Remembering Alexei Starobinsky -- the gentle giant of cosmology Varun Sahni (Open Issues in Gravitation and Cosmology - Original Contributions, Essays and Recollections in Honor of Alexei Starobinsky) arxiv.org/abs/2505.08824

Almost 5 months strength training at the gym. I never felt stronger! 🤩 highly recommend it, especially considering how we spend hours sitting behind a desk. Way to go!

What theoretical physicists when on a break from hard work and strenuous intellectual activity 😉😘

More on theoretical physicists hard at work. 😏 This time at the Ginza book cafe. Worth a visit if you find yourself in Tokyo

Schrödinger’s cat, but it’s a banana you forgot in your bag all day 😫

The first thing I did once I landed in Korea ☺️🥳 😍

The model building floodgates are wide open when you don't UV complete : [2505.13646] On the Present Status of Inflationary Cosmology arxiv.org/abs/2505.13646

I’m visiting Perimeter Inst. this summer (I’ve been slow on social media updates). They have many Quantum Info talks this week so I thought to attend them. Big chunks of it is pretty formal and mathematical. It reminds me of sitting in Quantum Gravity seminars 😝

Bad news: I have a cold from hell but I hope it will improve soon. Good news: they finally fixed the WiFi in my apartment so I don’t have to go work at Perimeter. Especially while I am carrying the plague 😷 I did mask though!

The IAS always has great material on its Youtube channel, including this very interesting playlist titled 'Workshop on Quantum Information and Physics' I recently found out about (which came out 8 months ago). Mathematicians, physicists and computer scientists, you have to

Up to 25,000 characters! 🤯 WTF are you going to write on a microblogging site, an essay?

Why does LIGO need two detectors anyway? Here’s why. Each detector can detect gravitational wave signals on its own. But the signals are teeny-tiny. There’s a possibility of the detectors being triggered by local disturbances in the gravitational field (like an earthquake). But

At Lee’s (Smolin) Fest at Perimeter Institute Watching the talk by Stephon Alexander on Cosmology, Quantum Gravity and a Constant

Alexander Stephon and the band practising Jazz at PI 😄

Now that’s a PI photo I can get behind. It is this time of the year 🐤🐤🐤

Niayesh Niayesh Afshordi is one of the most intellectually adventurous physicists I’ve worked with! A truly rebellious spirit but always grounded in careful and methodical thinking. Thank you for including our tale in your new book! A battle was won! 🤩

Dark matter discount, line up everyone who needs Cliff Burgess, Maria

Listen to Alice Chen and I, discussing the recent tantalizing tensions in cosmology -- and its anomaly industrial complex -- with FQxI Physics youtu.be/BfoalXiCRf4?si…