Gaurav Harsha

Fully Analytic Nuclear Gradients for the Bethe--Salpeter Equation The Bethe-Salpeter equation (BSE) formalism, combined with the $GW$ approximation for ionization energies and electron affinities, is emerging as an efficient and accurate method for predicting optica...

arxiv.org/abs/2507.02160 #compchem

04.07.2025 05:51 — 👍 7    🔁 3    💬 1    📌 0

Has scientific progress slowed? Dirac said in 1929 that “all the laws for most of chemistry are known.” Yet it took nearly a century of hard work to describe quantum materials well enough to design batteries, solar cells, and electronics. Incremental progress matters. Nice blogpost by Doug.

01.07.2025 16:28 — 👍 1    🔁 0    💬 0    📌 0

Tetris game depicting that many things in life don’t work out as you envision. Sometimes the data from experiments don’t fit perfectly with your story.

That feeling when you do all this work for this ONE piece of data for your story and the results don’t exactly fit the way you want it to…🧪🧫

07.06.2025 21:42 — 👍 94    🔁 9    💬 6    📌 1

The quantum Zeno effect: how the ‘measurement problem’ went from philosophers’ paradox to physicists’ toolbox – Physics World A stand-out example of quantum weirdness is turning out to be surprisingly useful, as Margaret Harris explains

“The problem is that in quantum mechanics it is almost impossible . . . to say what you mean, or perhaps even to know what you mean, because you are dealing with concepts that defy language.” - @philipcball.bsky.social , Beyond Weird (2018) [1/n]

physicsworld.com/a/the-quantu...

15.04.2025 05:16 — 👍 2    🔁 1    💬 1    📌 0

appreciatingtheordinary.substack.com/p/chasing-pr...

#quantum #IYQ2025 #science #physics #nature #history #IYQ

06.04.2025 08:23 — 👍 3    🔁 1    💬 0    📌 0

🧪⚛️ This is coming, science folks. NSF, NIH, DOE, presumably DOD. I don't know which/how many program officers and staff at these agencies are considered "essential" during short government shutdowns.

26.02.2025 16:49 — 👍 7    🔁 6    💬 2    📌 0

Science under threat | Royal Society The Royal Society will use its voice and the expertise of our Fellows to resist the various challenges to science.

Science advances our economic, physical, and social and cultural wellbeing, and is key to a sustainable future. However, we live in times of great change, and the values that have driven science for the benefit of humanity are under threat. Read our statement here: royalsociety.org/news/2025/02...

25.02.2025 14:11 — 👍 145    🔁 83    💬 47    📌 59