For 48 years, physicists largely ignored a theory of gravity that was riddled with ghosts, nonsensical-seeming particles that have a negative probability of arising. Recent work by John Donoghue and Gabriel Menezes has helped reinvigorate the theory. www.quantamagazine.org/old-ghost-th...

This is a good article about a subtle topic in quantum gravity.

This is my talk at the Campagna conference www.pifp2025.it/home

This was quite an interesting and well organized conference.

I haven’t seen it mentioned here yet, but we have gotten word from CERN that both Mary K Gaillard and Jonathan Rosner have died. Their paper with Ben Lee was the entry to charm physics for so many of us, but each had separately a large impact on particle physics.

Great news! Gauge Theory of Elementary Particle Physics by Ta-Pei Cheng and Ling-Fong Li (Oxford) is now OPEN ACCESS! 🎉 You can read and download it for free using the PDF link below. 📖✨ fdslive.oup.com/www.oup.com/...

I don't mean to keep harping on my books, but I just noticed that my QFT book with Lorenzo Sorbo "A Prelude to Quantum Field Theory" is presently discounted to only $22.37 on the Princeton University Press website. Seems to be a good price. press.princeton.edu/books/ebook/...

This was posted due to the news that Gene Golowich has passed away. A sad event an an end of an era for many of us.

Thanks for highlighting this. I had felt that it was mostly forgotten. Also thanks for doing these posts throughout December - I have enjoyed them and saved many for further study.

My new paper giving reasons why the cosmological constant and Newton's constant should not be treated as running parameters in physical processes. arxiv.org/abs/2412.08773

Astro/cosmo folks: Does anyone have an informed opinion on this work which says that the recent DESI result on running dark energy depends heavily on a couple of outlier points. The authors give the appropriate caveats, but it seems important. arxiv.org/abs/2412.01740

This should be good. The first few chapters can be previewed on the CUP site cup.org/3XTHKLC

I am moving here from Twitter. That site is too full of misinformation and unhappiness. It is part of the problem and hopefully moving here can recreate a portion of the Science Twitter experience.