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تسجيل مستخدم جديدQuantum Gravity and Cosmology: an intimate interplay
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تأليف
Mairi Sakellariadou
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I will briefly discuss three cosmological models built upon three distinct quantum gravity proposals. I will first highlight the cosmological role of a vector field in the framework of a string/brane cosmological model. I will then present the resolution of the big bang singularity and the occurrence of an early era of accelerated expansion of a geometric origin, in the framework of group field theory condensate cosmology. I will then summarise results from an extended gravitational model based on non-commutative spectral geometry, a model that offers a purely geometric explanation for the standard model of particle physics.
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We briefly discuss new models of an `affine theory of gravity in multidimensional space-times with symmetric connections. We use and generalize Einsteins proposal to specify the space-time geometry by use of the Hamilton principle to determine the co
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This Thesis is devoted to the study of Metric-Affine Theories of Gravity and Applications to Cosmology. The thesis is organized as follows. In the first Chapter we define the various geometrical quantities that characterize a non-Riemannian geometry.
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