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MRT unstable plumes are observed in a loop-like eruptive prominence using SDO/AIA observations. The small-scale cavities are developed within the prominence, where perturbations trigger dark plumes (P1 \& P2) propagating with the speed of…

Solar and Stellar Astrophysics · Physics 2019-03-27 Sudheer K. Mishra , A. K. Srivastava

We show that spontaneous time-reversal-symmetry (TRS) breaking can naturally arise from the interplay between pair density wave (PDW) ordering at multiple momenta and nesting of Fermi surfaces (FS). Concretely, we consider pair-density-wave…

Superconductivity · Physics 2022-10-12 Jin-Tao Jin , Kun Jiang , Hong Yao , Yi Zhou

A new classical TM stability simulation workflow has been developed that solves the resistive inner-layer equations in a plasma slab to yield a linear, quasi-toroidal TM growth rate $\gamma$ and mode rotation frequency $\omega$. This…

Plasma Physics · Physics 2026-03-13 D. A. Burgess , N. C. Logan , J. -K. Park , C. Paz-Soldan

Dendritic growth patterns exhibiting four-fold anisotropy are observed when polyethylene oxide undergoes phase segregation from a solution phase to a solid phase. When this phase transition occurs on a substrate that has patterns of…

Soft Condensed Matter · Physics 2018-03-28 Joel Martis , Kaushik Satapathy , P R Shaina , C V Krishnamurthy , Manu Jaiswal

A three-dimensional mesoscopic viscoplasticity model for simulating rate-dependent plasticity and creep in unidirectional thermoplastic composites is presented. The constitutive model is a transversely isotropic extension of an isotropic…

Computational Engineering, Finance, and Science · Computer Science 2025-10-01 P. Hofman , D. Kovačević , F. P. van der Meer , L. J. Sluys

Plasmoid-mediated reconnection plays a fundamental role in different solar atmospheric phenomena. Numerical reproduction of this process is therefore essential for developing robust solar models. Our goal is to assess plasmoid-mediated…

Solar and Stellar Astrophysics · Physics 2024-03-13 Øystein Håvard Færder , Daniel Nóbrega-Siverio , Mats Carlsson

Magnetohydrodynamic turbulence and magnetic reconnection are ubiquitous in astrophysical environments. In most situations, these processes do not occur in isolation, but interact with each other. This renders a comprehensive theory of these…

Plasma Physics · Physics 2018-03-29 L. Comisso , Y. -M. Huang , M. Lingam , E. Hirvijoki , A. Bhattacharjee

Results from 2.5D and 3D studies of the onset and development of the tearing instability are presented, using high fidelity resistive MHD simulations. A limited parameter study of the strength of the reconnecting field (or shear angle) was…

Solar and Stellar Astrophysics · Physics 2022-03-30 Lars K. S. Daldorff , James E. Leake , James A. Klimchuk

The effect of a parallel velocity shear on the explosive phase of a double current sheet system is investigated within the 2D resistive magnetohydrodynamic (MHD) framework. We further explore the effect of this shear on acceleration of test…

Plasma Physics · Physics 2021-09-01 Arghyadeep Paul , Bhargav Vaidya

The observation of hydrodynamic transport in the metallic delafossite PdCoO$_2$ has increased interest in this family of highly conductive oxides, but experimental studies so far have mostly been confined to bulk crystals. In this work, the…

Strongly Correlated Electrons · Physics 2022-09-23 David Barbalas , Anaëlle Legros , Gaurab Rimal , Seongshik Oh , N. P. Armitage

Understanding the origin and structure of mean magnetic fields in astrophysical conditions is a major challenge. Shear flows often coexist in such astrophysical conditions and the role of flow shear on dynamo mechanism is only beginning to…

Plasma Physics · Physics 2023-11-21 Shishir Biswas , Rajaraman Ganesh

We theoretically study the nematic ordering transition of rods that are able to elastically adjust their mutually excluded volumes. The model rods, which consist of a hard core surrounded by a deformable shell, mimic the structure of…

Soft Condensed Matter · Physics 2009-11-11 K. Shundyak , R. van Roij , P. van der Schoot

We theoretically study the Coulomb drag resistivity and plasmon modes behavior for a system composed of two parallel p-type doped GaS monolayers with Mexican-hat valence energy band using the Boltzmann transport theory formalism. We…

Mesoscale and Nanoscale Physics · Physics 2022-01-07 S. Rostami , T. Vazifehshenas , T. Salavati-fard

We confront a recent visco-plastic description of dense granular flows [P. Jop et al, Nature, {\bf 441} (2006) 727] with multi-directional inhomogeneous steady flows observed in non-smooth contact dynamics simulations of 2D half-filled…

Soft Condensed Matter · Physics 2009-11-06 P. -P. Cortet , D. Bonamy , F. Daviaud , O. Dauchot , B. Dubrulle , M. Renouf

We explore topological transitions in the type of propagation of surface electromagnetic modes in massive anisotropic tilted Dirac systems. The presence of tilting and mass gives rise to an indirect band gap that strongly modifies the joint…

Mesoscale and Nanoscale Physics · Physics 2022-06-02 M. A. Mojarro , R. Carrillo-Bastos , Jesús A. Maytorena

A 2D linear theory of the instability of Sweet-Parker (SP) current sheets is developed in the framework of Reduced MHD. A local analysis is performed taking into account the dependence of a generic equilibrium profile on the outflow…

Plasma Physics · Physics 2015-06-11 N. F. Loureiro , A. A. Schekochihin , D. A. Uzdensky

The evolution of surface layers of a glassy material heated by a laser pulse above the glass transition temperature and cooled by heat diffusion is considered as the flow of a stretchable viscous fluid. The strong dependence of viscosity on…

Optics · Physics 2024-09-11 Nikita Bityurin , Natalia Sapogova

The presence of dispersed-phase droplets can result in a notable increase in the system's drag. However, our understanding of the mechanism underlying this phenomenon remains limited. In this study, we use three-dimensional direct numerical…

Fluid Dynamics · Physics 2024-11-21 Jinghong Su , Yi-bao Zhang , Cheng Wang , Lei Yi , Fan Xu , Yaning Fan , Junwu Wang , Chao Sun

This study examines the flow of dense granular materials under external shear stress and pressure using discrete element method simulations. In this method, the material is allowed to strain along all periodic directions and adapt its solid…

Soft Condensed Matter · Physics 2020-11-24 Ishan Srivastava , Leonardo E. Silbert , Gary S. Grest , Jeremy B. Lechman

Beneitez et al. (Phys. Rev. Fluids, 8, L101901, 2023) have recently discovered a new linear "polymer diffusive instability" (PDI) in inertialess rectilinear viscoelastic shear flow using the FENE-P model when polymer stress diffusion is…

Fluid Dynamics · Physics 2024-02-19 Miles M. P. Couchman , Miguel Beneitez , Jacob Page , Rich R. Kerswell