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Now showing items 1121-1130 of 1850
Autophoretic flow on a torus
(American Physical SocietyPhysical Review Fluids, 2017-03-02)
Phoretic swimmers provide new avenues to study nonequilibrium statistical physics and are also hailed as a promising technology for bioengineering at the cellular scale. Exact solutions for the locomotion of such swimmers ...
Towards radiative transitions in charmonium
(Proceedings of Science, 2016-01-01)
We present preliminary calculations towards radiative transitions in charmonium using anisotropic $\textit{Nf}$=2+1 dynamical ensembles generated by the Hadron Spectrum Collaboration. With the use of newer technologies we ...
Dynamical α-cluster model of $^{16}$O
(American Physical SocietyPhysical Review C, 2017-03-09)
We calculate the low-lying spectrum of the $^{16}$O nucleus using an α-cluster model which includes the important tetrahedral and square configurations. Our approach is motivated by the dynamics of α-particle scattering ...
Localization and broadband follow-up of the gravitational-wave transient GW150914
(IOP PublishingAstrophysical Journal Letters, 2016-07-20)
A gravitational-wave (GW) transient was identified in data recorded by the Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) detectors on 2015 September 14. The event, initially designated G184098 and ...
Bounds on the Number of Measurements for Reliable Compressive Classification
(IEEEIEEE Transactions on Signal Processing, 2016-11-15)
This paper studies the classification of high-dimensional Gaussian signals from low-dimensional noisy, linear measurements. In particular, it provides upper bounds (sufficient conditions) on the number of measurements ...
MRI turbulence and thermal instability in accretion discs
(Oxford University PressMonthly Notices of the Royal Astronomical Society, 2017-06)
A long-standing puzzle in the study of black hole accretion concerns the presence or not of thermal instability. Classical theory predicts that the encircling accretion disc is unstable, as do some self-consistent ...
Active matter logic for autonomous microfluidics
(Nature Publishing GroupNature Communications, 2017-04-25)
Chemically or optically powered active matter plays an increasingly important role in materials design, but its computational potential has yet to be explored systematically. The competition between energy consumption and ...
Mixing efficiency in run-down gravity currents
(Cambridge University PressJournal of Fluid Mechanics, 2016-12-25)
This paper presents measurements of mixing efficiency of the two counter-flowing gravity currents created by symmetric lock exchange in a channel. The novel feature of this work is that the buoyancy Reynolds number of the ...
Anti-de Sitter Particles and Manifest (Super)Isometries.
(American Physical SocietyPhysical Review Letters, 2017-04-07)
Starting from the classical action for a spin-zero particle in a D-dimensional anti-de Sitter (AdS) spacetime, we recover the Breitenlohner-Freedman bound by quantization. For D=4, 5, 7 and using an Sl(2;K) spinor notation ...
Maximum magnetic moment to angular momentum conjecture
(American Physical SocietyPhysical Review D, 2017-03-24)
Conjectures play a central role in theoretical physics, especially those that assert an upper bound to some dimensionless ratio of physical quantities. In this paper we introduce a new such conjecture bounding the ratio ...