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PRECESSION: Dynamics of spinning black-hole binaries with python
(American Physical SocietyPhysical Review D, 2016-06-27)
We present the numerical code precession, a new open-source python module to study the dynamics of precessing black-hole binaries in the post-Newtonian regime. The code provides a comprehensive toolbox to (i) study the ...
How far from equilibrium is active matter?
(American Physical SocietyPhysical Review Letters, 2016)
Active matter systems are driven out of thermal equilibrium by a lack of generalized Stokes-Einstein relation between injection and dissipation of energy at the microscopic scale. We consider such a system of interacting ...
Non-trivial Phase Coupling in Polariton Multiplets
(American Physical SocietyPhysical Review X, 2016)
We investigate the phase coupling between spatially separated polariton condensates under non-resonant optical pulsed excitation. In the simple case of two condensates, we observe phase locking either in symmetric or ...
Instabilities and Solitons in Minimal Strips
(American Physical SocietyPhysical Review Letters, 2016-07-01)
We show that highly twisted minimal strips can undergo a nonsingular transition, unlike the singular transitions seen in the Möbius strip and the catenoid. If the strip is nonorientable, this transition is topologically ...
Black Hole Kicks as New Gravitational Wave Observables
(American Physical SocietyPhysical Review Letters, 2016-06-29)
Generic black hole binaries radiate gravitational waves anisotropically, imparting a recoil, or kick, velocity to the merger remnant. If a component of the kick along the line of sight is present, gravitational waves emitted ...
Higher symmetries of the Schrödinger operator in Newton–Cartan geometry
(ElsevierJournal of Geometry and Physics, 2016-06-17)
We establish several relationships between the non-relativistic conformal symmetries of Newton–Cartan geometry and the Schrödinger equation. In particular we discuss the algebra sch(d) of vector fields conformally-preserving ...
Preconditioned ADMM with nonlinear operator constraint
(SpringerIFIP Advances in Information and Communication Technology, 2016)
We are presenting a modification of the well-known Alternating Direction Method of Multipliers (ADMM) algorithm with additional preconditioning that aims at solving convex optimisation problems with nonlinear operator ...
Micro-Tug-of-War: A Selective Control Mechanism for Magnetic Swimmers
(American Physical SocietyPhysical Review Applied, 2016-06-30)
One of the aspirations for artificial microswimmers is their application in noninvasive medicine. For any practical use, adequate mechanisms enabling control of multiple artificial swimmers will be of paramount importance. ...
Spectral study of the Laplace-Beltrami operator arising in the problem of acoustic wave scattering by a quarter-plane
(Oxford University PressQuarterly Journal of Mechanics and Applied Mathematics, 2016)
The Laplace-Beltrami operator on a sphere with a cut arises when considering
the problem of wave scattering by a quarter-plane. Recent methods developed
for sound-soft (Dirichlet) and sound-hard (Neumann) quarter-planes ...
Flagellar flows around bacterial swarms
(American Physical SocietyPhysical Review Fluids, 2016)
Flagellated bacteria on nutrient-rich substrates can differentiate into a swarming state and move in dense swarms across surfaces. A recent experiment measured the flow in the fluid around an Escherichia coli swarm (Wu, ...