Results 11 to 20 of about 1,969,022 (331)

Chaos in spin glasses revealed through thermal boundary conditions [PDF]

open access: yes, 2015
We study the fragility of spin glasses to small temperature perturbations numerically using population annealing Monte Carlo. We apply thermal boundary conditions to a three-dimensional Edwards-Anderson Ising spin glass.
Katzgraber, Helmut G.   +2 more
core   +6 more sources

Speed, Trajectory and Increment in the Number of Cells of Singly Flagellated Bacteria Swimming Close to Boundaries

open access: yesJournal of Biomechanical Science and Engineering, 2009
The influence of a rigid boundary and a free boundary on the motion of singly flagellated bacteria is experimentally investigated. The speed of backward swimming cells is faster near the rigid or free boundary than in the free space without boundary.
Tonau NAKAI   +3 more
doaj   +1 more source

The Fisher-KPP nonlocal diffusion equation with free boundary and radial symmetry in $ {\mathbb R}^3 $

open access: yesMathematics in Engineering, 2023
This paper is concerned with the radially symmetric Fisher-KPP nonlocal diffusion equation with free boundary in dimension 3. For arbitrary dimension $ N\geq 2 $, in [18], we have shown that its long-time dynamics is characterised by a spreading ...
Yihong Du , Wenjie Ni
doaj   +1 more source

Regularity results for a quasilinear free boundary problem

open access: yesMathematical Modelling and Analysis, 2020
In this paper we prove local interior and boundary Lipschitz continuity of the solutions of a quasilinear free boundary problem. We also show that the free boundary is the union of graphs of lower semi-continuous functions.
Samia Challal, Abdeslem Lyaghfouri
doaj   +1 more source

Fractional-Spin Integrals of Motion for the Boundary Sine-Gordon Model at the Free Fermion Point [PDF]

open access: yes, 1997
We construct integrals of motion (IM) for the sine-Gordon model with boundary at the free Fermion point which correctly determine the boundary S matrix.
Coleman S.   +4 more
core   +2 more sources

A free boundary problem with a Stefan condition for a ratio-dependent predator-prey model

open access: yesAIMS Mathematics, 2021
In this paper we study a ratio-dependent predator-prey model with a free boundary caused by predator-prey interaction over a one dimensional habitat. We study the long time behaviors of the two species and prove a spreading-vanishing dichotomy; namely ...
Lingyu Liu , Alexander Wires
doaj   +1 more source

Free Boundary Formulation for BVPs on a Semi-Infinite Interval and Non-Iterative Transformation Methods [PDF]

open access: yes, 2014
This paper is concerned with two examples on the application of the free boundary formulation to BVPs on a semi-infinite interval. In both cases we are able to provide the exact solution of both the BVP and its free boundary formulation. Therefore, these
Fazio, Riccardo
core   +1 more source

Propagation and reaction–diffusion models with free boundaries

open access: yesBulletin of Mathematical Sciences, 2022
In this short survey, we describe some recent developments on the modeling of propagation by reaction-differential equations with free boundaries, which involve local as well as nonlocal diffusion.
Yihong Du
doaj   +1 more source

Numerical simulations of Ising spin glasses with free boundary conditions: the role of droplet excitations and domain walls [PDF]

open access: yes, 2016
The relative importance of the contributions of droplet excitations and domain walls on the ordering of short-range Edwards-Anderson spin glasses in three and four dimensions is studied.
Wang, Wenlong
core   +3 more sources

Singular Perturbation Problem in Boundary/Fractional Combustion

open access: yes, 2015
Motivated by a nonlocal free boundary problem, we study uniform properties of solutions to a singular perturbation problem for a boundary-reaction-diffusion equation, where the reaction term is of combustion type.
Petrosyan, Arshak   +2 more
core   +3 more sources

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