Probing the curvature of the Universe from supernova measurement

@article{Wang2004ProbingTC,
  title={Probing the curvature of the Universe from supernova measurement},
  author={Bin Wang and Yungui Gong and Ru-keng Su},
  journal={Physics Letters B},
  year={2004},
  volume={605},
  pages={9-14}
}

Figures from this paper

Age problem in the holographic dark energy model

In this paper, we test the original holographic dark energy model with some old high redshift objects. The main idea is very simple: the universe cannot be younger than its constituents. We find that

Uncertainty on Determining the Dark Energy Equation of State due to the Spatial Curvature

We have studied the uncertainty on the determination of the dark energy equation of state due to a nonvanishing spatial curvature by considering some fundamental observables. We discussed the

Constraints on Dark Energy Models from Weak Gravity Conjecture

We study the constraints on the dark energy model with constant equation of state parameter w = p/ρ and the holographic dark energy model by using the weak gravity conjecture. The combination of weak

Measurement on the cosmic curvature using the Gaussian process method

Inflation predicts that the Universe is spatially flat. The Planck 2018 measurements of the cosmic microwave background anisotropy favour a spatially closed universe at more than 2σ confidence

Direct evidence of acceleration from a distance modulus–redshift graph

The energy conditions give upper bounds on the luminosity distance. We apply these upper bounds to the 192 ESSENCE supernova Ia data to show that the Universe has experienced accelerated expansion.

Interacting holographic tachyon model of dark energy

We propose a holographic tachyon model of dark energy with interaction between the components of the dark sector. The correspondence between the tachyon field and the holographic dark energy

Super-acceleration on the brane through energy flow from the bulk

We consider a brane cosmological model with energy exchange between the brane and the bulk. Parametrizing the energy exchange term using the scale factor and Hubble parameter, we are able to exactly

Model independent measurement on the cosmic curvature

Inflation predicts that the Universe is spatially flat. The Planck 2018 measurements of the cosmic microwave background anisotropy favour a spatially closed universe at more than 2$\sigma$ confidence

References

SHOWING 1-10 OF 36 REFERENCES

Accelerated universe from gravity leaking to extra dimensions

We discuss the idea that the accelerated universe could be the result of gravitational leakage into extra dimensions over Hubble distances rather than the consequence of a nonzero cosmological

The Accelerated universe and the moon

Cosmologically motivated theories that explain small acceleration rate of the Universe via modification of gravity at very large, horizon or super-horizon distances, can be tested by precision

Constraints on alternative models to dark energy

Recent observations of type Ia supernovae strongly support that the universe is accelerating now and decelerated in the recent past. This may be evidence of the breakdown of the standard Friedmann

A NEW ALTERNATIVE MODEL TO DARK ENERGY

The recent observations of type Ia supernovae strongly support that the universe is accelerating now and decelerated in the recent past. This may be the evidence of the breakdown of the standard

Probing gravitation, dark energy, and acceleration

The acceleration of the expansion of the universe arises from unknown physical processes involving either new fields in high energy physics or modifications of gravitation theory. It is crucial for

Gravitational leakage into extra dimensions: Probing dark energy using local gravity

The braneworld model of Dvali-Gabadadze-Porrati (DGP) is a theory where gravity is modified at large distances by the arrested leakage of gravitons off our four-dimensional universe. Cosmology in

Supernova constraints on a holographic dark energy model

In this paper, we use the type Ia supernova data to constrain the model of holographic dark energy. For d = 1, the best fit result is Ωm0 = 0.25, the equation of the state of the holographic dark

Gravity on a brane in infinite volume extra space

We generalize the mechanism proposed in a previous paper and show that a four-dimensional relativistic tensor theory of gravitation can be obtained on a delta-function brane in flat infinite-volume

A Measurement by BOOMERANG of Multiple Peaks in the Angular Power Spectrum of the Cosmic Microwave Background

This paper presents a measurement of the angular power spectrum of the cosmic microwave background from l = 75 to l = 1025 (~10' to 2.°4) from a combined analysis of four 150 GHz channels in the

Supernova constraints on alternative models to dark energy

The recent observations of type Ia supernovae suggest that the universe is accelerating now and decelerated in the recent past. This may be the evidence of the breakdown of the standard Friedmann