The CWKB approach to non-reflecting potential and cosmological implications
| dc.creator | Biswas, S. | |
| dc.creator | Chowdhury, I. | |
| dc.date | 2002-07-02 | |
| dc.date.accessioned | 2026-07-07T11:08:39Z | |
| dc.date.available | 2026-07-07T11:08:39Z | |
| dc.description | We discuss the method of calculating the reflection coefficient using complex trajectory WKB (CWKB) approximation. This enables us to give an interpretation of non-reflecting nature of the potential under certain conditions and clarify some points, reported incorrectly elsewhere [vs:ejp] for the potential $U(x)=-U_0cosh^2(x/a)$. We show that the repeated reflectios between the turning points are essential, which most authors overlooked, in obtaining the non-reflecting c ondition. We find that the considered repeated reflection paths are in conformity with Bogolubov transformation technique. We discuss the implications of the results when applied to the particle production scenario, considering $x$ as a time variable and also stress the cosmological implications of the result with reference to radiation domonated and de Sitter spacetime. | |
| dc.description | 9 pages, latex | |
| dc.identifier | https://arxiv.org/abs/gr-qc/0207015 | |
| dc.identifier | http://arxiv.org/abs/gr-qc/0207015 | |
| dc.identifier | Pramana62:1231-1240,2004 | |
| dc.identifier | doi:10.1007/BF02704436 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/190207 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | The CWKB approach to non-reflecting potential and cosmological implications | |
| dc.type | text |