Hydrodynamics, resurgence, and transasymptotics

G Başar, GV Dunne - Physical Review D, 2015 - APS
The second order hydrodynamical description of a homogeneous conformal plasma that
undergoes a boost-invariant expansion is given by a single nonlinear ordinary differential …

Resurgent extrapolation: rebuilding a function from asymptotic data. Painlevé I

O Costin, GV Dunne - Journal of Physics A: Mathematical and …, 2019 - iopscience.iop.org
Extrapolation is a generic problem in physics and mathematics: how to use asymptotic data
in one parametric regime to learn about the behavior of a function in another parametric …

Uniformization and constructive analytic continuation of Taylor series

O Costin, GV Dunne - Communications in Mathematical Physics, 2022 - Springer
We analyze the problem of global reconstruction of functions as accurately as possible,
based on partial information in the form of a truncated power series at some point, and …

Large-degree asymptotics of rational Painlevé-II functions: noncritical behaviour

RJ Buckingham, PD Miller - Nonlinearity, 2014 - iopscience.iop.org
Rational solutions of the inhomogeneous Painlevé-II equation and of a related coupled
Painlevé-II system have recently arisen in studies of fluid vortices and of the sine-Gordon …

Mode stability of self-similar wave maps in higher dimensions

O Costin, R Donninger, I Glogić - Communications in Mathematical …, 2017 - Springer
Mode Stability of Self-Similar Wave Maps in Higher Dimensions Page 1 Digital Object Identifier
(DOI) 10.1007/s00220-016-2776-7 Commun. Math. Phys. 351, 959–972 (2017) Communications …

Poles of Painlevé IV rationals and their distribution

D Masoero, P Roffelsen - SIGMA. Symmetry, Integrability and Geometry …, 2018 - emis.de
We study the distribution of singularities (poles and zeros) of rational solutions of the
Painlevé IV equation by means of the isomonodromic deformation method. Singularities are …

Noise effects on Padé approximants and conformal maps

O Costin, GV Dunne, M Meynig - Journal of Physics A …, 2022 - iopscience.iop.org
We analyze the properties of Padé and conformal map approximants for functions with
branch points, in the situation where the expansion coefficients are only known with finite …

Divergent Series, Summability and Resurgence I-III

E Delabaere, M Loday-Richaud, C Mitschi… - Lecture Notes in …, 2016 - Springer
We previously showed that the minor ̂w of the unique formal series solution w of the
prepared ODE associated with the first Painlevé equation, defines a function holomorphic on …

Large-degree asymptotics of rational Painlevé-II functions: critical behaviour

RJ Buckingham, PD Miller - Nonlinearity, 2015 - iopscience.iop.org
This paper is a continuation of our analysis, begun in Buckingham and Miller (2014
Nonlinearity 27 2489–577), of the rational solutions of the inhomogeneous Painlevé-II …

On the stability of self-similar solutions to nonlinear wave equations

O Costin, R Donninger, I Glogić, M Huang - … in Mathematical Physics, 2016 - Springer
We consider an explicit self-similar solution to an energy-supercritical Yang-Mills equation
and prove its mode stability. Based on earlier work by one of the authors, we obtain a fully …