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We present a model of a topological semimetal in three dimensions (3D) whose energy spectrum exhibits a nodal line acting as a vortex ring; this in turn is linked by a pseudospin structure akin to that of a smoke ring. Contrary to a Weyl…

介观与纳米尺度物理 · 物理学 2017-01-11 Lih-King Lim , Roderich Moessner

A comprehensive study of the vortex phases and vortex dynamics is presented for a recently discovered high-temperature superconductor ThH$_{10}$ with $\textit{T}$$_C$ = 153 K at 170 GPa. The obtained results strongly suggest a quasi…

A classical long-range-interacting $N$-particle system relaxes to thermal equilibrium on time scales growing with $N$; in the limit $N\to \infty$ such a relaxation time diverges. However, a completely non-collisional relaxation process,…

统计力学 · 物理学 2022-02-09 Alessandro Santini , Guido Giachetti , Lapo Casetti

We start by surveying the planar point vortex motion of the Euler equations in the whole plane, half-plane and quadrant. Then we go on to prove non-collision property of 2-vortex system by using the explicit form of orbits of 2-vortex…

数学物理 · 物理学 2021-05-05 Cheng Yang

The dynamics and statistical properties of two-dimensional (2D) turbulence are often investigated through numerical simulations of incompressible, viscous fluids in doubly periodic domains. A key challenge in 2D turbulence research is…

In this paper we propose a Hamiltonian approach to gapped topological phases on an open surface with boundary. Our setting is an extension of the Levin-Wen model to a 2d graph on the open surface, whose boundary is part of the graph. We…

强关联电子 · 物理学 2018-01-31 Yuting Hu , Zhu-Xi Luo , Ren Pankovich , Yidun Wan , Yong-Shi Wu

This paper presents a numerical investigation of isolated filament dynamics in a simulation geometry representative of the scrape-off layer (SOL) of the Mega Amp Spherical Tokamak (MAST) previously studied in [N.R.Walkden et.al, Plasma…

等离子体物理 · 物理学 2015-10-28 N. R. Walkden , B. D. Dudson , L. Easy , G. Fishpool , J. T. Omotani

I analyze non-local symmetries of finite-size Euclidean 3D lattice Chern-Simons models in the presence of an external magnetic field and non-zero average current. It is shown that under very general assumptions the particle-vortex duality…

介观与纳米尺度物理 · 物理学 2008-02-03 Leonid P. Pryadko

To understand the interplay of d-wave superconductivity and antiferromagnetism, we consider a two-dimensional extended Hubbard model with nearest neighbor attractive interaction. The Hamiltonian is solved in the mean-field approximation on…

超导电性 · 物理学 2009-11-11 W. P. Su

Diffusive properties of a monodisperse system of interacting particles confined to a \textit{quasi}-one-dimensional (Q1D) channel are studied using molecular dynamics (MD) simulations. We calculate numerically the mean-squared displacement…

软凝聚态物质 · 物理学 2013-01-10 D. Lucena , D. V. Tkachenko , K. Nelissen , V. R. Misko , W. P. Ferreira , G. A. Farias , F. M. Peeters

We develop a model and numerical method to study the large-amplitude flutter of rectangular membranes (of zero bending rigidity) that shed a trailing vortex-sheet wake in a three-dimensional (3D) inviscid fluid flow. We apply small initial…

流体动力学 · 物理学 2022-12-21 Christiana Mavroyiakoumou , Silas Alben

Modelling incompressible ideal fluids as a finite collection of vortex filaments is important in physics (super-fluidity, models for the onset of turbulence) as well as for numerical algorithms used in computer graphics for the real time…

可精确求解与可积系统 · 物理学 2007-10-10 Ulrich Pinkall , Boris Springborn , Steffen Weissmann

We introduce and analyze a novel metallic phase of two-dimensional (2d) electrons, the Roton Fermi Liquid (RFL), which, in contrast to the Landau Fermi liquid, supports both gapless fermionic and bosonic quasiparticle excitations. The RFL…

强关联电子 · 物理学 2013-05-29 Leon Balents , Matthew P. A. Fisher

We present a class of one-dimensional generic spinless fermion lattice Hamiltonians that express quasi-Fermi liquid physics, manifesting both Luttinger and Fermi liquid features due to solely irrelevant interactions. Using infinite matrix…

强关联电子 · 物理学 2025-10-28 Joshua D. Baktay , Adrian E. Feiguin , Julian Rincon

We present the full analysis of the normal state of the spin-fermion model near the antiferromagnetic instability in two dimensions. This model describes low-energy fermions interacting with their own collective spin fluctuations, which…

超导电性 · 物理学 2007-05-23 Ar. Abanov , Andrey V. Chubukov , J. Schmalian

In this article, we extend our study on a new class of modular Hamiltonians on an interval attached to the origin on the semi-infinite line, introduced in a recent work dedicated to scalar fields. Here, we shift our attention to fermions…

高能物理 - 理论 · 物理学 2023-07-19 Marina Huerta , Guido van der Velde

Nodal line in parameter space, at which the energy gap closes up, can either be the boundary separating two topological quantum phases or two conventional phases. We study the topological feature of nodal line in parameter space via a…

介观与纳米尺度物理 · 物理学 2018-07-18 R. Wang , C. Li , X. Z. Zhang , Z. Song

We study dynamical (quasi)-condensation in the Fermi-Hubbard model starting from a completely uncorrelated initial state of adjacent doubly occupied sites. We show that upon expansion of the system in one dimension, dynamical…

强关联电子 · 物理学 2024-02-27 Iva Březinová , Markus Stimpfle , Stefan Donsa , Angel Rubio

The prediction of perturbed equilibrium models for tokamaks with small 3D fields is strongly dependent on which reference frame for axisymmetry is assumed - for example, the toroidal field (TF) coil vs the poloidal field (PF) coil centroid.…

等离子体物理 · 物理学 2025-09-29 J. Halpern , N. C. Logan , E. Paul , C. Paz-Soldan

A two-dimensional dipolar Fermi gas in harmonic trap under rotation is studied by solving "ab initio" Kohn-Sham equations. The physical parameters used match those of ultracold gas of fermionic $^{23}Na^{40}K$ molecules, a prototype system…

量子气体 · 物理学 2016-01-20 Francesco Ancilotto