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Here the ionization and high harmonic generation in Hydrogen and Helium by using quantum (hydrodynamic) trajectories is analyzed theoretically. The quantum trajectories allow a self-contained treatment of the electron exchange and…

原子物理 · 物理学 2025-02-07 Ivan P. Christov

A high energy density plasma embedded in a neutral gas is able to launch an outward-propagating nonlinear electrostatic ionization wave that traps energetic electrons. The trapping maintains a strong sheath electric field, enabling rapid…

等离子体物理 · 物理学 2021-02-24 Haotian Mao , Kathleen Weichman , Zheng Gong , Todd Ditmire , Hernan Quevedo , Alexey Arefiev

In this paper, a quasistatic model is extended to describe the double ionization of Helium in intense linearly polarized field, yielding achieve an insight to the two-electron correlation effect in the ionization dynamics. Our numerical…

原子物理 · 物理学 2007-05-23 Li-Bin Fu , Jie Liu , Jing Chen , Shi-Gang Chen

We analytically investigate the diffusive motion inferred from experimental observations of active particles driven by quantum vortices on the surface of superfluid helium. We first study the dynamical behavior of an active particle subject…

统计力学 · 物理学 2026-04-21 Yun Jeong Kang , Sung Kyu Seo , Kyungsik Kim

Classical electromagnetism is linear. However, fields can polarize the vacuum Dirac sea, causing quantum nonlinear electromagnetic phenomena, e.g., scattering and splitting of photons, that occur only in very strong fields found in neutron…

其他凝聚态物理 · 物理学 2022-02-15 Aydin C. Keser , Yuli Lyanda-Geller , Oleg P. Sushkov

We investigate the nonlinear interaction between a relativistically strong laser beam and a plasma in the quantum regime. The collective behavior of the electrons is modeled by a Klein-Gordon equation, which is nonlinearly coupled with the…

等离子体物理 · 物理学 2011-07-26 Bengt Eliasson , Padma K. Shukla

When an ensemble of particles interact hydrodynamically, they generically display large-scale transient structures such as swirls in sedimenting particles [1], or colloidal strings in sheared suspensions [2]. Understanding these…

软凝聚态物质 · 物理学 2013-01-24 Nicolas Desreumaux , Jean-Baptiste Caussin , Raphael Jeanneret , Eric Lauga , Denis Bartolo

We study collisions between two strongly interacting atomic Fermi gas clouds. We observe exotic nonlinear hydrodynamic behavior, distinguished by the formation of a very sharp and stable density peak as the clouds collide and subsequent…

量子气体 · 物理学 2012-01-18 James Joseph , John E. Thomas , Manas Kulkarni , Alexander G. Abanov

This work continues our studies of nonlinear evolution of a system of wavepackets. We study a wave propagation governed by a nonlinear system of hyperbolic PDE's with constant coefficients with the initial data being a multi-wavepacket. By…

偏微分方程分析 · 数学 2007-08-13 A. Babin , A. Figotin

We provide a statistical and correlational analysis of the spatial and energetic properties of equilibrium configurations of a few-body system of two to eight equally charged classical particles that are confined on a one-dimensional…

原子物理 · 物理学 2025-12-02 J. M. Dörre , F. K. Diakonos , P. Schmelcher

In this work we derive evolution equations for the nonlinear behavior of a coasting beam under the influence of a resonator impedance. Using a renormalization group approach we find a set of coupled nonlinear equations for the beam density…

加速器物理 · 物理学 2007-05-23 S. I. Tzenov , P. L. Colestock

The quantized lateral motional states and the spin states of electrons trapped on the surface of superfluid helium have been proposed as basic building blocks of a scalable quantum computer. Circuit quantum electrodynamics (cQED) allows…

介观与纳米尺度物理 · 物理学 2016-03-30 Ge Yang , A. Fragner , G. Koolstra , L. Ocola , D. A. Czaplewski , R. J. Schoelkopf , D. I. Schuster

The generation and evolution of entanglement in quantum many-body systems is an active area of research that spans multiple fields, from quantum information science to the simulation of quantum many-body systems encountered in condensed…

Resonances with electromagnetic whistler-mode waves are the primary driver for the formation and dynamics of energetic electron fluxes in various space plasma systems, including shock waves and planetary radiation belts. The basic and most…

空间物理 · 物理学 2021-11-24 A. V. Artemyev , A. I. Neishtadt , A. A. Vasiliev , D. Mourenas

In this paper, we have investigated the correlated electron emission of the nonsequence double ionization (NSDI) in an intense linearly polarized field. The theoretical model we employed is the semiclassical rescattering model, the model…

原子物理 · 物理学 2007-05-23 Li-Bin Fu , Jie Liu , Shi-Gang Chen

We examine correlated electron and doubly charged ion momentum spectra from strong field double ionization of Neon employing intense elliptically polarized laser pulses. An ellipticity-dependent asymmetry of correlated electron and ion…

We analyze mechanisms and regimes of wave packet spreading in nonlinear disordered media. We predict that wave packets can spread in two regimes of strong and weak chaos. We discuss resonance probabilities, nonlinear diffusion equations,…

无序系统与神经网络 · 物理学 2015-05-18 S. Flach

This work is devoted to analysis of the nonlinear dynamics of interrelated thermal and electromagnetic perturbations in a superconductor caused by dissipative effects involved in the viscous motion of the magnetic flux. The structure and…

超导电性 · 物理学 2009-11-07 Nizam A. Taylanov

Quantized systems whose underlying classical dynamics possess an elaborate mixture of regular and chaotic motion can exhibit rather subtle long-time quantum transport phenomena. In a short wavelength regime where semiclassical theories are…

混沌动力学 · 物理学 2013-05-29 Christoph-Marian Goletz , Frank Grossmann , Steven Tomsovic

In this paper we apply quantum hydrodynamics (QHD) to study the quantum evolution of a system of spinning particles and particles that have the electric dipole moments EDM in the rotating reference frame. The method presented is based on…

等离子体物理 · 物理学 2016-12-21 Mariya Iv. Trukhanova