8,365 research outputs found
Comment on "PT Symmetry as a Generalization of Hermiticity" [arXiv:1002.2676]
We notice that the general PT-symmetric Hamiltonian matrix(N=2) having 6-real
parameters fails to reproduce one parameter PT-symmetric matrix.Comment: Title unchanged ,one ref [5] added . Abstract changed . All the
previous matrices have been changed consideing the ref[5
Neutrino mass generation in the SO(4) model
Generation of neutrino mass in SO(4) model is proposed here. The algebraic
structure of SO(4) is same as to that of . It is
shown that the spontaneous symmetry breaking results three massive as well as
three massless gauge bosons. The standard model theory according to which there
exist three massive gauge bosons and a massless one is emerged from this model.
In the framework of a small Dirac neutrino mass is
derived. It is also shown that such mass term may vanish with a special choice.
The Majorana mass term is not considered here and thus in this model the
neutrino mass does not follow seesaw structure.Comment: 7 pages, no figur
Minimal Pati-Salam Model from String Theory Unification
We provide what we believe is the minimal three family SUSY
and conformal Pati-Salam Model from type IIB superstring theory. This
orbifolded AdS model has long lived protons and has potential
phenomenological consequences for LHC.Comment: 8 page
Parity violation and the nature of charges
The origin of parity violation in physics is still unknown. At the present
time, it is introduced in the theory by requiring that the SU(2) subgroup
entering the description of interactions involves the left components. In the
present contribution, one elaborates upon a suggestion made by Landau that
particles and antiparticles could be like "stereo-isomeric" molecules, which
would naturally provides parity violation. Particles and antiparticles could
thus be combinations of the parity doublets associated with a chiral symmetry
realized in the Wigner-Weyl mode. Consequences of such a description and the
possible problems it could raise are examined.Comment: 3 pages, contribution to the 3rd international workshop: "From parity
violation to hadronic structure and more ..." (PAVI06), to appear in the
proceedings (EPJA
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