The strong path localization conjecture for directed polymers

Let u u be the law of the random environment, and let β\beta denote the inverse temperature. For a polymer measure μβ,n\mu_{\beta,n} on paths of length nn, let (μβ,n)\ell(\mu_{\beta,n}) and ρ(μβ,n)\rho(\mu_{\beta,n}) denote the quenched localization observables defined in the paper. Under suitable conditions on u u, Strong path localization conjecture. There \exists β0\beta_0 such that for every ββ0\beta\geq\beta_0, there \exists δ>0\delta>0 such that

limnP((μβ,n)δ)=limnP(ρ(μβ,n)δ)=1.\lim_{n\to\infty}\mathbb{P}(\ell(\mu_{\beta,n})\geq\delta)=\lim_{n\to\infty}\mathbb{P}(\rho(\mu_{\beta,n})\geq\delta)=1.

This asserts a stronger form of quenched path localization than the main theorem, which gives an upper bound on the probability that the localization observables are small for bounded-support environments satisfying the stated regularity assumptions. The conjecture concerns their asymptotic behavior as the polymer length tends to infinity.

Sources & referencesView supporting material

Primary source

Sourav Chatterjee, “Proof of the path localization conjecture for directed polymers”, arXiv:1806.04220 (2019).

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.