Search Results - "Dietert, Helge"
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Stability and bifurcation for the Kuramoto model
Published in Journal de mathématiques pures et appliquées (01-04-2016)“…We study the mean-field limit of the Kuramoto model of globally coupled oscillators. By studying the evolution in Fourier space and understanding the domain of…”
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2
Finding the Jump Rate for Fastest Decay in the Goldstein–Taylor Model
Published in Journal of statistical physics (01-07-2022)“…This paper is about the rate of convergence to equilibrium for hypocoercive linear kinetic equations. We look for the spatially dependent jump rate which…”
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3
Well-Posedness of the Prandtl Equations Without Any Structural Assumption
Published in Annals of PDE (01-06-2019)“…We show the local in time well-posedness of the Prandtl equations for data with Gevrey 2 regularity in x and Sobolev regularity in y . The main novelty of our…”
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4
Evolution of dietary diversity and a starvation driven cross-diffusion system as its singular limit
Published in Journal of mathematical biology (01-11-2021)“…We rigorously prove the passage from a Lotka-Volterra reaction-diffusion system towards a cross-diffusion system at the fast reaction limit. The system models…”
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5
The mathematics of asymptotic stability in the Kuramoto model
Published in Proceedings of the Royal Society. A, Mathematical, physical, and engineering sciences (01-12-2018)“…Now a standard in Nonlinear Sciences, the Kuramoto model is the perfect example of the transition to synchrony in heterogeneous systems of coupled oscillators…”
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6
Stability and Cascades for the Kolmogorov–Zakharov Spectrum of Wave Turbulence
Published in Archive for rational mechanics and analysis (01-02-2024)“…We consider the kinetic wave equation arising in wave turbulence to describe the Fourier spectrum of solutions to the cubic Schrödinger equation. This equation…”
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7
The mathematics of asymptotic stability in the Kuramoto model
Published in Proceedings of the Royal Society. A, Mathematical, physical, and engineering sciences (01-12-2018)“…Now a standard in Nonlinear Sciences, the Kuramoto model is the perfect example of the transition to synchrony in heterogeneous systems of coupled oscillators…”
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8
Characterisation of gradient flows on finite state Markov chains
Published in Electronic communications in probability (2015)Get full text
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9
Study of a class of triangular starvation driven cross-diffusion systems
Published in Ricerche di matematica (18-10-2024)“…Abstract We study the existence, regularity and uniqueness for a general class of triangular reaction-cross-diffusion systems coming from the study of…”
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10
An invariant class of wave packets for the Wigner transform
Published in Journal of mathematical analysis and applications (15-06-2017)“…Generalised Hagedorn wave packets appear as exact solutions of Schrödinger equations with quadratic, possibly complex, potential, and are given by a polynomial…”
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11
Landau Damping to Partially Locked States in the Kuramoto Model
Published in Communications on pure and applied mathematics (01-05-2018)“…In the Kuramoto model of globally coupled oscillators, partially locked states (PLS) are stationary solutions that capture the emergence of partial synchrony…”
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12
Well-posedness of the Prandtl equation without any structural assumption
Published in Annals of PDE (19-03-2019)“…We show the local in time well-posedness of the Prandtl equation for data with Gevrey $2$ regularity in $x$ and $H^1$ regularity in $y$. The main novelty of…”
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13
Orientation Mixing in Active Suspensions
Published in Annals of PDE (01-12-2023)“…We study a popular kinetic model introduced by Saintillan and Shelley for the dynamics of suspensions of active elongated particles where the particles are…”
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14
L$^2$-Hypocoercivity for non-equilibrium kinetic equations
Published 20-10-2023“…The recent work [11] developed a general framework to show hypocoercivity for a stationary Gibbs state and allowed spatial degeneracy, confining potentials and…”
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15
Markov models for ocular fixation locations in the presence and absence of colour
Published in Journal of the Royal Statistical Society Series C: Applied Statistics (01-01-2018)“…In response to the 2015 Royal Statistical Society's statistical analytics challenge, we propose to model the fixation locations of the human eye when observing…”
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16
Regularity for rough hypoelliptic equations
Published 16-09-2022“…We present a general approach to obtain a weak Harnack inequality for rough hypoellipitic equations, e.g. kinetic equations. The proof is constructive and does…”
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17
Finding the jump rate for fastest decay in the Goldstein-Taylor model
Published 09-04-2021“…For hypocoercive linear kinetic equations we first formulate an optimisation problem on a spatially dependent jump rate in order to find the fastest decay rate…”
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18
Study of a class of triangular starvation driven cross-diffusion systems
Published 24-05-2024“…We study the existence, regularity and uniqueness for a general class of triangular reaction-cross-diffusion systems coming from the study of starvation driven…”
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19
Persisting entropy structure for nonlocal cross-diffusion systems
Published 08-01-2021“…For cross-diffusion systems possessing an entropy (i.e. a Lyapunov functional)we study nonlocal versions and exhibit sufficient conditions to ensure that…”
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20
Stability of partially locked states in the Kuramoto model through Landau damping with Sobolev regularity
Published 11-07-2017“…The Kuramoto model is a mean-field model for the synchronisation behaviour of oscillators, which exhibits Landau damping. In a recent work, the nonlinear…”
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