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We show that any bounded operator $T$ on a separable, reflexive, infinite-dimensional Banach space $X$ admits a rank one perturbation which has an invariant subspace of infinite dimension and codimension. In the non-reflexive spaces, we…

泛函分析 · 数学 2012-08-30 Alexey I. Popov , Adi Tcaciuc

We present a simplified description for spin-dependent electronic transport in honeycomb-lattice structures with spin-orbit interactions, using generalizations of the stochastic non-equilibrium model known as the totally asymmetric simple…

统计力学 · 物理学 2017-04-19 S. L. A. de Queiroz , R. B. Stinchcombe

The dynamical formulation of optimal transport, also known as Benamou-Brenier formulation or Computational Fluid Dynamics formulation, amounts to write the optimal transport problem as the optimization of a convex functional under a PDE…

数值分析 · 数学 2020-05-25 Hugo Lavenant

We apply imaginary-time evolution, ${\rm e}^{-\tau H}$, to study relaxation dynamics of gapless quantum antiferromagnets described by the spin-rotation invariant Heisenberg Hamiltonian ($H$). Using quantum Monte Carlo simulations, we…

强关联电子 · 物理学 2017-09-06 Phillip Weinberg , Anders Sandvik

In this paper we consider some new classical effects obtained for a planar electrodynamics with the presence of a higher order derivatives term. The model can be interpreted as a kind of extension for the $3d$ Maxwell-Chern-Simons…

高能物理 - 理论 · 物理学 2022-01-12 L. H. C. Borges , F. A. Barone , H. L. Oliveira

We obtain a exponential large deviation upper bound for continuous observables on suspension semiflows over a non-uniformly expanding base transformation with non-flat singularities or criticalities, where the roof function defining the…

动力系统 · 数学 2010-08-30 Vitor Araujo

Recently a new model has been proposed to describe free massive spin-2 particles in $D$ dimensions in terms of a non symmetric rank-2 tensor $e_{\mu\nu}$ and a mixed symmetry tensor $B^{\mu[\alpha\beta]}$. The model is invariant under…

高能物理 - 理论 · 物理学 2022-02-02 Alessandro L. R. dos Santos , Denis Dalmazi , Wayne de Paula

This paper investigates quenching solutions of an one-dimensional, two-sided Riemann-Liouville fractional order convection-diffusion problem. Fractional order spatial derivatives are discretized using weighted averaging approximations in…

偏微分方程分析 · 数学 2025-03-06 Rumin Dong , Lin Zhu , Qin Sheng , Bingxin Zhao

We present a theory to obtain the pressure tensor for a class of non-ideal multicomponent lattice Boltzmann models, thus extending the theory presented by Shan (X. Shan, Phys. Rev. E 77, 066702 (2008)) for single component fluids. We obtain…

统计力学 · 物理学 2014-02-20 M. Sbragaglia , D. Belardinelli

The magnetic susceptibility of the one-dimensional Hubbard model with open boundary conditions at arbitrary filling is obtained from field theory at low temperatures and small magnetic fields, including leading and next-leading orders.…

强关联电子 · 物理学 2007-05-23 M. Bortz , J. Sirker

We propose four-field and five-field Hu--Washizu-type mixed formulations for nonlinear poroelasticity -- a coupled fluid diffusion and solid deformation process -- considering that the permeability depends on a linear combination between…

数值分析 · 数学 2025-02-20 Bishnu P. Lamichhane , Ricardo Ruiz-Baier , Segundo Villa-Fuentes

Accurate determination of higher-order pressure derivatives with respect to temperature $T$ and chemical potential $\mu$ is essential for analyzing critical phenomena, transport properties, and phase transitions in strongly interacting…

高能物理 - 唯象学 · 物理学 2025-01-10 Hosein Gholami

A simple formula is derived for the maximum squeezing rate which occurs at the initial stages of the squeezing process: the rate only depends on the second partial derivatives of a classical Hamiltonian. Rules for optimum rotation of the…

量子物理 · 物理学 2015-09-30 Tomáš Opatrný

The interplay of charge, spin and lattice degrees of freedom is studied for quasi-one-dimensional electron and spin systems coupled to quantum phonons. Special emphasis is put on the influence of the lattice dynamics on the Peierls…

强关联电子 · 物理学 2009-10-31 Holger Fehske , Michael Holicki , Alexander Weiße

The `classical' model for a massive spinning particle, which was recently proposed, is derived from the isotropic rotator model. Through this derivation, we note that the spin can be understood as the relativistic extension of the isotropic…

高能物理 - 理论 · 物理学 2009-10-28 Jin-Ho Cho , Jae-Kwan Kim

We formulate a coherent approach to signals and systems theory on time scales. The two derivatives from the time-scale calculus are used, i.e., nabla (forward) and delta (backward), and the corresponding eigenfunctions, the so-called nabla…

经典分析与常微分方程 · 数学 2016-04-06 Manuel Ortigueira , Delfim F. M. Torres , Juan Trujillo

This paper studies the uncertainty principle for spherical $h$-harmonic expansions on the unit sphere of $\mathbb{R}^d$ associated with a weight function invariant under a general finite reflection group, which is in full analogy with the…

经典分析与常微分方程 · 数学 2015-11-18 Han Feng

Let $\pi:X\to Y$ be a factor map, where $(X,T)$ and $(Y,S)$ are topological dynamical systems. Let ${\bf a}=(a_1,a_2)\in {\Bbb R}^2$ with $a_1>0$ and $a_2\geq 0$, and $f\in C(X)$. The ${\bf a}$-weighted topological pressure of $f$, denoted…

动力系统 · 数学 2014-12-02 De-Jun Feng , Wen Huang

We present a compact and general derivation of the generalized Bloch-Wangsness-Redfield kinetic equations for systems with the static spin Hamiltonian utilizing the concept of the Liouville space. We show that the assumptions of short…

统计力学 · 物理学 2011-07-12 Nail Fatkullin

In this paper the issue of the determination of the fluid pressure in incompressible fluids is addressed, with particular reference to the search of algorithms which permit to advance in time the fluid pressure without actually solving…

流体动力学 · 物理学 2007-05-23 Massimo Tessarotto , Marco Ellero , Necdet Aslan , Michael Mond , Piero Nicolini