Results 51 to 60 of about 429,343 (389)
Nuclear Physics B, 2004 We study the scenario of thermal leptogenesis in which the leptonic asymmetries are resonantly enhanced through the mixing of nearly degenerate heavy Majorana neutrinos that have mass differences comparable to their decay widths. Field-theoretic issues arising from the proper subtraction of real intermediate states from the lepton-number-violating ...
Pilaftsis, Apostolos +1 more
openaire +2 more sources
Topologically robust sound propagation in an angular-momentum-biased graphene-like resonator lattice
Nature Communications, 2015 Topological insulators do not allow conduction in the bulk, yet they support edge modes that travel along the boundary only in one direction, determined by the carried electron spin, with inherent robustness to defects and disorder.
A. Khanikaev +3 more
semanticscholar +1 more source
Classical and Quantum Gravity, 2005 We investigate in detail gravitational waves in an Schwarzschild-anti-de Sitter bulk spacetime surrounded by an Einstein static brane with generic matter content. Such a model provides a useful analogy to braneworld cosmology at various stages of its evolution, and generalizes our previous work [gr-qc/0504023] on pure tension Einstein-static branes. We
Sanjeev S. Seahra, Chris Clarkson
openaire +2 more sources
Coupling ideality of integrated planar high-Q microresonators [PDF]
, 2016 Chipscale microresonators with integrated planar optical waveguides are useful building blocks for linear, nonlinear and quantum optical devices. Loss reduction through improving fabrication processes has resulted in several integrated micro resonator ...
Geiselmann, Michael +3 more
core +2 more sources
Study and analysis of an electric Z-shaped meta-atom
Advanced Electromagnetics, 2012 A printed Z-shaped electric meta-atom is presented as an alternative design to the conventional electric-LC (ELC) resonator. We propose to redesign the ELC resonator pattern to get a compact and a low cost electric resonator exhibiting a strong electric ...
A. Dhouibi +3 more
doaj +1 more source
Optimisation Design of Coupling Region Based on SOI Micro-Ring Resonator
Micromachines, 2014 Design optimization of the coupling region is conducted in order to solve the difficulty of achieving a higher quality factor (Q) for large size resonators based on silicon-on-insulator (SOI).
Shubin Yan +5 more
doaj +1 more source
Europhysics Letters (EPL), 2006 Electrons coupled to local lattice deformations end up in selftrapped localized molecular states involving their binding into bipolarons when the coupling is stronger than a certain critical value. Below that value they exist as essentially itinerant electrons.
J. RANNINGER, ROMANO, Alfonso
openaire +4 more sources
, 2005 We analyse the quantum dynamics of a nanomechanical resonator coupled to a normal-state single-electron transistor (SET). Starting from a microscopic description of the system, we derive a master equation for the SET island charge and resonator which is ...
A D Armour +10 more
core +1 more source
Two - mirror resonator as a high resolution length –sensing interferometer [PDF]
Kirkuk Journal of Science, 2011 Same basic properties of resonators from a wave – optical and from a ray resonator were investigated. These properties play a pivoted role in determining both the spectral properties of optical resonators and the behavior of rays inside such resonators ...
Suran D. Yaseen
doaj +1 more source
Noise properties of two single electron transistors coupled by a nanomechanical resonator
, 2005 We analyze the noise properties of two single electron transistors (SETs) coupled via a shared voltage gate consisting of a nanomechanical resonator. Working in the regime where the resonator can be treated as a classical system, we find that the SETs ...
A. D. Armour +6 more
core +1 more source