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We develop an efficient algorithm for a spatially inhomogeneous matrix-valued quantum Boltzmann equation derived from the Hubbard model. The distribution functions are $2 \times 2$ matrix-valued to accommodate the spin degree of freedom,…

计算物理 · 物理学 2015-05-15 Jianfeng Lu , Christian B. Mendl

This paper discusses the solution of nonlinear integral equations with noisy integral kernels as they appear in nonparametric instrumental regression. We propose a regularized Newton-type iteration and establish convergence and convergence…

数值分析 · 数学 2015-04-01 Fabian Dunker , Jean-Pierre Florens , Thorsten Hohage , Jan Johannes , Enno Mammen

In this paper, we develop fast procedures for solving linear systems arising from discretization of ordinary and partial differential equations with Caputo fractional derivative w.r.t time variable. First, we consider a finite difference…

偏微分方程分析 · 数学 2018-02-01 Zhengguang Liu , Aijie Cheng , Xiaoli Li , Hong Wang

In this paper we firstly obtain two kinds of effective spectral density functions by setting the cut-off frequencies of baths be infinite and finite. Secondly, we investigate the reduced dynamics of open qubits in four kinds of systems…

量子物理 · 物理学 2010-01-13 Xian-Ting Liang

An analog computer makes use of continuously changeable quantities of a system, such as its electrical, mechanical, or hydraulic properties, to solve a given problem. While these devices are usually computationally more powerful than their…

新兴技术 · 计算机科学 2019-10-09 G. Alvarado Barrios , J. C. Retamal , E. Solano , M. Sanz

The Black-Scholes (B-S) equation has been recently extended as a kind of tempered time-fractional B-S equations, which becomes an interesting mathematical model in option pricing. In this study, we provide a fast numerical method to…

数值分析 · 数学 2023-07-21 Jinfeng Zhou , Xian-Ming Gu , Yong-Liang Zhao , Hu Li

We describe a framework for designing efficient active learning algorithms that are tolerant to random classification noise and are differentially-private. The framework is based on active learning algorithms that are statistical in the…

机器学习 · 计算机科学 2014-11-06 Maria Florina Balcan , Vitaly Feldman

Molecular and lattice vibrations are able to couple to the spin of electrons and lead to their relaxation and decoherence. Ab initio simulations have played a fundamental role in shaping our understanding of this process but further…

材料科学 · 物理学 2024-10-14 Valerio Briganti , Alessandro Lunghi

We present a new approach to calculate real-time quantum dynamics in complex systems. The formalism is based on the partitioning of a system's environment into "core" and "reservoir" modes, with the former to be treated quantum mechanically…

统计力学 · 物理学 2015-05-30 Timothy C. Berkelbach , David R. Reichman , Thomas E. Markland

This paper implements an efficient numerical algorithm for the time-fractional Black-Scholes model governing European options. The proposed method comprises the Crank-Nicolson approach to discretize the time variable and exponential…

计算金融 · 定量金融 2026-02-03 Neetu Garg , A. S. V. Ravi Kanth

This work proposes a deep learning-based emulator for the efficient computation of the coupled viscous Burgers' equation with random initial conditions. In a departure from traditional data-driven deep learning approaches, the proposed…

计算物理 · 物理学 2022-02-24 Xihaier Luo , Yihui Ren , Wei Xu , Shinjae Yoo , Balasubramanya Nadiga , Ahsan Kareem

Differential equations are indispensable to engineering and hence to innovation. In recent years, physics-informed neural networks (PINN) have emerged as a novel method for solving differential equations. PINN method has the advantage of…

计算工程、金融与科学 · 计算机科学 2022-01-07 Mayank Raj , Pramod Kumbhar , Ratna Kumar Annabattula

We introduce a new second-order inertial optimization method for machine learning called INNA. It exploits the geometry of the loss function while only requiring stochastic approximations of the function values and the generalized…

机器学习 · 计算机科学 2021-08-17 Camille Castera , Jérôme Bolte , Cédric Févotte , Edouard Pauwels

In this work, we introduce a machine/deep learning methodology to solve parametric integrals. Besides classical machine learning approaches, we consider a differential learning framework that incorporates derivative information during…

机器学习 · 计算机科学 2025-12-15 Álvaro Leitao , Jonatan Ráfales

In this article, we tackle the math word problem, namely, automatically answering a mathematical problem according to its textual description. Although recent methods have demonstrated their promising results, most of these methods are…

计算与语言 · 计算机科学 2021-09-28 Shifeng Huang , Jiawei Wang , Jiao Xu , Da Cao , Ming Yang

Simulating noninteracting fermion systems is a common task in computational many-body physics. In absence of translational symmetries, modeling free fermions on $N$ modes usually requires poly$(N)$ computational resources. While often…

量子物理 · 物理学 2026-02-24 Maarten Stroeks , Daan Lenterman , Barbara Terhal , Yaroslav Herasymenko

Hybrid neural-physics modeling frameworks through differentiable programming have emerged as powerful tools in scientific machine learning, enabling the integration of known physics with data-driven learning to improve prediction accuracy…

机器学习 · 计算机科学 2025-04-04 Deepak Akhare , Pan Du , Tengfei Luo , Jian-Xun Wang

Fast and accurate solution of time-dependent partial differential equations (PDEs) is of key interest in many research fields including physics, engineering, and biology. Generally, implicit schemes are preferred over the explicit ones for…

Computational imaging has been revolutionized by compressed sensing algorithms, which offer guaranteed uniqueness, convergence, and stability properties. Model-based deep learning methods that combine imaging physics with learned…

计算机视觉与模式识别 · 计算机科学 2023-03-01 Aniket Pramanik , M. Bridget Zimmerman , Mathews Jacob