243,263 research outputs found
Utility of a Special Second Scalar Doublet
This Brief Review deals with the recent resurgence of interest in adding a
second scalar doublet (eta^+,eta^0) to the Standard Model of particle
interactions. In most studies, it is taken for granted that eta^0 should have a
nonzero vacuum expectation value, even if it may be very small. What if there
is an exactly conserved symmetry which ensures =0? The phenomenological
ramifications of this idea include dark matter, radiative neutrino mass,
leptogenesis, and grand unification.Comment: 9 pages, 1 figur
Supersymmetric U(1) Gauge Realization of the Dark Scalar Doublet Model of Radiative Neutrino Mass
Adding a second scalar doublet (eta^+,eta^0) and three neutral singlet
fermions N_{1,2,3} to the Standard Model of particle interactions with a new
Z_2 symmetry, it has been shown that Re(eta^0) or Im(eta^0) is a good
dark-matter candidate and seesaw neutrino masses are generated radiatively. A
supersymmetric U(1) gauge extension of this new idea is proposed, which
enforces the usual R parity of the Minimal Supersymmetric Standard Model, and
allows this new Z_2 symmetry to emerge as a discrete remnant.Comment: 8 pages, 3 figure
A Remark on Soliton Equation of Mean Curvature Flow
In this short note, we consider self-similar immersions of the Graphic Mean Curvature Flow of higher co-dimension. We
show that the following is true: Let be
a graph solution to the soliton equation
Assume . Then there exists a
unique smooth function such that
and for any real number , where Comment: 6 page
Osgood-Hartogs type properties of power series and smooth functions
We study the convergence of a formal power series of two variables if its
restrictions on curves belonging to a certain family are convergent. Also
analyticity of a given function is proved when the restriction
of on analytic curves belonging to some family is analytic. Our results
generalize two known statements: a theorem of P. Lelong and the Bochnak-Siciak
Theorem. The questions we study fall into the category of "Osgood-Hartogs-type"
problems.Comment: 13 page
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