Instituto de Astrofísica e Ciências do Espaço

Cosmological Constant from Conformal Fluctuations of the Metric Tensor

José Marques
FCUP

Abstract
It seems clear that quantum fluctuations have to be taken seriously as they affect macroscopic observables. Conformal quantum fluctuations of the metric tensor are studied in this seminar.They lead to an extra term in the Einstein equations which can be identified with a cosmological constant. Quantum fluctuations may therefore contribute to an accelerated expansion of the universe, in accordance with newer observational data.

2010 February 10, 13:30

IA/U.Porto
Centro de Astrofísica da Universidade do Porto (Classroom)
Rua das Estrelas, 4150-762 Porto