Phases of matter are characterized by order parameters describing the type and degree of order in a system. Here we experimentally explore the magnetic phases present in a near-zero temperature spin-1 spin-orbit-coupled atomic Bose gas and the quantum phase transitions between these phases. We observe ferromagnetic and unpolarized phases, which are stabilized by spin-orbit coupling's explicit l...

In the small mass ratio expansion and on equatorial plane, two-body problem for point particles in general relativity admits a quasi-circular inspiral motion followed by transition-to-plunge motion. We first derive equations governing Kerr background at adiabatic, post-adiabatic post-post-adiabatic orders slow-timescale terms of self-force we highlight structure higher subleading orders. parall...

As shown recently, it is possible to create, on a vibrating fluid interface, mobile emitters of Faraday waves [Y. Couder, S. Protière, E. Fort, and A. Boudaoud, Nature 437, 208 (2005)]. They are formed of droplets bouncing at a subharmonic frequency which couple to the surface waves they emit. The droplet and its wave form a spontaneously propagative structure called a "walker." In the present ...

From an analysis of the sky and velocity distributions of the high-velocity clouds (HVCs) we show that the majority of the HVCs has a common origin. We conclude that the HVCs surround the Galaxy, forming a metacloud of ∼ 300 kpc in size and with a mass of ∼ 3×109 M⊙, and that they are the product of a powerful “superwind” (about 10 58 ergs), which occurred in the Magellanic Clouds about 570 Myr...

The microscopic diffusional dynamics of Na adatoms on a Cu~001! surface is modeled by the classical deterministic motion of a particle from a two-dimensional periodic potential previously fitted to the experiment. Depending on the energy of the particle, a series of chaotic transitions take place determining transport properties of the system. Two different regimes of diffusion, anomalous and n...

Time evolution of wave packets built from the eigenstates of the Dirac equation for a hydrogenic system is considered. We investigate the space and spin motion of wave packets which, in the non-relativistic limit, are stationary states with a probability density distributed uniformly along the classical, elliptical orbit (elliptic WP). We show that the precession of such a WP, due to relativist...

1 Length spectra of periodic orbits are investigated for some chaotic dynamical systems whose quantum energy spectra show unexpected statistical properties and for which the notion of arithmetical chaos has been introduced recently. These systems are defined as the uncon-strained motions of particles on two dimensional surfaces of constant negative curvature whose fundamental groups are given b...

We demonstrate that the chaotic orbits of Prometheus and Pandora are due to interactions associated with the 121:118 mean motion resonance. Differential precession splits this resonance into a quartet of components equally spaced in frequency. Libration widths of the individual components exceed the splitting resulting in resonance overlap which causes the chaos. A single degree of freedom mode...