How long to truly understand Spooky action

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Discussion Overview

The discussion centers on the time and effort required for a college student, starting with basic algebra, to understand complex concepts in quantum physics, particularly "spooky action at a distance" and "many histories." Participants explore the necessary mathematical background and educational resources to achieve this understanding.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant estimates that it would take 2 to 4 years of hard work to reach a level of understanding, emphasizing that genius is not a prerequisite but moderate intelligence is necessary.
  • Suggestions for study materials include calculus textbooks, introductory physics books, and resources for linear algebra, with specific titles mentioned for each subject.
  • Another participant notes that while the Feynman Lectures are valuable, they require a solid background in mathematics for some sections, leading to mixed opinions on their overall effectiveness.
  • A later reply highlights that "spooky action at a distance" is typically addressed in advanced quantum mechanics courses, suggesting that a foundational understanding of quantum mechanics is essential before tackling such concepts.
  • It is mentioned that the "many histories" interpretation of quantum mechanics may not be formally covered in undergraduate or even graduate coursework.
  • One participant encourages taking courses at universities, especially for retirees, as a way to engage with the material and benefit from collaborative learning with others.

Areas of Agreement / Disagreement

Participants express a range of views on the time required to understand complex quantum concepts, with no consensus on a definitive timeline or approach. There is also disagreement regarding the effectiveness of specific educational resources.

Contextual Notes

Participants acknowledge the need for a strong mathematical foundation and the potential for challenges along the learning path, but do not resolve the specifics of these requirements.

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How long to truly understand "Spooky action"

I read "Putting Time in a (Leaky) Bottle at http://www.msnbc.msn.com/id/19875410/site/newsweek/page/0/

How long would it take a college student, starting with algebra 1, to reach the point where he can move, step by step, through the math that suggests the future may leak into the present, and go, "OK, I see what they are saying."

Reason for the question: I've never gone any higher than algebra, geometry and statistics. I've never taken a physics class and I've worked with enough geniuses to know I'm not one. I'm only moderately intelligent, but I have managed to get A's in my classes mostly through hard work. I enjoy the dumbed down versions of quantum physics that are out there for the layman. Now that I'm retired, I'm all into expanding my horizons.

I would like to hear your opinions on whether a math tourist can come to understand the formulas behind such things as "spooky action at a distance" and "many histories".

Is genius a prerequisite to reach this level of understanding? If not, how long would it take to get there?

Thanks.
 
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I would say 2 years of hard work should be an absolute lower bound for how long it takes you. I would estimate 3-4 years being more likely. There is also the possibility that you get bogged down and give up, although hard work will always get you through eventually. I don't think genius is a prereq, although you certainly need to be moderately smart. I would probably start by learning calculus and then doing some intro physics. My suggestions are:
Serge Lang- Basic Mathematics (a brush up on precalc math done at a slightly abstract level)
either Jame Stewart-Calculus (standard calculus book) and/or Richard Courant and Fritz John Intro to Calculus and Analysis volume 1 (a partially proof based, more theoretical calculus book. You may find this considerably more difficult than Stewart.)
For intro physics I sugest
AP French- Newtonian Mechanics (standard intro book) and/or
Daniel Kleppner and Robert Kolenkow- An introduction to mechanics (honors intro book)
You might want to read IM Schey-Div, Grad, Curl, and all that (quick and dirty vector calculus book) while working through these.

To do quantum, you'll need some linear algebra. My personal favorite is Sheldon Axler- Linear Algebra Done Right, but this might be too abstract for an intro to linear algebra. There are many less abstract books to choose from.
After that, you can go straight to quantum mechanics. I personally like
David Griffiths- Introduction to Quantum Mechanics. After that, you'll be prepared to work on most quantum topics that catches your fancy. If you want a more intense quantum book after griffiths, JJ Sakurai- Modern Quantum Mechanics is one choice.

Just to note, I have not read every book I recommend. I have worked with the Lang, French, Kleppner, Schey, Axler, and (only cursorily) the Griffiths books. I am not qualified to judge the Sakurai versus other choices. That is just word of mouth (amazon.com reviews are a good source).
 
You will need some extra background in maths for some areas but the Feynman Lectures are an excellent physics course.
 
mgb_phys said:
You will need some extra background in maths for some areas but the Feynman Lectures are an excellent physics course.

50% good, 50% overrated.
 
True they aren't perfect and you have to already have a pretty good knowledge of the background maths for some sections.

But as a single volume (ok 3 slim volumes) physics course you could actually read end-end I like them.
 
Oooh, great phrase, "math tourist"!

"Spooky action at a distance" crops up in third or fourth-year quantum mechanics in the EPR paradox. A student with this background should be capable of a mathematical description of the problem at about the level of John Baez's explanation - which is really not very mathematical at all!

http://math.ucr.edu/home/baez/physics/Quantum/bells_inequality.html

Of course, to appreciate what Bell's theorem says about whether quantum mechanics can offer a complete description of physical phenomena, it is first instructive to have done all the heavy work of calculating spin-orbit couplings and Zeeman splittings and other useful calculations for which QM gives very nice results. And that requires a bit more math.

I don't think a "many-histories" version of quantum is something that's really addressed formally in undergraduate coursework. Actually, I don't even think it's addressed in most graduate coursework!

Lots of universities will let retired people take courses. I bet taking one course at a time would actually be a lot of fun, especially if you're a little gregarious and can get yourself adopted by some undergrads so you can have some people to study with. It's nice to have others around when you get discouraged and it's also nice to have a little bit of pressure to perform on exams and confirm that you've understood the ideas going by in class.
 

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