75,718 research outputs found
The Lepton-Number-Violating Decays of and Mesons Induced by the Doubly Charged Higgs Boson
The lepton-number-violating decays of and mesons induced
by the doubly charged Higgs boson have been studied. It is found that although
the yielded results of the branch ratio are much smaller than the present
limits from the data they are consistent with the previous conclusions
calculated in the framwork of relativistic quark model where the processes
happened via the light Majorana neutrinos.Comment: version to appear in PR
Generic Wavefunction Description of Fractional Quantum Anomalous Hall States and Fractional Topological Insulators
We propose a systematical approach to construct generic fractional quantum
anomalous Hall (FQAH) states, which are generalizations of the fractional
quantum Hall states to lattice models with zero net magnetic field and full
lattice translation symmetry. Local and translationally invariant Hamiltonians
can also be constructed, for which the proposed states are unique ground
states. Our result demonstrates that generic chiral topologically ordered
states can be realized in lattice models, without requiring magnetic
translation symmetry and Landau level structure. We further generalize our
approach to the time-reversal invariant analog of fractional quantum Hall
states--fractional topological insulators, and provide the first explicit
wavefunction description of fractional topological insulators in the absence of
spin conservation.Comment: 4.5 pages, 2 figure
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