Entropy constraints on effective field theory

開始日時 2022/05/17 11:00
終了日時 2022/05/17 12:00
講演者 Dr. Daiki Ueda (Peking University)
会場 Online (Zoom)
連絡先 Masashi Aiko / maiko-AT-post.kek.jp
言語 English


Relative entropy is a non-negative quantity and depicts a difference between two probability distributions. In this talk, I explain constraints on perturbative corrections to the Euclidean effective action by the relative entropy. I show that the relative entropy can yield the constraints on some effective field theories generated by a class of UV theories with a specific sign of interactions between heavy and light degrees of freedom. For such a class of theories, I show that the interactions increase thermodynamic entropy at fixed energy and charge, which is intimately connected with the extremality relations of black holes exhibiting Weak-Gravity-Conjecture.