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Mark Trodden (U Penn)

Date: Tue. March 28th, 2023, 11:30 am-12:30 pm
Location: Foldy Room, Rockefeller 221

Coupled Early Dark Energy
I will describe how some of the fine-tuning problems of the early dark energy solution to the Hubble tension can be addressed using couplings to other fields already present in cosmology. I will discuss the formulation, the cosmology, and the constraints on such models, arising from both observational and theoretical considerations. I will also address some very recent claims about the viability of such approaches.
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