Uma Divakaran
UGC Assistant Professor
Uma Divakaran - csb.ac.in

Education:

  • M.Sc-PhD Dual Degree IIT Kanpur (2010) Thesis Title "Slow quenching dynamics in quantum critical systems"
  • B.Sc. in Physics Delhi University (2003)

Positions:

  • UGC Assistant Professor, Centre for Excellence in Basic Sciences, Mumbai, (April 2015 - )
  • DST-INSPIRE Faculty, Department of Physics, IIT Kanpur (2013-2015)
  • Post Doctoral Fellow, IIT Kanpur (2012-2013)
  • Alexander von Humboldt Postdoctoral Fellow, Saarland University, Saarbrucken, Germany (2010)

Research Interestes:

  • Quantum phase transitions, Non-equilibrium dynamics in quantum phase transitions and its connection to quantum information
  • Breakdown in fiber bundle models

Selected Publications:

  • Uma Divakaran and K. Sengupta
    Dynamic freezing and defect suppression in the tilted one-dimensional Bose-Hubbard model
    Phys. Rev. B 90, 184303 (2014).

  • Gergo Roosz, Uma Divakaran, H. Rieger, F. Igloi
    Nonequilibrium quantum relaxation across a localization-delocalization transition
    Phys.Rev.B 90, 184202 (2014).
  • Atanu Rajak and Uma Divakaran
    Fidelity susceptibility and Loschmidt echo for generic paths in a three spin interacting transverse Ising model
    J. Stat. Mech (2014) P04023.

  • Uma Divakaran
    The three site interacting spin chain in a staggered field: Fidelity versus Loschmidt echo
    Phys. Rev. E. 88, 052122 (2013).

  • Tanay Nag, Uma Divakaran and Amit Dutta
    The scaling of the decoherence factor of a qubit coupled to a spin chain driven across quantum critical points.
    Phys. Rev. B (Rapid Comm.) 86, 020401 (2012).

  • Uma Divakaran, Ferenc Igloi and Heiko Rieger
    Non-equilibrium quantum dynamics after local quenches.
    J. Stat. Mech 11, 10027 (2011).

  • Amit Dutta, R. R. P. Singh and Uma Divakaran
    Quenching through Dirac and semi-Dirac points in optical Lattices: Kibble-Zurek scaling for anisotropic Quantum-Critical systems.
    Europhys. Lett. 89, 67001 (2010)

  • Uma Divakaran, Amit Dutta and Diptiman Sen
    Landau-Zener problem with waiting at the minimum gap and related quench dynamics of a many body system.
    Phys. Rev. B 81, 054306 (2010).

  • Debanjan Chowdhury, Uma Divakaran and Amit Dutta
    Adiabatic dynamics in passage across quantum critical lines and gapless phases.
    Phys. Rev. E 81, 012101 (2010).

  • Uma Divakaran and Amit Dutta
    Reverse quenching in a one-dimensional Kitaev model.
    Phys. Rev. B 79, 224408 (2009).

  • Uma Divakaran, Victor Mukherjee, Amit Dutta and Diptiman Sen
    Defect production due to quenching through a multicritical point.
    J. Stat. Mech: Theory and Experiment (2009) P02007.

  • Uma Divakaran, Amit Dutta and Diptiman Sen
    Quenching along a gapless line: A different exponent for defect density.
    Phys. Rev. B 78, 144301 (2008).

  • Uma Divakaran, and Amit Dutta
    Random fiber bundle with many discontinuities in threshold distribution.
    Phys. Rev. E 78, 021118 (2008).

  • Uma Divakaran, and Amit Dutta
    The effect of the three-spin interaction and the next nearest neighbor interaction on the quenching dynamics of a transverse Ising model.
    Journal of Statistical Mechanics: Theory and Experiment, November, P11001 (2007).

  • Victor Mukherjee, Uma Divakaran, Amit Dutta and Diptiman Sen
    Quenching Dynamics of a quantum XY spin-1/2 chain in a transverse field.
    Phys. Rev. B 76, 174303 (2007)

  • Uma Divakaran, and Amit Dutta
    Critical behaviour of random fibers with mixed Weibull Distribution.
    Phys. Rev. E. 75, 011109 (2007).

  • Uma Divakaran, and Amit Dutta
    Effect of discontinuity in the threshold distribution on the critical behavior of a random fiber bundle.
    Phys. Rev. E, 75, 011117 (2007).

Address

UM-DAE Centre for Excellence in Basic Sciences
Health Centre, University of Mumbai,
Vidyanagari Campus, Kalina, Santacruz (East), Mumbai 400098, India.
Phone: 91-22-26524983
Fax: 91-22-26524982
General Enquiries: This email address is being protected from spambots. You need JavaScript enabled to view it.
Website Related: This email address is being protected from spambots. You need JavaScript enabled to view it.

About Us

CBS was set up by the Department of Atomic Energy and the University of Mumbai in 2007. CBS offers a 5 year integrated MSc program in Basic Sciences, with undergraduate teaching embedded in a postgraduate and research environment, for students who have completed 10+2 schooling or its equivalent.