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On unitarity relations and their application to meson—antimeson mixing
Springer Science and Business Media LLC - - 2003
Role of guard rings in improving the performance of silicon detectors
Springer Science and Business Media LLC - Tập 65 - Trang 259-272 - 2005
BARC has developed large-area silicon detectors in collaboration with BEL to be
used in the pre-shower detector of the CMS experiment at CERN. The use of
floating guard rings (FGR) in improving breakdown voltage and reducing leakage
current of silicon detectors is well-known. In the present work, it has been
demonstrated that FGRs can also be used to improve the spectroscopic response of
silicon d...
Application of Tietz potential to study optical properties of spherical quantum dots
Springer Science and Business Media LLC - Tập 85 - Trang 723-737 - 2015
In this work, we study the optical properties of spherical quantum dots by using
Tietz potential. In this regard, we have applied Nikiforov–Uvarov (NU) technique
and numerically solved the Schrödinger equation to obtain energy levels and wave
functions. Then, by using the density matrix method, we have derived expressions
for the changes in linear and third-order nonlinear absorption coefficients ...
Nonequilibrium noise and instabilities in membranes with active pumps
Springer Science and Business Media LLC - Tập 53 - Trang 237-242 - 1999
We study the statistical properties and dynamics of flexible fluid membranes
containing active transmembrane proteins and find that such active membranes can
be either stable or unstable to small disturbances, depending on the signs of
certain crucial parameters characterising the protein-membrane interaction. A
major finding is that the shape-fluctuation spectrum in the stable case for a
zero-ten...
Single W production in e − γ collisions through the decay lepton spectrum to probe γ WW couplings
Springer Science and Business Media LLC - - 2012
The effect of an anomalous γWW coupling in the e − γ → $\nu_{e} W^{-}$ process
through the angular and energy spectrum of the secondary leptons is
investigated. Within the narrow-width-approximation (NWA), a semianalytical
study of the secondary lepton energy angle double distribution is considered.
Different observables constructed using this distribution are expected to be
very effective to pr...
Hypersurface-homogeneous Universe filled with perfect fluid in f(R, T) theory of gravity
Springer Science and Business Media LLC - Tập 87 - Trang 1-6 - 2016
The exact solutions of the field equations with respect to
hypersurface-homogeneous Universe filled with perfect fluid in the framework of
f(R, T) theory of gravity (Harko et al, Phys. Rev. D 84, 024020 (2011)) is
derived. The physical behaviour of the cosmological model is studied.
Ultra-low-frequency dust-electromagnetic modes in self-gravitating magnetized dusty plasmas
Springer Science and Business Media LLC - - 2001
What have we learnt from Wilkinson microwave anisotropy probe?
Springer Science and Business Media LLC - Tập 63 - Trang 829-836 - 2004
It has been a little over a year since WMAP produced its dramatic new glimpse of
the cosmic microwave background. I review the results of the WMAP mission and
the science that has arisen from it, focusing on the qualitatively new features
of the data: the temperature-polarization correlation, correlations with large
scale structure, the large-scale power deficit and its implications, and the
searc...
Problems with tunneling of thin shells from black holes
Springer Science and Business Media LLC - Tập 70 - Trang 3-26 - 2008
It is shown that exp(−2 Im(∫ p dr)) is not invariant under canonical
transformations in general. Specifically for shells tunneling out of black
holes, this quantity is not invariant under canonical transformations. It can be
interpreted as the transmission coefficient only in the cases in which it is
invariant under canonical transformations. Although such cases include alpha
decay, they do not in...
Growth of zinc oxide nanostructures
Springer Science and Business Media LLC - Tập 65 - Trang 809-814 - 2005
Zinc oxide (ZnO) nanowhiskers have been prepared using a multilayer ZnO(50
nm)/Zn(20 nm)/ZnO(2μm) structure on a polished stainless steel (SS) substrate by
high rate magnetron sputtering. The formation of uniformly distributed ZnO
nanowhiskers with about 20 nm dia. and 2 to 5 μm length was observed after a
postdeposition annealing of the prepared structure at 300–400° C. An array of
highlyc-axis o...
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