
Corrections to Problem Solutions for Volume 2 of
Student
Friendly Quantum Field Theory: The
Standard Model 
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by Page Number: This
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by Date Posted: Click Here 
Significant Corrections (may impact learning process)
Pg 
Date Posted 
Significant Correction 
Reported by (blank
= the author) 
21 
Feb 11 2022 
Prob. 2: At beginning of problem statement insert
“For the following, assume the appropriate distributive properties exist
between operators”. In 2^{nd} line, before “operation” insert
“multiplication” 
Nadeem Afana 
24 
Feb 11 2022 
Prob. 10, next to last line: Change “A” to “B” 
Nadeem Afana 
211 
Feb 11 2022 
Prob. 23: In large bracketing expression in
midpage, 1^{st} and last lines, last factor, insert “2” in the
exponents. In the expression right above “So,”, the row and column vectors at
the end need to switch “0” and “1” components. 
Nadeem Afana 
214 
Feb 20 2022 
Prob. 29. Delete the sentence “Then find …
antiquark.” Also delete the third part solution and relabel the fourth and
fifth parts as third and fourth. 
Luc Longtin 
31 
Feb 24, 2022 
Prob. 1, last line of problem statement: change “ds”
to “dy”: 2 places 
Nadeem Afana 
33 
Feb 24, 2022 
Prob. 6, eq (B): scripts on photon propagators
should be subscript on first one and subscript on the second. Insert gamma matrix with
superscript after the first photon propagator. Insert
gamma matrix with superscript before the second photon propagator. Then,
lower the ^{}^{.} on Green function in (B), (C), and (D) 
Nadeem Afana 
34 
March 19, 2022 
Prob. 7, last line: change all less than or equal to
signs to < . 
Nadeem Afana 
42 
March 19, 2022 
Prob. 2, 1^{st} and last lines: Change
(422) to (423). 
Nadeem Afana 
Minor Corrections (should not impact learning process)
Pg 
Date Posted 
Minor Correction 
Reported by 
iii 
Dec 3 2021 
In Acknowledgements section, 2^{nd} line: change “very” to
“every” 
Susan Klauber 
11 
Feb 11 2022 
Prob. 1, Ans. (third part): After “e”, insert “and the gamma matrix” 
Nadeem Afana 
23 
Feb 19 2022 
Prob. 8. Change U()
everywhere to U(1). 3 places. One third line, insert “a” before
“complex”. 
Luc Longtin 
28 
Feb 11 2022 
Prob. 18, Ans., after 2^{nd} equal sign after M^daggerM: one
exponent has theta_2. Change to phi_2 
Nadeem Afana 
29 
Feb 11 2022 
Prob. 19, Ans, in equation after “and”, end of 2^{nd} line:
change derivative wrt alpha_0 to wrt alpha_8 
Nadeem Afana 
213 
Feb 19 2022 
Prob. 25, first two lines of equations: At end, change subscript “d”
to “e”, two places 
Luc Longtin 
31 
Feb 24, 2022 
Prob. 2, 1^{st} line of answer: Change period between x and y
to comma. 
Nadeem Afana 
41 
March 19, 2022 
Prob. 1, equation (C), under “Frist part of (A)”: insert subscript i
on “k” 
Nadeem Afana 
43 
March 19, 2022 
Prob. 3, next to last line of solution: before “the inverse”, insert “i
times” 
Nadeem Afana 