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相关论文: Thrust Distribution in Electron-Positron Annihilat…

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The present paper studies existence and distributional uniqueness of subclasses of stationary hard-core particle systems arising as thinnings of stationary particle processes. These subclasses are defined by natural maximality criteria. We…

概率论 · 数学 2018-01-17 Christian Hirsch , Günter Last

Constant temperature molecular dynamics simulations were used to study solutions of flexible polyelectrolyte chains at nonzero concentrations with explicit counterions and unscreened coulombic interactions. Counterion condensation, measured…

统计力学 · 物理学 2009-10-31 J. C. Chu , C. H. Mak

The minimum-fuel orbital transfer is analyzed in the case of a launcher upper stage using a constantly thrusting engine. The thrust level is assumed to be constant and its value is optimized together with the thrust direction. A closed-loop…

最优化与控制 · 数学 2017-04-05 Max Cerf

We study the two-body decay of a mother particle into a massless daughter. We further assume that the mother particle is unpolarized and has a generic boost distribution in the laboratory frame. In this case, we show analytically that the…

高能物理 - 唯象学 · 物理学 2015-09-24 Kaustubh Agashe , Roberto Franceschini , Doojin Kim

We construct analytic formulas that represent the coupling-constant-averaged pair distribution function $\gxcav(r_s,\zeta, k_Fu)$ of a uniform electron gas with density parameter $r_s =(9\pi/4)^{1/3}/k_F$ and relative spin polarization…

凝聚态物理 · 物理学 2009-11-07 Paola Gori-Giorgi , John P. Perdew

Cumulants of conserved charges fluctuations are regarded as a potential tool to study the criticality in the QCD phase diagram and to determine the freeze-out parameters in a model-independent way. At LHC energies, the measurements of the…

高能物理 - 实验 · 物理学 2019-02-20 Nirbhay Kumar Behera

We present an Imitation Learning approach for the control of dynamical systems with a known model. Our policy search method is guided by solutions from MPC. Typical policy search methods of this kind minimize a distance metric between the…

机器人学 · 计算机科学 2020-02-18 Jan Carius , Farbod Farshidian , Marco Hutter

Exact approximations of Markov chain Monte Carlo (MCMC) algorithms are a general emerging class of sampling algorithms. One of the main ideas behind exact approximations consists of replacing intractable quantities required to run standard…

统计计算 · 统计学 2015-10-30 Christophe Andrieu , Matti Vihola

Electron-positron annihilations at an average center-of-mass energy of 133 GeV from the four LEP-experiments are presented. This includes in particular the total cross-section and multiplicities, thrust, rapidity and transverse momentum…

高能物理 - 唯象学 · 物理学 2007-05-23 Claus Grupen

This work focuses on the robust optimization of a permanent magnet (PM) synchronous machine while considering a driving cycle. The robustification is obtained by considering uncertainties of different origins. Firstly, there are geometrical…

计算工程、金融与科学 · 计算机科学 2020-02-19 L. A. M. D'Angelo , Z. Bontinck , S. Schöps , H. De Gersem

A novel decomposition scheme to solve parametric non-convex programs as they arise in Nonlinear Model Predictive Control (NMPC) is presented. It consists of a fixed number of alternating proximal gradient steps and a dual update per time…

最优化与控制 · 数学 2014-12-25 Jean-Hubert Hours , Colin N. Jones

Steady state distribution functions can be used to calculate stability conditions for modes, radiation energy losses, and particle loss rates. Heuristic analytic approximations to these distributions can capture key behaviors of the true…

等离子体物理 · 物理学 2025-09-23 Greta X. Li , Elijah J. Kolmes , Ian E. Ochs , Nathaniel J. Fisch

In this paper we develop a general framework for constructing and analysing coupled Markov chain Monte Carlo samplers, allowing for both (possibly degenerate) diffusion and piecewise deterministic Markov processes. For many performance…

概率论 · 数学 2018-06-29 N. Nuesken , G. A. Pavliotis

In this work, we propose a new approach based on positron annihilation spectroscopy to estimate the concentration of vacancy-type defects induced by self-ion irradiation in tungsten at room temperature, 500, and 700{\deg}C. Using…

材料科学 · 物理学 2024-11-21 Zhiwei Hu , Jintong Wu , François Jomard , Fredric Granberg , Marie-France Barthe

By looking at the parity-nonconserving (PNC) asymmetries at different energies in $\vec{p} p$ scattering, it is in principle possible to determine the PNC $\rho NN$ and $\omega NN$ couplings of a single-meson-exchange model of the PNC $NN$…

核理论 · 物理学 2009-11-11 C. -P. Liu , C. H. Hyun , B. Desplanques

We derive new results comparing the asymptotic variance of diffusions by writing them as appropriate limits of discrete-time birth-death chains which themselves satisfy Peskun orderings. We then apply our results to simulated tempering…

概率论 · 数学 2014-01-16 Gareth O. Roberts , Jeffrey S. Rosenthal

We study a random circuit model of constrained fracton dynamics, in which particles on a one-dimensional lattice undergo random local motion subject to both charge and dipole moment conservation. The configuration space of this system…

统计力学 · 物理学 2023-02-08 Calvin Pozderac , Steven Speck , Xiaozhou Feng , David A. Huse , Brian Skinner

We use the results of ultra-precise cold-atom-recoil experiments to constrain the form of the energy-momentum dispersion relation, a structure that is expected to be modified in several quantum-gravity approaches. Our strategy of analysis…

广义相对论与量子宇宙学 · 物理学 2009-11-07 Giovanni Amelino-Camelia , Claus Laemmerzahl , Flavio Mercati , Guglielmo M. Tino

Effects of the adsorption-desorption process on the immittance response of an electrolytic cell are theoretically investigated in the framework of the diffusional Poisson-Nernst-Planck (PNP) continuum model, when the generation and…

This letter analyzes the contraction property of the nonlinear systems controlled by suboptimal model predictive control (MPC) using the continuation method. We propose a contraction metric that reflects the hierarchical dynamics inherent…

最优化与控制 · 数学 2025-03-06 Ryotaro Shima , Yuji Ito , Tatsuya Miyano