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fluidistic
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I'm trying to go through Mattuck's book "A guide to Feynman diagrams in the many-body problem", the Dover's 2nd edition book.
I have read that apparently it has been criticized for being way too easy. I'm having an extremely hard time going through the 3rd chapter, let alone the 4th! I feel like it started as 1+1=2, then next page there are ##10^{23}## Feynman diagrams thrown in your face. The learning curve is steeper than a skyscraper.
Nevertheless, I created this thread to point out possible mistypes and errors of the book. And also for you people to help me out when I'm lost.
Here are my current comments:
Page 53, in the right hand side of expression 3.49, should ##(t-t')## be ##\delta(t-t')##? (I guess so, trivially).
Page 28:
(I do remember having spotted another typo, but I forgot where).
Now something more serious. Page 43, about the expressions that are after eq. 319.
Mattucks claims that ##H\approx m_0c^2+\frac{p^2}{2m_0}-\frac{p^4}{8m_0^3c^2}## and that if we define ##m_0=m+m_e##, one gets that ##H\approx (m+m_e)c^2 + \frac{p^2}{2m} - \frac{m_e}{(m_e+m)m}p^2 - \frac{p^4}{8(m+m_2)^3c^2}##. But I do not get that at all! I get that this would be true if some of the masses were either 0 or infinity, but this is certainly not what Mattuck had in mind.
Had Mattuck made a mistake here? If so, how can we fix it so that his assertion holds: namely that this latter Hamiltonian has the form of eq. 319 (except for the unimportant constant)?
I have read that apparently it has been criticized for being way too easy. I'm having an extremely hard time going through the 3rd chapter, let alone the 4th! I feel like it started as 1+1=2, then next page there are ##10^{23}## Feynman diagrams thrown in your face. The learning curve is steeper than a skyscraper.
Nevertheless, I created this thread to point out possible mistypes and errors of the book. And also for you people to help me out when I'm lost.
Here are my current comments:
Page 53, in the right hand side of expression 3.49, should ##(t-t')## be ##\delta(t-t')##? (I guess so, trivially).
Page 28:
. Should it read "(...) the particle begins at ##r_1##(...)"? Again, I guess so, trivially.Mattuck said:(...) and consider just ##P(r_2,r_1)##; this is the probability that if the particle begins at ##r_2##, it will finish at ##r_2## regardless of the time
(I do remember having spotted another typo, but I forgot where).
Now something more serious. Page 43, about the expressions that are after eq. 319.
Mattucks claims that ##H\approx m_0c^2+\frac{p^2}{2m_0}-\frac{p^4}{8m_0^3c^2}## and that if we define ##m_0=m+m_e##, one gets that ##H\approx (m+m_e)c^2 + \frac{p^2}{2m} - \frac{m_e}{(m_e+m)m}p^2 - \frac{p^4}{8(m+m_2)^3c^2}##. But I do not get that at all! I get that this would be true if some of the masses were either 0 or infinity, but this is certainly not what Mattuck had in mind.
Had Mattuck made a mistake here? If so, how can we fix it so that his assertion holds: namely that this latter Hamiltonian has the form of eq. 319 (except for the unimportant constant)?
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