The h Bar

Relativisticcucumber

00:01

Rabbit Vocalizations - The Sounds That Rabbits Make

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apparently they can make lots of (mostly) quiet sounds

Herr Feinmann

00:25

German people (@ACuriousMind @TobiasFünke are those I can think of) do you relate?

ACuriousMind

@HerrFeinmann Partly: The introduction is a false friend - "it tastes" is a literal translation of es schmeckt, but German schmecken without any qualifiers is positively connotated, i..e "it tastes" as a full sentence is an actual compliment. Similarly, "one cannot complain" is an idiom expressing approval - literally: There is nothing to complain about, i.e. everything is fine

(though if this was the only thing you said as praise it would still be perceived as deliberately avoiding saying anything specific, this is not what I would say to cooking a friend presented to me)

i.e. all these phrases are what a German would say to express approval, but if they were the only thing they said as approval it would be weird, but not quite as weird as it comes across in the translation

this might also be a very German answer to the question :P

Herr Feinmann

00:40

@ACuriousMind yeah, you confirmed the steretype. One cannot complain. :P

In Italy you have the same sentences and you would only say that jokingly, in an ironic way, so you have to make sure the irony is evident. If you say it seriously it may come off as a little rude :P

naturallyInconsistent

@HerrFeinmann I think that is the most easiest and consistent way to label all these brackets, especially including Poisson and Lagrange. What you proposed only works for Fermions and Bosons; it certainly wont work with anyons, say.

Herr Feinmann

I never had to work with anyons and I barely know what they are, so I guess I'll conced the point!

ACuriousMind

@HerrFeinmann There is certainly some kind of irony/understatement to "one cannot complain", but "it tastes" is just how the German verb functions

just wait until you ask a German "how's it going" and they reply "it has to" :P

(German: "Wie geht's?" - "Muss")

Herr Feinmann

I dropped an "e" in my "concede" grrrrr

@ACuriousMind I swear, these "German replies" in English crack me up

ACuriousMind

00:57

I was also explicitly taught to reply "I'm fine, thanks. How are you?" instead of trying to answer the question :P

Silly Goose

here, $C$ are fermionic operators (on a lattice).

Herr Feinmann

@ACuriousMind Incidentally, Italian has the same literal question to ask what's up

Silly Goose

I am wondering if the second and third lines in (3.6) are actually correct. I am getting a different answer after trying direct computation.

Herr Feinmann

"Come va?"

Silly Goose

also there is an error in the first image. the $\sigma^+$ should have a minus sign in front of its $\pi i$

ACuriousMind

01:01

@HerrFeinmann The German "Wie geht's?" is the same - but it's not a question you ask strangers. If you pose this question to someone, it's completely within the bounds of politeness to answer with an honest assessment of how it's going (though oversharing isn't expected :P)

Silly Goose

My attempt is $\begin{aligned}
\sigma^{(m)}_+\sigma_+^{(m+1)} &= \exp(-i\pi\sum_{j=1}^{m-1}\sigma_+^{(j)} \sigma_-^{(j)} )C_m^\dagger \exp(-i\pi\sigma_+^{(m)} \sigma_-^{(m)} ) \exp(-i\pi\sum_{j=1}^{m-1}\sigma_+^{(j)} \sigma_-^{(j)} )C_{m+1} \\
&= \exp(-2i\pi\sum_{j=1}^{m-1}\sigma_+^{(j)} \sigma_-^{(j)} )C_m^\dagger \exp(-i\pi\sigma_+^{(m)} \sigma_-^{(m)} )C_{m+1} \\
&= \exp(-2i\pi\sum_{j=1}^{m-1}\sigma_+^{(j)} \sigma_-^{(j)} )[\exp(i\pi\sigma_+^{(m)} \sigma_-^{(m)} )C_m]^\dagger C_{m+1} \\
&= \exp(-2i\pi\sum_{j=1}^{m-1}\sigma_+^{(j)} \sigma_-^{(j)} )C_m^\dagger C_{m+1}.

ACuriousMind

Like, I ask this to colleagues on break and they will reply with some trouble they have (either at work or privately) and then we talk about that; it's not the same kind of polite greeting it is in most anglophone countries

Herr Feinmann

@ACuriousMind oooh, well I see what you mean. Well, even in English I never had this boundary. I reply sincerely in every language, I don't care what people meant. It's not quite just an idiom, it has the meaning of asking about someone's wellbeing too. The only situation in which I say "I'm fine, thank you" is when I'm too lazy to say it all

I mean that I don't feel compelled to say that I am fine. I could, but not because of some social obligation

In Japan it's even more extreme. You'd probably lie to avoid making the other person uneasy

My usual way to go is to reply "not well" :P

I mean, just like you can say "I'm fine, thank you" without oversharing, you can say "I'm not fine, thank you" without oversharing

They are asking how, not why

ACuriousMind

@HerrFeinmann Sure, but saying "not fine" is an obvious invitation for them to ask "why not?"

which is impolite if it was just meant as an idiom and not a genuine question

qwerty

I like the French where you just say ça va in reply to ça va

ACuriousMind

01:15

It's really that in German I will only ask someone "how it's going" if I am prepared for the answer to spawn an entire conversation - but in English that is how some meetings start and the only expected answer is "I'm fine" - someone actually giving an answer disrupts the expected flow (but it is extremely funny to observe as someone not that involved in the actual topic of the meeting because it would also be impolite for the asker to interrupt the answer :P)

@qwerty as someone who only speaks no living romance language I cannot tell what this means :P

but I would assume 'va' is a form of 'to go'

Silly Goose

ca va? is how are you but it is also a response to itself: ca va? ca va.

qwerty

@ACuriousMind just "how are you" in french. I think literally you're right - "is it going”

ACuriousMind

and the answer is "is it going?"? or does it also mean "it's going"?

if two people are just asking each other the question here, neither answering but just continuing the conversation I find that even more bizarre than the English expectation of answering "I'm fine" :P

@Slereah defend your language

qwerty

my french consists of a few basic phrases from high school, so I don't know the fine details of the translation, but it's an accepted response with a full stop, rather than a continued questioning

lol. I also know how say he is cute "Il est mignon"? xD I don't know why they taught us that first

Japanese I remember how to ask for a phone number and that's about it

ACuriousMind

01:31

did you take some kind of "pickup lines in X languages" course :P

qwerty

hehehe maybe 👀

Silly Goose

the resolution to my question above is that $C_j^\dagger C_j$ is a projector, so it has a simple exponential, which becomes the identity when the parameter is $2\pi i$

Silly Goose