Anton Akhmerov
@antonakhmerov.org
Condensed matter theorist and a fan of open source and open science. https://antonakhmerov.org/
Things language models apparently can't do yet: optimize a website. This is chatgpt.com eating half a gigabyte of RAM and 100% CPU to respond to a text-only query.
November 13, 2025 at 11:51 AM
Things language models apparently can't do yet: optimize a website. This is chatgpt.com eating half a gigabyte of RAM and 100% CPU to respond to a text-only query.
I've been using @mattermost.bsky.social for almost a decade (since December 2015) for my group, some courses I teach. I ended up providing a chat for a few other research groups. Unfortunately with Mattermost Inc. backpedaling their open source stance, I'll find something else.
October 22, 2025 at 5:50 PM
I've been using @mattermost.bsky.social for almost a decade (since December 2015) for my group, some courses I teach. I ended up providing a chat for a few other research groups. Unfortunately with Mattermost Inc. backpedaling their open source stance, I'll find something else.
Surgeon general warning: quantum computing is not close to being useful.
October 15, 2025 at 10:36 AM
Surgeon general warning: quantum computing is not close to being useful.
I didn't realize this before, but chatGPT logo has deep symbolism to it:
- It's cool
- It's simple
- It's visually appealing
- If you try to study it carefully, things don't quite make sense nor match
(Source: the SVG form the app, so this is *the* logo)
- It's cool
- It's simple
- It's visually appealing
- If you try to study it carefully, things don't quite make sense nor match
(Source: the SVG form the app, so this is *the* logo)
October 7, 2025 at 11:57 AM
I didn't realize this before, but chatGPT logo has deep symbolism to it:
- It's cool
- It's simple
- It's visually appealing
- If you try to study it carefully, things don't quite make sense nor match
(Source: the SVG form the app, so this is *the* logo)
- It's cool
- It's simple
- It's visually appealing
- If you try to study it carefully, things don't quite make sense nor match
(Source: the SVG form the app, so this is *the* logo)
ChatGPT is feeling mighty enabled in the last couple of days.
September 28, 2025 at 11:04 AM
ChatGPT is feeling mighty enabled in the last couple of days.
We needed to demonstrate how different symmetries look, and I think the result is neat.
September 25, 2025 at 1:12 PM
We needed to demonstrate how different symmetries look, and I think the result is neat.
I have to ask: did the agent come up with this blackboard? Seems only tangentially related to arachnophobia, but definitely anxiety-inducing.
August 25, 2025 at 10:13 AM
I have to ask: did the agent come up with this blackboard? Seems only tangentially related to arachnophobia, but definitely anxiety-inducing.
I wrote censor, a tiny package that ▮▮▮▮▮▮▮ ▮▮▮▮▮. It can even censor only names, e.g. "I'm ▮▮▮▮▮ and I work in ▮▮▮▮▮". gitlab.kwant-project.org/anton-akhmer...
February 6, 2025 at 11:52 AM
I wrote censor, a tiny package that ▮▮▮▮▮▮▮ ▮▮▮▮▮. It can even censor only names, e.g. "I'm ▮▮▮▮▮ and I work in ▮▮▮▮▮". gitlab.kwant-project.org/anton-akhmer...
This is me in the year 2050, finally looking at the source code released according to the policy of the group. Of course the image is unrealistic because I've already lost the competitive advantage.
February 4, 2025 at 1:20 PM
This is me in the year 2050, finally looking at the source code released according to the policy of the group. Of course the image is unrealistic because I've already lost the competitive advantage.
An arbitrarily weak periodic potential opens a gap in a 1D Schrödinger equation. In 2D a very weak potential with simple periodicity does not open a band gap.
Is it at all possible to open a gap in 2D perturbatively or is there a minimal strength to open a gap at energy E?
Is it at all possible to open a gap in 2D perturbatively or is there a minimal strength to open a gap at energy E?
January 30, 2025 at 11:55 PM
An arbitrarily weak periodic potential opens a gap in a 1D Schrödinger equation. In 2D a very weak potential with simple periodicity does not open a band gap.
Is it at all possible to open a gap in 2D perturbatively or is there a minimal strength to open a gap at energy E?
Is it at all possible to open a gap in 2D perturbatively or is there a minimal strength to open a gap at energy E?
While tinkering with pymablock.readthedocs.io, I computed the difference between the spectrum of H₀+αH₁ and the spectrum obtained perturbatively in α up to 100th order. For low α they converge to machine precision 🔬, but above convergence radius everything goes 🥴
Not a surprise, but nice to see.
Not a surprise, but nice to see.
January 5, 2025 at 12:09 PM
While tinkering with pymablock.readthedocs.io, I computed the difference between the spectrum of H₀+αH₁ and the spectrum obtained perturbatively in α up to 100th order. For low α they converge to machine precision 🔬, but above convergence radius everything goes 🥴
Not a surprise, but nice to see.
Not a surprise, but nice to see.
January 5, 2025 at 11:35 AM