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    • Dark charge versus electric charge
    Authors: Duong, Van Loi; Cao H. Nam; Ngo, Hai Tan; Phung, Van Dong;  Advisor: -;  Co-Author: - (2022)

    A new observation is that fundamental particles possess a dynamical dark charge, which governs both neutrino mass and dark matter, where the neutrino mass is determined via a canonical seesaw, while the dark matter stability is ensured by electric and color charge conservations
    • Multicomponent dark matter in noncommutative B − L gauge theory
    Authors: Cao, H. Nam; Duong, Van Loi; Le, Xuan Thuy; Phung, Van Dong;  Advisor: -;  Co-Author: - (2020)

    It is shown that for a higher weak isospin symmetry, SU(P)L with P≥3, the baryon minus lepton charge B−L neither commutes nor closes algebraically with SU(P)L similar to the electric charge Q, which all lead to a SU(3)C⊗SU(P)L⊗U(1)X⊗U(1)N gauge completion, where X and N determine Q and B−L, respectively. As a direct result, the neutrinos obtain appropriate masses via a canonical seesaw. While the version with P=3 supplies the schemes of single-component dark matter well established in the literature, we prove in this work that the models with P≥4 provide the novel scenarios of multicomponent dark matter, which contain simultaneously at least P−2 stable candidates, respectively. In this setup, the multicomponet dark matter is nontrivially unified with normal matter by gauge multiplet...