generation of astronomical measurements.

What does inflation really predict?

If the inflaton potential has multiple minima, as may be expected in, e.g., the string theory ‘landscape’, inflation predicts a probability distribution for the cosmological parameters describing

The inflationary Universe

According to the inflationary Universe scenario the Universe in the very early stages of its evolution was exponentially expanding in the unstable vacuumlike state. At the end of the exponential
...