physics.princeton.edu/~npo/SurveyTopics/QPHall.html

Sometimes, a physicists at a chemistry lecture plus heavy dose of free association can lead to unexpected google searches

Today there was a physicists holding a seminar on spin liquids. There he mentioned about something I don't know about, that spinons carry nonzero entropy and hence they can participate in thermal transport.

This caused neural connections in my brain associated with the concepts "entropy" and "zero entropy" to light up, which then combined with the quasiparticle trigger word and the fact that zero energy modes exists in some systems, lead to me to wonder about the existence of "zero entropy quasiparticles". Googling that gives me the thermal Hall effect introduction

as well this interesting paper on how strong couplings in kagome lattices can restore the decay of some quasiparticles nature.com/articles/s41567-019-0535-3

hey panini.

Good morning grown-up biological fetuses.

greet

I have a question. I've seen in movies, someone is drowning and someone else goes underwater to give him mouth-to-mouth air, but a human exhales CO2, not O2, what's going on?

@RyanUnger is that yours

@Slereah no

It’s what we’re doing in “introduction to PDE”

I have a very screwed up political alignment that can be described mathematically as follows

Let $M$ be me and $A,B,C,D,...$ be political ideologies

Then the following is true:

$M \cap (A \cup B \cup C \cup D \cup \cdots ) \neq \varnothing$

For all ideologies $X$, $|M \cap X |< \frac{1}{2}$ and $|M \cap X^{\complement}| > \frac{1}{2}$

There exists some ideology $Y$ such that $M \cap Y = \varnothing$

$\bigcap_X X \cap M =\varnothing$

Or in words:

1. I align with every ideology

2. I align with some ideology $X$ because I antialign with some of its stances

3. I antialign with some ideology $X$ because I strongly align with almost all of their stances

4. No ideology overlap significantly with me

New OP discovers the joys of the HNQ :) astronomy.stackexchange.com/questions/33628/why-is-mars-cold/…

@PM2Ring We needed Greta Thunberg here XD

@NovaliumCompany A human doesn't replace transform all of the oxygen in their lungs with carbon dioxide, so there's plenty of oxygen left. Otherwise you could die from holding your breath.

Hello :) @PM2Ring

@rob You can die from holding your breath, no? I think there's a primal instinct in the brain that forces us at the critical point to inhale air.

@NovaliumCompany You can die from not breathing, yes. But one of the symptoms of suffocation is that you lose conscious control over your breathing apparatus. I'm pretty sure that you can hold your breath until you faint, but not hold your breath until you die. Which suggests that, even at the point where you faint, you're still extracting some oxygen from the air remaining in your lungs.

To your question above, underwater mouth-to-mouth air transfer takes much less time than that. There's plenty of oxygen remaining in a normal exhalation.

Fun fact: The feeling of suffocation is triggered by high carbon dioxide levels, not by low oxygen levels. That's why people can suffocate without being alarmed in other gases.

yarp

Ex: dying from breathing in only helium or breathing in xenon and not flushing it from your lungs

arghhh google is out of TPUs...this GPU is so slow tho...

@ACuriousMind is that fun?

Apparently Verlinde (which one?) is going very slowly in QFT

So it’s probably fine that I’m missing it

@RyanUnger Fun fact: Not all fun facts are fun

:(

Hello everybody! I need a bit of help. If somebody would reply :)

If we define fermi energy as the chemical potential, shouldn't it rise above the Intrinsic fermi energy in the case of doped semiconductors, no matter p type or n type, because in both cases we're adding dopants to the system which have electrons in addition to that of the intrinsic semiconductor so we have to do more work to add those electrons.

Neuralink.

Conan O'Brien.

Bruno Mars.

Steve Jobs.

Alibaba.

But that's wrong thinking because in a p-type doped...I saw the fermi energy (at 0K) lies far below the intrinsic level. Please tell me where did I go wrong. Thanks ;)

@ACuriousMind Fun fact: Not all fun facts that are said to be fun facts are fun facts.

why no one laughs at my jokes :(

ha ha

@NovaliumCompany Brute fact: Not all brute facts that are said to be brute facts are brute facts.

see also: here

:-)

@Secret very interesting link thx for sharing and makes me think that superconductivity is really superfluidity and maybe that latter pov/ insight will someday crack open the mystery...

\o @rob how goes the drama on meta?

@skullpatrol The public discussion about the changes to the CoC is kind of a trainwreck. I'm stepping away from the computer for a while, but there's tons to dive into there.

thanks for the update pal

doot doot

more mob handwringing+angst about... pronouns? wtf! @#%& bikeshedding,,,! choose your battles (MORE!) wisely!

doot doot

hoot hoot

@PM2Ring Was called into work today. Tomorrow I'm on call. But the chance of being called in is approximately 63%. Sunday I'm not on call and am completely free. Can we talk then? Life sucks some weeks.