Scientific Calendar Event



Description
Recent analytical developments to describe diffusive processes in discrete space and time have opened up opportunities to study interaction processes that are generally hard to get to within a continuous space-time description. I will describe some of these advances focusing on first-passage dynamics in the presence of multiple reactive or partially reactive targets and with multiple inert heterogeneities (spatial disorder). I will also show a generalization of the formalism to when the movement statistics is correlated, that is for the one-step non-Markov lattice random walk, and its application to a foraging experiment on ants.
 
References
[1] L. Giuggioli, Exact spatio-temporal dynamics of confined lattice random walks in arbitrary dimensions: a century after Smoluchowski and Pólya, Physical Review X 10(2):021045 (2020).
[2] S. Sarvaharman and L. Giuggioli, Closed-form solutions to the dynamics of confined biased lattice random walks in arbitrary dimensions, Physical Review E 102(6):062124 (2020).
[3] L. Giuggioli and S. Sarvaharman, Spatio-temporal dynamics of random transmission events: from information sharing to epidemic spread, Journal of Physics A: Mathematical and Theoretical 55(37):375005 (2022).
[4] T. Kay and L. Giuggioli, Diffusion through permeable interfaces: Fundamental equations and their application to first-passage and local time statistics, Physical Review Research 4(3):L032039 (2022).
[5] D. Das and L. Giuggioli, Discrete space-time resetting model: application to first-passage and transmission statistics, Journal of Physics A: Mathematical and Theoretical 55 (42):424004 (2022).
[6] D. Das and L. Giuggioli, Dynamics of lattice random walk within regions composed of different media and interfaces, Journal of Statistical Mechanics: Theory and Experiment 1:013201 (2023).
[7] D. Marris, S. Sarvaharman and L. Giuggioli, Exact spatio-temporal dynamics of lattice random walks in hexagonal and honeycomb domains, Physical Review E 107(5):054139 (2023).
[8] S. Sarvaharman and L. Giuggioli, Particle-environment interactions in arbitrary dimensions: a unifying analytic framework to model diffusion with inert spatial heterogeneities, Physical Review Research 5(4):043281 (2023).
[9] D. Marris, L. Giuggioli, Persistent and anti-persistent motion in bounded and unbounded space: resolution of the first-passage problem. New Journal of Physics 26:073020 (2024).
[10] L. Giuggioli, S. Sarvaharman, D. Das, D. Marris and T. Kay, Multi-target search in bounded and heterogeneous environments: a lattice random walk perspective, preprint to appear in 'Target Search Problems' book (2024), arXiv preprint arXiv:2311.00464
 
 
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