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Quarterly of Applied Mathematics

Quarterly of Applied Mathematics

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

   
 
 

 

Uniform stability and mean-field limit of a thermodynamic Cucker-Smale model


Authors: Seung-Yeal Ha, Jeongho Kim, Chan Ho Min, Tommaso Ruggeri and Xiongtao Zhang
Journal: Quart. Appl. Math. 77 (2019), 131-176
MSC (2010): Primary 70F99, 92B25
DOI: https://doi.org/10.1090/qam/1517
Published electronically: September 5, 2018
MathSciNet review: 3897922
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Abstract: We present a uniform-in-time stability and uniform mean-field limit of a thermodynamic Cucker-Smale model with small diffusion velocityf (for short, the SDV-TCS model). The original Cucker-Smale model deals with flocking dynamics of mechanical particles, in which the position and momentum are only macroscopic observables. Thus, the original Cucker-Smale model cannot describe some thermodynamic phenomena resulting from the temperature variations among particles and internal variables not taken into account. In [SIAM J. Math. Anal. 50 (2018), pp. 3092–3121] and [Arch. Rational. Mech. Anal. 223 (2017), pp. 1397–1425], a new thermodynamically consistent particle model was proposed from the system of gas mixtures in a rational way. In this paper, we discuss two issues for the SDV-TCS model. First we present a uniform stability of the SDV-TCS model with respect to initial data in the sense that the distance between two solutions is uniformly bounded by that of initial data in a mixed Lebesgue norm. Second, we derive a uniform mean-field limit from the SDV-TCS model to the Vlasov-type kinetic equation for some class of initial data whose empirical measure approximation guarantees exponential flocking in the SDV-TCS model.


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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, Korea Institute for Advanced Study, Hoegiro 85, Seoul, 02455, Republic of Korea
MR Author ID: 684438
Email: syha@snu.ac.kr

Jeongho Kim
Affiliation: Department of Mathematical Sciences, Seoul National University, Seoul 08826, Republic of Korea
MR Author ID: 1253471
Email: jhkim206@snu.ac.kr

Chan Ho Min
Affiliation: Department of Mathematical Sciences, Seoul National University, Seoul 08826, Republic of Korea
Email: chanhomin@snu.ac.kr

Tommaso Ruggeri
Affiliation: Department of Mathematics and Alma Mater Research Center on Applied Mathematics AM$^2$, University of Bologna, Italy
MR Author ID: 151655
ORCID: 0000-0002-7588-2074
Email: tommaso.ruggeri@unibo.it

Xiongtao Zhang
Affiliation: Center for Mathematical Science, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
MR Author ID: 1191666
Email: xtzhang@hust.edu.cn

Received by editor(s): April 25, 2018
Published electronically: September 5, 2018
Additional Notes: The work of the first author was supported by Samsung Science and Technology Foundation under Project Number SSTF-BA1401-0.
The work of the second author was supported by the German Research Foundation (DFG) under project number IRTG 2235.
The work of the fourth author was supported by the National Group of Mathematical Physics GNFM-INdAM and by the University of Bologna: FARB 2012 Project Extended Thermodynamics of Non-Equilibrium Processes from Macro-to-Nano scale.
The work of the last author was supported by the National Natural Science Foundation of China (Grant No. 11801194).
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