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A novel method of exponentially stable adaptive control to compensate for matched parametric uncertainty under a mild condition of semi-persistent excitation (s-PE) of a regressor with piecewise-constant rank and nullspace is proposed. It…

系统与控制 · 电气工程与系统科学 2022-10-24 Anton Glushchenko , Konstantin Lastochkin

We examine several zero-range potentials in non-relativistic quantum mechanics. The study of such potentials requires regularization and renormalization. We contrast physical results obtained using dimensional regularization and cutoff…

高能物理 - 理论 · 物理学 2009-10-30 Daniel R. Phillips , Silas R. Beane , Thomas D. Cohen

In this letter we introduce the non-linear partial differential equation (PDE) $\partial^2_{\tau} \pi \propto (\vec\nabla \pi)^2$ showing a new type of instability. Such equations appear in the effective field theory (EFT) of dark energy…

宇宙学与河外天体物理 · 物理学 2023-05-23 Farbod Hassani , Pan Shi , Julian Adamek , Martin Kunz , Peter Wittwer

We examine the effect of a threshold bias on the power spectrum and the bispectrum in an ensemble of numerical simulations (Gaussian initial perturbations with power law spectra P(k) \sim k^n, n=+1, 0, -1, -2) and compare our results with…

天体物理学 · 物理学 2015-06-24 J. N. Fry , Adrian L. Melott , Sergei F. Shandarin

A model-independent parameterization of the low-energy scattering amplitude that incorporates the left-hand cut from one-particle exchange, an extension of the conventional effective-range expansion (ERE), was recently proposed and…

高能物理 - 唯象学 · 物理学 2026-01-09 Wen-Jia Wang , Bing Wu , Meng-Lin Du , Feng-Kun Guo

We study the power spectrum of dark matter density fluctuations in the framework of the Effective Field Theory of Large Scale Structures (EFTofLSS) up to three loop orders. In principle, several counter-terms may be needed to handle the…

宇宙学与河外天体物理 · 物理学 2020-02-04 Thomas Konstandin , Rafael A. Porto , Henrique Rubira

New solutions to the non perturbative renormalization group equation for the effective action of a scalar field theory in the Local Potential Approximation having the exponential form $e^{\pm\phi}$ are found. This result could be relevant…

高能物理 - 唯象学 · 物理学 2009-10-31 Vincenzo Branchina

Cutoff regularized subleading order ${}^1S_0$ NN potential of effective field theory (EFT) is iterated using Lippmann-Schwinger equation. It is shown that the scattering amplitudes calculated in cutoff and subtractively renormalized EFT are…

核理论 · 物理学 2009-11-07 J. Gegelia , G. Japaridze

Effective Field Theory (EFT) is an efficient method for parametrizing unknown high energy physics effects on low energy data. When applied to time-dependent backgrounds, EFT must be supplemented with initial conditions. In these…

高能物理 - 理论 · 物理学 2007-05-23 M. Porrati

Attempts to apply effective field theory (EFT) methods to nonrelativistic nucleon-nucleon (NN) scattering have raised questions about the nature and limitations of an EFT expansion when used nonperturbatively. We discuss the characteristics…

核理论 · 物理学 2009-10-31 James V. Steele , R. J. Furnstahl

This paper focuses on wireless energy transfer (WET) to a pair of low complex energy receivers (ER), by only utilizing received signal strength indicator (RSSI) values that are fed back from the ERs to the energy transmitter (ET). Selecting…

信息论 · 计算机科学 2018-03-13 Chanaka Singhabahu , Tharaka Samarasinghe , Samith Abeywickrama , Chau Yuen

Previous works have shown numerically that the response of a ``stochastic resonator'' is enhanced as a consequence of spatial coupling. Also, similar results have been obtained in a reaction-diffusion model by studying the phenomenon of…

统计力学 · 物理学 2009-11-07 H. S. Wio , S. Bouzat , B. von Haeften

Continuing our effort to build a consistent power counting for chiral nuclear effective field theory (EFT), we discuss the subleading contact interactions, or counterterms, in the singlet channels of nucleon-nucleon scattering, with…

核理论 · 物理学 2013-04-30 Bingwei Long , C. -J. Yang

We review the effective field theories (EFTs) developed for few-nucleon systems. These EFTs are controlled expansions in momenta, where certain (leading-order) interactions are summed to all orders. At low energies, an EFT with only contact…

核理论 · 物理学 2009-11-07 P. F. Bedaque , U. van Kolck

This article reviews unitarization methods essential for extending Effective Field Theories (EFTs) beyond their perturbative limits, particularly in hadronic and electroweak (EW) sectors. Perturbative EFTs, like Chiral Perturbation Theory…

高能物理 - 唯象学 · 物理学 2026-03-04 Alexandre Salas-Bernárdez

A method to quantitatively assess the consistency of power-counting proposals in Effective Field Theories (EFT) which are non-perturbative at leading order is presented. The Renormalisation Group evolution of an observable predicts the…

核理论 · 物理学 2020-05-20 Harald W. Griesshammer

In this article, we construct empirical likelihood (EL)-weighted estimators of linear functionals of a probability measure in the presence of side information. Motivated by nuisance parameters in semiparametric models with possibly infinite…

统计理论 · 数学 2023-01-25 Shan Wang , Hanxiang Peng

We study constraints on the effective field theory (EFT) from the relative entropy between two theories: we refer to these as target and reference theories. The consequence of the non-negativity of the relative entropy is investigated by…

高能物理 - 理论 · 物理学 2023-08-02 Qing-Hong Cao , Naoto Kan , Daiki Ueda

Asymptotic expansions are presented for the moments of bound states in one-dimensional anharmonic potentials. The results are derived by using the SAFE method and include only the first non-zero wave-related correction to the familiar…

量子物理 · 物理学 2023-05-31 G. W. Forbes , Miguel A. Alonso

We focus on the random generation of SAT instances that have properties similar to real-world instances. It is known that many industrial instances, even with a great number of variables, can be solved by a clever solver in a reasonable…

计算复杂性 · 计算机科学 2023-03-14 Carlos Ansótegui , Maria Luisa Bonet , Jordi Levy