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Statut Confirmé
Domaines hep-th
Date Vendredi 23 Mars 2018
Heure 14:00
Institut LPTENS
Salle LPTENS library
Nom de l'orateur Douglas
Prenom de l'orateur Michael
Addresse email de l'orateur
Institution de l'orateur Stony Brook
Titre Computational complexity of cosmology in string theory
Résumé Title: Computational complexity of cosmology in string theory Abstract: We describe a new approach for quantum cosmology based on computational complexity. By defining a cosmology as a space-time containing a vacuum with specified properties (for example small cosmological constant) together with rules for how time evolution will produce the vacuum, we can associate global time in a multiverse with clock time on a supercomputer which simulates it. We argue for a principle of ``limited computational complexity" governing early universe dynamics as simulated by this supercomputer, which translates to a global measure for regulating the infinities of eternal inflation. We also give various definitions of the computational complexity of a cosmology, and argue that there are only a few natural complexity classes.
Numéro de preprint arXiv 1706.06430
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