Dynamical dark energy in 0'B braneworlds

Giorno 15/05/2025, con inizio alle ore 12:00, presso l'Aula M del DFA, su invito del Prof. Marco Scalisi, il Dr Joaquin Masias (MPI, Garching, Germany) terrà un seminario dal titolo Dynamical dark energy in 0'B braneworlds.

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Abstract. I will present 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.

Bio. Joaquin Masias completed his undergraduate studies in Pontifical Catholic University of Peru and obtained a master degree in theoretical physics at the Ludwig Maximilian University (LMU) of Munich. Today he is a doctoral researcher in the string theory group led by Prof. Dieter Lüst at the Max Planck Institute for Physics in Garching (Germany). His work has been focusing on the interplay between string theory, cosmology and the swampland program.