2,538 research outputs found
Dilaton Quantum Cosmology with a Schrodinger-like equation
Full text linkA quantum cosmological model with radiation and a dilaton scalar field is
analysed. The Wheeler-deWitt equation in the mini-superspace induces a
Schr\"odinger equation, which can be solved. An explicit wavepacket is
constructed for a particular choice of the ordering factor. A consistent
solution is possible only when the scalar field is a phantom field. Moreover,
although the wavepacket is time dependent, a Bohmian analysis allows to extract
a bouncing behaviour for the scale factor.Comment: 14 pages, 3 figures in eps format. Minors corrections, new figure
Viabilidade de controle do pulgão-verde Schizaphis graminum (Rondani, 1852) (Homoptera: Aphididae) atraves de cultivares resistentes e do predador Doru luteipes (Scudder, 1876) (Dermaptera: forticulidae).
Get PDF
- …
