Research Publications

Research Publications (in Indexed/ Peer-Reviewed Journals):

1. Usha Kulshreshtha, Daya Shankar Kulshreshtha and James P. Vary, ``Instant-Form and Light-Front Quantization of Field Theories``, Few Body Systems (2008)  -  in press.

2. Sanjeev Kumar, Usha Kulshreshtha and Daya Shankar  Kulshreshtha, ``Boson Stars and B(4 pages)

3. Sanjeev Kumar, Usha Kulshreshtha, Daya Shankar  Kulshreshtha,  Sarah Kahlen and Jutta Kunz, ``Some New Results on Charged Compact Boson Stars``, Phys. Lett. B772, 615-620 (2017) (6 pages).

4. Sanjeev Kumar, Usha Kulshreshtha and Daya Shankar  Kulshreshtha, ``Charged Compact Boson Stars and Shells in the Presence of a Cosmological Constant'', Physical Review D94, No. 12  (2016) 125023 (19 Pages). 

5.  Daya Shankar Kulshreshtha, Usha Kulshreshtha and James P. Vary, ``Light-Front Quantization of the Restricted Gauge Theory of QCD_{2}'',  Few Body Systems, Vol. 57 (2016) No. 8, 669-673 (5 pages). 

6.  Usha Kulshreshtha, Daya Shankar Kulshreshtha and James P. Vary, ``Light-Front Quantization of the Vector Schwinger Model with a Photon Mass Term in

 Faddeevian Regularization'', Few Body Systems, Vol. 57 (2016) No. 7, 573-577 (5 pages). 

7. Sanjeev Kumar, Usha Kulshreshtha and Daya Shankar  Kulshreshtha, ``New Results on Charged Compact Boson Stars'', Phys. Rev. D93 (Rapid), No. 10 (2016) 101501 (5 pages) (arXiv: hep-th/1605.02925).

8. Usha Kulshreshtha, Daya Shankar Kulshreshtha and James P. Vary, ``Light-Front Hamiltonian, Path Integral and BRST Quantization of the Vector Schwinger Model with a Photon Mass Term in the Faddeevian Regularization'', International J. Theor. Phys. Vol. 55, (2016) (No. 1) 338-360 ( 23 pages). 

9. D. S. Kulshreshtha, " Quantization of the Restricted Gauge Theory of $QCD_{2}$", Few Body Systems, Vol. 56 (2015) (No. 6-9), 565-569. 

10. Usha Kulshreshtha, D. S. Kulshreshtha and James Vary, "Vector Schwinger Model with a Photon Mass Term with Faddeevian Regularization, Few Body Systems, Vol. 56 (2015) 6-9, 559-563. 

11. Sanjeev Kumar, Usha Kulshreshtha and Daya Shankar  Kulshreshtha, ``Boson Stars in a Theory of Complex Scalar Field Coupled to Gravity'', General Relativity and Gravitation Vol. 47 (2015) 7, 76.

12. Usha Kulshreshtha, D. S. Kulshreshtha and James Vary, ``Hamiltonian, Path Integral and BRST Formulations of Large N Scalar $QCD_{2}$ on the Light-Front and Spontaneous Symmetry Breaking'', --  European J. Phys. C75 (2015) 4, 174.

13. Sanjeev Kumar, Usha Kulshreshtha and D. S. Kulshreshtha, "Boson Stars in a Theory of Complex Scalar Fields coupled to U(1) Gauge Field and Gravity," Classical and quantum Gravity Vol. 31, 167001 (9 pp.), (2014). 

14. Usha Kulshreshtha, Daya Shankar Kulshreshtha, James P. Vary and  Lalit K. Sharma, ``Light-Front BRST Quantization of Vector Schwinger Model with a Photon Mass Term'', International J. Theor. Phys. Vol. 53 (Issue No. 12), 4230-4243 (2014).   

15. Daya Shankar Kulshreshtha (Editor), Supriya K. Kar (editor), Vinod Nautiyal (editor), Usha Kulshreshtha (editor), Swarnendu Sarkar (editor), ``Proceedings of International Conference on Light-Cone Physics: Hadronic and particle Physics, New Delhi, India, December 10-15, 2012'', Nuclear Physics-B (Proceedings Supplement), Volume 251-252, pp. 1-174 (2014).

16. Usha Kulshreshtha and Daya Shankar Kulshreshtha, ``Instant-Form and Light-Front Hamiltonian and Path Integral Formulations of the Conformally Gauge-Fixed Polyakov D1-Brane Action in the Presence of a Scalar Axion Field and an U(1) Gauge Field'', J. Mod. Phys. (Special Issue on HEP, April-2013) Vol. 4, 57-69  (2013).

17. Usha Kulshreshtha, Daya Shankar Kulshreshtha and James P. Vary, ``Light-Front Hamiltonian, Path Integral and BRST Formulations of the Chern-Simons-Higgs Theory in the Broken Symmetry Phase'', J. Mod. Phys. (Special Issue on HEP, April-2013) Vol. 4, 38-48 (2013).

18. D. S. Kulshreshtha, "Light-Front Quantization of Conformally Gauge-Fixed Polyakov D1-Brane Action in the presence of a Scalar Axion Field and an U(1) Gauge Field", Few Body Systems 52, 463-467 (2012).

19. Usha Kulshreshtha, D. S. Kulshreshtha and J. P. Vary, "Light-Front Hamiltonian and Path Integral Formulations of Large N Scalar QCD_{2}", Physics  Letters B 708 (No. 1-2), 195-198 (2012).

20. Usha Kulshreshtha and D. S. Kulshreshtha, "String gauge symmetries in the conformally gauge-fixed Polyakov D1 brane action in the presence of background gauge fields", J.  Mod.  Phys. Vol. 3 (No. 1), 110-115 (2012).

21. U. Kulshreshtha and D. S. Kulshreshtha, 2011, "Light-Front Hamiltonian and path integral formulations of the conformally gauge-fixed Polyakov D1  brane action in the presence of a scalar dilaton field", J. Mod. Physics,  Vol. 2 (No. 8), 826-833 (2011).

22. U. Kulshreshtha and D. S. Kulshreshtha, 2011, “Light-Front Hamiltonian and path integral quantization of the conformally guage-fixed Polyakov D1 brane action”, J. Mod. Phys. Vol.2, (No.5, June 2011), 335-340 (2011).

23. U. Kulshreshtha, D. S. Kulshreshtha, and J. P. Vary, 2010, “Light-Front Hamiltonian, path integral and BRST formulations of the Chern-Simons theory under appropriate gauge-fixing”, J. Mod. Phys. Vol.1. Issue 6. 85 - 392, (2010).

24. U. Kulshreshtha, D. S. Kulshreshtha, and J. P. Vary, 2010, “Light-Front Hamiltonian, path integral and BRST formulations of the Chern-Simons-Higgs theory under appropriate gauge-fixing”, Physica Scripta 82: 055101 (Sweden), (2010).

25. U. Kulshreshtha, D. S. Kulshreshtha, H. J. W. M ̈ller-Kirsten and J. P. Vary, 2009, “Hamiltonian, path integral and BRST formulations of the Chern-Simons-Higgs theory under appropriate gauge-fixing”, Physica Scripta 79: 045001 (Sweden).

26.. U. Kulshreshtha and D. S. Kulshreshtha, 2009, “Hamiltonian and path integral quantization of the conformally guage-fixed Polyakov D1 brane action in the presence of a scalar dilaton field”, Int. J. Theor. Phys. 48, 937-944 (USA).

27. U. Kulshreshtha and D. S. Kulshreshtha, 2008, “Hamiltonian, path integral and BRST formulations of the Chern-Simons theory under appropriate gauge-fixing”, Canadian J. Phys. 86, 401-407 (Canada).

28. U. Kulshreshtha and D. S. Kulshreshtha, 2007, “Gauge-invariant reformulation of the vector Schwinger model with a photon mass term and its Hamiltonian, path integral and BRST formulations”, Int. J. Mod. Phys. A22, 6183-6201 (Singapoore).

29. U. Kulshreshtha and D. S. Kulshreshtha, 2005, “Hamiltonian and path integral formulations of the Born-Infeld Nambu-Goto D1-brane action with and without a dilation field under gauge-fixing”, Int. J. Theor. Phys. 44, 587 (USA).

30. U. Kulshreshtha and D. S. Kulshreshtha, 2004, “Hamiltonian and path integral formulations of the Nambu-Goto D1-brane action with and without a dilaton field under gauge-fixing”, Int. J. Theor. Phys. 43, 2355 (USA).

31. U. Kulshreshtha and D. S. Kulshreshtha, 2004, “Instant-form Hamiltonian and Becchi-Rouet-Stora-Tyutin formulations of the Nielsen-Olesen model in the broken symmetry phase”, Can. J. Phys. 82, 843 (USA).

32. U. Kulshreshtha and D. S. Kulshreshtha, 2004, “The front-form Hamiltonian and BRST formulations Of the Nielsen-Olesen model in the broken symmetry phase”, Can. J. Phys. 82, 569 (USA).

33. U. Kulshreshtha and D. S. Kulshreshtha, 2003, “Hamiltonian and path integral formulations of the Dirac-Born-Infeld-Nambu-Goto D1 brane action with and without a dilation field under gauge-fixing”, Eur. Phys. J. C29, 453 (Europe).

34. U. Kulshreshtha and D. S. Kulshreshtha, 2003, “Conformally gauge-fixed Polyakov D1-brane action in the presence of a 2-form gauge field: the instant-form and front-form Hamiltonian and path integral formulations”, Phys. Lett. B555, 255 (Netherlands).

35. U. Kulshreshtha and D. S. Kulshreshtha, 2002, “Front-form Hamiltonian, path integral, and BRST formulations of the Siegel action”, Int. J. Theor. Phys. 41, 2395 (USA).

36. U. Kulshreshtha and D. S. Kulshreshtha, 2002, “Front-form Hamiltonian, path integral, and BRST formulations of the nonlinear sigma model”, Int. J. Theor. Phys. 41, 1941 (USA).

37. U. Kulshreshtha and D. S. Kulshreshtha, 2002, “The front-form Hamiltonian and BRST formulations of the Jackiw-Rajaraman chiral Schwinger model”, Can. J. Phys. 80, 791 (Canada).

38. U. Kulshreshtha and D. S. Kulshreshtha, 2002, “Light-front Hamiltonian and BRST formulations of a two-dimensional Abelian Higgs model in the broken symmetry phase”, Int. J. Theor. Phys. 41, 251 (USA).

39. U. Kulshreshtha, D. S. Kulshreshtha and H. J. W. Muller-Kirsten, 1999, “BRST quantization of the Siegel action”, Int. J. Theor. Phys. 38, 1399 (USA).

40. U. Kulshreshtha and D. S. Kulshreshtha, 1998, “Front-form Hamiltonian and BRST formulations of the Schwinger model”, Int. J. Theor. Phys. 37, 2539 (USA).

41. U. Kulshreshtha, D. S. Kulshreshtha and H. J. W. Mueller-Kirsten, 1995, “BRST formulation of the Christ-Lee model”, Can. J. Phys. 73, 386 (Canada).

42. U. Kulshreshtha, D. S. Kulshreshtha and H. J. W. Mueller-Kirsten, 1994, “Hamiltonian and BRST formulations of a gauge-invariant chiral Schwinger model”, Can. J. Phys. 72, 639 (Canada).

43. U. Kulshreshtha, D. S. Kulshreshtha and H. J. W. Mueller-Kirsten, 1994, “BRST formulation of a gauge-invariant chiral Schwinger model”, Nuovo Cim. A107, 569 (Italy).

44. U. Kulshreshtha, D. S. Kulshreshtha and H. J. W. Mueller-Kirsten, 1994, “The gauge-invariant, gauged Floreanini-Jackiw action: Stuckelberg term, Hamiltonian and BRST formulations”, Zeit. Phys. C64, 169 (Germany).

45. U. Kulshreshtha, D. S. Kulshreshtha and H. J. W. Mueller-Kirsten, 1993, “Gauge-invariant O(N) nonlinear sigma model(s) and gauge-invariant Klein-Gordon theory: Wess-Zumino terms and Hamiltonian and BRST formulations”, Helv. Phys. Acta 66, 752 (Switzerland).

46. U. Kulshreshtha, D. S. Kulshreshtha and H. J. W. Mueller-Kirsten, 1993, “Hamiltonian and BRST formulations of the Schwinger model”, Helv. Phys. Acta 66, 743 (Switzerland).

47. U. Kulshreshtha, D. S. Kulshreshtha and H. J. W. Mueller-Kirsten, 1993, “A gauge-invariant theory of chiral bosons: Wess-Zumino term, Hamiltonian and BRST formulations”, Zeit. Phys. C60, 427 (Germany).

48. U. Kulshreshtha, D. S. Kulshreshtha and H. J. W. Mueller-Kirsten, 1993, “Hamiltonian formulation of the Siegel action in various gauges”, Phys. Rev. D47, 4634 (USA).

49. D. S. Kulshreshtha, J. Q. Liang and H. J. W. Muller-Kirsten, 1993, “Fluc-tuation equations about classical field configurations and supersymmetric quantum mechanics”, Annals Phys. 225, 191 (USA).

50. D. S. Kulshreshtha and H. J. W. Muller-Kirsten, 1992, “Faddeev-Jackiw quantization of selfdual fields”, Phys. Rev. D45, 393 (USA).

51. S. Bhatnagar, D. S. Kulshreshtha and A. N. Mitra, 1991, “How big are the decay constants f(p) of heavy-light mesons?”, Phys. Lett. B263, 485 (USA).

52. D. S. Kulshreshtha and H. J. W. Muller-Kirsten, 1991, “Quantization of systems with constraints: the Faddeev-Jackiw method versus Dirac’s method applied to superfields”, Phys. Rev. D43, 3376 (USA).

53. J. Q. Liang and D. S. Kulshreshtha, 1990, “A charged particle in the magnetic field Of a Dirac monopole line”, , Phys. Lett. A149, 1 (Neatherland).

54. D. S. Kulshreshtha, 1988, “The spectrum of b anti-c, t anti-c and t anti-b bound states in the two-step potential model”, Nuovo Cim. A99, 725 (Italy).

55. D. S. Kulshreshtha and A. N. Mitra, 1988, 1988, “Null plane formulation of Bethe-Salpeter q q q dynamics: baryon mass spectra”, Phys. Rev. D37, 1268 (USA) [Erratum-Phys. Rev. D 38, 2913 (USA)].

56. D. S. Kulshreshtha, 1985, “The fine and hyperfine structure and dipole transitions of charmonium and bottomonium in the two-step potential model”, Nuovo Cim.  A87, 25 (1985).

57. D. S. Kulshreshtha, 1985, “c anti-c and b anti-b spectroscopy in the two-step potential model”, Nuovo Cim. Lett. 42, 199 (Italy).

58. D. S. Kulshreshtha and A. N. Mitra, 1983, “Bethe-Salpeter basis for quark pair creation model: understanding of V P P, V P gamma and P gamma gamma couplings”, Phys. Rev. D28, 588 (USA).

59. D. S. Kulshreshtha, 1983, “Anticipated t anti- t states in the quark-confining two-step potential model”, Nuovo Cim. A74, 258-266 (Italy).

60. D. S. Kulshreshtha, 1983, “The form-factors of π and K mesons at large momentum transfer squared”, Lett. Nuovo Cim. Lett. 37, 275-278 (Italy).

61. D. S. Kulshreshtha, 1983, “Glueballs in the two-step potential model”, Nuovo Cim. Lett. 36, 619 (Italy).

62. D. S. Kulshreshtha and R. S. Kaushal, 1982, “Beauty mesons in the two-step potential model”, Nuovo Cim. Lett. 35, 323 (Italy).

63. D. S. Kulshreshtha, A. N. Mitra and I. Santhanam, 1982, “Strange baryon spectroscopy through Bethe-Salpeter approach under harmonic confinement”, Phys. Rev. D26, 3131 (USA).

64. D. S. Kulshreshtha and A. N. Mitra, 1982, “Bethe-Salpeter Q anti-Q dynamics under harmonic confinement”, Phys. Rev. D26, 3123 (USA).

65. D. S. Kulshreshtha and R. S. Kaushal, 1982, “Heavy mesons in a simple quark confining two-step potential model”, Phys. Rev. D26, 2331 (USA).

66. D. S. Kulshreshtha, A. N. Mitra and I. Santhanam, 1982, “Bethe-Salpeter treatment of Λ, Σ resonances under harmonic confinement”, Nuovo Cim. Lett. 34,  220 (Italy).

67. D. S. Kulshreshtha and R. S. Kaushal, 1981, “The form-factor of the K meson and the meson radii in a quark confining two-step potential model”, Phys. Lett.  B102, 185 (Neatherland).

68. R. S. Kaushal and D. S. Kulshreshtha, 1977, “Quark confinement potential and the quark-diquark model for nucleons”, Annals Phys. 108, 198 (USA).

69. R. S. Kaushal and D. S. Kulshreshtha, 1977, “Charmed mesons in the two-step potential model”, Nuovo Cim. A40, 163 (Italy).

70. R. S. Kaushal, D. S. Kulshreshtha and D. Parashar, 1977, “Quark confinement potential and meson resonances”, Nuovo Cim. A37, 55 (Italy).

71.  D. S. Kulshreshtha, 1984, “On the 13 PJ (1 triplet P wave) splittings of bottomo-nium”, Nucl. Phys. A416, 599-600 (Neatherland).

72. D. S. Kulshreshtha, 1984, “E1 and M1 transitions of bottomonium, Nucl. Phys. A416, 601-602 (Neatherland).