Built on

K.L. Pandey, T. Karwal and S. Das, Alleviating the H 0 H_{0} and σ 8 \sigma_{8} anomalies with a decaying dark matter model , JCAP 07
Original
1902
Earlier work this paper cites.
K. Vattis, S.M. Koushiappas and A. Loeb, Dark matter decaying in the late Universe can relieve the H0 tension , Phys. Rev. D 99
Original
1903
Earlier work this paper cites.
D. Lüst, E. Palti and C. Vafa, AdS and the Swampland , Phys. Lett. B 797
Original
1906
Earlier work this paper cites.
P. Agrawal, G. Obied and C. Vafa, H 0 H_{0} tension, swampland conjectures, and the epoch of fading dark matter , Phys. Rev. D 103
Original
1906
Earlier work this paper cites.
A. Ejlli, D. Ejlli, A.M. Cruise, G. Pisano and H. Grote, Upper limits on the amplitude of ultra-high-frequency gravitational waves from graviton to photon conversion , Eur. Phys. J. C 79
Original
1908
Earlier work this paper cites.
A. Bedroya and C. Vafa, Trans-Planckian Censorship and the Swampland , JHEP 09
Original
1909
Earlier work this paper cites.
S.-J. Lee, W. Lerche and T. Weigand, Emergent strings from infinite distance limits , JHEP 02
Original
1910
Earlier work this paper cites.
S. Weinberg, Anthropic Bound on the Cosmological Constant , Phys. Rev. Lett. 59
1987
Earlier work this paper cites.

Similar

N. Arkani-Hamed, S. Dimopoulos and G.R. Dvali, Phenomenology, astrophysics and cosmology of theories with submillimeter dimensions and TeV scale quantum gravity , Phys. Rev. D 59
1999
Cited alongside, same era.
L.J. Hall and D. Tucker-Smith, Cosmological constraints on theories with large extra dimensions , Phys. Rev. D 60
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2003
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.

Then

T.R. Slatyer, Energy Injection And Absorption In The Cosmic Dark Ages , Phys. Rev. D 87
Original
2013
Later among the works it cites.
A. Ibarra, D. Tran and C. Weniger, Indirect Searches for Decaying Dark Matter , Int. J. Mod. Phys. A 28
Original
2013
Later among the works it cites.
G. Dvali and C. Gomez, Black Hole’s Quantum N-Portrait , Fortsch. Phys. 61
Original
2013
Later among the works it cites.
T.R. Slatyer and C.-L. Wu, General Constraints on Dark Matter Decay from the Cosmic Microwave Background , Phys. Rev. D 95
Original
2017
Later among the works it cites.
S.K. Garg and C. Krishnan, Bounds on Slow Roll and the de Sitter Swampland , JHEP 11
Original

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2022

Dark Dimension Gravitons as Dark Matter

Gonzalo, Eduardo, Montero, Miguel, Obied, Georges et al.

Understand

We consider cosmological aspects of the Dark Dimension (a mesoscopic dimension of micron scale), which has recently been proposed as the unique corner of the quantum gravity landscape consistent with both the Swampland criteria and observations.

In particular we show how this leads, by the universal coupling of the Standard Model sector to bulk gravitons, to massive spin 2 KK excitations of the graviton in the dark dimension (the "dark gravitons") as an unavoidable dark matter candidate.
Assuming a lifetime for the current de Sitter phase of our universe of order Hubble, which follows from both the dS Swampland Conjecture and TCC, we show that generic features of the dark dimenson cosmology can naturally lead to the correct dark matter density and a resolution of the cosmological coincidence problem, where the matter/radiation equality temperature ($T\sim$ 1 eV) coincides with the temperature where the dark energy begins to dominate.
Thus one does not need to appeal to Weinberg's anthropic argument to explain this coincidence.

Built on

K.L. Pandey, T. Karwal and S. Das, Alleviating the H 0 H_{0} and σ 8 \sigma_{8} anomalies with a decaying dark matter model , JCAP 07
Original
1902
Earlier work this paper cites.
K. Vattis, S.M. Koushiappas and A. Loeb, Dark matter decaying in the late Universe can relieve the H0 tension , Phys. Rev. D 99
Original
1903
Earlier work this paper cites.
D. Lüst, E. Palti and C. Vafa, AdS and the Swampland , Phys. Lett. B 797
Original
1906
Earlier work this paper cites.
P. Agrawal, G. Obied and C. Vafa, H 0 H_{0} tension, swampland conjectures, and the epoch of fading dark matter , Phys. Rev. D 103
Original
1906
Earlier work this paper cites.
A. Ejlli, D. Ejlli, A.M. Cruise, G. Pisano and H. Grote, Upper limits on the amplitude of ultra-high-frequency gravitational waves from graviton to photon conversion , Eur. Phys. J. C 79
Original
1908
Earlier work this paper cites.
A. Bedroya and C. Vafa, Trans-Planckian Censorship and the Swampland , JHEP 09
Original
1909
Earlier work this paper cites.
S.-J. Lee, W. Lerche and T. Weigand, Emergent strings from infinite distance limits , JHEP 02
Original
1910
Earlier work this paper cites.
S. Weinberg, Anthropic Bound on the Cosmological Constant , Phys. Rev. Lett. 59
1987
Earlier work this paper cites.

Similar

N. Arkani-Hamed, S. Dimopoulos and G.R. Dvali, Phenomenology, astrophysics and cosmology of theories with submillimeter dimensions and TeV scale quantum gravity , Phys. Rev. D 59
1999
Cited alongside, same era.
L.J. Hall and D. Tucker-Smith, Cosmological constraints on theories with large extra dimensions , Phys. Rev. D 60
1999
Cited alongside, same era.
R.N. Mohapatra, S. Nussinov and A. Perez-Lorenzana, Large extra dimensions and decaying K K KK recurrences , Phys. Rev. D 68
2003
Cited alongside, same era.
S. Dodelson, Modern Cosmology , Academic Press, Amsterdam (2003)
2003
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.