أعرض تسجيلة المادة بشكل مبسط

dc.creator Pinto-Neto Nelson
dc.date 2000
dc.date.accessioned 2013-05-30T00:00:09Z
dc.date.available 2013-05-30T00:00:09Z
dc.date.issued 2013-05-30
dc.identifier http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332000000200014
dc.identifier http://www.doaj.org/doaj?func=openurl&genre=article&issn=01039733&date=2000&volume=30&issue=2&spage=330
dc.identifier.uri http://koha.mediu.edu.my:8181/jspui/handle/123456789/2945
dc.description We argue that the Copenhagen interpretation of quantum mechanics cannot be applied to quantum cosmology. Among the alternative interpretations, we choose to apply the Bohm-de Broglie interpretation of quantum mechanics to canonical quantum cosmology. For minisuperspace models, we show that there is no problem of time in this interpretation, and that quantum effects can avoid the initial singularity, create inflation and isotropize the Universe. For the general case, it is shown that, irrespective of any regularization or choice of factor ordering of the Wheeler-DeWitt equation, the unique relevant quantum effect which does not break spacetime is the change of its signature from lorentzian to euclidean. The other quantum effects are either trivial or break the four-geometry of spacetime. A Bohm-de Broglie picture of a quantum geometrodynamics is constructed, which allows the investigation of these latter structures.
dc.publisher Sociedade Brasileira de Física
dc.source Brazilian Journal of Physics
dc.title Quantum cosmology: how to interpret and obtain results


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أعرض تسجيلة المادة بشكل مبسط