Invisible QCD as Dark Energy
Keyword(s):
We account for the late time acceleration of the Universe by extending the Quantum Chromodynamics (QCD) color to a S U ( 3 ) invisible sector (IQCD). If the Invisible Chiral symmetry is broken in the early universe, a condensate of dark pions (dpions) and dark gluons (dgluons) forms. The condensate naturally forms due to strong dynamics similar to the Nambu–Jona-Lasinio mechanism. As the Universe evolves from early times to present times the interaction energy between the dgluon and dpion condensate dominates with a negative pressure equation of state and causes late time acceleration. We conclude with a stability analysis of the coupled perturbations of the dark pions and dark gluons.
2010 ◽
Vol 25
(29)
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pp. 5253-5331
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2018 ◽
Vol 33
(36)
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pp. 1850215
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2007 ◽
Vol 16
(12a)
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pp. 2065-2074
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2019 ◽
Vol 34
(11)
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pp. 1950086
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2014 ◽
Vol 11
(02)
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pp. 1460006
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2014 ◽
Vol 92
(9)
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pp. 1062-1067
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2001 ◽
Vol 517
(1-2)
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pp. 177-183
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