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In this paper we study dispersive wave equation using the method of multiple scales (MMS) and perform several numerical tests to investigate its accuracy. The key feature of our MMS solution is the linearity of the amplitude equation and…

数值分析 · 数学 2021-03-29 David Juhasz , Per Kristen Jakobsen

We explore the correspondence between one-loop Feynman integrals and (hyperbolic) simplicial geometry to describe the "all-mass" case: integrals with generic external and internal masses. Specifically, we focus on $n$-particle integrals in…

高能物理 - 理论 · 物理学 2020-08-26 Jacob L. Bourjaily , Einan Gardi , Andrew J. McLeod , Cristian Vergu

The phenomenon of many-body localised (MBL) systems has attracted significant interest in recent years, for its intriguing implications from a perspective of both condensed-matter and statistical physics: they are insulators even at…

量子气体 · 物理学 2019-07-08 M. Goihl , M. Friesdorf , A. H. Werner , W. Brown , J. Eisert

The need to enforce fermionic antisymmetry in the nuclear many-body problem commonly requires use of single-particle coordinates, defined relative to some fixed origin. To obtain physical operators which nonetheless act on the nuclear…

核理论 · 物理学 2020-12-02 M. A. Caprio , A. E. McCoy , P. J. Fasano

A formalism for the numerical integration of one- and two-loop integrals is presented. It is based on subtraction terms which remove the soft, collinear and some of the ultraviolet divergences from the integrand. The numerical integral is…

高能物理 - 唯象学 · 物理学 2012-10-08 A. Freitas

We derive relations between theoretical properties of restricted Boltzmann machines (RBMs), popular machine learning models which form the building blocks of deep learning models, and several natural notions from discrete mathematics and…

机器学习 · 统计学 2014-09-22 Guido F. Montufar , Jason Morton

In this paper, a Bayesian fusion technique for remotely sensed multi-band images is presented. The observed images are related to the high spectral and high spatial resolution image to be recovered through physical degradations, e.g.,…

计算机视觉与模式识别 · 计算机科学 2014-08-27 Qi Wei , Nicolas Dobigeon , Jean-Yves Tourneret

Work is reported on finite integral representations for 2-loop massive 2-, 3- and 4-point functions, using orthogonal and parallel space variables. It is shown that this can be utilized to cover particles with arbitrary spin (tensor…

高能物理 - 唯象学 · 物理学 2008-02-03 Dirk Kreimer

Multidimensional scaling (MDS) is a widely used approach to representing high-dimensional, dependent data. MDS works by assigning each observation a location on a low-dimensional geometric manifold, with distance on the manifold…

统计方法学 · 统计学 2023-08-16 Bolun Liu , Shane Lubold , Adrian E. Raftery , Tyler H. McCormick

Neutrino flavor evolution in dense astrophysical environments is inherently nonlinear and sensitive to many-body (MB) quantum effects beyond the mean-field (MF) approximation. Existing MB studies are constrained by small system sizes,…

高能天体物理现象 · 物理学 2026-05-22 Zoha Laraib , Sherwood Richers

This article is concerned with the existence, status and description of the so-called emergent phenomena believed to occur in certain principally planar electronic systems. In fact, two distinctly different if inseparable tasks are…

介观与纳米尺度物理 · 物理学 2009-11-10 Artur Sowa

Hyperspectral imaging systems based on multiple-beam interference (MBI), such as Fabry-Perot interferometry, are attracting interest due to their compact design, high throughput, and fine resolution. Unlike dispersive devices, which measure…

信号处理 · 电气工程与系统科学 2024-10-30 Mohamad Jouni , Daniele Picone , Mauro Dalla Mura

We give a new method for the evaluation of a class of integrals of rational symmetric functions in N pairs of variables {x_a, y_a}_{a=1,... N} arising in coupled matrix models, valid for a broad class of two-variable measures. The result is…

数学物理 · 物理学 2007-05-23 J. Harnad , A. Yu. Orlov

We present quadrature schemes to calculate matrices, where the so-called modified Hilbert transformation is involved. These matrices occur as temporal parts of Galerkin finite element discretizations of parabolic or hyperbolic problems when…

数值分析 · 数学 2022-07-26 Marco Zank

Brane tilings describe Lagrangians (vector multiplets, chiral multiplets, and the superpotential) of four dimensional $\mathcal{N}=1$ supersymmetric gauge theories. These theories, written in terms of a bipartite graph on a torus,…

高能物理 - 理论 · 物理学 2016-09-02 Amihay Hanany , Vishnu Jejjala , Sanjaye Ramgoolam , Rak-Kyeong Seong

We introduce a new category of differential graded multi-oriented props whose representations (called homotopy algebras with branes) in a graded vector space require a choice of a collection of $k$ linear subspaces in that space, $k$ being…

量子代数 · 数学 2019-12-10 Sergei Merkulov

We investigate finite-$N$ corrections to the superconformal indices of the theories realized on M2- and M5-branes. For three-dimensional theories realized on a stack of $N$ M2-branes we calculate the finite-$N$ corrections as the…

高能物理 - 理论 · 物理学 2020-12-02 Reona Arai , Shota Fujiwara , Yosuke Imamura , Tatsuya Mori , Daisuke Yokoyama

We review certain classes of iterated integrals that appear in the computation of Feynman integrals that involve elliptic functions. These functions generalise the well-known class of multiple polylogarithms to elliptic curves and are…

高能物理 - 唯象学 · 物理学 2018-07-18 Johannes Broedel , Claude Duhr , Falko Dulat , Brenda Penante , Lorenzo Tancredi

In this talk we discuss Feynman integrals which are related to elliptic curves. We show with the help of an explicit example that in the set of master integrals more than one elliptic curve may occur. The technique of maximal cuts is a…

高能物理 - 唯象学 · 物理学 2018-07-11 Luise Adams , Ekta Chaubey , Stefan Weinzierl

Integral representations of hypergeometric functions proved to be a very useful tool for studying their properties. The purpose of this paper is twofold. First, we extend the known representations to arbitrary values of the parameters and…

经典分析与常微分方程 · 数学 2016-10-06 D. Karp , J. L. López
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