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We consider a classical spring-mass model of human running which is built upon an inverted elastic pendulum. Based on our previous results concerning asymptotic solutions for large spring constant (or small angle of attack), we construct…

动力系统 · 数学 2021-05-18 Zofia Wróblewska , Piotr Kowalczyk , Łukasz Płociniczak

We introduce a lattice model for a classical doped two dimensional antiferromagnet which has no quenched disorder, yet displays slow dynamics similar to those observed in supercooled liquids. We calculate two-time spatial and spin…

无序系统与神经网络 · 物理学 2009-11-10 Malcolm P. Kennett , Claudio Chamon , Leticia F. Cugliandolo

The nonequilibrium Dyson (or Kadanoff-Baym) equation, which is an equation of motion with long-range memory kernel for real-time Green functions, underlies many numerical approaches based on the Keldysh formalism. In this paper we map the…

强关联电子 · 物理学 2014-02-05 Karsten Balzer , Martin Eckstein

Accurate frictional contact is critical in simulating the assembly of rod-like structures in the practical world, such as knots, hairs, flagella, and more. Due to their high geometric nonlinearity and elasticity, rod-on-rod contact remains…

图形学 · 计算机科学 2024-02-21 Dezhong Tong , Andrew Choi , Jungseock Joo , M. Khalid Jawed

We clarify the relation between the ergodicity breaking transition predicted by mode-coupling theory and the so-called dynamic transition predicted by the static replica approach. Following Franz and Parisi [Phys. Rev. Lett. 79, 2486…

统计力学 · 物理学 2015-05-18 Grzegorz Szamel

We present an asymptotically exact solution of a paradigmatic non-Hermitian model: the disordered interacting fermionic Hatano-Nelson model, or equivalently, the non-Hermitian spin-1/2 XXZ model. We use a renormalization group method suited…

强关联电子 · 物理学 2025-09-23 Valéria M. Mattiello , Victor L. Quito , Eduardo Miranda

We develop the analytic bootstrap in several directions. First, we discuss the appearance of nonperturbative effects in the Lorentzian inversion formula, which are exponentially suppressed at large spin but important at finite spin. We show…

高能物理 - 理论 · 物理学 2019-09-04 Soner Albayrak , David Meltzer , David Poland

We introduce a theoretical approach for designing generalizations of the approximate message passing (AMP) algorithm for compressed sensing which are valid for large observation matrices that are drawn from an invariant random matrix…

信息论 · 计算机科学 2017-05-12 Burak Çakmak , Manfred Opper , Ole Winther , Bernard H. Fleury

Since a long-time, the quantum integrable systems have remained an area where modern mathematical methods have given an access to interesting results in the study of physical systems. The exact computations, both numerical and asymptotic,…

数学物理 · 物理学 2020-12-07 Giridhar V. Kulkarni

An exact solution of the energy shift in each quantum mechanical energy levels in a one dimensional symmetrical linear harmonic oscillator has been investigated. The solution we have used here is firstly derived by manipulating Schrodinger…

量子物理 · 物理学 2007-05-23 Hendry I. Elim

The dynamical response of the Abrikosov vortex lattice in the presence of an oscillating driving field is calculated by constructing an analytical solution of the time-dependent Ginzburg-Landau equation. The solution is steady-state, and…

超导电性 · 物理学 2010-10-29 F. Pei-Jen Lin , Peter Matlock

In this paper we study the exact solution of a one-dimensional model of spin-$\frac{1}{2}$ electrons composed by a nearest-neighbor triplet pairing term and the on-site Hubbard interaction. We argue that this model admits a Bethe ansatz…

数学物理 · 物理学 2020-08-26 M. J. Martins

An exactly solvable lattice model with infinite-range potential is applied to uniaxial ferroelectrics. Asymptotically exact expression for free energy as a function of an order parameter at any temperatures is obtained. Effect of thermal…

材料科学 · 物理学 2011-05-06 A. Yu. Zakharov , M. I. Bichurin , N. V. Evstigneeva

For two prototype systems, we calculate the exact exchange-correlation kernels $f_{\mathrm{xc}}(x,x',\omega)$ of time-dependent density functional theory. $f_{\mathrm{xc}}$, the key quantity for optical absorption spectra of electronic…

其他凝聚态物理 · 物理学 2019-04-10 Mike Entwistle , Rex Godby

Anderson localization on tree-like graphs such as the Bethe lattice, Cayley tree, or random regular graphs has attracted attention due to its apparent mathematical tractability, hypothesized connections to many-body localization, and the…

无序系统与神经网络 · 物理学 2019-09-25 Samuel Savitz , Changnan Peng , Gil Refael

The antiferromagnetic Heisenberg model with easy-axis exchange anisotropy on the Kagome lattice is studied by means of Monte Carlo simulations. From equilibrium properties, we find that the values of the critical exponents associated with…

统计力学 · 物理学 2009-11-07 S. Bekhechi , B. W. Southern

We propose a unified theoretical framework for studying the robustness of the model-X knockoffs framework by investigating the asymptotic false discovery rate (FDR) control of the practically implemented approximate knockoffs procedure.…

机器学习 · 统计学 2025-02-11 Yingying Fan , Lan Gao , Jinchi Lv , Xiaocong Xu

In this paper, we consider the continuous parabolic Anderson model (PAM) driven by a time-independent log-correlated Gaussian field (LGF). We obtain an asymptotic result of $$\mathbb{E}\exp\Bigg\{\frac{1}{2}\sum\limits_{…

概率论 · 数学 2019-10-01 Yangyang Lyu

We show that the asymptotic properties of the link-wise artificial compressibility method are not compatible with a correct approximation of fluid properties. We propose to adapt the previous method through a framework suggested by the…

数值分析 · 数学 2018-03-02 François Dubois , Pierre Lallemand , Christian Obrecht , Mohamed Tekitek

We study valence fluctuations in the extended Anderson model on two-dimensional Penrose lattice, using the real-space dynamical mean-field theory combined with the continuous-time Monte Carlo method. Calculating $f$-electron number, $c$-$f$…

强关联电子 · 物理学 2016-11-03 Ryu Shinzaki , Joji Nasu , Akihisa Koga