Graduate Why does equation 35.21 have an extra minus sign?

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The discussion centers on the confusion regarding an extra minus sign in equation 35.21. It suggests that this discrepancy may stem from an error in algebraic manipulation. Participants recommend double-checking calculations to identify the mistake. Seeking assistance from someone with stronger algebra skills is also advised. Clarifying this issue is essential for accurate results in the equations.
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Hi,everybody,I'm reading Srednicki's qft textbook,and I'm puzzled by the calculation about spinor indices.I can't realize Eq35.21.
Eq35.17 and 35.18 is obtained,but the result of Eq35.21 I obtained has an extra minus sign,I don't know what's wrong of my calculation,so I hope some people much more smarter can figure it out.Thanks.
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The minus sign in equation 35.21 is most likely due to a mistake in the algebraic manipulation of the equation. You can try double-checking your work to see if you can spot where the error is, or you can try consulting with someone else who is better at algebra to help you find the mistake.
 

Thread 'Two equivalent statements of time reversal symmetric Hamiltonian'

Time reversal invariant Hamiltonians must satisfy ##[H,\Theta]=0## where ##\Theta## is time reversal operator. However, in some texts (for example see Many-body Quantum Theory in Condensed Matter Physics an introduction, HENRIK BRUUS and KARSTEN FLENSBERG, Corrected version: 14 January 2016, section 7.1.4) the time reversal invariant condition is introduced as ##H=H^*##. How these two conditions are identical?
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