Bounce Scenarios in Cosmology

Bounce Scenarios in Cosmology

 

 

Monday Jun 26, 2017
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Monday Jun 26, 2017
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I will explain how cosmological dynamics emerge from the hydrodynamics of isotropic group field theory condensate states in the Gross-Pitaevskii approximation. The correct Friedmann equations are recovered in the classical limit for some choices of the parameters in the action for the group field theory, and quantum gravity corrections arise in the high-curvature regime causing a bounce which generically resolves the big-bang and big-crunch singularities.

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Monday Jun 26, 2017

I will review various approaches to bouncing cosmologies and will discuss challenges which the different approaches face.

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Monday Jun 26, 2017
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I discuss potentially observable signatures of scalar and tensor decaying modes, which do not exist in inflation, and could be a probe of a bouncing universe.

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Monday Jun 26, 2017
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There is a huge body of work in Loop Quantum Cosmology comprising of several thousand journal articles. I will provide an overview of conclusions, focusing on the difficult conceptual and mathematical issues that accompany the notion of a bounce and opening the way for phenomenological implications that will be discussed by Ivan Agullo.

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Monday Jun 26, 2017
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