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9  Ex. 1.4  anticommutation relation  anticommutation relations [a,a]_{+}=0 and  R. N. Mohapatra, U of Maryland, College Park 
12  Eq. (2.3)  The last term, containing the partial time derivative, should be deleted since the variations of q are being taken at a given time. In the text following this equation, the sentence "We will assume .... vanishes" should be deleted as well.  Shamik Gupta, Calcutta University  
17  Ex. (2.3)  The first term in the Lagrangian has both vector indices as subscripts. One of them should be a superscript.  M. B. Einhorn, U of Michigan  
41  Eq. (3.64)  d^{4}x  d^{4}xʼ  R. P. Malik, S N Bose Centre, Calcutta 
43  Eq. (3.80)  E_{pʼ}  E_{p}  R. P. Malik, S N Bose Centre, Calcutta 
57  Eq.(4.61)
and (4.62) 
v_{+}
v_{} 
v_{}
v_{+} to match with other texts (note). 
M. B. Einhorn, U of Michigan 
60  Ex. (4.16)  Show that it is impossible to find a linear combination of the uspinors of Eq. (4.60) that would be an eigenstate of _{5}, unless the fermion is massless. Further, for a massless fermion, show that the eigenstates of _{5} are the helicity eigenstates.  
63  Eq. (4.89)  
63  Ex. (4.19)  Add the following Hint to the problem:
You will have to use Eq. (4.101). 

66  Eq. (4.108)  d^{4}x  d^{4}xʼ  R. P. Malik, S N Bose Centre, Calcutta 
118  Ex. 7.4  with h substituted by hʼ  with h^{2} substituted by hʼ^{2} / (1  4m^{2}/M^{2}) 
Gabriel SanchezColon, CINVESTAV, Mexico 
146  Eq. (8.21)  M^{2}  ½M^{2}  
149  Eqs. (8.32), (8.33) 
There should not be any minus sign on the right hand side.  Sean Murray, National University of Ireland, Galway  
154  After Eq. (8.55)  Delete the text "Notice the negative .... signflipped commutator."  
154  After Eq. (8.57)  This is related to the problem of the signflipped commutator of A_{0} with Pi_{0}  This is related to the wrong normalization of epsilon_{0} as shown in Eqs. (8.47) and (8.48)  
157  Eq. (8.71)  There should be a minus sign in front of the quantity on the right hand side.  Sergio Gaudio, Boston College  
238  Eq. 11.94  W_{1} =  ½ q^{2} (F_{1} + 2m_{p} F_{2})^{2}  W_{1} = ½ q^{2} (F_{1}  2m_{p} F_{2})^{2}  
300  Eq. (13.64), 2nd line  In the denominator of the last term, the quantity 2k.k' has the wrong sign. It should be +2k.k' instead of 2k.k'.  Rashidul Islam, S. N. Bose Center, Calcutta  
314  Fig 14.1  In the Feynman rule for the quartic coupling, the overall sign in front of the second line should be negative.  
325  Eq (15.5)  The structure function factor in the rightmost term should be f_{bca} instead of f_{abc}. These two are equal for hermitian geneators, but not for the nonhermitian generators used here.  
327  Eq. (15.23) 


C. S. Aulakh, Punjab University, Chandigarh 
328  Eq. (15.24) 



333  Eq (15.47), 2nd line  There should be a factor of γ_{5} on the right side of the equation as well.  William Kaufmann, Arizona State University, Tempe  
341  after Eq. (15.79)  The g_{A}g_{V} terms coming from here will contain only one trace ... added with the complex conjugate term, they will vanish  The g_{A}g_{V} terms will vanish because they multiply one trace which is symmetric in the Lorentz indices and another which is antisymmetric,  
357  Eq. (A.31)  There should be a minus sign in front of the quantity on the right hand side.  Monica Deep, Punjab University, Chandigarh 
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3  Line 9  creation annihilation of  creation annihilation of  R. P. Malik, S N Bose Centre, Calcutta 
44  Line 7 after Eq. (3.83)  particle time tʼ  particle time tʼ  R. P. Malik, S N Bose Centre, Calcutta 
53  Ex. 4.5  _{0} (since not defined until Eq. 4.46 on page 54)  S. Mukherji, Institute of Physics, Bhubaneshwar  
54  Ex 4.7  Eq. (4.47), by  Eq. (4.47), by  
85  last line  particle  particle  R. P. Malik, S N Bose Centre, Calcutta 
89  Line 10  the points  the points  R. P. Malik, S N Bose Centre, Calcutta 
115  Ex 7.2  more general when  more general when  
195  7th line from bottom  electroelectron scattering  electroelectron scattering  
205  1st line  transforms same way  transforms same way  
253  5th line after Eq 12.31  at both vertices  at both vertices  
340  Line 6  the electron  the electron  
364  Index entry for Dirac matrices, contraction formulas  173  174  
Back cover: Box, Line 2  textbook  textbook  
Back cover: Box, Line 10  wek  wek 