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Quarterly of Applied Mathematics

Quarterly of Applied Mathematics

Online ISSN 1552-4485; Print ISSN 0033-569X

   
 
 

 

Two-point correlation function and its applications to the Schrödinger-Lohe type models


Authors: Seung-Yeal Ha, Gyuyoung Hwang and Dohyun Kim
Journal: Quart. Appl. Math. 80 (2022), 669-699
MSC (2020): Primary 34C15; Secondary 34D06, 35Q55
DOI: https://doi.org/10.1090/qam/1623
Published electronically: May 10, 2022
MathSciNet review: 4489001
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Abstract: We study the asymptotic emergent dynamics and the continuum limit for the Schrödinger-Lohe (SL) model and semi-discrete SL model. For the SL model, emergent dynamics has been mostly studied for systems with identical potentials in literature. In this paper, we further extend emergent dynamics and stability estimate for the SL model with nonidentical potentials. To achieve this, we use two-point correlation functions defined as an inner product between wave functions. For the semi-discrete SL model, we provide a global unique solvability and a sufficient framework for the smooth transition from the semi-discrete SL model to the SL model in any finite-time interval, as the mesh size tends to zero. Our convergence estimate depends on the uniform-in-$h$ Strichartz estimate and the uniform-stability of the SL models with respect to initial data.


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Additional Information

Seung-Yeal Ha
Affiliation: Department of Mathematical Sciences and Research Institute of Mathematics, Seoul National University, Seoul 08826, Republic of Korea
MR Author ID: 684438
Email: syha@snu.ac.kr

Gyuyoung Hwang
Affiliation: Department of Mathematical Sciences, Seoul National University, Seoul 08826, Republic of Korea
MR Author ID: 1455927
Email: hgy0407@snu.ac.kr

Dohyun Kim
Affiliation: School of Mathematics, Statistics and Data Science, Sungshin Women’s University, Seoul 02844, Republic of Korea
MR Author ID: 858181
Email: dohyunkim@sungshin.ac.kr

Keywords: Continuum limit, global existence, quantum synchronization, Schrödinger-Lohe model, Strichartz estimates on lattice, uniform stability
Received by editor(s): March 15, 2022
Received by editor(s) in revised form: April 8, 2022
Published electronically: May 10, 2022
Additional Notes: The work of the first author is supported by National Research Foundation of Korea (NRF-2020R1A2C3A01003881). The work of the last author was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No.2021R1F1A1055929).
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