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Tools of the intrinsic analysis on manifolds, helpful in solving the invariant inverse problem of the calculus of variations are being presented comprising a combined approach which consists in the simultaneous imposition of symmetry…

综合数学 · 数学 2017-08-22 Roman Ya. Matsyuk

We consider the problem of reconstructing the features of a weak anisotropic background potential by the trajectories of vortex dipoles in a nonlinear Gross-Pitaevskii equation. At leading order, the dynamics of vortex dipoles are given by…

偏微分方程分析 · 数学 2017-11-22 Ru-Yu Lai , Ravi Shankar , Daniel Spirn , Gunther Uhlmann

Quantum annealing with the D-Wave Advantage system in the random Ising model on a cubic lattice is simulated using a three-dimensional (3D) tensor network. The Hamiltonian is driven across a quantum phase transition from a paramagnetic…

量子物理 · 物理学 2026-03-18 Jacek Dziarmaga

Riemannian manifold Hamiltonian Monte Carlo (RMHMC) is a sampling algorithm that seeks to adapt proposals to the local geometry of the posterior distribution. The specific form of the Hamiltonian used in RMHMC necessitates {\it…

统计计算 · 统计学 2021-11-22 James A. Brofos , Roy R. Lederman

In this paper, we extend our work to the Bayesian inverse problems for inferring unknown forcing and initial condition of the forward Navier-Stokes equation coupled with tracer equation with noisy Lagrangian observation on the positions of…

数值分析 · 数学 2024-03-20 Juntao Yang

The pressure of a gas of particles with a uniformly repulsive pair interaction in a finite container is shown to satisfy (exactly as a formal object) a "viscous" Hamilton-Jacobi (H-J) equation whose solution in power series is recursively…

数学物理 · 物理学 2014-03-10 David Brydges , Domingos H. U. Marchetti

The inverse Ising problem seeks to reconstruct the parameters of an Ising Hamiltonian on the basis of spin configurations sampled from the Boltzmann measure. Over the last decade, many applications of the inverse Ising problem have arisen,…

无序系统与神经网络 · 物理学 2017-09-13 Johannes Berg

The following electromagnetism (EM) inverse problem is addressed. It consists in estimating local radioelectric properties of materials recovering an object from global EM scattering measurements, at various incidences and wave frequencies.…

应用统计 · 统计学 2015-06-12 François Giraud , Pierre Minvielle , Pierre Del Moral

We introduce in this document a direct method allowing to solve numerically inverse type problems for linear parabolic equations. We consider the reconstruction of the full solution of the parabolic equation posed in $\Omega\times (0,T)$ -…

最优化与控制 · 数学 2024-02-11 Arnaud Munch , Diego Souza

We introduce a natural definition of $L^p$-convergence of maps, $p \ge 1$, in the case where the domain is a convergent sequence of measured metric space with respect to the measured Gromov-Hausdorff topology and the target is a…

微分几何 · 数学 2007-05-23 Kazuhiro Kuwae , Takashi Shioya

The inversion-asymmetry of the emission source in relativistic heavy ion collision under the Bertsch-Pratt convention is discussed and explicitly exhibited by a Monte Carlo model. The Gaussian source function popularly used in the HBT…

核理论 · 物理学 2007-05-23 Liu Lianshou , Shi Shusu , Du Jiaxin

An entropic formulation of relativistic continuum mechanics is developed in the Landau-Lifshitz frame. We introduce two spatial scales, one being the small scale representing the linear size of each material particle and the other the large…

高能物理 - 理论 · 物理学 2011-09-02 Masafumi Fukuma , Yuho Sakatani

We present a new lower bound on the differential entropy rate of stationary processes whose sequences of probability density functions fulfill certain regularity conditions. This bound is obtained by showing that the gap between the…

信息论 · 计算机科学 2017-08-30 Meik Dörpinghaus

We study an inverse problem of determining a time-dependent damping coefficient and potential appearing in the wave equation in a compact Riemannian manifold of dimension three or higher. More specifically, we are concerned with the case of…

偏微分方程分析 · 数学 2024-07-26 Boya Liu , Teemu Saksala , Lili Yan

We present an application of autoregressive neural networks to Monte Carlo simulations of quantum spin chains using the correspondence with classical two-dimensional spin systems. We use a hierarchy of neural networks capable of estimating…

量子物理 · 物理学 2026-05-19 Piotr Białas , Piotr Korcyl , Tomasz Stebel , Dawid Zapolski

The classical inward pointing condition (IPC) for a control system whose state $x$ is constrained in the closure $C:=\bar\Omega$ of an open set $\Omega$ prescribes that at each point of the boundary $x\in \partial \Omega$ the intersection…

最优化与控制 · 数学 2021-10-27 Giovanni Colombo , Nathalie T. Khalil , Franco Rampazzo

We consider the Riemann manifold Hamiltonian Monte Carlo (RMHMC) method for solving statistical inverse problems governed by partial differential equations (PDEs). The power of the RMHMC method is that it exploits the geometric structure…

统计理论 · 数学 2015-06-22 Tan Bui-Thanh , Mark Girolami

We examine the minimization of information entropy for measures on the phase space of bounded domains, subject to constraints that are averages of grand canonical distributions. We describe the set of all such constraints and show that it…

数学物理 · 物理学 2019-10-02 Stamatis Dostoglou , Alexander Hughes , Jianfei Xue

Inverse problems involving partial differential equations (PDEs) are widely used in science and engineering. Although such problems are generally ill-posed, different regularisation approaches have been developed to ameliorate this problem.…

应用统计 · 统计学 2022-03-23 Jan Povala , Ieva Kazlauskaite , Eky Febrianto , Fehmi Cirak , Mark Girolami

We propose a deterministic particle method for a one-dimensional nonlocal equation with interactions through the repulsive Morse potential. We show that the particle method converges as the number of particles goes to infinity towards weak…

偏微分方程分析 · 数学 2024-01-22 Marco Di Francesco , Valeria Iorio , Markus Schmidtchen