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arXiv · 1910.09892

Combined mean-field and semiclassical limits of large fermionic systems

Li Chen·Jinyeop Lee·Matthew Liew
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Abstract

We study the time dependent Schr\"odinger equation for large spinless fermions with the semiclassical scale $\hbar = N^{-1/3}$ in three dimensions. By using the Husimi measure defined by coherent states, we rewrite the Schr\"odinger equation into a BBGKY type of hierarchy for the k particle Husimi measure. Further estimates are derived to obtain the weak compactness of the Husimi measure, and in addition uniform estimates for the remainder terms in the hierarchy are derived in order to show that in the semiclassical regime the weak limit of the Husimi measure is exactly the solution of the Vlasov equation.

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Li Chen, Jinyeop Lee, Matthew Liew. 2019-10-22. Combined mean-field and semiclassical limits of large fermionic systems. https://doi.org/10.1007/s10955-021-02700-w

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