180 citations · 1.1k across the 27 of their papers we have counts for
29 papers
Active matter within flexible boundaries: a novel experimental approach with T. aceti nematodes
Christina M. Ceballos, Matthew S. Mizuhara, Mykhailo Potomkin +1
We experimentally explore the collective behavior of the nematode T. Aceti inside flexible boundaries showing the emergence of previously unreported states. These nematodes have be…
Probing the isolated vector magnetic field of structured laser beams by atoms
R. P. Schmidt, S. Martin-Domene, A. A. Peshkov +2
Electric and magnetic fields are inherently coupled in an electromagnetic wave. However, structured light beams enable their spatial separation. In particular, azimuthally polarize…
Interaction of vector light beams with atoms exposed to a time-dependent magnetic field
Shreyas Ramakrishna, Riaan P. Schmidt, Anton A. Peshkov +3
During recent years interest has been rising for applications of vector light beams towards magnetic field sensing. In particular, a series of experiments were performed to extract…
Atomic photoexcitation as a tool for probing purity of twisted light modes
R. P. Schmidt, S. Ramakrishna, A. A. Peshkov +4
The twisted light modes used in modern atomic physics experiments can be contaminated by small admixtures of plane wave radiation. Although these admixtures hardly reveal themselve…
Excitation of forbidden electronic transitions in atoms by Hermite-Gaussian modes
Anton A. Peshkov, Elena Jordan, Markus Kromrey +3
Photoexcitation of trapped ions by Hermite-Gaussian (HG) modes from guided beam structures is proposed and investigated theoretically. In particular, simple analytical expressions…
Fluid circulation driven by collectively organized metachronal waves in swimming T. aceiti nematodes
A. C. Quillen, A. Peshkov, Brato Chakrabarti +3
Recent experiments have shown that the nematode {\it T. aceti} can assemble into collectively undulating groups at the edge of fluid drops. This coordinated state consists of metac…
Comparison of compression vs shearing near jamming, for a simple model of athermal frictionless disks in suspension
Anton Peshkov, S. Teitel
Using a simplified model for a non-Brownian suspension, we numerically study the response of athermal, overdamped, frictionless disks in two dimensions to isotropic and uniaxial co…
Universality of stress-anisotropic and stress-isotropic jamming of frictionless spheres in three dimensions: Uniaxial vs isotropic compression
Anton Peshkov, S. Teitel
We numerically study a three dimensional system of athermal, overdamped, frictionless spheres, using a simplified model for a non-Brownian suspension. We compute the bulk viscosity…
Radiative recombination of twisted electrons with hydrogen-like heavy ions: Linear polarization of emitted photons
Anna V. Maiorova, Anton A. Peshkov, Andrey Surzhykov
We present a theoretical investigation of the radiative recombination of twisted Bessel electrons with initially hydrogen-like (finally helium-like) heavy ions. In our study, we fo…
Experimentally measuring rolling and sliding in three-dimensional dense granular packings
Zackery A. Benson, Anton Peshkov, Nicole Yunger Halpern +2
We experimentally measure a three-dimensional (3D) granular system's reversibility under cyclic compression. We image the grains using a refractive-index-matched fluid, then analyz…
Raman scattering of plane-wave and twisted light off chiral molecular liquids
Florian Büscher, Silvia Müllner, Dirk Wulferding +5
We present an experimental study of the quasi-elastic Raman scattering (QES) of plane-wave and twisted light by liquid crystals. Depending on their temperature, these crystals can…
Synchronized oscillations in swarms of nematode Turbatrix aceti
Anton Peshkov, Sonia McGaffigan, Alice C. Quillen
There is a recent surge of interest in the behavior of active particles that can at the same time align their direction of movement and synchronize their oscillations, known as swa…
Metachronal waves in concentrations of swimming Turbatrix aceti nematodes and an oscillator chain model for their coordinated motions
A. C. Quillen, A. Peshkov, Esteban Wright +1
At high concentration, free swimming nematodes known as vinegar eels ({\it Turbatrix aceti}), collectively exhibit metachronal waves near a boundary. We find that the frequency of…
Effects of interparticle friction on the response of 3D cyclically compressed granular material
Zackery Benson, Anton Peshkov, Derek C. Richardson +1
We numerically study the effect of inter-particle friction coefficient on the response to cyclical pure shear of spherical particles in three dimensions. We focus on the rotations…
Critical Scaling of Compression-Driven Jamming of Athermal Frictionless Spheres in Suspension
Anton Peshkov, S. Teitel
We study numerically a system of athermal, overdamped, frictionless spheres, as in a non-Brownian suspension, in two and three dimensions. Compressing the system isotropically at a…
Memory in 3D cyclically driven granular material
Zackery A. Benson, Anton Peshkov, Derek C. Richardson +1
We perform experimental and numerical studies of a granular system under cyclic-compression to investigate reversibility and memory effects. We focus on the quasi-static forcing of…
Boids in a Loop: Self-Propelled particles within a Flexible Boundary
A. C. Quillen, J. P. Smucker, A. Peshkov
We numerically explore the behavior of repelling and aligning self-propelled polar particles (boids) in 2D enclosed by a damped flexible and elastic loop-shaped boundary. We observ…
Generalized excitation of atomic multipole transitions by twisted light modes
S. A. -L. Schulz, A. A. Peshkov, R. A. Müller +5
A theoretical study is performed for the excitation of a single atom localized in the center of twisted light modes. Here we present the explicit dependence of excitation rates on…
Reversibility of granular rotations and translations
Anton Peshkov, Michelle Girvan, Derek C. Richardson +1
We analyze reversibility of both displacements and rotations of spherical grains in three-dimensional compression experiments. Using transparent acrylic beads with cylindrical hole…
Rayleigh scattering of twisted light by hydrogenlike ions
A. A. Peshkov, A. V. Volotka, A. Surzhykov +1
The elastic Rayleigh scattering of twisted light and, in particular, the polarization (transfer) of the scattered photons have been analyzed within the framework of second-order pe…
Active dry granular flows: rheology and rigidity transitions
Anton Peshkov, Philippe Claudin, Eric Clement +1
The constitutive relations of a dense granular flow composed of self-propelling frictional hard particles are investigated by means of DEM numerical simulations. We show that the r…
Comment on Ihle, "Towards a quantitative kinetic theory of polar active matter"
Eric Bertin, Hugues Chaté, Francesco Ginelli +3
A comment on the preprint "Towards a quantitative kinetic theory of polar active matter" by T. Ihle, arXiv:1401.8056.
Boltzmann-Ginzburg-Landau approach for continuous descriptions of generic Vicsek-like models
Anton Peshkov, Eric Bertin, Francesco Ginelli +1
We describe a generic theoretical framework, denoted as the Boltzmann-Ginzburg-Landau approach, to derive continuous equations for the polar and/or nematic order parameters describ…
Transport powered by bacterial turbulence
Andreas Kaiser, Anton Peshkov, Andrey Sokolov +3
We demonstrate that collective turbulent-like motion in a bacterial bath can power and steer directed transport of mesoscopic carriers through the suspension. In our experiments an…