Abstract: In quantum theory, all particles in the universe are either bosons (named for S.N. Bose, 1924) or fermions (named for E. Fermi, 1926). This fact is crucial to our understanding of the flow of electrons in all materials, including those found in smartphones. In recent decades, it has become clear that certain many-particle systems with complex quantum entanglement can exhibit emergent particles called `anyons’, which are neither bosons nor fermions. Even more intriguing are systems, such as the Sachdev-Ye-Kitaev model, which don’t exhibit any particle-like excitations at all. I will describe how these remarkable many-particle systems are playing a role in our understanding of modern quantum materials (such as the high temperature superconductors), in the design of fault-tolerant quantum devices, and in the theory of black holes.

Title: 100 years of many-particle quantum mechanics: from Bose and Fermi to quantum materials and black holes

Speaker: Subir Sachdev

Date and time: October 31, 2025   19h30

Venue: Auditorium of IFT-UNESP

IFT-Unesp (Rua Jornalista Aloysio Biondi, 120 – Bloco II – Barra Funda – São Paulo/SP)