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We present two-dimensional crystallization results in the square lattice for finite particle systems consisting of two different atomic types. We identify energy minimizers of configurational energies featuring two-body short-ranged…

统计力学 · 物理学 2020-04-22 Manuel Friedrich , Leonard Kreutz

The Kondo-Heisenberg model is used for a microscopic demonstration of existence of a peculiar metallic state with unbroken translational symmetry where the Fermi surface volume is not controlled by the total electron density. I use a…

强关联电子 · 物理学 2016-10-19 A. M. Tsvelik

We consider a model composed of Landau quasiparticle states with patched Fermi surfaces (FS) sandwiched by states with flat FS to simulate the ``cold'' spot regions in cuprates. We calculate the one particle irreducible function and the…

超导电性 · 物理学 2019-08-17 A. Ferraz , T. Saikawa , Z. Y. Weng

We show that the one-dimensional (1D) two-fluid model (TFM) for stratified flow in channels and pipes (in its incompressible, isothermal form) satisfies an energy conservation equation, which arises naturally from the mass and momentum…

流体动力学 · 物理学 2023-10-26 J. F. H. Buist , B. Sanderse , S. Dubinkina , R. A. W. M. Henkes , C. W. Oosterlee

We study the flow of two immiscible fluids located on a solid bottom, where the lower fluid is Newtonian and the upper fluid is a non-Newtonian Ellis fluid. Neglecting gravitational effects, we consider the formal asymptotic limit of small…

偏微分方程分析 · 数学 2021-02-01 Oliver Assenmacher , Gabriele Bruell , Christina Lienstromberg

We consider the mass-critical nonlinear Schr\"odinger equation on non-compact metric graphs. A quite complete description of the structure of the ground states, which correspond to global minimizers of the energy functional under a mass…

偏微分方程分析 · 数学 2020-04-24 Dario Pierotti , Nicola Soave , Gianmaria Verzini

We prove existence and uniqueness of strong solutions to the Cucker--Smale flocking model coupled with an incompressible viscous non-Newtonian fluid, with the stress tensor of a power--law structure for $p\geq\frac{11}{5}$. The coupling is…

偏微分方程分析 · 数学 2017-02-24 Piotr B. Mucha , Jan Peszek , Milan Pokorny

In this paper, we consider the numerical solution of a binary fluid-surfactant phase field model, in which the free energy contains a nonlinear coupling entropy, a Ginzburg-Landau double well potential, and a logarithmic Flory-Huggins…

数值分析 · 数学 2017-04-05 Xiaofeng Yang , Lili Ju

We try to improve the Thomas-Fermi model for the total energy and electron density of atoms and molecules by directly modifying the Euler equation for the electron density, which we argue is less affected by nonlocal corrections. Here we…

统计力学 · 物理学 2007-05-23 Jeng-Da Chai , John D. Weeks

We investigate the motion of one and two charged non-relativistic particles on a sphere in the presence of a magnetic field of uniform strength. For one particle, the motion is always circular, and determined by a simple relation between…

数学物理 · 物理学 2026-02-17 Nataliya A. Balabanova , James Montaldi

A new variational principle - extremizing the fixed frame kinetic energy under constant relative enstrophy - for a coupled barotropic flow - rotating solid sphere system is introduced with the following consequences. In particular, angular…

数学物理 · 物理学 2009-11-11 Chjan C. Lim

We consider finite discrete systems consisting of two different atomic types and investigate ground-state configurations for configurational energies featuring two-body short-ranged particle interactions. The atomic potentials favor some…

介观与纳米尺度物理 · 物理学 2019-04-15 Manuel Friedrich , Leonard Kreutz

We study a lattice model for Marginal Fermi liquid behavior, involving a gas of electrons coupled to a dense lattice of three-body bound-states. The bound-states change the phase space for electron-electron scattering and induce a marginal…

强关联电子 · 物理学 2009-10-31 A. F. Ho , P. Coleman

We present a class of time-reversal-symmetric fractional topological liquid states in two dimensions that support fractionalized excitations. These are incompressible liquids made of electrons, for which the charge Hall conductance vanishes…

强关联电子 · 物理学 2011-10-11 Titus Neupert , Luiz Santos , Shinsei Ryu , Claudio Chamon , Christopher Mudry

We study the ionization problem in the Thomas-Fermi-Dirac-von Weizs\"acker theory for atoms and molecules. We prove the nonexistence of minimizers for the energy functional when the number of electrons is large and the total nuclear charge…

数学物理 · 物理学 2016-11-11 Phan Thành Nam , Hanne Van Den Bosch

For the stationary Gross-Pitaevskii equation with harmonic real and linear imaginary potentials in the space of one dimension, we study the ground state in the limit of large densities (large chemical potentials), where the solution…

偏微分方程分析 · 数学 2014-05-29 Clement Gallo , Dmitry Pelinovsky

Two-dimensional abelian anyons are, in the magnetic gauge picture, represented as fermions coupled to magnetic flux tubes. For the ground state of such a system in a trapping potential, we theoretically and numerically investigate a Hartree…

偏微分方程分析 · 数学 2026-04-01 Antoine Levitt , Douglas Lundholm , Nicolas Rougerie

We consider an exchange model describing two isotropic spin-1/2 Heisenberg antiferromagnets coupled by a quartic term on the square lattice. The model is relevant for systems with orbital degeneracy and strong electron-vibron coupling in…

强关联电子 · 物理学 2009-10-31 G. Santoro , S. Sorella , L. Guidoni , A. Parola , E. Tosatti

We consider the problem of existence of constrained minimizers for the focusing mass-subcritical Half-Wave equation with a defocusing mass-subcritical perturbation. We show the existence of a critical mass such that minimizers do exist for…

偏微分方程分析 · 数学 2025-04-11 Jacopo Bellazzini , Luigi Forcella

We analyze the particle-hole symmetric two-dimensional Hubbard model on a square lattice starting from weak-to-moderate couplings by means of the field-theoretical renormalization group (RG) approach up to two-loop order. This method is…

强关联电子 · 物理学 2009-11-13 Hermann Freire , Eberth Correa , Alvaro Ferraz