Skip to Main Content
Quarterly of Applied Mathematics

Quarterly of Applied Mathematics

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

   
 
 

 

Existence and uniqueness of solutions to the Fermi-Dirac Boltzmann equation for soft potentials


Author: Zongguang Li
Journal: Quart. Appl. Math.
MSC (2020): Primary 35Q20, 35Q40; Secondary 35B20, 35B45
DOI: https://doi.org/10.1090/qam/1681
Published electronically: October 27, 2023
Full-text PDF

Abstract | References | Similar Articles | Additional Information

Abstract: In this paper we consider a modified quantum Boltzmann equation with the quantum effect measured by a continuous parameter $\delta$ that can decrease from $\delta =1$ for the Fermi-Dirac particles to $\delta =0$ for the classical particles. In case of soft potentials, for the corresponding Cauchy problem in the whole space or in the torus, we establish the global existence and uniqueness of non-negative mild solutions in the function space $L^{\infty }_{T}L^{\infty }_{v,x}\cap L^{\infty }_{T}L^{\infty }_{x}L^1_v$ with small defect mass, energy and entropy but allowed to have large amplitude up to the possibly maximum upper bound $F(t,x,v)\leq \frac {1}{\delta }$. The key point is that the obtained estimates are uniform in the quantum parameter $0< \delta \leq 1$.


References [Enhancements On Off] (What's this?)

References

Similar Articles

Retrieve articles in Quarterly of Applied Mathematics with MSC (2020): 35Q20, 35Q40, 35B20, 35B45

Retrieve articles in all journals with MSC (2020): 35Q20, 35Q40, 35B20, 35B45


Additional Information

Zongguang Li
Affiliation: Department of Mathematics, The Chinese University of Hong Kong, Shatin, Hong Kong, People’s Republic of China
MR Author ID: 1257574
Email: zgli@math.cuhk.edu.hk

Keywords: Quantum Boltzmann equation, large amplitude solutions, existence, uniform estimates
Received by editor(s): March 6, 2023
Received by editor(s) in revised form: September 21, 2023
Published electronically: October 27, 2023
Additional Notes: This work was supported by the Hong Kong PhD Fellowship Scheme
Article copyright: © Copyright 2023 Brown University