Currently I'm a postdoc in Probability Theory at Tsukuba University, where I am supported by JSPS as an International Research Fellow. I am hosted by David Croydon (Kyoto University) and Ryoki Fukushima (Tsukuba University).
I have written my PhD thesis about "random polymers in disastrous environments" with Nina Gantert at TU Munich. Between November 2019 and October 2020 I was a postdoc at RIMS, Kyoto University.
See here for a short CV.
Research interests I mainly work on the following topics:
More broadly, I'm interested in the following areas:
- The directed polymer model, and first/last passage percolation.
- (Branching) random walks in random environment.
- Stochastic orders, in particular for the above processes.
- Oriented percolation.
- The random conductance model, and the Mott random walk in particular.
- Statistical mechanics.
- Random matrices and integrable probability.
- Large deviation theory.
- Random walks on graphs and their resistane forms.
Paper and preprints
- Directed polymers in the weak disorder phase – Hypercontractivity and new moment bounds. (Download).
- Number of paths in oriented percolation as zero temperature limit of directed polymer, with Ryoki Fukushima. (arXiv).
- Anomalous scaling regime for one-dimensional Mott variable-range hopping, with David Croydon and Ryoki Fukushima. (arXiv, short video summary).
- On large deviation rate functions for a continuous-time directed polymer in weak disorder, with Ryoki Fukushima. Electronic Communications of Probability, 2021(Journal, arXiv).
- Comparison of partition functions in a space-time random environment. Journal of Statistical Physics, 2020. (Journal, arXiv).
- Zero temperature limit for the Brownian directed polymer among Poissonian disasters, with Ryoki Fukushima. Annals of Applied Probability, 2019. (Journal, arXiv)
- A branching random walk among disasters, with Nina Gantert. Electronic Journal of Probability, 2017. (Journal, arXiv)
- On the survival probability of a random walk in random environment with killing. ALEA Latin American Journal of Probability and Mathematical Statistics, 2014. (Journal, arXiv)
Teaching Experience I have been TA for various courses as a PhD student in Munich, see here for a list.
Mail: Institute of Mathematics, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571 Japan.