Research homepage

Tuhin Ghosh

Reader · Harish-Chandra Research Institute · Analysis & PDEs

Heartiest greetings from my web-page. I work at the Harish-Chandra Research Institute. The late Indian-American mathematician Harish-Chandra is honoured by having his name given to this place. It is part of the Homi Bhabha National Institute, India. Homi Bhabha was a nuclear physicist of the last century.

My research is concerned with the analysis of partial differential equations arising from mathematical physics, specially inverse problems, homogenization, and nonlocal PDEs.

A separate page records teaching activities here.

You can get in touch with me at tuhinghosh@hri.res.in or, imaginetuhin@gmail.com

Research interests

Analysis & PDEs

Inverse problems

Recovery of unknown media, coefficients of PDEs representing physical models from boundary, exterior, or scattering measurements.

Homogenization

Macroscopic limits of heterogeneous media by suitably averaging out small scales and incorporating their effects on large scales.

Nonlocal PDEs

Fractional and nonlocal differential operators, unique continuation, rigidity, and Calderón-type problems.


Previous positions

I held postdoctoral positions at IAS, HKUST, Hong Kong, and at the University of Washington, Seattle, in the inverse problems group of Professor Gunther Uhlmann; and at Universität Bielefeld, in the analysis group of Professor Moritz Kassmann.

Alma mater

I graduated from TIFR Bangalore Centre, upon receiving a PhD in Mathematics, under the supervision of Professor M. Vanninathan, with a thesis titled Homogenization Issues in PDEs Arising in Applications. I completed my undergraduate studies at Presidency College, Calcutta.

Publications & preprints

With gratitude to all collaborators

For a citation-oriented list, please see my Google Scholar profile.

Preprints
  • Cătălin Cârstea and Tuhin Ghosh. An inverse source problem for the Monge–Ampere equation from large boundary data arXiv
  • Cătălin Cârstea and Tuhin Ghosh. Inverse boundary value problems for certain doubly nonlinear parabolic and elliptic equations. arXiv
  • Saumyajit Das, Tuhin Ghosh, and Susovan Pramanik. Anisotropic Calderón problem for a logarithmic Schrödinger operator of order 2+ on closed Riemannian manifolds. arXiv
  • Saumyajit Das, Tuhin Ghosh, and Shiqi Ma. Inverse Scattering for the Fractional Schrödinger equation. arXiv
  • Saumyajit Das and Tuhin Ghosh. Fractional Borg-Levinson problem with small non-negative potential of small growth. arXiv
  • Ali Feizmohammadi, Tuhin Ghosh, Katya Krupchyk, Angkana Rüland, Johannes Sjöstrand, and Gunther Uhlmann. Fractional anisotropic Calderón problem with external data. arXiv
  • Tuhin Ghosh and Gunther Uhlmann. The Calderón problem for nonlocal operators. arXiv
  • Tuhin Ghosh, Venkateswaran P. Krishnan, and Muthusamy Vanninathan. Inverse Diffusivity Problem via Homogenization Theory. arXiv
Published articles
  • Giovanni Covi, Tuhin Ghosh, Angkana Rüland, and Gunther Uhlmann. A Reduction of the Fractional Calderón Problem to the Local Calderón Problem by Means of the Caffarelli-Silvestre Extension. Journal de Mathématiques Pures et Appliquées. DOI
  • Cătălin Cârstea, Tuhin Ghosh, and Gen Nakamura. An inverse boundary value problem for the inhomogeneous porous medium equation. SIAM Journal of Applied Mathematics. DOI
  • Ali Feizmohammadi, Tuhin Ghosh, Katya Krupchyk, and Gunther Uhlmann. Fractional anisotropic Calderón problem on closed Riemannian manifolds. Journal of Differential Geometry. DOI
  • Amrita Ghosh and Tuhin Ghosh. Unique continuation and inverse problem for an anisotropic beam bending equation. Journal of Differential Equations. DOI
  • Loredana Bălilescu, Carlos Conca, Tuhin Ghosh, Jorge San Martín, and Muthusamy Vanninathan. Bloch spectral analysis in the class of non-periodic laminates. ITM Web of Conferences. DOI
  • Cătălin Cârstea, Tuhin Ghosh, and Gunther Uhlmann. An inverse problem for the porous medium equation with a possibly singular absorption term. SIAM Journal on Mathematical Analysis. DOI
  • Tuhin Ghosh. Nonlocal inverse problem with boundary response. Revista Matemática Iberoamericana. DOI
  • Sombuddha Bhattacharyya and Tuhin Ghosh. An Inverse Problem on Determining Second Order Symmetric Tensor for Perturbed Biharmonic Operator. Mathematische Annalen. DOI
  • Loredana Bălilescu, Carlos Conca, Tuhin Ghosh, Jorge San Martín, and Muthusamy Vanninathan. Bloch wave spectral analysis in the class of generalized Hashin-Shtrikman micro-structures. Mathematical Models and Methods in Applied Sciences. DOI
  • Sombuddha Bhattacharyya, Tuhin Ghosh, and Gunther Uhlmann. Inverse Problem for Fractional-Laplacian with Lower Order Non-local Perturbations. Transactions of the American Mathematical Society. DOI
  • Angkana Rüland, Tuhin Ghosh, Mikko Salo, and Gunther Uhlmann. Uniqueness and reconstruction for the fractional Calderón problem with a single measurement. Journal of Functional Analysis. DOI
  • Cherif Amrouche, Carlos Conca, Amrita Ghosh, and Tuhin Ghosh. Uniform W1,p estimates for an elliptic operator with Robin boundary condition in a C1 domain. Calculus of Variations and PDE. DOI
  • Tuhin Ghosh, Mikko Salo, and Gunther Uhlmann. The Calderón problem for the fractional Schrödinger equation. Analysis & PDE. DOI
  • Loredana Bălilescu, Amrita Ghosh, and Tuhin Ghosh. H-convergence and homogenization of non-local elliptic operators in both perforated and non-perforated domains. ZAMP. DOI
  • Sombuddha Bhattacharyya and Tuhin Ghosh. Inverse boundary value problem of determining up to a second order tensor appearing in the lower order perturbation of a polyharmonic operator. Journal of Fourier Analysis and Applications. DOI
  • Tuhin Ghosh and Ashwin Tarrikere. Approximate isotropic cloak for the Maxwell equations. Journal of Mathematical Physics. DOI
  • Loredana Bălilescu, Carlos Conca, Tuhin Ghosh, Jorge San Martín, and Muthusamy Vanninathan. The dispersion tensor and its unique minimizer in Hashin-Shtrikman micro-structures. Archive for Rational Mechanics and Analysis. DOI
  • Tuhin Ghosh and Karthik Iyer. Cloaking for a quasi-linear elliptic partial differential equation. Inverse Problems and Imaging. DOI
  • Tuhin Ghosh, Yi-Hsuan Lin, and Jingni Xiao. The Calderón problem for variable coefficients nonlocal elliptic operators. Communications in Partial Differential Equations. DOI
  • Grégoire Allaire, Tuhin Ghosh, and Muthusamy Vanninathan. Homogenization of Stokes system using Bloch waves. Networks and Heterogeneous Media. DOI
  • Tuhin Ghosh and Muthusamy Vanninathan. Convergence relative to a microstructure: properties, optimal bounds and application. Journal of Abstract Differential Equations and Applications. Link
  • Tuhin Ghosh and Venkateswaran Krishnan. Determination of lower order perturbations of the polyharmonic operator from partial boundary data. Applicable Analysis. DOI
  • Tuhin Ghosh. An inverse problem on determining up to first order perturbations of a fourth order operator with partial boundary data. Inverse Problems. Link

Related activities

Talks, supervision & grants
Selected talks (slides)
  • On inverse scattering problemslide
  • Non-local Borg-Levinson problemslide
  • Inverse problems for the porous medium equationslide
  • (Inverse) Homogenization for Maxwell systemslide
Awarded grants
  • NBHM Research Grant (2025–Present): Controlling wave propagation in highly heterogeneous medium
  • Advanced Research Grant, ANRF (2026–Present): Electromagnetic waves: cloaking, controllability, and heterogeneity.

°
Recipient of the EAIP Young Scientist Award, 2026.


Inverse Problems International Association, Eurasian Association on Inverse Problems (EAIP)
Current supervision
  • PhD Student: Sushovan Pramanik (2024–Present)
  • Postdoctoral scholars:
    Dr. Saumyajit Das (HRI Institute Fellowship)
    Dr. Rahul Poddar (ANRF-NPDF Fellowship).

News

Announcements
Upcoming event, 12–13 May 2026 at HRI: International Women in Mathematics Day.
Advertisement for hiring postdocs against a sanctioned Advanced Research Grant, ANRF, will be announced later this year.