Built on

J. J. Heckman, C. Lawrie, L. Lin, J. Sakstein and G. Zoccarato, “Pixelated Dark Energy,” arXiv:1901.10489 [hep-th]
Original
1901
Earlier work this paper cites.
W. D. Kenworthy, D. Scolnic and A. Riess, “The Local Perspective on the Hubble Tension: Local Structure Does Not Impact Measurement of the Hubble Constant,” arXiv:1901.08681 [astro-ph.CO]
Original
1901
Earlier work this paper cites.
L. Heisenberg, M. Bartelmann, R. Brandenberger and A. Refregier, “Horndeski in the Swampland,” arXiv:1902.03939 [hep-th]
Original
1902
Earlier work this paper cites.
S. Brahma and M. W. Hossain, “Dark energy beyond quintessence: Constraints from the swampland,” arXiv:1902.11014 [hep-th]
Original
1902
Earlier work this paper cites.
A. G. Riess, S. Casertano, W. Yuan, L. M. Macri and D. Scolnic, “Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM,” arXiv:1903.07603 [astro-ph.CO]
Original
1903
Earlier work this paper cites.
E. Palti, “The Swampland: Introduction and Review,” arXiv:1903.06239 [hep-th]
Original
1903
Earlier work this paper cites.
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Original
1903
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A. G. Riess et al
1998
Earlier work this paper cites.
R. Bousso, “A Covariant entropy conjecture,” JHEP 9907
1999
Earlier work this paper cites.
S. Perlmutter et al
1999
Earlier work this paper cites.
W. Hillebrandt and J. C. Niemeyer, “Type Ia supernova explosion models,” Ann. Rev. Astron. Astrophys. 38
2000
Earlier work this paper cites.

Similar

E. J. Copeland, M. Sami and S. Tsujikawa, “Dynamics of dark energy,” Int. J. Mod. Phys. D 15
2006
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2009
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2011
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R. C. Keenan, A. J. Barger and L. L. Cowie, “Evidence for a 300 Megaparsec Scale Under-density in the Local Galaxy Distribution,” Astrophys. J. 775

Then

N. Aghanim et al
Original
2018
Later among the works it cites.
F. Denef, A. Hebecker and T. Wrase, “de Sitter swampland conjecture and the Higgs potential,” Phys. Rev. D 98
Original
2018
Later among the works it cites.
D. Andriot, “On the de Sitter swampland criterion,” Phys. Lett. B 785
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2018
Later among the works it cites.
P. Agrawal, G. Obied, P. J. Steinhardt and C. Vafa, “On the Cosmological Implications of the String Swampland,” Phys. Lett. B 784
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2018
Later among the works it cites.
L. Heisenberg, M. Bartelmann, R. Brandenberger and A. Refregier, “Dark Energy in the Swampland,” Phys. Rev. D 98
Original

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2019

A hint of matter underdensity at low $z$?

Colgáin, Eoin Ó

Understand

The $\Lambda$CDM cosmological model provides to first approximation a good description of the universe, but various tensions with data, most notably Hubble tension, persist.

In this work we confront $\Lambda$CDM with the Pantheon Type Ia supernovae dataset and perform a two-parameter fit of the distance modulus for a running cut-off $z_{\textrm{max}}$.
We observe that in a window between $z_{\textrm{max}} \approx 0.1$ and $z_{\textrm{max}} \approx 0.16$ there is a 1 - 2 $\sigma$ discrepancy with the Planck value $\omega_m = 0.315 \pm 0.007$, which points to a potential matter underdensity.
For high-energy theorists, the analysis appears to support the de Sitter Swampland conjecture.

Built on

J. J. Heckman, C. Lawrie, L. Lin, J. Sakstein and G. Zoccarato, “Pixelated Dark Energy,” arXiv:1901.10489 [hep-th]
Original
1901
Earlier work this paper cites.
W. D. Kenworthy, D. Scolnic and A. Riess, “The Local Perspective on the Hubble Tension: Local Structure Does Not Impact Measurement of the Hubble Constant,” arXiv:1901.08681 [astro-ph.CO]
Original
1901
Earlier work this paper cites.
L. Heisenberg, M. Bartelmann, R. Brandenberger and A. Refregier, “Horndeski in the Swampland,” arXiv:1902.03939 [hep-th]
Original
1902
Earlier work this paper cites.
S. Brahma and M. W. Hossain, “Dark energy beyond quintessence: Constraints from the swampland,” arXiv:1902.11014 [hep-th]
Original
1902
Earlier work this paper cites.
A. G. Riess, S. Casertano, W. Yuan, L. M. Macri and D. Scolnic, “Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM,” arXiv:1903.07603 [astro-ph.CO]
Original
1903
Earlier work this paper cites.
E. Palti, “The Swampland: Introduction and Review,” arXiv:1903.06239 [hep-th]
Original
1903
Earlier work this paper cites.
D. Scolnic et al
Original
1903
Earlier work this paper cites.
A. G. Riess et al
1998
Earlier work this paper cites.
R. Bousso, “A Covariant entropy conjecture,” JHEP 9907
1999
Earlier work this paper cites.
S. Perlmutter et al
1999
Earlier work this paper cites.
W. Hillebrandt and J. C. Niemeyer, “Type Ia supernova explosion models,” Ann. Rev. Astron. Astrophys. 38
2000
Earlier work this paper cites.

Similar

E. J. Copeland, M. Sami and S. Tsujikawa, “Dynamics of dark energy,” Int. J. Mod. Phys. D 15
2006
Cited alongside, same era.
H. Ooguri and C. Vafa, “On the Geometry of the String Landscape and the Swampland,” Nucl. Phys. B 766
2007
Cited alongside, same era.
A. G. Riess et al
Original
2009
Cited alongside, same era.
A. G. Riess et al
Original
2011
Cited alongside, same era.
C. Heymans et al
Original
2012
Cited alongside, same era.
R. C. Keenan, A. J. Barger and L. L. Cowie, “Evidence for a 300 Megaparsec Scale Under-density in the Local Galaxy Distribution,” Astrophys. J. 775