DR. PRADIPTA GHOSH, Ph.D.
Assistant Professor

Teaching Interest:

  1. Quantum Chemistry
  2. Classical & Statistical Thermodynamics

 

Teaching Experience:

  1. UG: 17 Years 7 Months
  2. PG: 12 Years 10 Months

 

Research Interest:

  1. Electronic Structure Methods:Development and application of many-body techniques to develop theoretical methods to treat the dynamic and non-dynamic electron correlations in a judiciously balanced manner which become ubiquitous in the dissociative regime of molecular systems. The theories developed in this manner are size-extensive and size-consistent and are capable of handling molecules with arbitrary complexity and generality. In this direction I have worked in the development of state-specific multi-reference perturbation and the closely related coupled electron-pair approximations. The theories developed were further implemented to the evaluation of spectroscopic constants to judge the efficacy and merit.
  2. Statistical Mechanics of Complex Open Systems:Study of the stochastic nature of the complex open systems using the microscopic system-reservoir model was undertaken. Such studies reveal a plethora of dynamical effects ranging from simple chemical reactions to phenomenon as involved as the stochastic resonance in a variety of physical, chemical and biological systems. Such processes are pivotal in shedding light on a variety of natural phenomena like the intra- and inter-cellular transport processes, signaling of the neurons and many more. The stochastic nature of such situations is a manifestation of the lack of information and it introduces an inherently irreversible nature in the associated dynamics. The classical versions of such systems are well-studied. However, the quantum and/or semi-classical counterparts warrant further elucidation. Such studies have been made by careful investigation of the role of noise and non-linearity in such systems.

 

Representative Listof Publications:

  1. Manna, S., Sinha Ray, S., Ghosh, P., Chattopadhyay, S. (2019) “Structural properties and isomerization of simple S-nitrosothiols: Ab initio studies with a simplified treatment of correlation effects”Mol. Phys. e1641639. [https://doi.org/10.1080/00268976.2019.1641639]
  2. Manna, S., Sinha Ray, S., Ghosh, P., Chattopadhyay, S. (2018) “On the conversion XCN ↔ XNC via an efficient and economic perturbative wavefunction approach" Mol. Phys. 116, 2147–2161. [https://doi.org/10.1080/00268976.2018.1464224]
  3. Sinha Ray, S., Ghosh, P., Chaudhuri, R. K., and Chattopadhyay, S. (2017) “Improved virtual orbitals in state specific multireference perturbation theory for prototypes of quasidegenerate electronic structure” J.Chem. Phys. 146, 064111.[https://doi.org/10.1063/1.4975322]
  4. Banerjee, D. Ghosh., A. Chattopadhyay, S., Ghosh, P. and Chaudhuri, R. K. (2014) “Reinvestigating the ``cis-effect" in 1,2-difluoro derivatives of ethylene and diazene using ab initio multireference method”Mol. Phys.1123206.[https://doi.org/10.1080/00268976.2014.938710]
  5. Ghosh, P., Chattopadhyay, S., and Ray Chaudhuri, J.(2012) “Enhancement of current commensurate with mutual noise-noise correlation in a symmetric periodic substrate: The benefits of noise and nonlinearity” Chem. Phys. 402, 48. [https://doi.org/10.1016/j.chemphys.2012.04.007]
  6. Ghosh, P., Shit, A., Chattopadhyay, S., and Ray Chaudhuri, J. (2011) “A semiclassical approach to explore the bistable kinetics investigation of a Brownian particle in a nonequilibrium environment” J. Stat. Mech. P02026.[https://doi.org/10.1088/1742-5468/2011/02/P02026]
  7. Ghosh, P., Shit, A., Chattopadhyay, S., and Ray Chaudhuri, J. (2011) “A microscopic model for noise induced transport: Heat bath nonlinearly driven by external white noise” Chaos 21, 013117.[https://doi.org/10.1063/1.3545373]
  8. Shit, A., Ghosh, P.,Chattopadhyay, S.,and Ray Chaudhuri, J (2011) “Development of a semiclassicalmethodto compute mobility and diffusion coefficient of Brownian particle in a nonequilibrium environment”Phys.  Rev. E. 83, 031125.[https://doi.org/10.1103/PhysRevE.83.031125]
  9. Ghosh. P., Chattopadhyay, S. and Ray Chaudhuri, J. (2010) “Stochastic resonance in a generalized quantum Kubo Oscillator” J. Phys. Chem.B. 1141368.[https://doi.org/10.1021/jp909858c]
  10. Ghosh, P., Shit, A., Chattopadhyay, S. and Ray Chaudhuri, J. (2010) “Escape of a driven particle from a metastable state: A semiclassical approach” J. Chem. Phys.132, 244506.[https://doi.org/10.1063/1.3443774]
  11. Ghosh, P., Shit, A., Chattopadhyay, S. andRayChaudhuri, J. (2010) “Realization of a Brownian engine to study transport phenomena: A semiclassical approach” Phys. Rev. E81 061112.[https://doi.org/10.1103/PhysRevE.81.061112]
  12. Ghosh. P., Shit, A., Chattopadhyay, S. and Ray Chaudhuri, J. (2010) “External noise driven bath and the generalized semi-classical Kramers theory” Phys. Rev. E 82, 041113.[https://doi.org/10.1103/PhysRevE.82.041113]
  13. Pahari, D., Ghosh, P., Mukherjee, D. and Chattopadhyay, S.(2006) “Towards the Development and Applications of Manifestly Spin-free Multi-reference Coupled Electron-pair Approximation (MRCEPA) like Methods: A State Specific Approach” Theor. Chem. Acc. 116, 621-636.[https://doi.org/10.1007/s00214-006-0108-2]
  14. Chattopadhyay, S., Ghosh, P., and Mahapatra, U. S. (2003) “Applications of Size-consistent State-specific Multireference Coupled Cluster (SS-MRCC) Theory to Study the Potential Energy Curves of Some Interesting Molecular Systems”, J. Phys. B. 37, 495-510.[https://doi.org/10.1088/0953-4075/37/2/016]
  15. Chattopadhyay, S.,Mitra, A., Jana, D., Ghosh, P. and Sinha, D. (2002): “Full Effects of Triples in a Valence Universal Multi-reference Coupled Cluster Calculations”, Chem. Phys. Lett., 361,298-306.[https://doi.org/10.1016/S0009-2614(02)00974-0]
  16. Ghosh, P., Chattopadhyay, S., Jana, D. and Mukherjee, D. (2002): “State-specific Multi-reference Perturbation Theories with Relaxed Coefficients: Molecular Applications”, Int. J. Mol. Sci.,3, 733-754.[https://doi.org/10.3390/i3060733]

 

Book Chapter:

  1. Chattopadhyay, S.,Mahapatra, U. S., Ghosh, P. and Mukherjee, D. (2002): “State-specific Multi-reference Coupled-cluster Based Methods for PES and their Approximate Variants”, in Low-Lying Potential Energy Surfaces, M. R. Hoffmann and K. G. Dyall Eds. (ACS Symposium Series No. 828, Washington, DC) 109-152. [ISBN13: ‍9780841237926; eISBN: ‍9780841219298; DOI: 10.1021/bk-2002-0828]

 

Research Guidance:01 (Continuing, jointly with Prof. SudipChattopadhyay, Department of Chemistry, IIEST, Shibpur)

Awards/Fellowships:GATE, CSIR-NET

Email Id: pradipta2002@gmail.com
 
Back to previous page