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Francesco Coghi

VITA


I’m a Leverhulme Early Career Research Fellow at the University of Nottingham (UK), in the Condensed Matter Theory group led by Juan P. Garrahan.

Research: I develop theory and tools to understand—and exploit—fluctuations and rare events in self-interacting stochastic systems. My goal is to turn rare events into a resource for learning and control, designing reinforcement-learning strategies that are bolstered by `extremes' rather than hindered by them.

Previously, I was a postdoctoral researcher in the same group at the University of Nottingham, and before that a postdoctoral fellow at Nordita (Stockholm) in the group led by John S. Wettlaufer. I received my PhD in October 2021 from Queen Mary University of London, working on large deviations with Rosemary J. Harris.

I’m fascinated by random systems and structures—especially how noise and chaos can lead into rare, ordered patterns. Lately, my work probes the interplay of stochasticity, memory, and reinforcement, with the aim of turning rare events into usable signal for learning and control.

Here are a few keywords related to my research and extra-academic interests:

Hobbies

I like bikepacking, swimming, kneading, crime board games, reading and spending time with friends.

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RESEARCH


Publications

Jump processes with self-interactions: large deviation asymptotics

arXiv:2510.14659

Accelerated first-passage dynamics in a non-Markovian feedback Ornstein–Uhlenbeck process

J. Stat. Phys. 192, 128 (2025)

Self-interacting processes via Doob conditioning

J. Stat. Mech. Theory Exp. (2025) 103202

Density-dependent stochastic resetting: a large deviations framework for achieving target distributions over networks

J. Stat. Mech. Theory Exp. (2025) 063203

Current fluctuations of a self-interacting diffusion on a ring

J. Phys. A: Math. Theor. 58 015002

Generalised Landauer bound from absolute irreversibility

Phys. Rev. E 109 (2024) 024138

Understanding random-walk dynamical phase coexistence through waiting times

Phys. Rev. Research 6, 013077 (2024)

Thermodynamic cost for precision of general counting observables

Phys. Rev. E 109, 064128 (2024)

Dynamical fluctuations in a minimal model of higher-order networks

Phys. Rev. Lett. 133, 107401 (2024)

Convergence of the Integral Fluctuation Theorem estimator for nonequilibrium Markov systems

J. Stat. Mech. Theory Exp. (2023) 063201

Adaptive power method for estimating large deviations of Markov chains

Phys. Rev. E 107 (2023) 034137

Delocalisation-localisation dynamical phase transition of random walks on graphs

Phys. Rev. E 107 (2023) 024126

Maximal dispersion of adaptive random walks

Phys. Rev. Res. 4, L042051 (2022)

Graph-combinatorial approach for large deviations of Markov chains

J. Phys. A Math. Theor. 55 295001 (2022)

Role of current fluctuations in nonreversible samplers

Phys. Rev. E 103 (2021): 062142

A large deviation perspective on ratio observables in reset processes: robustness of rate functions

J. Stat. Phys. 179, 131–154 (2020)

Large deviations of random walks on random graphs

Phys. Rev. E 99.2 (2019): 022137

Controlling the uncertain response of real multiplex networks to random damage

Phys. Rev. E 98.6 (2018): 062317

PhD Thesis

Large deviation methods for the study of nonequilibrium systems: variational and spectral approaches.

September 2021

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TEACHING


Teaching

Iceland University
Lecturer (fixed term) for the module Statistical Physics of the Master's course Advanced Topics in Classical Physics.
Autumn 2023
Queen Mary University of London
Teaching assistant of various modules such as Dynamical Systems, Calculus 2, Programming with Python, etc...
2018-2020

Mentoring

Nordita (Stockholm)
Supervisor of Romain Duvezin’s Internship between ENS Paris and Nordita. Title: Revisiting escape times for self-interacting diffusion processes.
Spring 2024
Nordita (Stockholm)
First supervisor of David Stuhrmann’s Master Thesis in Computational Physics. Title: Adaptive random walks on graphs to sample rare events.
Autumn 2022 - Summer 2023
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Honours & Funding


Leverhulme Early Career Fellowship

3-year research funding.

May 2025
Seal of Excellence MSCA (Horizon Europe)

High-quality project proposal (94.6%) in a highly competitive evaluation process

Feb 2025
Blanceflor Scholarship

Awarded with SEK 50000 from the Blanceflor Foundation in support of research work.

Apr 2024
Nordita Workshop Funding

Awarded with SEK 80000 for the organisation of the workshop on ‘Fluctuations and First-Passage Time Problems’ held at Nordita.

Dec 2022
Eileen Colyer Prize

Awarded with £1000 from the School of Mathematical Sciences at QMUL, towards the forthcoming trip to the University of Stellenbosch, SA.

Dec 2019
Queen Mary Postgraduate Research Fund

Awarded with £1000 from Queen Mary University of London, towards the forthcoming trip to the University of Stellenbosch, SA.

Nov 2019
IMA Small Grant 2019

Awarded with £500 from the Institute of Mathematics and its Applications, for the forthcoming trip to the Laboratoire J. A. Dieudonné in Nice, FR.

Jun 2019
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NEWS


May 2025

Awarded Leverhulme Early Career Fellowship

Project: Rare event-driven learning: from chemotaxis to reinforcement strategies. (3 years research funding)

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CONTACT


School of Physics and Astronomy

The University of Nottingham

Office C7b

Nottingham NG7 2RD

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francesco[dot]coghi[at]nottingham[dot]ac[dot]uk

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