Hari Padmanabhan

I wrote about how quantum entanglement leaves its imprint all over the behavior of certain macroscopic objects, objects that you can see with your eyes and hold in your hands - say hello to quantum magnets! cantorsparadise.com/witnessing-qua…

"Witnessing quantum entanglement at the macroscale" by Hari Padma ift.tt/QwHUEGv

Alright, full story up. I tried to explain a bit behind why it's hard to get ultrashort pulses of light and what exactly this years' laureates did to solve the problem. scientificamerican.com/article/this-y…

Ultrafast science, let's go! One of my favorite nuggets about this field: an attosecond is to a second, what a second is to the age of the universe. We live in amazing times.

Thread - 1: Short personal story on how fear of math and bad teachers can lead to a self-fulfilling prophecy. Maybe my experience can be helpful to teenagers struggling with math. I "survived" the experience but lost valuable time

@seanmcarroll For more on the history and science of renormalization, @QuantaMagazine had a wonderful long-form piece on the topic by @walkingthedot quantamagazine.org/how-renormaliz…

Few do it better than @seanmcarroll

Check this out for a lucid description (~37:17) of ‘renormalization’ and ‘effective field theories’ - ideas with roots in condensed matter physics (good old magnetism), but with profound implications on our understanding of nature at its deepest level. open.spotify.com/episode/2jsFzT…

One of the biggest problems in condensed matter physics just got solved. A new paper in @ScienceMagazine is the first to explain the odd properties of "strange metals," which are closely related to superconductors. @aavishkar_patel @FlatironCCQ @SimonsFdn simonsfoundation.org/2023/08/17/we-…

@Noahpinion A relevant post from @AlexandruBG, original paper by @XtlStruc

OK so LK99 wasn't a big breakthrough. What ARE some of the most important confirmed recent advances in materials science?

@calebhuwm @schulzb589 @Noahpinion This is a nice study, and a neat result! As for high-temperature superconductivity, the complexity of these phases (e. g. cuprates) notwithstanding, I have to say I don’t see a direct connection to thermal expansion.

@schulzb589 @Noahpinion @haripadtweets any thoughts? could RT SC be more achievable in ~zero Tg solids as more stable atomic positions might better prevent electronic decoherence once perturbed?

A nice piece on Claude Shannon's work in this month's @NaturePhysics, you love to see the author have a bit of fun rdcu.be/diX0s

h/t to Tony Leggett (see chapter on BCS superconductivity in the textbook ‘Quantum Liquids’ for more) who has likely forgotten more about superconductivity than most of us will ever know. en.wikipedia.org/wiki/Anthony_J…

Is LK-99 superconducting? We don’t know yet, but if it is, it likely has electronic pairing mediated by something springy.

On how electrons, which usually repel each other, pair up and give rise to superconductivity. There’s a neat bit of classical physics and high school algebra at the heart of it all – a thread that connects all superconductors, from the OGs to the alleged new kids on the block. 🧵