Research output: Contribution to journal › Article › peer-review
Inverse cascade anomalies in fourth-order Leith models. / Thalabard, Simon; Medvedev, Sergey; Grebenev, Vladimir et al.
In: Journal of Physics A: Mathematical and Theoretical, Vol. 55, No. 1, 015702, 07.01.2022.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Inverse cascade anomalies in fourth-order Leith models
AU - Thalabard, Simon
AU - Medvedev, Sergey
AU - Grebenev, Vladimir
AU - Nazarenko, Sergey
N1 - The authors thank A Mailybaev for useful discussions. ST acknowledges support from the Programa de CapacitacAo Institucional of CNPq and the French-Brazilian network in mathematics. The work of VG was partially supported by the 'chercheurs invites' awards of the Federation Doeblin FR 2800, Universite de la Cote d'Azur, France. The work of SN was supported by the Chaire D'Excellence IDEX (Initiative of Excellence) awarded by Universite de la Cote d'Azur, France, Simons Foundation Collaboration grant Wave Turbulence (Award ID 651471), the European Unions Horizon 2020 research and innovation programme in the framework of Marie Skodowska-Curie HALT project (Grant Agreement No. 823937) and the FET Flagships PhoQuS project (Grant Agreement No. 820392). The work of SM was supported by state funding program FSUS-2020-0034. Publisher Copyright: © 2021 IOP Publishing Ltd.
PY - 2022/1/7
Y1 - 2022/1/7
N2 - We analyze a family of fourth-order non-linear diffusion models corresponding to local approximations of four-wave kinetic equations of weak wave turbulence. We focus on a class of parameters for which a dual cascade behavior is expected with an infrared finite-time singularity associated to inverse transfer of waveaction. This case is relevant for wave turbulence arising in the nonlinear Schrödinger model and for the gravitational waves in the Einstein's vacuum field model. We show that inverse transfer is not described by a scaling of the constant-flux solution but has an anomalous scaling. We compute the anomalous exponents and analyze their origin using the theory of dynamical systems.
AB - We analyze a family of fourth-order non-linear diffusion models corresponding to local approximations of four-wave kinetic equations of weak wave turbulence. We focus on a class of parameters for which a dual cascade behavior is expected with an infrared finite-time singularity associated to inverse transfer of waveaction. This case is relevant for wave turbulence arising in the nonlinear Schrödinger model and for the gravitational waves in the Einstein's vacuum field model. We show that inverse transfer is not described by a scaling of the constant-flux solution but has an anomalous scaling. We compute the anomalous exponents and analyze their origin using the theory of dynamical systems.
KW - anomalous scaling
KW - differential models
KW - inverse cascade
KW - kinetic theory
KW - wave turbulence
UR - http://www.scopus.com/inward/record.url?scp=85122863263&partnerID=8YFLogxK
U2 - 10.1088/1751-8121/ac3858
DO - 10.1088/1751-8121/ac3858
M3 - Article
AN - SCOPUS:85122863263
VL - 55
JO - Journal of Physics A: Mathematical and Theoretical
JF - Journal of Physics A: Mathematical and Theoretical
SN - 1751-8113
IS - 1
M1 - 015702
ER -
ID: 35260664