Hi everybody, This *Friday 11th at 11:30 in Aula C* we will keep on going with the Cordas-Club. *Riccardo Borsato* will lead this time a discussion about* "Duality-invariant cosmology to all orders in alpha' ".* *Abstract:* I will review the duality-invariant cosmology to all orders in alpha' constructed by Hohm and Zwiebach in 1905.06583 and 1905.06963. I will also try to summarise the more recent developments, including the status of de Sitter solutions in this theory. These were found in the string and Einstein frames, with or without matter. I will comment on their perturbative/non-perturbative nature, and on their stability. Disclaimer: I'm not an expert, and I hope to stimulate a discussion from the audience during the journal club. *References:* *https://arxiv.org/abs/1905.06583 <https://arxiv.org/abs/1905.06583>* *https://arxiv.org/abs/1905.06963 <https://arxiv.org/abs/1905.06963>* *Covid restrictions:* The room is big and we can safely keep a distance from each other, but of course all protocols are to be respected and masks will be mandatory for all attendants. *Broadcast details* The meeting will be held in the open source platform JITSI https://meet.jit.si/CordasClub Add event to calendar [image: Apple] <https://www.addevent.com/event/Aq6873608+apple> [image: Google] <https://www.addevent.com/event/Aq6873608+google> [image: Office 365] <https://www.addevent.com/event/Aq6873608+office365> [image: Outlook] <https://www.addevent.com/event/Aq6873608+outlook> [image: Outlook.com] <https://www.addevent.com/event/Aq6873608+outlookcom> [image: Yahoo] <https://www.addevent.com/event/Aq6873608+yahoo> See you there! Javi