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A Cosmological Constant Damping Scenario

Victor Massart
Université de Montréal
Résumé: 

The cosmological constant and the discrepancy between its observed value and its theoretical estimate may be the worst prediction in the history of physics. In this talk, I will present a scalar-tensor scenario that can dynamically damp the cosmological constant and provide a viable solution to this fine-tuning problem. I will show that the effect of this model on the cosmological evolution is indistinguishable from the one predicted by general relativity and satisfies the fifth force constraint.

Date: 
Jeudi, 8 Avril, 2021 - 11:00
Lieu de Séminaire: 
Zoom:https://umontreal.zoom.us/j/98209542004?pwd=RkhjMlNaWlVxdlVsdmIrNUc3aGtkUT09 Meeting ID: 982 0954 2004 Passcode: 215263
Café et biscuits: 
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