हिंदी में

ভারতীয় বিজ্ঞান শিক্ষা এবং গবেষণা প্রতিষ্ঠান কলকাতা

भारतीय विज्ञान शिक्षा एवं अनुसंधान संस्थान कोलकाता

INDIAN INSTITUTE OF SCIENCE EDUCATION AND RESEARCH KOLKATA

... towards excellence in science

An Autonomous Institution, Under the Ministry of Education, Government of India

Amlan Kusum Roy

Professor
Dept: Chemical Sciences (DCS)
E-mail: akroy [at] iiserkol.ac.in

All Publications:

  1. Majumdar, Sangita and Roy, Amlan K.. 2023."Shell-confined He atom: A DFT-based approach ." AIP Conference Proceedings 2861, 020001 (2023), 2861, 020001
  2. Chowdhury, Saptarshi; Mukherjee, Neetik and Roy, Amlan K.. 2023." Hydrogen-like plasmas under endohedral cavity." Quantum Reports , 5, 459-474
  3. Nath, Debraj and Roy, Amlan K.. 2023."Information theoretic measures in Makarov potential." Eur. Phys. J. Plus, 138, 395
  4. Nath, Debraj and Roy, Amlan K.. 2023."Energy and information-entropic measures of Hulthen potential in D dimension by a new approximation to centrifugal term." J. Math. Chem., 61, 835
  5. Nath, Debraj and Roy, Amlan K.. 2023." Average energy and Shannon entropy of a confined harmonic oscillator in a time-dependent moving boundary." J. Math. Chem., 61, 1491-1503
  6. Mukherjee, Neetik; Patra, Chandra Nath and Roy, Amlan K.. 2023."Hellmann-Feynman theorem and internal pressure for atoms, molecules and plasmas under pressure." J. Phys. B, 56, 065001
  7. Mukherjee, Neetik; Patra, Chandra Nath and Roy, Amlan K.. 2022."Metallization in hydrogenlike systems under high pressure." Phys. Rev. A, 106, 032812
  8. Nath, Debraj and Roy, Amlan K.. 2022."Time-correlation function and average energy of molecules in presence of Deng-Fan potential in a moving boundary." Nonlinear Dynamics, 110, 1597–1612
  9. Majumdar, Sangita and Roy, Amlan K.. 2022."Recent Advances in Cartesian-GridDFT in Atoms and Molecules." Frontiers in Chemistry, 10, 926916
  10. Mukherjee, Neetik; Chakraborty, Sudipta and Roy, Amlan K.. 2022."Multipole oscillator strength and polarizability for confined hydrogen-like atoms under high pressure." J. Phys. B, 55, 145001
  11. Ghosal, Abhisek and Roy, Amlan K.. 2022."A real-time TDDFT scheme for strong-field interaction in Cartesian coordinate grid." Chem. Phys. Lett., 796, 139562
  12. Roy, Raj; Ghosal, Abhisek and Roy, Amlan K.. 2022."Charge-Transfer Excitation within a Hybrid-(G)KS Framework through Cartesian Grid DFT." J. Phys. Chem. A, 126, 1448–1457
  13. Mukherjee, Neetik and Roy, Amlan K.. 2021."Shell-confined atom and plasma: Incidental degeneracy, metallic character, and information entropy." Phys. Rev. A, 104, 042803
  14. Nath, Debraj and Roy, Amlan K.. 2021."Analytical solution of D dimensional Schrödinger equation for Eckart potential with a new improved approximation in centrifugal term." Chem. Phys. Lett. , 780, 138909
  15. Ghosal, Abhisek and Roy, Amlan K.. 2021."A self-consistent systematic optimisation of range-separated hybrid functionals from first principles." Mol. Phys. , 120, e1983056
  16. Roy, Raj; Ghosal, Abhisek and Roy, Amlan K.. 2021."A Simple Effective SCF Method for Computing Optical Gaps in Organic Chromophores." Chemistry An Asian Journal, 16, 2729-2739
  17. Mukherjee, Neetik; Patra, Chandra Nath and Roy, Amlan K.. 2021."Confined hydrogenlike ions in plasma environments." Phys. Rev. A, 104, 012803
  18. Majumdar, Sangita and Roy, Amlan K.. 2021."Density functional study of atoms spatially confined inside a hard sphere." Int. J. Quant. Chem., 121, e26630
  19. Nath, Debraj and Roy, Amlan K.. 2021."Ro-vibrational energy and thermodynamic properties of molecules subjected to Deng–Fan potential through an improved approximation." Int. J. Quant. Chem., 121, e26616
  20. Nath, Debraj and Roy, Amlan K.. 2021."Ro-vibrational energy analysis of Manning–Rosen and Pöschl–Teller potentials with a new improved approximation in the centrifugal term." Eur. Phys. J. Plus, 136, 430
  21. Majumdar, Sangita; Mukherjee, Neetik and Roy, Amlan K.. 2021."Confined H? ion within a density functional framework." Eur. Phys. J. D, 75, 86
  22. Ghosal, Abhisek; Gupta, Tarun; Mahato, Kishalay and Roy, Amlan K.. 2021."Excitation energies through Becke’s exciton model within a Cartesian-grid KS DFT." Theor. Chem. Acc. , 140, 2
  23. Mukherjee, Neetik and Roy, Amlan K.. 2021."Energy and information analysis for confined Hatom in harmonic environment." J. Phys.: Conf. Ser., 1850, 012013
  24. Mukherjee, Neetik and Roy, Amlan K. 2020."Analysis of Compton profile through information theory in H-like atoms inside impenetrable sphere." J. Phys. B, 53, 235002
  25. Majumdar, Sangita and Roy, Amlan K. 2020."Shannon Entropy in Confined He-Like Ions within a Density Functional Formalism." Quantum Reports, 2, 189-207
  26. Mukherjee, Neetik and Roy, Amlan K.. 2019."Some complexity measures in confined isotropic harmonic oscillator." J. Mathematical Chemistry, 57, 1806-1821
  27. Ghosal, Abhisek; Mandal, Tanmay and Roy, Amlan K.. 2019."Efficient HF exchange evaluation through Fourier convolution in Cartesian grid for orbital-dependent density functionals." J. Chem. Phys., 150, 064104
  28. Majumdar, Sangita; Mukherjee, Neetik and Roy, Amlan K.. 2019."Information entropy and complexity measure in generalized Kratzer potential ." Chem. Phys. Lett. , 716, 257
  29. Mukherjee, Neetik and Roy, Amlan K.. 2019."Quantum mechanical virial-theorem for confined quantum systems, Phys. Rev. A 99 022123-11 (2019). ." Phys. Rev. A, 99, 022123
  30. Mandal, Tanmay; Ghosal, Abhisek and Roy, Amlan K.. 2019."Static polarizability and hyperpolarizability in atoms and molecules through a Cartesian-grid DFT." Theor. Chem. Acc., 138, 10
  31. Mukherjee, Neetik and Roy, Amlan K.. 2018."Relative Fisher information in some central potentials." Ann. Phys. (N.Y.), 398, 190
  32. Mukherjee, Neetik and Roy, Amlan K.. 2018."Fisher information in confined isotropic harmonic oscillator." Int. J. Quant. Chem., 118, e25727
  33. Ghosal, Abhisek; Mandal, Tanmay and Roy, Amlan K.. 2018."Density functional electric response properties of molecules in Cartesian grid." Int. J. Quant. Chem., 118, e25708
  34. Mukherjee, Neetik and Roy, Amlan K.. 2018."Information entropic measures in confined isotropic harmonic oscillator." Adv. Theory Simul. , 1, 180090
  35. Mukherjee, Neetik and Roy, Amlan K.. 2018."Information-entropic measures for non-zero l states of confined hydrogen-like ions." Eur. Phys. J. D , 72, 118
  36. Mukherjee, Neetik and Roy, Amlan K.. 2018."Information-entropic measures in free and confined hydrogen atom." Int. J. Quant. Chem. , 118, e25596
  37. Mukherjee, Neetik; Majumdar, Sangita and Roy, Amlan K. 2018."Fisher information in confined hydrogen-like ions." Chem. Phys. Lett. , 691 , 449-455
  38. Majumdar, Sangita; Mukherjee, Neetik and Roy, Amlan K. 2017."Various complexity measures in confined hydrogen atom." Chem. Phys. Lett., 687, 322-329
  39. Ghosal, Abhisek; Mukherjee, Neetik and Roy, Amlan K. 2016."Information entropic measures of a quantum harmonic oscillator in symmetric and asymmetric confinement within an impenetrable box." Ann. Phys. (Berlin), 528, 796-818
  40. Roy, Amlan K. 2016." Critical parameters and spherical confinement of H atom in screened Coulomb potential." Int. J. Quant. Chem., 116, 953-960
  41. Mukherjee, Neetik and Roy, Amlan K. 2016."Quantum confinement in an asymmetric double-well potential through energy analysis and information entropic measure." Ann. Phys. (Berlin), 528, 412-433
  42. Sadhukhan, Mainak; Roy, Amlan K; Panigrahi, P K. and Deb, B M. 2016."Dynamics of electronic motion in hydrogen atom under parallel strong oscillating magnetic field and intense laser fields." Int. J. Quant. Chem,, 116, 377-387
  43. Roy, Amlan K. 2015." Quantum confinement in 1D systems through an imaginary-time evolution method." Mod. Phys. Lett. A, 30, 1550176
  44. Mukherjee, Neetik; Roy, Arunesh and Roy, Amlan K.. 2015."Information entropy as a measure of tunneling and quantum confinement in a symmetric double-well potential." Ann. Phys. (Berlin), 527, 825-845
  45. Roy, Amlan K. 2015."Spherical confinement of Coulombic systems inside an impenetrable box: H atom and the Hulthen potential." Int. J. Quant. Chem, , 115, 937-947
  46. Roy, Amlan K. 2014."Ground and excited states of spherically symmetric potentials through an imaginary-time evolution method: application to be spiked harmonic oscillators." Journal of Mathematical Chemistry, 52, 2645-2662
  47. Roy, Amlan K. 2014."Confinement in 3D polynomial oscillators through a generalized pseudospectral method." Modern Physics Letters A, 29, 1450104
  48. Roy, Amlan K. 2014."Ro-Vibrational spectroscopy of molecules represented by a Tietz-Hua oscillator potential ." Journal of Mathematical Chemistry, 52, 1405-1413
  49. Roy, Amlan K. 2014."Studies on bound-state spectra of Manning–Rosen potential." Modern Physics Letters A, 29, 1450042
  50. Roy, Amlan K. 2014."Ro-Vibrational Studies of Diatomic Molecules in a Shifted Deng–Fan Oscillator Potential." International Journal of Quantum Chemistry, 114, 383-391
  51. Roy, Amlan K. 2014."Studies on the Bound-State Spectrum of Hyperbolic Potential." Few-Body Systems, 55, 143-150
  52. McCarthy, Shane P.; Roy, Amlan K.; Kazachenko, Sergey and Thakkar, Ajit J. 2013."A dispersion-corrected density functional theory study of hexamers of formic acid." Canadian Journal of Chemistry (Special Issue dedicated to Professor Denis Salahub), 91, 527-528
  53. Roy, Amlan K. 2013."Studies on some exponential screened Coulomb potentials ." International Journal of Quantum Chemistry, 113, 1503-1510
  54. Roy, Amlan K. 2013."Accurate ro-vibrational spectroscopy of diatomic molecules in a Morse oscillator potential." Results in Physics, 3, 103-108
  55. Roy, Amlan K. 2011."Density functional calculation of many-electron systems in Cartesian coordinate grid." Journal of Mathematical Chemistry, 49, 1687-1699
  56. Roy, Amlan K; Speyer, Joseph L; Bartell, Lizette and Neuhauser, Daniel. 2010."Spin-birefringence in molecular currents: Tellurium and gold complexes." Chemical Physics Letters (Significant contribution), 484, 104-109
  57. Roy, Amlan K. 2010."A new DFT method for atoms and molecules in Cartesian grid." Trends in Physical Chemistry (Invited article), 14, 27-44
  58. Jalbout, Abraham F; Contreras-Torres, Flavio F; Roy, Amlan K and Leon, Aned de. 2009."Monte Carlo simulation on the RKKY interactions of Co-doped ZnS and ZnSe nano-films." Journal of Computational and Theoretical Nanoscience, 6, 148-152
  59. Roy, Amlan K. 2008."Pseudopotential density functional treatment of atoms and molecules in cartesian coordinate grid." Chemical Physics Letters (Significant contribution), 461, 142-149
  60. Jalbout, Abraham F; Roy, Amlan K; Leon, Aned de and Jimenez-Fabian, Isaac. 2008."Metallo[Endo] fullerene-SWNT interactions: A theoretical study." Journal of Molecular Structure: THEOCHEM, 858, 39-45

  1. Majumdar, Sangita; Mukherjee, Neetik and Roy, Amlan K.. 2023." Information entropy in excited states in confined quantum systems", "Understanding information entropy". Nova Science Publishers, ISBN: 9798886978391
  2. Mukherjee, Neetik and Roy, Amlan K. 2019." Information analysis in free and confined harmonic oscillator", "Harmonic Oscillators: Types, Functions and Applications". Nova Science Publishers, Hauppauge, NY, USA, ISBN: 9781536158106
  3. Ghosal, Abhisek and Roy, Amlan K. 2016." DFT calculations of atoms and molecules in Cartesian grid", "Specialist Periodical Reports: Chemical Modelling, Applications and Theory, Vol. 13". RSC, ISBN: 9781782625414
  4. Roy, Amlan K. 2012." ", "Theoretical and Computational Developments in Modern Density Functional Theory". Nova Science Publishers, Inc., ISBN: 9781619427792
  5. Roy, Amlan K. 2011." A density functional method for general excited states in atoms", "Focus on Quantum Mechanics". Nova Science Publishers, Inc., ISBN: 9781621006800
  6. Roy, Amlan K. 2011." A general method for central potentials in quantum mechanics", "Mathematical Chemistry". Nova Science Publishers, Inc., ISBN: 9781608768943
  7. Roy, Amlan K. 2010." A new density functional method for electronic structure calculation of atoms and molecules", "Handbook of Computational Chemistry Research". Nova Science Publishers, Inc., ISBN: 9781607410478