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Related papers: Lieb-Thirring inequalities on the torus

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We derive a Pauli exclusion principle for extended fermion-based anyons of any positive radius and any non-trivial statistics parameter. That is, we consider 2D fermionic particles coupled to magnetic flux tubes of non-zero radius, and…

Mathematical Physics · Physics 2023-01-18 Théotime Girardot , Nicolas Rougerie

In this paper, we study the connectedness and compactness of the attainability set of weak solutions to the three-dimensional Navier--Stokes equations with damping. Depending on the value of the parameter \b{eta}, which controls the damping…

Analysis of PDEs · Mathematics 2025-07-31 Daniel Pardo , José Valero , Ángel Giménez

We review recent results on functional inequalities for systems of orthonormal functions. The key finding is that for various operators the orthonormality leads to a gain over a simple application of the triangle inequality. The operators…

Functional Analysis · Mathematics 2021-09-29 Rupert L. Frank

Using a correspondence between the spectrum of the damped wave equation and non-self-adjoint Schroedinger operators, we derive various bounds on complex eigenvalues of the former. In particular, we establish a sharp result that the…

Spectral Theory · Mathematics 2022-08-22 David Krejcirik , Tereza Kurimaiova

A logarithmic type Lieb-Thirring inequality for two-dimensional Schroedinger operators is established. The result is applied to prove spectral estimates on trapped modes in quantum layers.

Mathematical Physics · Physics 2010-09-24 Hynek Kovarik , Semjon Vugalter , Timo Weidl

We study the dimensions of the attractors for the fractional Navier--Stokes--Voigt equations. These equations, which include a fractional order of the Stokes operator applied to the time derivative, serve as natural extensions and…

Analysis of PDEs · Mathematics 2025-11-10 Alexei Ilyin , Varga Kalantarov , Sergey Zelik

We prove the existence of small amplitude, time-quasi-periodic solutions (invariant tori) for the incompressible Navier-Stokes equation on the $d$-dimensional torus $\T^d$, with a small, quasi-periodic in time external force. We also show…

Analysis of PDEs · Mathematics 2020-05-28 Riccardo Montalto

The convective Brinkman--Forchheimer equations or the Navier--Stokes equations with damping in bounded or periodic domains $\subset\mathbb{R}^d$, $2\leq d\leq 4$ are considered in this work. The existence and uniqueness of a global weak…

Analysis of PDEs · Mathematics 2025-01-01 Sagar Gautam , Manil T. Mohan

We consider the incompressible Euler or Navier-Stokes (NS) equations on a d-dimensional torus T^d; the quadratic term in these equations arises from the bilinear map sending two velocity fields v, w : T^d -> R^d into v . D w, and also…

Analysis of PDEs · Mathematics 2013-03-26 Carlo Morosi , Livio Pizzocchero

We consider a model of quantum-mechanical particles interacting via point interactions of infinite scattering length. In the case of fermions we prove a Lieb-Thirring inequality for the energy, i.e., we show that the energy is bounded from…

Mathematical Physics · Physics 2015-06-03 Rupert L. Frank , Robert Seiringer

We establish Lieb-Thirring power bounds on discrete eigenvalues of Jacobi operators for Schatten class perturbations under very general assumptions. Our results apply, in particular, to perturbations of reflectionless Jacobi operators with…

Spectral Theory · Mathematics 2017-09-25 Jacob S. Christiansen , Maxim Zinchenko

Let $E_i(H)$ denote the negative eigenvalues of the one-dimensional Schr\"odinger operator $Hu:=-u^{\prime\prime}-Vu,\ V\geq 0,$ on $L_2({\Bbb R})$. We prove the inequality \sum_i|E_i(H)|^\gamma\leq L_{\gamma,1}\int_{\Bbb R}…

Quantum Physics · Physics 2016-09-08 Timo Weidl

We show that phase space bounds on the eigenvalues of Schr\"{o}dinger operators can be derived from universal bounds recently obtained by E. M. Harrell and the author via a monotonicity property with respect to coupling constants. In…

Mathematical Physics · Physics 2008-10-13 Joachim Stubbe

The Pauli operator describes the energy of a nonrelativistic quantum particle with spin 1/2 in a magnetic field and an external potential. Bounds on the sum of the negative eigenvalues are called magnetic Lieb-Thirring (MLT) inequalities.…

Mathematical Physics · Physics 2009-11-10 Laszlo Erdos , Jan Philip Solovej

We prove that the optimal constant in the Lieb--Thirring inequality on a star graph with $N$ edges coincides with that on $\mathbb R$ if $N$ is even. For odd $N$ we show that this property holds when restricting to radial potentials and we…

Spectral Theory · Mathematics 2015-03-25 Semra Demirel-Frank

This paper concerns the tempered pullback dynamics of 2D incompressible non-autonomous Navier-Stokes equation with non-homogeneous boundary condition on Lipschitz-like domain. With the presence of a time-dependent external force f(t) which…

Analysis of PDEs · Mathematics 2018-04-24 Xin-Guang Yang , Yuming Qin , To Fu Ma , Yongjin Lu

In this paper, we consider a damped Navier-Stokes-Bardina model posed on the whole three-dimensional. These equations have an important physical motivation and they arise from some oceanic model. From the mathematical point of view, they…

Analysis of PDEs · Mathematics 2021-07-27 Manuel Fernando Cortez , Oscar Jarrín

We prove reducibility of a transport equation on the $d$-dimensional torus $T^d$ with a time quasi-periodic unbounded perturbation. As far as we know this is the first example of a reducibility result for an equation in more than one…

Mathematical Physics · Physics 2019-06-26 Dario Bambusi , Beatrice Langella , Riccardo Montalto

The Navier--Stokes equation in the bidimensional torus is considered, with initial velocity and forcing term in suitable Besov spaces. Results of local existence and uniqueness are proven; under further restriction on the indexes defining…

Analysis of PDEs · Mathematics 2009-09-29 Z. Brzezniak , B. Ferrario

Using the concept of stationary statistical solution, which generalizes the notion of invariant measure, it is proved that, in a suitable sense, time averages of almost every Leray-Hopf weak solution of the three-dimensional incompressible…

Analysis of PDEs · Mathematics 2015-06-11 Ciprian Foias , Ricardo M. S. Rosa , Roger Temam