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Anonymous at Fri, 7 Feb 2025 12:30:55 UTC No. 16578350
>How hard is quantum physics to learn actually
>Im a finance student
>Recently visiting my college library
>Seen a quantum physics book
>Looks great can't understand what is all about
>So how to know more about this quantum physics
Anonymous at Fri, 7 Feb 2025 12:54:15 UTC No. 16578358
If you know linear algebra and basic calculus, then it's not hard.
Anonymous at Fri, 7 Feb 2025 13:11:32 UTC No. 16578363
it's difficult because the theories don't make sense and all we have are approximations and interpretations. not that there is anything better though. but the current model is wrong and held up by exceptions (cope for wrong)
Anonymous at Fri, 7 Feb 2025 13:16:59 UTC No. 16578367
>>16578358
Actually I don't know
Anonymous at Fri, 7 Feb 2025 16:23:09 UTC No. 16578527
If you are at the level where you understand how a Fourier transform works, it shouldn't be too hard to learn undergrad quantum mechanics. You don't need to learn linear algebra in advance.
Anonymous at Fri, 7 Feb 2025 17:20:42 UTC No. 16578583
just learn stochastic calculus and optimal control and it is enough for you to succeed irl
Anonymous at Fri, 7 Feb 2025 19:33:11 UTC No. 16578689
>>16578653
Business majors only require Business Math which is Algebra I. Accountants need to know Calculus, but the CPA exam is really hard, and Actuaries don't make decisions - business degree holders do. Also, most Actuaries are slated to be automated with Excel so there is no reason for a business to hire a smart math person when they can just buy it from SAP. Business doesn't require math anyway, since business is all connections and social networking. Lawyers make more money for a reason.
Anonymous at Fri, 7 Feb 2025 19:34:39 UTC No. 16578692
related to OP's question: I'm getting a degree in engineering, but going into differential equations. Is it worth my time to learn Linear Algebra when it is not required for my degree?
Anonymous at Fri, 7 Feb 2025 20:54:48 UTC No. 16578779
>>16578692
Depends a bit on the type of engineering, but probably not the worst idea to go through a first course undergrad book
Anonymous at Fri, 7 Feb 2025 22:20:25 UTC No. 16578874
>>16578653
At that point, if you just want an economy that strictly adheres to running off of autistically computing patterns, you might as well just use astrology.
Anonymous at Fri, 7 Feb 2025 22:24:23 UTC No. 16578881
>>16578527
>You don't need to learn linear algebra in advance.
Ah, the classic “a Hilbert space is some magical thing, deal with it” teaching approach to physics.
Anonymous at Fri, 7 Feb 2025 22:34:58 UTC No. 16578902
>>16578881
That's not what I said. I said you don't need to learn it in advance.
Anonymous at Fri, 7 Feb 2025 22:36:01 UTC No. 16578906
>>16578350
>finance student
>know more about this quantum physics
I have zero knowledge on quantum physics outside the cat in the box, but you anon, I like your style
Anonymous at Fri, 7 Feb 2025 22:40:15 UTC No. 16578915
>>16578902
You better do because QM quickly jumps to L^2 spaces, which anally rape your intuition due to being infinite-dimensional.
Anonymous at Fri, 7 Feb 2025 22:52:40 UTC No. 16578931
>>16578689
I own a business and I use calculus and diff eq all the time for financial projections. It's not necessary to run a business, but it gives me insights which help me make decisions.
Anonymous at Fri, 7 Feb 2025 23:11:38 UTC No. 16578962
>>16578915
>which anally rape your intuition due to being infinite-dimensional.
It's not that hard. And for the sake of an undergraduate quantum mechanics class, if you understand finite dimensional Hilbert spaces you understand infinite dimensional ones too. It's not worth spending a semester with a class taught by the math department when any intro to QM class will teach you what a self-adjoint operator is anyway.
Anonymous at Sat, 8 Feb 2025 00:34:16 UTC No. 16579023
>>16578962
>It's not that hard.
Give me a working definition of linear independence in uncountably-infinite-dimensional spaces. Because the usual schtick with av+bw + cu = 0 if and only if a=b=c=0 obviously doesn't work since no such thing as an "uncountable sum" exists.
>And for the sake of an undergraduate quantum mechanics class, if you understand finite dimensional Hilbert spaces you understand infinite dimensional ones too.
I don't know what your undergrad QM course was like, but mine included a basic introduction to position and momentum kets. And, no, you don't understand infinite-dimensional spaces if you understand finite-dimensional ones. It's like claiming to understand Lie groups if you understand finite groups.
Anonymous at Sat, 8 Feb 2025 00:44:34 UTC No. 16579027
>>16579023
>Give me a working definition of linear independence in uncountably-infinite-dimensional spaces
This is relevant to someone like OP because...
>And, no, you don't understand infinite-dimensional spaces if you understand finite-dimensional ones
Sure you do. Once you understand the basic concepts it generalizes straightforwardly to spaces like L^2. That's why the abstraction involved in linear algebra was useful in the first place.
Anonymous at Sat, 8 Feb 2025 01:00:06 UTC No. 16579036
>>16579027
>This is relevant to someone like OP because...
because an orthonormal basis of a Hilbert space and transformations between such bases are crucial parts of understanding QM, even at an undergraduate level. Hell, the first thing you usually learn as an undergrad is how to transform from one axis of a spin state to another.
>That's why the abstraction involved in linear algebra was useful in the first place.
Which is why I said OP should be familiar with linear algebra as an abstract-algebraic topic rather than “learning as you go”. The last thing you want to do is learn abstract mathematical concepts from physics textbooks.
Anonymous at Sat, 8 Feb 2025 06:20:00 UTC No. 16579212
>>16578350
You will not learn actual physics in any public school. It's all owned by IBM and DoD guards it jealously. The best you'll be taught is Standard Model and indoctrinated into that cult to keep you spinning your wheels and out of the way.
Anonymous at Sat, 8 Feb 2025 06:24:04 UTC No. 16579213
>>16578363
The closest you can get to actual physics in public school is organic chemistry and if you're lucky you can find graduate classes on crystallography then reverse engineer it from there.
Don't tell anyone what you figure out though. Publishing a unified theory would crash the global economy.
Anonymous at Sat, 8 Feb 2025 12:34:22 UTC No. 16579374
>>16578874
Not the same anon, but that sounds kind of fun.
Anonymous at Sat, 8 Feb 2025 12:44:08 UTC No. 16579376
>>16578350
Quantum mechanics could be fine, don't need an awful lot of math.... although intuition has to be left at the door. More so than relativity anyway (less intuition).
Quantum field theories of the standard model and beyond though are much harder and there's much more to it.
Anonymous at Sun, 9 Feb 2025 10:17:31 UTC No. 16580147
>>16578350
I just got to quantum mechanics in PChem and the only thing you really need to learn the math is a good grasp on how derivatives work. Assuming you paid attention in high school science and know the fundamental properties of photons and subatomic particles.
Anonymous at Sun, 9 Feb 2025 15:17:25 UTC No. 16580385
>How hard is quantum physics to learn actually
>Im a finance student
did you study probability theory?
did you study basic calculus?
Yes? then it won't be too complicated
It's essentially calculus mixed with probabilities.
People think the word "quantum" makes it super difficult to understand, but the basic premise is that "quantum" means that somthing has multiple states like on and off switch except both states are described via
>probablity of it being on or off
That's whe whole quantum mechanics in a nutshell at least it's premise.
The rest is just calculating shit, like probability of electron or an atom or a photon or whatever particle to do someting. In fact interactions between particles are a different discipline also known as QFT.
The whole thing is mostly math and i mean pages and pages of math. That meme pop culture image of a physicist where a dude fills an entire blackboard with math is exactly what it is.
You should in fact ask yourself a question why do you even need it. Nukes and nuclear reactors are already invented, it's mostly a dead end lol.
Anonymous at Sun, 9 Feb 2025 16:48:10 UTC No. 16580423
>>16580385
You don’t need probability theory at all. All probability in quantum mechanics is contained in a single statement: one only considers rays (unit vectors) and unitary transformations between them. You never actually work with probabilistic concepts in quantum mechanics. Nobody really cares about the kurtosis of some probability distribution in QM. You work with linear algebra, which implicitly contains probability theory in it do the statement above.
Anonymous at Sun, 9 Feb 2025 17:09:52 UTC No. 16580442
>If you think you understand quantum mechanics, you don't understand quantum mechanics
>t. Dick Fine Man, Nobel Laureate for his work on Quantum Electrodynamics
lol @ ppl itt saying qm is ez
Anonymous at Sun, 9 Feb 2025 17:35:31 UTC No. 16580465
>>16580442
he said something similar in the 1960s, who cares man
>>16580423
>Nobody really cares about the kurtosis of some probability distribution in QM.
that's still useful if you wish to at least imagine this work in your head.
But i get what you mean.
Anonymous at Mon, 10 Feb 2025 01:00:21 UTC No. 16580816
>>16578350
> retard
> stop randomly using arrows for
> no fucking reason
> /thread
Anonymous at Tue, 11 Feb 2025 12:54:25 UTC No. 16582413
>>16578692
The principles of linear algebra allow you to write efficient computer code to solve differential equations you can't by hand. Definitely learn it, even if it's self study. If you have the opportunity to take a course on it, all the better.
Anonymous at Tue, 11 Feb 2025 13:03:34 UTC No. 16582422
>>16578350
>So how to know more about this quantum physics
If you actually want to learn it start taking physics courses.
If you want to learn "about" it, go watch PBS Space Time and 3Blue1Brown.
Do not come back to this site or you will likely become retarded.