6,282 research outputs found
Test of CPT symmetry in cascade decays
Cascade mixing provides an elegant place to study the mixing.
We use this idea to study the CPT violation caused by mixing.
An approximation method is adopted to treat the two complex
mixing parameters and . A procedure to extract the parameters
and is suggested. The feasibility of exploring the CPT
violation and determining of and in the future B-factories and
LHC-B is discussed.Comment: Latex, 17 pages, some errors modifie
The second order nonlinear conductance of a two-dimensional mesoscopic conductor
We have investigated the weakly non-linear quantum transport properties of a
two-dimensional quantum conductor. We have developed a numerical scheme which
is very general for this purpose. The nonlinear conductance is computed by
explicitly evaluating the various partial density of states, the sensitivity
and the characteristic potential. Interesting spatial structure of these
quantities are revealed. We present detailed results concerning the crossover
behavior of the second order nonlinear conductance when the conductor changes
from geometrically symmetrical to asymmetrical. Other issues of interests such
as the gauge invariance are also discussed.Comment: LaTe
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