Ballentine 3.11

  • Thread starter Fredrik
  • Start date
  • #1
Fredrik
Staff Emeritus
Science Advisor
Gold Member
10,851
406

Main Question or Discussion Point

Top of page 69. I get six second order terms. Two of them cancel. Two are the ones on the right of 3.11. The other two involve KμKμ and KνKν. Why are there no such terms on the right of 3.11? I'm probably just missing something painfully obvious.
 

Answers and Replies

  • #2
1,744
48
Actually, there are more than 6 second-order terms. In order to see all of them, write each exponent as

[tex] e^{i \epsilon K_{\mu}} = 1 + i \epsilon K_{\mu} -1/2 \epsilon^2 K_{\mu}^2 + \ldots[/tex]
 
  • #3
Fredrik
Staff Emeritus
Science Advisor
Gold Member
10,851
406
Thank you. At least I was right about something: I did miss something painfully obvious. :redface:
 

Related Threads for: Ballentine 3.11

  • Last Post
Replies
8
Views
1K
Replies
14
Views
1K
  • Last Post
Replies
1
Views
519
  • Last Post
Replies
15
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
2
Replies
44
Views
4K
Top