Dynamical dark energy in 0'B braneworlds

Abril 24, 2025
De 12:00pm hasta 1:00pm

IFT Seminar Room/Red Room

Specialist level
Speaker: 
Salvatore Raucci
Institution: 
IFT UAM/CSIC
Location&Place: 

IFT Seminar Room/Red Room

Abstract: 

After the usual paper discussion, Salvatore Raucci will give a talk on the paper "Dynamical dark energy in 0'B braneworlds" (2502.20438).

"We build a novel realization of dark bubble cosmology in non-supersymmetric string theory. Among the simplest models in ten dimensions, the type 0'B orientifold is the unique option which yields a scale-separated construction. The resulting setting produces a logarithmically varying dynamical dark energy, reflecting its holographic counterpart in terms of running gauge couplings. We analyze in detail the phenomenological consequences of the model for particle physics, inflation and late-time cosmology. We find that, although particle physics may be consistently realized, neither early-time nor late-time are observationally viable."