Soham Chandaসোহম চন্দ

Field

Symplectic and Contact Topology

Institution

University of Southern California

I am a Herbert and Ruth Busemann Assistant Professor (postdoc) at the University of Southern California from 2024-2027.

I obtained my PhD from Rutgers under the guidance of Chris Woodward.

My CV can be found here. 

I will be on the academic job market this Fall, looking for positions starting in Fall 2027.


Academic profile portrait

Research

Preprints and publications


PreprintSubmitted

A contact homotopy type

In this joint project with Amanda Hirschi, we construct global Kuranishi charts for genus zero SFT curves and use them to construct a contact flow category.



PreprintSubmitted

Bohr-Sommerfeld profile surgeries and Disk Potentials

This project develops new surgeries on Lagrangians based on fillings of Bohr Sommerfeld covers and as an application proves existence of exotic ( more than lifts of Vianna! ) monotone tori in projective spaces and some other toric symplectic manifolds.

Preprint

Augmentation varieties and disk potentials III

The third paper in the series with my collaborators K. Blakey, Y. Sun, and Chris Woodward proves a conjecture by Dimitroglou-Rizell and Golovko about disk potential of monotone Lagrangians and augmentation polynomial of their Bohr Sommerfeld covers. This project also has results on non-existence of exact fillings of certain Bohr Sommerfeld covers.


Preprint

Augmentation varieties and disk potentials II

The second paper in the series with my collaborators K. Blakey, Y. Sun, and Chris Woodward constructs the Legendrian contact homology ( aka Chekanov - Eliashberg dga).


SeriesSubmitted

Augmentation varieties and disk potentials I

The first paper in the series with my collaborators K. Blakey, Y. Sun, and Chris Woodward deals with the foundations of disk counting for Bohr Sommerfeld Legendrian covers.

Journal articleJournal of Fixed Point Theory and Applications

Infinitely many monotone Lagrangian tori in higher projective spaces

In this joint project with Amanda Hirschi and Luya Wang we prove existence of infinitely many Hamiltonian isotopy classes of monotone Lagrangian tori in projective spaces.

Journal articleAdvances in Mathematics

Floer Cohomology and Higher Mutations

This paper develops tools for comparing disk potentials using SFT neckstretching and extends Pascaleff-Tonkonogs notion of higher mutations to non-toric Lagrangians.

Seminars and Events

Seminars and events

  • I co-organized a sectional meeting at the AMS Spring Western Sectional 2025.
  • I have been co-organizing the USC Topology seminar since 2024.
  • I co-organized the Rutgers Symplectic Geometry seminar from 2022 to 2024.
  • I organized the Graduate Student Geometry and Topology seminar at Rutgers from 2020 to 2022.

Travel

Upcoming  conferences and visits

  • ICM 2026, Philadephia — July 23–30
  • Rutgers Symplectic Summer School — August 17–22
  • Lagrangian Floer Theory and Applications, Harvard — September 28–October 2
  • Machine Learning for Mathematics, SLMath — March 8–15, 2027