Equality of particle-system and mean-field log-Sobolev constants

About 5 years old · traced to

Let λLS⁡N\lambda^N_{\operatorname{LS}} denote the log-Sobolev constant of the NN-particle system, and let λLS⁡∞\lambda^\infty_{\operatorname{LS}} denote the corresponding mean-field constant. Assume that the hypotheses A1 and A2 hold.

Log-Sobolev constant limit conjecture. Under assumptions A1 and A2,

lim⁡N→∞λLS⁡N=λLS⁡∞.\lim_{N\to\infty}\lambda^N_{\operatorname{LS}}=\lambda^\infty_{\operatorname{LS}}.

This conjecture would complete the characterisation of the limiting log-Sobolev constant in terms of the mean-field system. The paper gives evidence through degeneracy and contraction results, but states that the full characterisation remains unresolved.

References

Primary source

Matías G. Delgadino, Rishabh S. Gvalani, Grigorios A. Pavliotis and Scott A. Smith, “Phase transitions, logarithmic Sobolev inequalities, and uniform-in-time propagation of chaos for weakly interacting diffusions”, arXiv:2112.06304 (2021).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.