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Numerical relativity (NR) enables the study of physics in strong and dynamical gravitational fields and provides predictions for the gravitational-wave signals produced by merging black holes. Despite the impressive accuracy of modern…

广义相对论与量子宇宙学 · 物理学 2025-10-15 Richard Dyer , Christopher J. Moore

According to Berry a wave-chaotic state may be viewed as a superposition of monochromatic plane waves with random phases and amplitudes. Here we consider the distribution of nodal points associated with this state. Using the property that…

混沌动力学 · 物理学 2009-10-31 Alexander I. Saichev , Karl-Fredrik Berggren , Almas F. Sadreev

This paper considers the problem of recovering a $k$-sparse, $N$-dimensional complex signal from Fourier magnitude measurements. It proposes a Fourier optics setup such that signal recovery up to a global phase factor is possible with very…

信息论 · 计算机科学 2014-10-28 Çağkan Yapar , Volker Pohl , Holger Boche

We propose a method for quantum noise extraction from the interference of laser pulses with random phase. Our technique is based on the calculation of a parameter, which we called the quantum reduction factor, and which allows determining…

For a sample of absolutely bounded i.i.d. random variables with a continuous density the cumulative distribution function of the sample variance is represented by a univariate integral over a Fourier series. If the density is a polynomial…

统计理论 · 数学 2008-10-10 T. Royen

We consider a model for 2D electrons in a very strong magnetic field (i.e. projected onto a single Landau level) and a random potential $V$. The computation of the averaged Green function for this system reduces to calculating the averaged…

凝聚态物理 · 物理学 2009-10-30 A. Kristoffersen , K. Olaussen

We consider the analysis of continuous repeated measurement outcomes that are collected through time, also known as longitudinal data. A standard framework for analysing data of this kind is a linear Gaussian mixed-effects model within…

统计方法学 · 统计学 2018-04-10 Özgür Asar , David Bolin , Peter J. Diggle , Jonas Wallin

The distribution of the sum of r-th power of standard normal random variables is a generalization of the chi-squared distribution. In this paper, we represent the probability density function of the random variable by an one-dimensional…

经典分析与常微分方程 · 数学 2018-06-25 Tamio Koyama

Auto- and cross-spectral density functions for dynamic {random} fields and power are derived. These are based on first- and second-order Pad\'{e} approximants of correlation functions expanded in terms of spectral moments. The second-order…

经典物理 · 物理学 2024-04-04 Luk R. Arnaut

This article describes a multivariate polynomial regression method where the uncertainty of the input parameters are approximated with Gaussian distributions, derived from the central limit theorem for large weighted sums, directly from the…

机器学习 · 统计学 2013-10-04 Peter Kovesarki , Ian C. Brock

The Gaussian mixture distribution is important in various statistical problems. In particular it is used in the Gaussian-sum filter and smoother for linear state-space model with non-Gaussian noise inputs. However, for this method to be…

统计方法学 · 统计学 2020-01-06 Genshiro Kitagawa

We present a statistical analysis of a variant of the periodogram method that forms power spectral density estimates by cross-correlating the discrete Fourier transforms of adjacent time windows. The proposed estimator is closely related to…

统计理论 · 数学 2026-03-24 Mark Magsino

The standard noise model in gravitational wave (GW) data analysis assumes detector noise is stationary and Gaussian distributed, with a known power spectral density (PSD) that is usually estimated using clean off-source data. Real GW data…

广义相对论与量子宇宙学 · 物理学 2015-09-16 Matthew C. Edwards , Renate Meyer , Nelson Christensen

I calculate the statistics of correlation of two digitized noiselike signals, which are drawn from complex Gaussian distributions, sampled, quantized, correlated, and averaged. Averaged over many such samples, the correlation r approaches a…

天体物理学 · 物理学 2009-11-11 Carl Gwinn

This paper derives the analytic form of the $h$-step ahead prediction density of a GARCH(1,1) process under Gaussian innovations, with a possibly asymmetric news impact curve. The contributions of the paper consists both in the derivation…

统计理论 · 数学 2021-03-05 Karim M. Abadir , Alessandra Luati , Paolo Paruolo

In estimation theory, the Kushner equation provides the evolution of the probability density of the state of a dynamical system given continuous-time observations. Building upon our recent work, we propose a new way to approximate the…

机器学习 · 统计学 2023-10-04 Marc Lambert , Silvère Bonnabel , Francis Bach

In this paper we derive tight bounds on the expected value of products of {\em low influence} functions defined on correlated probability spaces. The proofs are based on extending Fourier theory to an arbitrary number of correlated…

概率论 · 数学 2009-06-01 Elchanan Mossel

We consider the quantum expectation value \mathcal{A}=\<\psi|A|\psi\> of an observable A over the state |\psi\> . We derive the exact probability distribution of \mathcal{A} seen as a random variable when |\psi\> varies over the set of all…

量子物理 · 物理学 2015-06-04 Lorenzo Campos Venuti , Paolo Zanardi

We present a continuous-time probabilistic approach for estimating the chirp signal and its instantaneous frequency function when the true forms of these functions are not accessible. Our model represents these functions by non-linearly…

机器学习 · 统计学 2023-03-22 Zheng Zhao , Simo Särkkä , Jens Sjölund , Thomas B. Schön

The problem of distributed estimation of a parametric physical field is stated as a maximum likelihood estimation problem. Sensor observations are distorted by additive white Gaussian noise. Prior to data transmission, each sensor quantizes…

信息论 · 计算机科学 2012-09-21 Natalia A. Schmid , Marwan Alkhweldi , Matthew C. Valenti