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Variational principle for scale-free network motifs [PDF]

open access: yesScientific Reports, 2019
For scale-free networks with degrees following a power law with an exponent τ ∈ (2, 3), the structures of motifs (small subgraphs) are not yet well understood.
Clara Stegehuis   +2 more
doaj   +2 more sources

A Variational Principle for Hardening Elastoplasticity [PDF]

open access: yesSIAM Journal on Mathematical Analysis, 2008
We present a variational principle governing the quasistatic evolution of a linearized elastoplastic material. In case of linear hardening, the novel characterization allows to recover and partly extend some known results and proves itself to be especially well-suited for discussing general approximation and convergence issues.
Ulisse Stefanelli
exaly   +6 more sources

Stochastic Adaptive Single-Site Time-Dependent Variational Principle [PDF]

open access: yesJACS Au, 2022
Yihe Xu   +4 more
doaj   +2 more sources

An efficient quantum algorithm for the time evolution of parameterized circuits [PDF]

open access: yesQuantum, 2021
We introduce a novel hybrid algorithm to simulate the real-time evolution of quantum systems using parameterized quantum circuits. The method, named "projected – Variational Quantum Dynamics" (p-VQD) realizes an iterative, global projection of the exact ...
Stefano Barison   +2 more
doaj   +1 more source

A Variational Principle for a Nonlinear Oscillator Arising in the ‎Microelectromechanical System [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2021
A nonlinear oscillator arising in the microelectromechanical system is complex and it is difficult to obtain a variational principle. This paper begins with a wrong variational formulation and uses the semi-inverse method to obtain a genuine variational ...
Ji-Huan He   +2 more
doaj   +1 more source

$${\mathcal {A}}$$-Variational Principles

open access: yesMilan Journal of Mathematics, 2023
AbstractThough the $${\mathcal {A}}$$ A -quasiconvexity condition has been fully explored since its introduction, no explicit examples of associated variational principles have been considered except in the classical $${\text {curl}}$$ curl -case. Our aim is to propose such a family of
Luís Bandeira, Pablo Pedregal
openaire   +1 more source

Unique extension of the maximum entropy principle to phase coexistence in heat conduction

open access: yesPhysical Review Research, 2022
The maximum entropy principle determines the values of thermodynamic variables in thermally isolated equilibrium systems. This paper extends the principle to a variational principle that applies to liquid–gas coexistence in heat conduction.
Naoko Nakagawa, Shin-ichi Sasa
doaj   +1 more source

On Ekeland’s Variational Principle in Rectangular bmertic Spaces

open access: yesJournal of Harbin University of Science and Technology, 2020
Ekeland′s variational principle plays an important role in fixed point theory. It has applications in many fields such as optimization theory, control theory, critical point theory and others.
HUANG Shuai, CHEN Lili, LIU Xin
doaj   +1 more source

Theory of variational quantum simulation [PDF]

open access: yesQuantum, 2019
The variational method is a versatile tool for classical simulation of a variety of quantum systems. Great efforts have recently been devoted to its extension to quantum computing for efficiently solving static many-body problems and simulating real and ...
Xiao Yuan   +4 more
doaj   +1 more source

Herglotz type conservation laws for nonconservative nonholonomic systems

open access: yesAIP Advances, 2023
The Herglotz variational principle offers an effective method for studying nonconservative system dynamics. The aim of this paper is to study the conservation laws of nonholonomic systems by using the Herglotz type generalized variational principle and ...
Xinchang Dong, Yi Zhang
doaj   +1 more source

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