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This paper addresses the trajectory-tracking problem for a class of electromechanical systems. To this end, the dynamics of the plants are modeled in the so-called port-Hamiltonian framework. Then, the notion of contraction is exploited to…

系统与控制 · 电气工程与系统科学 2023-11-14 Najmeh Javanmardi , Pablo Borja , Jacquelien M. A. Scherpen

We consider a classical field theory whose equations of motion follow from the least action principle, but the class of admissible trajectories is restricted by differential equations. The key element of the proposed construction is the…

数学物理 · 物理学 2025-08-14 Simon Lyakhovich , Nikita Sinelnikov

A quantum particle evolving by Schr\"odinger's equation contains, from the kinetic energy of the particle, a term in its Hamiltonian proportional to Laplace's operator. In discrete space, this is replaced by the discrete or graph Laplacian,…

量子物理 · 物理学 2016-09-16 Thomas G. Wong , Luís Tarrataca , Nikolay Nahimov

In optimal transport, quadratic regularization is an alternative to entropic regularization when sparse couplings or small regularization parameters are desired. Quadratic regularization penalizes transport couplings by the squared $L^2$…

最优化与控制 · 数学 2026-05-20 Alberto González-Sanz , Marcel Nutz , Andrés Riveros Valdevenito

Neutral particles can be guided and focussed using electric field gradients that focus in one transverse direction and defocus in the other, alternating between the two directions. Such a guide is suitable for transporting particles that…

原子物理 · 物理学 2008-12-22 M. R. Tarbutt , E. A. Hinds

This work is devoted to the analysis of the linear Boltzmann equation in a bounded domain, in the presence of a force deriving from a potential. The collision operator is allowed to be degenerate in the following two senses: (1) the…

偏微分方程分析 · 数学 2014-02-03 Daniel Han-Kwan , Matthieu Léautaud

We show a new mechanism to extract energy from non-equilibrium fluctuations typical of periodically driven non-Hermitian systems. The transduction of energy between the driving force and the system is revealed by an \emph{anomalous}…

统计力学 · 物理学 2009-10-31 T. Alarcon , A. Perez-Madrid , J. M. Rubi

We study the stability of an equilibrium point in a conservative Hamiltonian system in the case that equilibrium is not a minimum of the potential energy and this fact is shown by a jet of this function. Thanks to a modification of a result…

经典分析与常微分方程 · 数学 2016-03-08 G. J. Alva , M. V. P. Garcia

We consider a graph theoretic approach to the performance and robustness of a platoon of vehicles, where each vehicle communicates with its $k$-nearest neighbors. In particular, we quantify the platoon's stability margin, robustness to…

最优化与控制 · 数学 2016-07-08 Mohammad Pirani , Ehsan Hashemi , John W. Simpson-Porco , Baris Fidan , Amir Khajepour

A theoretical study is reported of electron transport at finite temperature in a double quantum dot (DQD) capacitively coupled to a quantum point contact (QPC). Starting from a Hamiltonian model, a master equation is obtained for the…

介观与纳米尺度物理 · 物理学 2015-06-15 Gregory Bulnes Cuetara , Massimiliano Esposito , Gernot Schaller , Pierre Gaspard

Jarzynski's identity for the free energy difference between two equilibrium states can be viewed as a special case of a more general procedure based on phase space mappings. Solving a system's equation of motion by approximate means…

统计力学 · 物理学 2009-11-11 Wolfgang Lechner , Harald Oberhofer , Christoph Dellago , Phillip L. Geissler

For the first time, the energy diffusion approximation is confronted at the percent level with the exact numerical modeling of thermal decay of a metastable state. The latter is performed using the quasistationary decay rates resulting from…

核理论 · 物理学 2019-08-13 Igor I. Gontchar , Maria V. Chushnyakova

We introduce and study a deterministic lattice model describing the motion of an infinite system of oppositely charged particles under the action of a constant electric field. As an application this model represents a traffic flow of cars…

动力系统 · 数学 2009-11-13 Michael Blank

A central goal of thermodynamics is to identify optimal processes during which the least amount of energy is dissipated into the environment. Generally, even for simple systems, such as the parametric harmonic oscillator, optimal control…

统计力学 · 物理学 2018-10-11 Marcus V. S. Bonança , Sebastian Deffner

This paper presents a trajectory generation method that optimizes a quadratic cost functional with respect to linear system dynamics and to linear input and state constraints. The method is based on continuous-time flatness-based trajectory…

系统与控制 · 计算机科学 2012-11-27 Jean-Francois Stumper , Ralph Kennel

Vehicle platooning facilitates the partial automation of vehicles and can significantly reduce fuel consumption. Mobile communication infrastructure makes it possible to dynamically coordinate the formation of platoons en route. We consider…

系统与控制 · 计算机科学 2016-02-25 Sebastian van de Hoef , Karl H. Johansson , Dimos V. Dimarogonas

We present a construction of harmonic functions on bounded domains for the spectral fractional Laplacian operator and we classify them in terms of their divergent profile at the boundary. This is used to establish and solve boundary value…

偏微分方程分析 · 数学 2015-09-22 Nicola Abatangelo , Louis Dupaigne

This paper is a sequel to Chaika and Krishnan [arXiv:1612.00434]. We again consider translation invariant measures on families of nearest-neighbor semi-infinite walks on the integer lattice Z^d. We assume that once walks meet, they…

概率论 · 数学 2021-03-19 Jon Chaika , Arjun Krishnan

We study observables in a conformal field theory which are very closely related to the ones used to describe hadronic events at colliders. We focus on the correlation functions of the energies deposited on calorimeters placed at a large…

高能物理 - 理论 · 物理学 2009-10-16 Diego M. Hofman , Juan Maldacena

We calculate the energy of a homogeneous one component plasma and find that the energy is lower for correlated motions of the particles as compared to uncorrelated motion. Our starting point is the conserved approximately relativistic…

等离子体物理 · 物理学 2009-11-13 Hanno Essen