R P Saxena
Articles written in Pramana – Journal of Physics
Volume 8 Issue 2 February 1977 pp 174-183 Nuclear And Particle Physics
The measurements of the Δ
Volume 13 Issue 1 July 1979 pp 9-14 Quantum Mechanics
It is shown that if the ‘mean excitation energy’ assumption is introduced in the Brillouin-Wigner perturbation series, then the resulting series can be exactly summed. The implications of the result for calculating energy shift and for constructing trial functions are examined with special reference to the ground state of the helium atom.
Volume 31 Issue 5 November 1988 pp 347-356 Quantum Physics
In this paper we study a certain class of generalized perturbation problem for the isotropic three dimensional harmonic oscillator, for
Volume 34 Issue 5 May 1990 pp 415-422
The compactification of 10-dimensional supergravity, coupled to super Yang-Mills theory, to curved 4-dimensional spacetimes is investigated. The requirement of unbroken supersymmetry leads to a set of consistency conditions. These are fairly restrictive, but nevertheless permit some nontrivial solutions, including the Milne universe. More general time-dependent metrics are also not ruled out.
Volume 53 Issue 6 December 1999 pp 1121-1123 Super-String Motivated Cosomological Models
The dynamics of a string near a Kaluza-Klein black hole are studied. Solutions to the geodesic equations are obtained using the world sheet velocity of light as an expansion parameter. For a string falling into a magnetically charged black hole, it is shown that the compact dimension decreases with the world-sheet coordinate
Volume 97, 2023
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