1,138 research outputs found
Spectrum of supersymmetric and bosonic open 2-branes
We consider both the supersymmetric open 2-brane and bosonic open 2-brane,
their quantization and spectrum under the flat metric condition. The
supersymmetric spectrum turns out to be discrete, while the spectrum of purely
bosonic open 2-brane is shown to be devoid of any massless states.Comment: 8 pages, conferenc
Asymmetric wave transmission through one dimensional lattices with cubic-quintic nonlinearity
One dimensional lattice with an on-site cubic-quintic nonlinear response
described by a cubic-quintic discrete nonlinear Schr\"odinger equation is
tested for asymmetric wave propagation. The lattice is connected to linear side
chains. Asymmetry is introduced by breaking the mirror symmetry of the lattice
with respect to the center of the nonlinear region. Three cases corresponding
to dimer, trimer and quadrimer are discussed with focus on the corresponding
diode-like effect. Transmission coefficients are analytically calculated for
left and right moving waves via backward transfer map. The different
transmission coefficients for the left and right moving waves impinging the
lattice give rise to a diode-like effect which is tested for different
variations in asymmetry and site dependent coefficients. We show that there is
a higher transmission for incoming waves with lower wavenumbers as compared to
the waves with comparatively larger wavenumbers and a diode-like effect
improves by increasing the nonlinear layers. We also show that in the context
of transport through such lattices, the cooperation between cubic and quintic
nonlinear response is not "additive". Finally, we numerically analyse Gaussian
wave packet dynamics impinging on the CQDNLS lattice for all three cases.Comment: 10 pages, 17 figure
Two particle entanglement and its geometric duals
We show that for a system of two entangled particles, there is a dual
description to the particle equations in terms of classical theory of
conformally stretched spacetime. We also connect these entangled particle
equations with Finsler geometry. We show that this duality translates strongly
coupled quantum equations in the pilot-wave limit to weakly coupled geometric
equations.Comment: 10pp, Typos corrected, Accepted versio
Geometric Description of Schr\"{o}dinger Equation in Finsler and Funk Geometry
For a system of non-relativistic spinless bosons, we show by using a set
of suitable matching conditions that the quantum equations in the pilot-wave
limit can be translated into a geometric language for a Finslerian manifold. We
further link these equations to Euclidean timelike relative Funk geometry and
show that the two different metrics in both of these geometric frameworks lead
to the same coupling.Comment: 9 pages, to appear in IJGMM
Reply to the Letter by KS Tan and CT Tan: Ischaemic Stroke in Young Asian Women: Incomplete Investigations and Geographical Bias
Present and future of neurology in pakistan
Neurology started as a department in early nineteen sixties in Dow Medical College and King Edward Medical College and initially having a separate department of neurology was not mandated in medical colleges by Pakistan Medical and Dental Council¹. Some neurology training programs do not give exposure to subspecialties and training is focused on adult neurology². From 2015 to 2016, several conferences were held on neurology including an Annual Meeting in Quetta, movement disorder conference in Lahore
Plagiarism penalties
Research in all areas of sciences and humanities has led to the creation of a highly competitive environment which necessitates reporting of ideas, and discoveries at rapid pace. The emergence of new technologies of communication has significantly enhanced the capabilities of individuals to record and transcribe data at high speed. Even though, one can accumulate information in a fraction of time, but quite often the creative skills and ability to write one‘s own original thoughts do not match the required level of output. Writing ideas in one’s own words is not always easy and at times it becomes quite challenging particularly for those with limited command over the language. These situations often tempt a writer to look around easily available resources
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