Advanced Quantum Physics by Paar - Opinions?

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Discussion Overview

The discussion revolves around opinions and evaluations of the book "Advanced Quantum Physics" by Hans Paar. Participants explore its content, quality, and potential use as a resource for understanding advanced quantum mechanics, particularly in relation to other texts like Sakurai's work. The conversation touches on various aspects of the book's approach to quantum mechanics and its perceived value for undergraduate students.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • Some participants question whether the book serves as a suitable bridge between quantum mechanics (QM) and quantum field theory (QFT).
  • One participant expresses disappointment with the book's content, claiming it contains significant errors in its treatment of hidden variables, the watched pot effect, and Schrödinger’s Cat.
  • Another participant notes the fluctuating price of the book on Amazon, suggesting it reflects its perceived value.
  • Concerns are raised about the quality of peer review in scientific publishing, particularly regarding the author's credentials and the accuracy of the material presented.
  • Participants discuss the conventions used in the book, particularly the sign conventions in relativity, and debate the origins of the terms "East Coast" and "West Coast" conventions.
  • Some participants express skepticism about the author's qualifications and the overall quality of the book, suggesting it may not be a reliable resource.

Areas of Agreement / Disagreement

There is no consensus on the quality or utility of the book. While some participants criticize it for inaccuracies, others question the validity of these criticisms and discuss the conventions used in the text. The discussion remains unresolved regarding the book's overall value and the author's credibility.

Contextual Notes

Participants highlight missing assumptions and unresolved claims regarding the book's content and the author's interpretations of quantum mechanics. The discussion reflects a range of perspectives on the reliability of the material presented.

smodak
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Anyone read the book Advanced Quantum Physics by Hans Paar ? Is this somewhat analogous to Sakurai's advanced quantum mechanics? If anyone used it, can youcomment on what you used it for (e.g. was it a bridge between QM and QFT)? I happened to see this book on amazon and from the excerpt, it looks like an interesting material and quite inexpensive. It also seems to have been written for undergraduates. Please share if you have any opinions about this book. Thank you!
 
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I happen to have the contents of the book:

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N.B.: Please don't penalise me for posting the contents. I haven't posted anything of the interiors of the book. This will simply help the readers to understand whether the book will be of help for them.
 

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Wrichik Basu said:
I happen to have the contents of the book:

View attachment 215712

View attachment 215713

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N.B.: Please don't penalise me for posting the contents. I haven't posted anything of the interiors of the book. This will simply help the readers to understand whether the book will be of help for them.
Thank you! Saw the contents on amazon as well.
 
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Strange, I ordered my copy with free prime shipping for $19.94 ("quite inexpensive" as stated in my OP) in the morning and now the price shows up as $39.97 with only a single copy left. I knew Amazon prices fluctuate a bit but the price just got doubled in a few hours? Weird...
 
I've opened the introduction page on Amazon and can say the book is junk, too bad you spent 20 bucks for a book of no use. The author uses the ancient x_4 = it (he takes c=1) convention which he mistakenly calls "East Coast". This cannot be any more incorrect, the East Coast is -+++, not ++++.
See other mistakes / mesmerizing stuff in the photo below.
wrong.JPG
 

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smodak said:
Anyone read the book Advanced Quantum Physics by Hans Paar ? Is this somewhat analogous to Sakurai's advanced quantum mechanics? If anyone used it, can youcomment on what you used it for (e.g. was it a bridge between QM and QFT)? I happened to see this book on amazon and from the excerpt, it looks like an interesting material and quite inexpensive. It also seems to have been written for undergraduates. Please share if you have any opinions about this book. Thank you!
Out of curiosity, I have checked out 3 sections of the book. Amazingly, all 3 are deeply wrong.

In Sec. 5.6 Hidden Variables and Bell’s Theorem, the author concludes that hidden variables are impossible. That's wrong, the Bell's theorem only shows that local hidden variables are impossible.

In Sec. 5.5 The Watched Pot, the author concludes that the watched pot effect does not exist due the Heisenberg energy-time uncertainty relations. That's wrong, the effect has in fact been measured.

In Sec. 5.4 Schrödinger’s Cat, the author concludes that the cat cannot be a superposition of just two terms because it consists of a large number of particles. That's not only wrong, but totally meaningless. If the argument was correct, then the same reasoning would imply that the cat also cannot be described by just one term, for instance that the cat cannot be just alive.
 
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smodak said:
Strange, I ordered my copy with free prime shipping for $19.94 ("quite inexpensive" as stated in my OP) in the morning and now the price shows up as $39.97 with only a single copy left. I knew Amazon prices fluctuate a bit but the price just got doubled in a few hours? Weird...
That's in fact logical. Initially they had two copies (since the book is a bullshit they were smart enough not to order more copies) and your order halved the number of copies they have, so it was "logical" to double the prize. :biggrin:
 
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Haha. I guess you get what you pay for :)

Wonder, why the author even bothered writing it...
 
The level of "peer-review" by the editorial staff of a publisher (Wiley is not really Springer or Elsevier, OUP or CUP, but a name, nonetheless) has unfortunately decreased. This fellow with a Germanic name was (at the time of publishing) a lecturer at the http://www.ucsd.edu/, meaning that students were taught incorrect things, not in an obscure county/community college, but in a university of a city of 2 Mio. people and 3,3 Mio. in the metro area

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dextercioby said:
He should be about 70 years old, so hopefully, he's being waived by the faculty into retirement, so that somebody who can read Wikipedia https://en.wikipedia.org/wiki/Sign_convention could take his place...
LOL
 
  • #13
Is there a serious lectorate at science-book publishes nowadays at all? Once Springer (one of the most renowned science publishers) had a stand at a physics conference, and I addressed the representant quite critically that such a renowned publisher published crackpot writing from an author called Unzicker. Fortnately it was in German. So I hope this nonsense, going as far as claiming that the collective science community at the LHC doesn't measure what they claim to measure, and that it's all wrong (including the Standard Model). The Springer representant's answer was: "Oh, don't worry, that's only in our public-science outreach program." Well, I only could quote Einstein: "You should make things as simple as possible but not simpler." I added that this holds also for public-science writings. It's really amazing, what these publishers publish, only because they can make some amount of money with it (although I doubt that this can be very much either).
 
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  • #14
dextercioby said:
He should be about 70 years old, so hopefully, he's being waived by the faculty into retirement, so that somebody who can read Wikipedia https://en.wikipedia.org/wiki/Sign_convention could take his place...
Do you know why the two conventions are called "east coast" and "west coast"? (I don't, so I ask.)
 
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  • #15
I think, the west coast convention ##(\eta_{\mu \nu})=\mathrm{diag}(1,-1,-1,-1)## is called like this, because it's used in the famous two-volume textbook by Bjorken and Drell (vol. 2 is still great, particularly the careful discussion of "LSZ and all that"; concerning renormalization it's outdated, because it has been written before BPHZ was fully established).
 
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vanhees71 said:
I think, the west coast convention ##(\eta_{\mu \nu})=\mathrm{diag}(1,-1,-1,-1)## is called like this, because it's used in the famous two-volume textbook by Bjorken and Drell
I still don't get it. Are you saying that Bjorken and Drell lived at the west coast?
 
  • #17
No, as far as I read, they have to do with the "parents of QED, Feynman, and Schwinger". One of them was teaching on the East Coast (Schwinger who used -+++) and the other on the West Coast (Feynman at CalTech who used +---).
 
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