Research

I study how living systems generate predictable large-scale order. Each project below has a short overview — click a title to read it.

Competition at the front of expanding populations
Sergio Eraso, Mehran Kardar

Stochastic surface-growth models that explain superdiffusive scaling in bacterial range expansions, linking population fronts to KPZ universality and Tracy–Widom statistics.

Under review (2026)
Overview Paper ↗
BibTeX 
@article{eraso_expanding_populations,
  title  = {Competition at the front of expanding populations},
  author = {Eraso, Sergio and Kardar, Mehran},
  journal = {Under review},
  year   = {2026}
}
Branching Networks in Biology
Sergio Eraso, Mehran Kardar

Master-equation and Monte Carlo models of stochastic filament growth, identifying universality classes of branch-length distributions set by microscopic rates.

In preparation (2026)
Overview
BibTeX 
@article{eraso_branching_networks,
  title  = {Universality classes of branch-length distributions in stochastic biological networks},
  author = {Eraso, Sergio and Kardar, Mehran},
  journal = {In preparation},
  year   = {2026}
}
Active Matter Near Boundaries
Sergio Eraso, Ori Yehezkel, Yariv Kafri, Mehran Kardar

Fokker–Planck and hydrodynamic theory for self-propelled particles in confinement, predicting boundary-controlled density and current patterns.

In preparation (2026)
Overview Poster ↗
BibTeX 
@article{eraso_active_matter_boundaries,
  title  = {Scale-free density and current modulations in a wedge-confined active gas},
  author = {Eraso, Sergio and Yehezkel, Ori and Kafri, Yariv and Kardar, Mehran},
  journal = {In preparation},
  year   = {2026}
}
Immune-System Resource Allocation
Andriy Goychuk, David Goh, Sergio Eraso, Ruslan Medzhitov, Arup K. Chakraborty

A systems-level PDE model coupling immune dynamics to tissue-level resources, showing how cytokine-regulated redistribution controls pathogen clearance.

Under review (2025)
Overview Paper ↗
BibTeX 
@article{eraso_immune_resource_allocation,
  title  = {Interplay between the immune response and the adaptation of metabolic pathways upon infection},
  author = {Goychuk, Adriy and Goh, David and Eraso, Sergio and Medzhitov, Ruslan, and Chakraborty, Arup K.},
  journal = {Under review},
  year   = {2025}
}
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