Speaker
Prof.
George Leontaris
(University of Ioannina - Greece)
Description
The implications of perturbative string loop corrections on the moduli stabilisation problem and de Sitter vacua are investigated within the framework of type IIB string theory. In particular, the role of one-loop logarithmic corrections arising from a configuration of intersecting D7-brane stacks and a localised Einstein-Hilbert term descending from the ten-dimensional string action are examined. It turns out that such contributions are capable of generating a minimum of the potential along the volume modulus. It is further shown how de Sitter vacua are ensured when D-terms associated with the universal abelian factors of D7 brane stacks are taken into account.
