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We investigate dissipative extensions of the Su-Schrieffer-Heeger model with regard to different approaches of modeling dissipation. In doing so, we use two distinct frameworks to describe the gain and loss of particles, one uses Lindblad…

量子物理 · 物理学 2018-10-02 Felix Dangel , Marcel Wagner , Holger Cartarius , Jörg Main , Günter Wunner

A direct reformulation of the Hamiltonian formalism in terms of the intrinsic geometry of infinitely prolonged differential equations is obtained. Concepts of spatial equation and spatial-gauge symmetry of a Lagrangian system of equations…

数学物理 · 物理学 2024-11-22 Kostya Druzhkov

This work concerns about forward-backward multivalued stochastic systems. First of all, we prove one average principle for general stochastic differential equations in the $L^{2p}$ ($p\geq 1$) sense. Moreover, for $p=1$ a convergence rate…

概率论 · 数学 2023-11-14 Huijie Qiao

The new class of Markov processes is proposed to realize the flexible shrinkage effects for the dynamic models. The transition density of the new process consists of two penalty functions, similarly to Bayesian fused LASSO in its functional…

统计方法学 · 统计学 2020-10-16 Kaoru Irie

We suggest an extension of the Hilbert Phase Space formalism, which appears to be naturally suited for application to the dissipative (open) quantum systems, such as those described by the non-stationary (time-dependent) Hamiltonians…

量子物理 · 物理学 2017-03-14 Tigran Aivazian

This paper defines antifragility for dynamical systems as convexity of a newly introduced "logarithmic rate". It shows how to compute this rate for positive linear systems, and it interprets antifragility in terms of pulsed alternations of…

动力系统 · 数学 2024-11-12 Eduardo D. Sontag

We derive dissipative effective Hamiltonian for the unstable Lee model without any ad hoc coarse graining procedure. Generalized radiative corrections, utilizing the in-in formalism of quantum field theory, automatically yield…

量子物理 · 物理学 2007-05-23 Masahiro Morikawa

Disentanglement via mechanism sparsity was introduced recently as a principled approach to extract latent factors without supervision when the causal graph relating them in time is sparse, and/or when actions are observed and affect them…

机器学习 · 统计学 2022-07-19 Sébastien Lachapelle , Simon Lacoste-Julien

The asymptotic behavior for fully coupled multiscale stochastic systems becomes much complicated when the fast processes do not locate in a compact space. An example is constructed to show that the averaged coefficients may become…

概率论 · 数学 2025-09-23 Shen Wang , Jinghai Shao

We extend Hamilton-Jacobi theory to Lagrange-Dirac (or implicit Lagrangian) systems, a generalized formulation of Lagrangian mechanics that can incorporate degenerate Lagrangians as well as holonomic and nonholonomic constraints. We refer…

数学物理 · 物理学 2012-09-13 Melvin Leok , Tomoki Ohsawa , Diana Sosa

We introduce a novel solution concept, denoted $\alpha$-dissipative solutions, that provides a continuous interpolation between conservative and dissipative solutions of the Cauchy problem for the two-component Camassa-Holm system on the…

偏微分方程分析 · 数学 2022-01-17 Katrin Grunert , Helge Holden , Xavier Raynaud

Landau damping is the tendency of solutions to the Vlasov equation towards spatially homogeneous distribution functions. The distribution functions however approach the spatially homogeneous manifold only weakly, and Boltzmann entropy is…

流体动力学 · 物理学 2017-11-29 Michal Pavelka , Vaclav Klika , Miroslav Grmela

A new version of classical S-procedure in system theory is proposed based on duality in the space of positive definite matrices and introduction of matrix Lagrange multipliers. A new proof and extension of the recent results of T.Iwasaki,…

最优化与控制 · 数学 2007-05-23 Alexander L. Fradkov

Two improvements with respect to previous formulations are presented for the calculation of the partition function $\mathcal{Z}$ of small, isolated and interacting many body systems. By including anharmonicities and employing a variational…

核理论 · 物理学 2007-05-23 Christian Rummel , Helmut Hofmann

Inspired by Gromov's partial differential relations, we introduce a notion of differential transmutation, which allows to transfer some local properties of solutions of a PDE to solutions of another PDE, in particular local solvability,…

偏微分方程分析 · 数学 2024-01-09 Franck Sueur

A Lie system is a system of differential equations admitting a superposition rule, i.e., a function describing its general solution in terms of any generic set of particular solutions and some constants. Following ideas going back to the…

数学物理 · 物理学 2015-03-03 J. F. Cariñena , J. Grabowski , J. de Lucas , C. Sardón

The Liouville theorem is a fundamental concept in understanding the properties of systems that adhere to Hamilton's equations. However, the traditional notion of the theorem may not always apply. Specifically, when the entropy gradient in…

综合物理 · 物理学 2023-03-29 Mario J. Pinheiro

In contrast to the symmetries of translation in space, rotation in space, and translation in time, the known laws of physics are not universally invariant under transformation of scale. However, the action can be invariant under change of…

数据分析、统计与概率 · 物理学 2019-11-05 Erik D. Fagerholm , W. M. C. Foulkes , Yasir Gallero-Salas , Fritjof Helmchen , Karl J. Friston , Rosalyn J. Moran , Robert Leech

In this paper, we study equality-type Clarke subdifferential chain rules of matrix factorization and factorization machine. Specifically, we show for these problems that provided the latent dimension is larger than some multiple of the…

最优化与控制 · 数学 2024-10-08 Jiewen Guan , Anthony Man-Cho So

While compactness is an essential assumption for many results in dynamical systems theory, for many applications the state space is only locally compact. Here we provide a general theory for compactifying such systems, i.e. embedding them…

动力系统 · 数学 2010-04-05 Ethan Akin , Joseph Auslander
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