Research Papers (JVN)
Permanent URI for this collectionhttp://localhost:4000/handle/11007/400
Browse
12 results
Search Results
Item Electrodynamics and cosmology(MIT, Press, 1974-01-11) Narlikar, J. V.Item Quantization of wheeler-feynman electrodynamics(Nature Publishing Group, 1970-03-28) Hoyle, F.; Narlikar, J. V.Item Biscalar and bivector green's functions in de sitter space time(National academy, 1970-03-15) Narlikar, J. V.Biscalar and bivector Green's functions of wave equations are calculated explicitly in de Sitter space time. The calculation is performed by considering the electromagnetic field generated by the spontaneous creation of an electric charge.Item Electrodynamics of direct interparticle action I : The quantum mechanical response of the universe(Academic Press, 1969-03-10) Hoyle, F.; Narlikar, J. V.The present paper is the first of a series that seeks to obtain results in agreement with experience from a completely time-symmetric electromagnetic theory-i.e. which does not permit an ad hoc restriction to retarded solutions of time-symmetric equations. It is remarkable that the development of a wholly time-symmetric theory must be along lines entirely different from the usual electrodynamics. While a first quantisation of the particles can readily be carried out, there can be no separate quantisation of the field, since the field is wholly determined by the particles. This raises the question of how practical results that have hitherto been thought to arise from field quantisation can be obtained. The most immediate problem of this kind concerns the spontaneous transitions of atoms. Much of the present paper is directed toward showing that this problem can indeed be solved without the need for field quantisation. Although this question might appear simple compared to other issues in quantum e1ectrodynamics-e.g. vacuum polarisation-it is not trivial in its implication, for the establishment of one such case provides a critical precedent. The path integral method of first quantisation is used to demonstrate that provided the Universe is a perfect absorber along the future light cone the usual formulae for level shifts and for spontaneous transitions can be obtained in a steady-state model of the Universe, but not in open Friedmann models.Item Cosmology and quantum electrodynamics(Nature Publishing Group, 1969-06-14) Hoyle, F.; Narlikar, J. V.Item Electrodynamics of direct interparticle action II : Relativistic treatment of radiative processes(Elsevier Science Publishers, 1971-01-21) Hoyle, F.; Narlikar, J. V.Item Time asymmetry in electrodynamics and cosmology(-, 1970-03-10) Narlikar, J. V.The concept of the barrow of time' is discussed in relation to thermodynamics, electrodynamics and cosmology Time symmetric electrodynamics, the absorber theory of radiation and quantum transitions receive attention to develop a working theory applicable to a universe with a perfect future absorber and an imperfect past absorber, such as the steady state cosmological model. It is stated that the approach adopted herein establishes a strong connection between the electrodynamic and cosmological arrows of time, and points a way towards linking these arrows with the thermodynamic one.Item Cosmology and electrodynamics(Nature Publishing Group, 1968-11-30) Hoyle, F.; Narlikar, J. V.Item Cosmology and quantum electrodynamics(Nature Publishing Group, 1968-07-27) Hoyle, F.; Narlikar, J. V.Item On the general correspondence between field theories and the theories of direct interparticle action(Cambridge University Press, 1968-01-10) Narlikar, J. V.It is well known that classical electrodynamics can be described both as a field theory and as a theory of direct interparticle action. In the present paper it is shown that, provided certain general conditions are satisfied, fields of arbitrary spin have their counterparts in 'direct particle fields'. This correspondence between the two formalisms is established in the Riemannian space-time used for general relativity.