ICTP/SISSA Joint Colloquium

Subir Sachdev of Harvard University to speak on 19 June
ICTP/SISSA Joint Colloquium



ICTP will hold a joint ICTP-SISSA Colloquium on "Universal theory of strange metals" by Subir Sachdev, Herchel Smith Professor of Physics at Harvard University, and Miguel Virasoro Visiting International Chair at ICTP. The Colloquium will take place in the SISSA Auditorium located inside the ICTP campus, on Wednesday 19 June at 15:00 CEST and will also be livestreamed on ICTP's YouTube channel. 

Sachdev has made extensive contributions to the theory of the diverse varieties of quantum matter, and of their behavior near quantum phase transitions. Many of these contributions have been linked to experiments, especially to the rich phase diagrams of the copper-oxide high temperature superconductors. Sachdev's research has also exposed remarkable connections between the nature of multi-particle quantum entanglement in certain laboratory materials, and the quantum entanglement in black holes, and these connections have led to new insights on the entropy and radiation of black holes.

Sachdev has been elected to national academies of science in the United States and India, and to the Royal Society in the U.K. He is a recipient of several awards, including the Dirac Medal from ICTP, and the Lars Onsager Prize from the American Physical Society.

In this talk, Sachdev will focus on strange metals. The “strange metal” is a state of quantum matter, ubiquitous in modern materials, present above the critical temperature of higher temperature superconductors. He will present a universal theory of strange metals, building on the theory of quantum phase transitions in disordered metals. Such transitions involve changes in the shape or volume of the Fermi surface. Random spatial fluctuations in the local position of the quantum critical point, due to impurities, are a key ingredient. The theory uses insights from the solvable Sachdev-Ye-Kitaev model and matches numerous observations.

The talk will be followed by a question-and-answer session and light refreshments will be served shortly after. For more information, please see

Publishing Date