Great loss. My first paper was based on the work he did in 1993 showing that black strings and branes are unstable [Gregory–Laflamme instability] Now, having moved to quantum computing, his work is even more relevant especially KLM protocol and Knill-Laflamme QEC conditions.

Fascinating article by Feynman (1987). He discusses three issues in the article: 1) sensitivity, 2) extensivity, and 3) computability.

In 1956, it was found for the first time that there are fundamental interactions in nature (weak interactions) that violate parity symmetry (left and right are not alike). Curiously enough, it was only today that I found out that Dirac had this sentence in his July 1949 RMP article.

Long live Verschränkung Great finish to the talk by John @preskill.bsky.social #APSSummit25

At the #APS today.

Wishing everyone a very happy and prosperous new year 2025 🎉 Facts about 2025: 1) It is square of 45 2) It is product of two squares: 9² x 5² = 2025 3) It is the sum of three squares: 40²+ 20²+5²= 2025 4) It is the sum of cubes of natural numbers from 1 to 9: 1³+2³+3³+4³+5³+6³+7³+8³+9³= 2025

First page of the book - "Notes on quantum mechanics" by E. Fermi published by Chicago U Press. Thanks to @thriftbooks.bsky.social for a great deal :-)

100 years ago, in November 1924, de Broglie became the first physicist to deduce that all matter has wave properties. A year later, in 1925, he developed the first hidden-variable theory (pilot-wave theory), which inspired Schrodinger to write down his famous equation. This theory eventually 1/2

I am very proud of our new paper on simulations of scattering processes in (1+1)-dimensional quantum field theory. All the hard work was done by my co-authors Raghav Jha, Ash Milsted, Dominik Neuenfeld, and Pedro Vieira. arxiv.org/abs/2411.13645

Happy to announce that our paper on real-time scattering in Ising field theory using tensor networks is now on arXiv. Great working and learning with Ashley Milsted, Dominik Neuenfeld, John Preskill (@preskill.bsky.social), and Pedro Vieira. We had great fun! arxiv.org/abs/2411.13645