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This is the user manual for the hybrid code XTANT-3, simulating intense femtosecond X-ray irradiation of matter. The code combines a few models into one with feedbacks: transport Monte Carlo simulation, Boltzmann collision integrals, and…

其他凝聚态物理 · 物理学 2023-09-29 Nikita Medvedev

We propose that the non-linear radio-frequency dynamics and nanoscale size of topological magnetic structures associated to their well-defined internal modes advocate for their use as in-materio scalable frequency multipliers for spintronic…

介观与纳米尺度物理 · 物理学 2021-07-14 Davi R. Rodrigues , Jonas Nothhelfer , Morteza Mohseni , Ross Knapman , Philipp Pirro , Karin Everschor-Sitte

Deterministic preparation of an ultracold harmonically trapped one-dimensional Fermi gas consisting of a few fermions has been realized by the Heidelberg group. Using Floquet formalism, we study the time dynamics of two- and three-fermion…

量子气体 · 物理学 2016-10-24 X. Y. Yin , Yangqian Yan , D. Hudson Smith

Available energy (\AE{}), which quantifies the maximum amount of thermal energy that may be liberated and converted into instabilities and turbulence, has shown to be a useful metric for predicting saturated energy fluxes in…

等离子体物理 · 物理学 2023-10-25 R. J. J. Mackenbach , J. H. E. Proll , G. Snoep , P. Helander

We present a computational protocol, based on density matrix perturbation theory, to obtain non-adiabatic, frequency-dependent electron-phonon self-energies for molecules and solids. Our approach enables the evaluation of electron-phonon…

材料科学 · 物理学 2023-05-09 Han Yang , Marco Govoni , Arpan Kundu , Giulia Galli

The geometrical shapes and the physical properties of stellar wind -- interstellar medium interaction regions form an important stage for studying stellar winds and their embedded magnetic fields as well as cosmic ray modulation. Our goal…

太阳与恒星天体物理 · 物理学 2015-01-22 Dieter H. Nickeler , Thomas Wiegelmann , Marian Karlicky , Michaela Kraus

A surface-hopping algorithm recently derived from the exact factorization approach, SHXF, [Ha, Lee, Min, J. Phys. Chem. Lett. 9, 1097 (2018)] introduces an additional term in the electronic equation of surface-hopping, which couples…

化学物理 · 物理学 2022-02-08 Patricia Vindel-Zandbergen , Spiridoula Matsika , Neepa T. Maitra

We present Phantom, a fast, parallel, modular and low-memory smoothed particle hydrodynamics and magnetohydrodynamics code developed over the last decade for astrophysical applications in three dimensions. The code has been developed with a…

We study the trajectories of a single colloidal particle as it hops between two energy wells A and B, which are sculpted using adjacent optical traps by controlling their respective power levels and separation. Whereas the dynamical…

数据分析、统计与概率 · 物理学 2008-03-05 David Wu , Kingshuk Ghosh , Mandar Inamdar , Heun Jin Lee , Scott Fraser , Ken Dill , Rob Phillips

A proposed paradigm for out-of-equilibrium quantum systems is that an analogue of quantum phase transitions exists between parameter regimes of qualitatively distinct time-dependent behavior. Here, we present evidence of such a transition…

The article reviews recent developments in the theory of fluctuations and correlations of energy levels and eigenfunction amplitudes in diffusive mesoscopic samples. Various spatial geometries are considered, with emphasis on…

无序系统与神经网络 · 物理学 2009-10-31 Alexander D. Mirlin

Self-propelled particles that are subject to noise are a well-established generic model system for active matter. A homogeneous alignment field can be used to orient the direction of the self-propulsion velocity and to model systems like…

统计力学 · 物理学 2024-03-06 Sameh Othman , Jiarul Midya , Thorsten Auth , Gerhard Gompper

A universal $k^{-4}$ decay of the large-momentum tails of the momentum distribution, fixed by Tan's contact coefficients, constitutes a direct signature of strong correlations in a short-range interacting quantum gas. Here we consider a…

Starting from expressions in Connor et al. (1988) [1], we derive a one-dimensional tearing equation similar to the approximate equation obtained by Hegna and Callen (1984) [2] and by Nishimura et al (1998) [3], but for more realistic…

等离子体物理 · 物理学 2018-06-21 J. W. Connor , R. J. Hastie , C. Marchetto , C. M. Roach

Calculations of stable and metastable magnetic states as well as minimum energy paths for transitions between states are carried out using a noncollinear extension of the multiple-impurity Alexander-Anderson model and a magnetic force…

介观与纳米尺度物理 · 物理学 2015-06-19 Pavel F. Bessarab , Valery M. Uzdin , Hannes Jónsson

The theory of magnetohydrodynamic (MHD) turbulence predicts that Alfv\'enic and slow-mode-like compressive fluctuations are energetically decoupled at small scales in the inertial range. The partition of energy between these fluctuations…

高能天体物理现象 · 物理学 2022-06-10 Y. Kawazura , A. A. Schekochihin , M. Barnes , W. Dorland , S. A. Balbus

We develop a linearly-scaling variant of the Force Coupling Method [K. Yeo and M. R. Maxey, J. Fluid Mech. 649, 205-231 (2010)] for computing hydrodynamic interactions among particles confined to a doubly-periodic geometry with either a…

Spinless, interacting electrons on a finite size triangular lattice moving in an extremely strong perpendicular magnetic field are studied and compared with the results on a square lattice. Using a Falicov-Kimball model, the effects of the…

强关联电子 · 物理学 2016-11-23 Subhasree Pradhan

Alfv\'enic modes in the current quench (CQ) stage of the tokamak disruption have been observed in experiments. In DIII-D the excitation of these modes is associated with the presence of high-energy runaway electrons, and a strong mode…

等离子体物理 · 物理学 2023-03-08 Chang Liu , Andrey Lvovskiy , Carlos Paz-Soldan , Stephen C. Jardin , Amitava Bhattacharjee

We develop a realistic protocol to observe a robust topological dynamics of two-particle bound states in a lattice model with on-site interactions and suitably designed time-dependent hoppings. This Floquet scheme can be realistically…

量子物理 · 物理学 2022-03-14 Anna Berti , Iacopo Carusotto