Indian Association for the Cultivation of Science

Name : Arnab Sen

Deptartment : School of Physical Sciences
Designation : Associate Professor
Contact : +91 33 2473 4971 (Ext:2283)
Email :


Research  Interests

Mainly in strongly correlated systems and statistical mechanics especially emergent and out-of-equilibrium aspects of many-body physics. Recent focus areas include:

  • Frustrated magnets and spin liquids.
  • Unconventional phase transitions.
  • Nonequilibrium quantum dynamics and phases.
  • Numerical many-body physics (Monte Carlo algorithms etc).
  • Spin systems with constrained Hilbert spaces and lattice gauge theories. 

Some recent talks:


Academic Profile

Academic Profile


  • B. Sc. (Hons.), St. Stephen's College (2000-2003).
  • M. Sc. (by thesis) and Ph.D., Tata Institute of Fundamental Research (2003-2009).
  • M.Sc. Thesis: Deconfined quantum critical points (Advisor: Prof. Kedar Damle) [pdf file]
  • Ph.D. Thesis: Frustrated antiferromagnets with easy axis anisotropy (Advisor: Prof. Kedar Damle) [pdf file]

Current Academic Appointment

  • Associate Professor, Indian Association for the Cultivation of Science (2018-Present).

Past Academic Appointments

  • Assistant Professor, Indian Association for the Cultivation of Science (2013-2018).
  • Postdoctoral Fellow in Condensed Matter Group at MPIPKS (2011-2013).
  • Research Associate in Condensed Matter Theory Group, Boston Universsity (2009-2011).

Current Group Members:

  • Indrajit Sau (PhD Student; Institute Fellow)
  • Mainak Pal (PhD Student; Institute Fellow)

Past Group Members:

  • Anindya Biswas (Postdoc, RA II; Institute Fellow)
  • Swarup Ghosh (Masters Project Student)
  • Sourav Nandy (PhD Student; Institute Fellow) (Ph.D. received from Calcutta University on September 16, 2020) -> postdoc at IIT Bombay [pdf file of Sourav's thesis]
  • Tushar Kanti Bose (Postdoc, RA 1, Institute Fellow) -> Faculty at Srikrishna College, Bagula, West Bengal
  • Sutapa Samanta (Postdoc, RA 1, Institute Fellow) -> postdoc at Western Washington University, USA



Will be available soon.




The most current list is on the arXiv (

Selected Publications:

[1] arXiv:2012.08540 [pdfother]
Quantum scars from zero modes in an Abelian lattice gauge theory on ladders
Journal-ref: Phys. Rev. Lett. 126, 220601 (2021)
[2] arXiv:1907.08212 [pdfother]
Collapse and revival of quantum many-body scars via Floquet engineering
Journal-ref: Phys. Rev. B 101, 245107 (2020)
[3] arXiv:1803.05597 [pdf, ps, other]
Tuning a random field mechanism in a frustrated magnet
Journal-ref: Phys. Rev. B 98, 024206 (2018)
[4] arXiv:1906.10342 [pdfother]
The dipolar spin glass transition in three dimensions
Journal-ref: Phys. Rev. B 100, 064425 (2019)
[5] arXiv:1701.07596 [pdf, other]
Aperiodically driven integrable systems and their emergent steady states
Journal-ref: Phys. Rev. X 7, 031034 (2017)
[6] arXiv:1705.10670 [pdf, other]
Duality between the deconfined quantum-critical point and the bosonic topological transition
Journal-ref: Phys. Rev. X 7, 031052 (2017)
[7] arXiv:1607.05110 [pdf, other]
Level spectroscopy in a two-dimensional quantum magnet: Linearly dispersing spinons at the deconfined quantum critical point
Journal-ref: Phys. Rev. B 94, 144416 (2016)
[8] arXiv:1511.03668 [pdf, other]
Entanglement generation in periodically driven integrable systems: dynamical phase transitions and steady state
Journal-ref: Phys. Rev. B 94, 214301 (2016)
[9] arXiv:1605.09225 [pdf, other]
Eigenstate Gibbs Ensemble in Integrable Quantum Systems
Journal-ref: Phys. Rev. B 94, 245131 (2016)
[10] arXiv:1405.0668 [pdf, other]
A topological spin glass in diluted spin ice
Journal-ref: Phys. Rev. Lett. 114, 247207 (2015)
[11] arXiv:1212.2112 [pdf, ps, other]
Coulomb phase diagnostics as function of temperature, interaction range and disorder
Journal-ref: Phys. Rev. Lett. 110, 107202 (2013)
[12] arXiv:1110.5874 [pdf, ps, other]
Ashkin-Teller criticality and pseudo first-order behavior in a frustrated Ising model on the square lattice
Journal-ref: Phys. Rev. Lett. 108, 045702 (2012)
[13] arXiv:1007.4507 [pdf, ps, other]
Fractional spin textures in the frustrated magnet SCGO19
Journal-ref: Phys. Rev. Lett. 106, 127203 (2011)




  • PHS 4204: Statistical Mechanics, Spring Semester 2022 (M.Sc core course at IACS).
  • PHS 4204: Statistical Mechanics, Spring Semester 2021 (M.Sc. core course at IACS).
  • PHS 4204: Statistical Mechanics, Spring Semester 2020 (M.Sc. core course at IACS).
  • PHS 4204: Statistical Mechanics, Spring Semester 2019 (M.Sc. core course at IACS).
  • Condensed Matter Physics II (co-instructor, Krishnendu Sengupta), Autumn Semester 2017 (Ph.D. course).
  • Statistical Mechanics II (focus on Monte-Carlo algorithms for correlated systems), Autumn Semester 2016 (Ph.D. course).
  • Statistical Mechanics II, Autumn Semester 2015 (Ph.D. course).
  • Statistical Mechanics II, July-December 2014 (Ph.D. course).

Lecture slides/videos:

Lecture notes from the School on algorithms in lattice gauge theory and spin systems held at IACS can be found here []

Videos of lectures from the School on frustrated magnetism held at IMSc can be found here []




  • Faculty Associate of the International Center for Theoretical Sciences, TIFR, Bangalore (2022--)
  • Member of the Advisory Panel of the journal Physica Scripta (2018 to 2021).
  • Young Associate in the Department of Physics, RKMVU (2018 to 2020).
  • Young Scientist Medal awarded by the Indian National Science Academy (2017).
  • Head of Max Planck Partner Group at IACS [with MPIPKS, Dresden] (2015-2020).
  • JSPS (Japan)--DST (India) special lecture tour program (January, 2015).
  • Geeta Udgaonkar Award for best Ph.D. thesis in Physical Sciences at TIFR (2010).
  • St. Stephen's College-Sumitomo Corporation Scholarship (2001-2003).
  • Kishore Vaigyanik Protsahan Yojana Fellowship, Government of India (2001-2003).


Contact Us


Arnab Sen

Office: C-420, Centenary Building
Department of Theoretical Physics,
Indian Association for the Cultivation of Science,
2A&2B Raja S C Mullick Road,
Kolkata 700032.
Phone: +91-33-2473-4971 (Extn: 2283)