Results 41 to 50 of about 428,778 (188)

Phase structure of NJL model with weak renormalization group [PDF]

open access: yes, 2018
We analyze the chiral phase structure of the Nambu--Jona-Lasinio model at finite temperature and density by using the functional renormalization group (FRG).
Aoki, Ken-Ichi   +2 more
core   +3 more sources

Stochastic functional differential equations driven by L\'{e}vy processes and quasi-linear partial integro-differential equations

open access: yes, 2012
In this article we study a class of stochastic functional differential equations driven by L\'{e}vy processes (in particular, $\alpha$-stable processes), and obtain the existence and uniqueness of Markov solutions in small time intervals.
Zhang, Xicheng
core   +1 more source

Coarse-grained forms for equations describing the microscopic motion of particles in a fluid

open access: yes, 2013
Equations of motion for the microscopic number density $\hat{\rho}({\bf x},t)$ and the momentum density $\hat{\bf g}({\bf x},t)$ of a fluid have been obtained in the past from the corresponding Langevin equations representing the dynamics of the fluid ...
Das, Shankar P., Yoshimori, Akira
core   +1 more source

Asymptotic behavior of solutions of a partial functional differential equation

open access: yesElectronic Journal of Differential Equations, 2000
The asymptotic behavior of solutions of an asymptotically autonomous partial functional differential equation is investigated. The aim of the present paper is to extend our earlier result for ordinary functional differential equations and difference ...
Gyula Farkas
doaj  

A Two-Dimensional Nonlocal Fractional Parabolic Initial Boundary Value Problem

open access: yesAxioms
In this paper, we investigate a two-dimensional singular fractional-order parabolic partial differential equation in the Caputo sense. The partial differential equation is supplemented with Dirichlet and weighted integral boundary conditions.
Said Mesloub   +2 more
doaj   +1 more source

Lie Symmetry Analysis of the Black-Scholes-Merton Model for European Options with Stochastic Volatility

open access: yes, 2016
We perform a classification of the Lie point symmetries for the Black--Scholes--Merton Model for European options with stochastic volatility, $\sigma$, in which the last is defined by a stochastic differential equation with an Orstein--Uhlenbeck term. In
Krishnakumar, K.   +3 more
core   +2 more sources

Application of Conformable Sumudu Decomposition Method for Solving Conformable Fractional Coupled Burger’s Equation

open access: yesJournal of Function Spaces, 2021
The conformable double Sumudu decomposition method (CDSDM) is a combination of decomposition method (DM) and a conformable double Sumudu transform.
Hassan Eltayeb, Said Mesloub
doaj   +1 more source

Stability of functional partial differential equations

open access: yesJournal of Differential Equations, 1985
The authors consider the asymptotic stability of the class of linear functional partial differential equations of the form \[ \frac{dx}{dt}=Ax(t)+ax(t)+\sum^{m}_{i=1}b_ i\int^{\infty}_{0}x(t-s)d\mu_ i(s). \] Necessary and sufficient conditions are given for the roots of the associated characteristic equation to have negative real parts for all measures
Lenhart, Suzanne M, Travis, Curtis C
openaire   +2 more sources

A new representation for the partition function of the six vertex model with domain wall boundaries

open access: yes, 2010
We obtain a new representation for the partition function of the six vertex model with domain wall boundaries using a functional equation recently derived by the author.
Baxter R J   +13 more
core   +1 more source

A Massera type criterion for a partial neutral functional differential equation

open access: yesElectronic Journal of Differential Equations, 2002
We prove the existence of periodic solutions for partial neutral functional differential equations with delay, using a Massera type criterion.
Eduardo Hernandez M.
doaj  

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