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Monte Carlo sampling techniques have been proposed as a strategy to reduce the computational cost of contractions in tensor network approaches to solving many-body systems. Here we put forward a variational Monte Carlo approach for the…

强关联电子 · 物理学 2012-05-01 Andrew J. Ferris , Guifre Vidal

In this article we provide a fast computational method in order to calculate the Moore-Penrose inverse of singular square matrices and of rectangular matrices. The proposed method proves to be much faster and has significantly better…

数值分析 · 数学 2011-02-10 Vasilios N. Katsikis , Dimitrios Pappas , Athanassios Petralias

Quantum Error Correction (QEC) is the cornerstone of practical Fault-Tolerant Quantum Computing (FTQC), but incurs enormous resource overheads. Circuits must decompose into Clifford+T gates, and the non-transversal T gates demand costly…

量子物理 · 物理学 2025-07-15 Archisman Ghosh , Avimita Chatterjee , Swaroop Ghosh

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

We re-examine the nature of the turbulent magnetic diffusivity tensor of mean field electrodynamics and show that an inconsistency arises if it is calculated via consideration of time-independent magnetic fields. Specifically, the predicted…

太阳与恒星天体物理 · 物理学 2010-01-14 David W. Hughes , Michael R. E. Proctor

We study perturbative renormalization of the composite operators in the $T\bar T$-deformed two-dimensional free field theories. The pattern of renormalization for the stress-energy tensor is different in the massive and massless cases.…

高能物理 - 理论 · 物理学 2021-06-07 Anshuman Dey , Mikhail Goykhman , Michael Smolkin

We study the resonant prescribed T-curvature problem on a compact 4-dimensional Riemannian manifold with boundary. We derive sharp energy and gradient estimates of the associated Euler-Lagrange functional to characterize the critical points…

微分几何 · 数学 2021-07-28 Cheikh Birahim Ndiaye

Machine Learning models in real-world applications must continuously learn new tasks to adapt to shifts in the data-generating distribution. Yet, for Continual Learning (CL), models often struggle to balance learning new tasks (plasticity)…

机器学习 · 计算机科学 2025-10-24 Luckeciano C. Melo , Alessandro Abate , Yarin Gal

A transfer matrix scaling technique is developed for randomly diluted systems, and applied to the site-diluted Ising model on a square lattice in two dimensions. For each allowed disorder configuration between two adjacent columns, the…

凝聚态物理 · 物理学 2009-10-22 S. L. A. de Queiroz , R. B. Stinchcombe

Mott's metal-insulator transition at an interface due to band bending is studied by the density matrix renormalization group (DMRG). We show that the result can be recovered by a simple modification of the conventional Poisson's equation…

强关联电子 · 物理学 2009-11-11 Takashi Oka , Naoto Nagaosa

We are concerned with increasing stability in the inverse source problems for the time-dependent Maxwell equations in R^3 , where the source term is compactly supported in both time and spatial variables. By using the Fourier transform,…

偏微分方程分析 · 数学 2024-02-27 Suliang Si

This work extends the results of [Garde and Hyv\"onen, Math. Comp. 91:1925-1953] on series reversion for Calder\'on's problem to the case of realistic electrode measurements, with both the internal admittivity of the investigated body and…

数值分析 · 数学 2023-07-19 Henrik Garde , Nuutti Hyvönen , Topi Kuutela

Bayesian curve fitting plays an important role in inverse problems, and is often addressed using the Reversible Jump Markov Chain Monte Carlo (RJMCMC) algorithm. However, this algorithm can be computationally inefficient without…

统计计算 · 统计学 2024-02-28 Zhiyao Tian , Anthony Lee , Shunhua Zhou

The problem of precise evaluation of perturbative QCD predictions at moderate energies is addressed. In order to improve stability of the predictions with respect to change of the renormalization scheme it is proposed to replace the…

高能物理 - 唯象学 · 物理学 2007-05-23 Piotr A. Raczka

Contrastive learning has achieved remarkable success in self-supervised representation learning, often guided by information-theoretic objectives such as mutual information maximization. Motivated by the limitations of static augmentations…

机器学习 · 计算机科学 2026-03-16 Jiansong Zhang , Zhuoqin Yang , Xu Wu , Xiaoling Luo , Peizhong Liu , Linlin Shen

We study finite-energy blow-ups for prescribed Morse scalar curvatures in both the subcritical and the critical regime. After general considerations on Palais-Smale sequences we determine precise blow up rates for subcritical solutions: in…

偏微分方程分析 · 数学 2020-01-27 Andrea Malchiodi , Martin Mayer

Biological brains learn continually from a stream of unlabeled data, while integrating specialized information from sparsely labeled examples without compromising their ability to generalize. Meanwhile, machine learning methods are…

机器学习 · 计算机科学 2026-01-27 Viet Anh Khoa Tran , Emre Neftci , Willem A. M. Wybo

The letter proposes an adaptive model reduction approach based on tensor decomposition to speed up time-domain power system simulation. Taylor series expansion of a power system dynamic model is calculated around multiple equilibria…

系统与控制 · 计算机科学 2019-04-02 Denis Osipov , Kai Sun

The Penrose tiling (PT) is an intrinsically non-periodic way of tiling the plane, with many remarkable properties. A quantum error-correcting code (QECC) is a clever way of protecting quantum information from noise, by encoding the…

量子物理 · 物理学 2024-01-26 Zhi Li , Latham Boyle

The problem of precise evaluation of the perturbative QCD predictions at moderate energies is considered. Substantial renormalization scheme dependence of the perturbative predictions obtained with the conventional renormalization group…

高能物理 - 唯象学 · 物理学 2007-05-23 Piotr A. Raczka