Biosketch

Dr. J. K. Singh is Professor, NSIT, New Delhi. His area of expertise is to study of spatially homogeneous, isotropic and totally anisotropic cosmological models in General Theory of Relativity as well as alternative theories of gravity with observational constraints. Currently, He is working on inhomogeneous space-times and cyclic universe using various observational constraints and numerical techniques. He has completed his M.Sc. (Mathematics) in 1987 from University of Allahabad and Ph.D. in 1996 from IIT (BHU), Varanasi. He has 23 years teaching experience in Mathematics and 28 years research experience in General Theory of Relativity and Cosmology. He has published 48 research papers in the journals of national as well as international repute. He has presented various research papers, delivered various invited talks, Chaired various sessions in national as well as international conferences. Currently, he is the Head, Department of Mathematics. He has also performed various administrative responsibilities at NSIT such as, Dy. Supdt and Supdt., Theory Examination; Member, BE admission committee;  Coordinator, Dept. of Mathematics and Officer-in Charge of CM Lab I&II.

Areas of Interest

1.  Astrophysics,
2. General Relativity,
3. Cosmology

Publications in International Journal

 

Publications in National Journal

 

Publications in National Conferences

 

Publications in International Conferences

 

Books/Book Chapters

 

Publications (Click to expand)

(a) Papers in Journals

[1] Singh, J. K. and Shri Ram, A Class of New Bianchi I Perfect Fluid Space-Times,  Astrophysics and Space Science, 225, 57-65 (1995).

[2] Shri Ram and Singh, J. K., Some Spatially Homogeneous String Cosmological Models,  General Relativity and Gravitation, 27, 1207-1213 (1995).

[3] Shri Ram and Singh, J. K., Cosmological Models in Certain Scalar-Tensor Theories,  Astrophysics and Space Science, 234, 325-334 (1995).

[4] Singh, J. K. and Shri Ram, Plane Symmetric Mesonic Viscous Fluid Cosmological Models,    Astrophysics and Space Science, 236, 277-284 (1996).

[5] Shri Ram and Singh, J. K., Cylindrically- Symmetric Scalar Waves in General Relativity,

IL Nuovo Cimento, 111B, No. 6, 757-762 (1996).

[6] Singh, J. K. and Shri Ram,  A Study on Totally Anisotropic  Bianchi  type-II  Space – Time, 

IL Nuovo Cimento, 111B, No. 12, 1487 (1996).

[7] Singh, J. K. and Shri Ram, String Cosmological Models of Bianchi type-III, Astrophysics  and Space Science, 246, 65-72 (1997).

[8] Singh, J. K. and Shri Ram, Spatially Homogeneous Cosmological Models in Lyra’s Geometry,   IL Nuovo Cimento, 112B, No. 8, 1157 (1997).

[9] Singh, J. K., Some Exact Solutions of String Cosmological Models in Bianchi type- V Space - Time, Astrophysics and Space Science, 281, 585-594 (2002).

[10] Singh, J. K., Two – Fluid Cylindrically- Symmetric Cosmologies, IL Nuovo Cimento, 118B, No. 1, 27-34 (2003).

[11] Singh, J. K., Some Bianchi type-V Bulk Viscous Fluid Cosmological Models, IL Nuovo Cimento, 119B, No. 5, 445-452 (2004).

[12] Singh, J. K., Some Viscous Fluid Cosmological Models, IL Nuovo Cimento, 120B, No. 12, 1259 (2005).

[13] Singh, J. K., Some Cosmological Models with Heat and Null Radiation Flow, Astrophysics and Space Science, 310, 241-244 (2007).

[14] Singh, J. K., Exact Solutions of some Cosmological Models in Lyra Geometry, Astrophysics and Space Science, 314, 361-364 (2008).

[15] Singh, J. K., Cylindrically Symmetric Cosmologies in Lyra Geometry, Astrophysics and Space Science, 317, 39-44 (2008).

[16] Singh, J. K., Some Bianchi type Cosmological Models in Lyra Geometry, International Journal of Modern Physics A, 23, 30 (2008).

[17] Singh, J. K., String Cosmological Models in Lyra Geometry, International Journal of Theoretical Physics, 48, 905 (2009).

[18] Singh, J. K. and Sharma, N. K., Some Bianchi type- II  Cosmological Models in Brans-Dicke Theory , Astrophysics and Space Science, 327, 293 (2010).

[19] Singh, J. K. and Sharma, N. K., Some Exact Solutions of String Cosmological Models in Bianchi type – II  Space – Time, International Journal of Theoretical Physics, 49, 2902 (2010).

[20] Singh, J. K. and Sharma, N. K., Some Bianchi type -II  Cosmological Models in Lyra’s Geometry, International Journal of Modern Physics A, 25, 2525 (2010).

[21] Singh, J. K., Some Cosmological Models in Scalar-Tensor Theories, Modern Physics Letters A, 25, 2363 (2010).

[22] Singh, J. K., Some Bianchi type-V Cosmological Models in Brans-Dicke Theory, International Journal of Modern Physics A, 25, 3817 (2010).

[23] Singh, J. K., Some Bianchi type-V  Cosmological Models in Self-Creation Theory,  IL Nuovo Cimento,  125B, No. 10, 1125 (2010).

[24] Singh, J. K. and Rani, S.,  Spatially homogeneous Bianchi type-I universes with variable G and , International Journal of Theoretical Physics, 52, 3737 (2013).

[25] Singh, J. K. and Sharma, N. K., Spatially homogeneous Bianchi type universe with anisotropic dark energy in Lyra Geometry, The African Review of Physics, 8:0056, 397 (2013).

[26] Singh, J. K. and Sharma, N. K., Bianchi type-II  dark energy model in scale covariant theory of  gravitation , International Journal of Theoretical Physics, 53, 461 (2014).

[27] Singh, J. K. and Sharma, N. K., Anisotropic Dark Energy Bianchi type-II  Cosmological Models  in Lyra Geometry, International Journal of Theoretical Physics, 53, 1375 (2014).

[28]  Singh, J. K. and Sharma, N. K.,  Bianchi type - II  Dark Energy Model in f(R,T) gravity, International Journal of Theoretical Physics, 53, 1424 (2014).

[29]  Sharma, N. K. and  Singh, J. K.,  Bianchi type - II  string cosmological model with magnetic field  in f(R,T) gravity, International Journal of Theoretical Physics, 53, 2912 (2014).

[30]  Sharma, N. K. and  Singh, J. K.,  Bianchi type - II  string cosmological model with magnetic field  in  scale covariant theory of  gravitation, International Journal of Theoretical Physics, 53, 4132 (2014).

[31] Singh, J. K. and  Rani, S.,    Bianchi type -III cosmological models in Lyra’s Geometry in the presence of massive scalar field, International Journal of Theoretical Physics, 54, 545  (2015).

[32] Sharma, N. K. and  Singh, J. K.,  Bianchi type - II  string cosmological model with magnetic field in Scalar-Tensor Theory of Gravitation,  International Journal of Theoretical Physics, 54, 727  (2015).

[33] Singh, J. K. and Rani, S., Modified Chaplygin Gas cosmology with statefinder diagnostic in lyra geometry, Applied Mathematics and Computation, 259, 187 (2015).

[34] Sharma, N. K. and Singh, J. K., Some Exact Solutions of Bianchi Type-II String Cosmological Models with Magnetic Field in Brans-Dicke Theory of Gravitation, International Journal of Theoretical Physics, 54, 1633  (2015).

[35] Rani, S., Singh, J. K. and Sharma, N. K., Bianchi type-III magnetized string  cosmological models for perfect fluid distribution in  f(R,T) Gravity, International Journal of Theoretical Physics, 54, 1698  (2015).

[36] Rani, S.,  Altaibayeva, A., Shahalam, M., Singh, J. K. and Myrzakulov, R., Constraints on cosmological parameters in power-law cosmology, Journal of Cosmology and Astroparticle Physics, 03, 031  (2015), arXiv: 1404.6522v1 [gr-qc].   

[37] Singh, J. K. and Rani, S., Bianchi type-I cosmological model with null radiation Flow, International Journal of Theoretical Physics, 54, 3430 (2015).

[38] Singh, J. K., Sharma, N. K. and Beesham, A., Modified Chaplygin gas cosmology with observational constrains, Applied Mathematics and Computation, 270, 567 (2015).

[39] Kumar, H. and Singh, J. K., The aging problem of twins in Ellipsoidal Coordinates, Modern Physics Letters A, 30, 1550168 (2015).

[40] Singh, J. K. and Rani, S., Magnetized emergent universe with null radiation flow.  International Journal of Theoretical Physics, 55, 232 (2016).

[41] Singh, J. K. and Rani, S., The Bianchi type-V Dark Energy Cosmology in Self Interacting Brans Dicke Theory of Gravity, arXiv:1601.01265 [gr-qc] (2016).

[42] Singh, J. K., Sharma, N. K. and Beesham, A., A Bianchi type-II dark energy cosmology with decaying -term in Brans-Dicke theory of gravity, Journal of Physics and Mathematics, Theoretical and Mathematical Physics 193, 1866 (2017).

[43] Singh, J. K., Nagpal, R. and S. K. J. Pacif,  Statefinder diagnostic for modified Chaplygin gas cosmology in f(R,T) gravity with particle creation, International Journal of Geometric Methods in Modern Physics,  15, 1850049 (2018). doi.org/10.1142/S0219887818500494

[44] Nagpal, R.,  Singh, J. K.  and  Aygun, S.,  FLRW cosmological models with quark and strange quark matters in f(R,T) gravity,  Astrophysics and Space Science 363, 114 (2018). 

[45] Singh, J. K., Bamba, K., Nagpal, R. and S. K. J. Pacif,  Bouncing cosmology in f(R,T)  gravity,  Physical Review  D  97, 123536 (2018). doi.org/10.1103/PhysRevD.97.123536

[46] Nagpal, R., S. K. J. Pacif,  Singh, J. K., Bamba, K. and Beesham, A.,  Analysis with observational constraints in Lambda-cosmology in f(R,T)  gravity,  European Physical Journal C 78,  946 (2018),  DOI: 10.1140/epjc/s10052-018-6403-y

[47] Nagpal, R., Singh, J. K., Beesham, A. and Shabani, H., Cosmological aspects of a hyperbolic solution in f(R,T) gravity, Annals of Physics 405,  234 (2019), https://doi.org/10.1016/j.aop.2019.03.015, arXiv:1903.08562v1 [gr-qc] (2019).

(b) Papers in Conference Proceedings

[48] Singh, J.  K., Singh, C. P. and Shri Ram, Totally Anisotropic Bianchi type- II Cosmological Models in Lyra’s Geometry, Proceedings of Mathematical Society (B.H.U.), 11, 83-88 (1995), India.

(c) Papers Communicated for Publication

[49] Singh, J. K., Nagpal, R., FLRW cosmology with a specific scalar field differential equation.
 
(d) Papers Presented/Attended in Conferences

[50] Singh, J. K. and Shri Ram, A Class of New Bianchi I Perfect Fluid Space-Times, Symposium on the Early Universe, organized at I.I.T., Madras during Dec. 20-22, 1994.

[51] Singh, J. K., Singh, C. P. and Shri Ram, Totally Anisotropic Bianchi type- II Cosmological Models in Lyra’s Geometry, 11th Annual Conference of mathematical society (B.H.U.), organized at Dept. of Mathematics, B.H.U., Varanasi-221 005 during Dec. 22-23, 1995.

[52] Singh, J. K., Some Exact Solutions of String Cosmological Models in Bianchi type- V Space - Time, Joint 9th National Conference of the Vijnana Parishad of India on Applied and Industrial Mathematics and