/sci/ - Science & Math

lol i have sat on that pipe

math anon here. dabbled in intro physics in my first year but haven't touched it since. what is the best way to get back into physics after 3 years of just doing pure math? is there any books you can recommend?

>>10138086
Classical Dynamics Of particles and Systems

>>10138084
his pipe?

>>10138089
Thanks, just checked it out and it seems like it will do me good.

>>10138090
lewd

>>10138097
no one can resist

Good intro books for particle and nuclear physics?

>>10138102
modern particle physics by thomson

I'm thinking about going into research. Biophysics or Optics?

>>10138140
Biophys

Alright anons, I am a math/physics major in college. I am applying to math schools for PhD because my school did not prepare me as well in physics side of things (ie less rigor, no offering beyond the usual QM, EM and so on).
in grad school, I am thinking to do something in topology or geometry with mathematical physics in mind. so basically do i have any possibilities of eventually switching back to theoretical physics?

>>10138149
Why?

>>10138159
Why not?

>>10138081
I love how a lot of these threads just turns into fags asking for asking for advice they already know the answer to.

>>10138174
you haven't added anything of use to anybody. good job.

>>10138140
Optics is more comfy. Except particle physics, most experimental research is based on optics (ultracold systems, many body quantum systems, quantum simulation, a bunch of quantum computers...).
Biophysics sounds like spending your life trying to explain math to your coworkers.

>>10138159
Shut up and take it

>>10138159
More work, more to learn, biology needs significantly more physicists and mathematicians working with molecular and ecological bio research teams. Im doing Biophys with an emphasis on ecology and genetics. Its completely open ended and one of the most satisfying projects you could set your sights on.

>>10138102
Introduction to particles physic by Griffiths is quite good even if Griffiths can be a meme sometimes

Favorite math techniques?

inb4 stuff everyone uses like fourier transforms

>>10138502
throwing toys
(it's a real thing)

>>10138651
elaborate?

>>10138674
it's a statistical method used in high-energy experiment. basically a toy is a pseudodataset you generate from some prediction, and then "throwing toys" means generating a lot of slightly different toys (the differences based on e.g. systematic uncertainties) and then you calculate what you need from using all the toy pseudodata sets

e.g. https://indico.cern.ch/event/676637/contributions/2771270/attachments/1550126/2434880/swiatlow.pdf

Can someone explain what the restricted Lorentz group is? How is it different from the Lorentz group?

>>10138715
restricted Lorentz group doesn't include some transformations like swapping time for negative time and mirror reflections of space

>>10138715
Lorentz group = SO(3,1)

Restricted Lorentz group = connected component of the the identity in SO(3,1)

>>10138731
>t. mathfag

>>10138090
Sorry, he only fouls gods for fun

beans

Is Griffiths /ourguy/ or what?

Any other authors who have a super solid selection of books on different topics in physics?

>>10139273
our. guy.

>>10138688
> be me
> edgy pp PhD
> gonna discover SUSY for teh lulz
> anon you must use HistFitter
> lol whatever
> it's the single worst piece of fucking software written on this plane of existence
> throws different errors every time you run it, without changing the code
> you get it to work finally after reading many threads on cern forums (other people similarly hate its living guts)
> come back two days later to check result, again a new error, again not changed a single piece of the code from when it last worked
> can't give up now anon, they need the results for moriond,
> spend the next few months, 24/7 working on this pos analysis, meetings twice or three times every fucking week, even when I don't have anything to present
> whatsthefuckingpoint.jpeg
> become nervous wreck, no money and no gf, barely speak to anyone outside of cern and physics, out of shape
> finished PhD, looking for a job outside academia,
> talk with degenerate scum aka the HR people
> lol nigga you need work experience,
> wtf I have PhD which I spent four years of my life on it
> get a job for 33k, can barely afford to pay rent, still no gf, can't get any worse can it
> posts on /sci/
Yeah, I have been down that road anons

>>10139318
>t. wasn't good enough at throwing toys

>>10138094
Berkeley sequence for undergrads works, too. Purcell’s book is pretty good for intro E&M.

>>10138502
Green’s function

>>10139318
>SUSY
That’s where you went wrong. No one believes in that retardation... at least for the past 2 decades.

>>10138156
You could go for mathematical physics somewhere like Indiana University, or I think Texas A&M. I think that would be a better fit if you feel stronger about the math than the physics, but still want to do physics. You could also look into computational physics.

>>10138081
>serncucks release a public document denouncing timeline branch theory to cover their asses

What do all the physicists do when a unified theory is put together and all of the questions of our reality are solved? Is the entire field a race to put everyone else out of a job?

>>10139391
>namefag posts shitpost to release gas from his ass

> What do all the physicists do when a unified theory is put together and all of the questions of our reality are solved? Is the entire field a race to put everyone else out of a job?
test it, probably prove it wrong

>>10139395
As if that’ll ever happen.

>>10139395
Decades or centuries in the future. Having a unified theory doesn't even mean you have all the problems solved. And if all physics were solved, then it would be a good link into chemistry, then biology, etc.

>>10139432
Sure, but there's an end goal, right? I mean in the philosophy of it all.

>>10139469
Sure, the end goal is understanding something a little bit more. We reach the end goal every century or so, but there’s always dragons lurking in the cyclop’s anus.

>>10139488
You can't possibly know that for sure.

>>10139406
i'm laughing at you right now, simpleton

>>10139496
I’m more sure of dragons in a cyclop’s anus than I am about the end goal of the drive for understanding. Even if physics is “unified” just think of all the holes we still have in basic physics.

>>10139318
What the fuck did you expect in pp? Academia is the only way and if you give that up you might have as well wasted 10 years of your life instead of UNI, retard.

>>10139395
>unified theory
>all of the questions of our reality are solved?
That's 10^23 equations you have to solve with this theory of everything at minimum to even make a basic statement about a kilogram of anything. Finding clever ways to tackle this problem without starting at the very very very rock bottom will always be a thing.

>>10139535
Good advice I got from a post doc was that to save up as a post doc, you make almost double as a graduate student at that point. Let’s say you can’t continue or don’t want to continue in academia. Best options are to leave your post at some point and just gun it for industry. Your advisor/boss will be upset but will not want a pupil of theirs to go homeless. They might cut funding, but you got savings. Just spend that time to prep for job interviews. They have books available to prep for job interview questions. Study them like you’re studying for quals for a few months. Keep applying. Go through 2-3 interviews a week and get the benefits you’re supposed to get. If they see PhD, then they want PhD work put in. You’re not going to coast in on a piece of paper.

>want to study physics, either CMP, plasma or nuke
>am really not good at newtonian mechanics/kinematics
I'm good at math but I find it hard to apply formulas to real physical problems, I probably lack common sense. As a result I'm struggling with classical mechanics. What do?

>>10140118
>can't apply physics to physical problems, prefers playing with equations
sounds like a future string theorist

>>10139395
>what is Godels Incompleteness Theorem
Brainlet.png

>>10141524
But I don't want to get into cosmology and HEP, I want to work on real world problems.

>Biology Major with Math minor and took Gen Phys.
>Notice there is a Physics with Biophysics Specilization.
>Already completed most of the degree, so apply for the major. Currently taking senior level physic classes which are fine.
>Holding off a 1 credit class off for Biology degree. I can't finish the last class or else I have to apply for post bac status.
>Biophysics is all cell shit. The research opportunities (required) is all cell shit.
>mfw I thought I'd learn about the forces of the skeleto-muscular system and I could apply that to robotics. Serious.