Results 21 to 30 of about 92,121 (267)
A model of dark energy and dark matter [PDF]
Nuclear Physics B, 2006 A dynamical model for the dark energy is presented in which the ``quintessence'' field is the axion, $a_Z$, of a spontaneously broken global $U(1)_{A}^{(Z)}$ symmetry whose potential is induced by the instantons of a new gauge group $SU(2)_Z$. The $SU(2)_Z$ coupling becomes large at a scale $Λ_Z \sim 10^{-3} eV$ starting from an initial value $M$ at ...
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Signals of dark matter in a supersymmetric two dark matter model [PDF]
Journal of Cosmology and Astroparticle Physics, 2011 Supersymmetric radiative neutrino mass models have often two dark matter candidates. One is the usual lightest neutralino with odd R parity and the other is a new neutral particle whose stability is guaranteed by a discrete symmetry that forbids tree-level neutrino Yukawa couplings.
Fukuoka, Hiroki +2 more
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Inflation and mixed dark matter models [PDF]
Monthly Notices of the Royal Astronomical Society, 1993 10 pages, plus figure available from ARL SUSSEX-AST 93/4-2 LANCS-TH 93 ...
Liddle, Andrew R, Lyth, David H
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Physics of Atomic Nuclei, 2002 13 pages, latex, 10 figures, invited talk at NANP-01, Dubna, Russia, June 19--23 ...
Arnowitt, R., Dutta, B., Santoso, Y.
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REIONIZATION IN THE WARM DARK MATTER MODEL [PDF]
The Astrophysical Journal, 2012 Compared with the cold dark matter (CDM) model, in the warm dark matter (WDM) model formation of small scale structure is suppressed. It is often thought that this would delay the reionization of the intergalactic medium (IGM), as the star formation rate during the epoch of reionization (EOR) would be lowered. However, during the later stage of the EOR,
Yue, Bin, Chen, Xuelei
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IceCube at the frontier of macroscopic dark matter direct detection
Journal of High Energy Physics, 2022 For a class of macroscopic dark matter models, inelastic scattering of dark matter off a nucleus can generate electromagnetic signatures with GeV-scale energy.
Yang Bai, Joshua Berger, Mrunal Korwar
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Dark magnetic dipole property in fermionic absorption by nucleus and electrons
Journal of High Energy Physics, 2022 The fermionic dark matter (DM) absorption by nucleus or electron targets provides a distinctive signal to search for sub-GeV DM. We consider a Dirac fermion DM charged under a dark gauge group and with the dark magnetic dipole operator.
Tong Li, Jiajun Liao, Rui-Jia Zhang
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Sub-GeV dark matter model [PDF]
Physical Review D, 2019 We propose an extension of the Standard Model gauge symmetry by the gauge group $U(1)_{T3R}$ in order to address the Yukawa coupling hierarchy between the third generation fermions and the first two generation fermions of the SM. We assume that only the right-handed fermions of the first two generations are charged under the $U(1)_{T3R}$.
Bhaskar Dutta, Sumit Ghosh, Jason Kumar
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Multi-component dark sectors: symmetries, asymmetries and conversions
Journal of High Energy Physics, 2022 We study the relic abundance of several stable particles from a generic dark sector, including the possible presence of dark asymmetries. After discussing the different possibilities for stabilising multi-component dark matter, we analyse the final relic
Arnau Bas i Beneito +2 more
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Holographic technicolor model and dark matter *
Chinese Physics C, 2020 Abstract We investigate the strongly coupled minimal walking technicolor model (MWT) in the framework of a bottom-up holographic model, where the global SU(4) symmetry breaks into subgroups.
Chen, Yidian, Bi, Xiao-Jun, Huang, Mei
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