Quantcast
  • Register
PhysicsOverflow is a next-generation academic platform for physicists and astronomers, including a community peer review system and a postgraduate-level discussion forum analogous to MathOverflow.

Welcome to PhysicsOverflow! PhysicsOverflow is an open platform for community peer review and graduate-level Physics discussion.

Please help promote PhysicsOverflow ads elsewhere if you like it.

News

PO is now at the Physics Department of Bielefeld University!

New printer friendly PO pages!

Migration to Bielefeld University was successful!

Please vote for this year's PhysicsOverflow ads!

Please do help out in categorising submissions. Submit a paper to PhysicsOverflow!

... see more

Tools for paper authors

Submit paper
Claim Paper Authorship

Tools for SE users

Search User
Reclaim SE Account
Request Account Merger
Nativise imported posts
Claim post (deleted users)
Import SE post

Users whose questions have been imported from Physics Stack Exchange, Theoretical Physics Stack Exchange, or any other Stack Exchange site are kindly requested to reclaim their account and not to register as a new user.

Public \(\beta\) tools

Report a bug with a feature
Request a new functionality
404 page design
Send feedback

Attributions

(propose a free ad)

Site Statistics

205 submissions , 163 unreviewed
5,082 questions , 2,232 unanswered
5,353 answers , 22,789 comments
1,470 users with positive rep
820 active unimported users
More ...

  How to find the BRST transformation for a given infinitesimal transformation?

+ 1 like - 0 dislike
762 views

Looking for examples of BRST problems and examples I have found something like this 


Consider the following infinitesimal transformations

$$\delta_\epsilon A_\mu=\partial_\mu \varepsilon_0+[\varepsilon_0,A_\mu]$$

$$\delta_\epsilon B_\mu=[\varepsilon_0,B_\mu]+\partial_\mu \varepsilon_1+[\varepsilon_1,A_\mu]$$

Find the BRST transformations for the fields, including the transformation for the ghost (corresponding to the parameters $\varepsilon_0$, $\varepsilon_1$), the two antighost and the two Nakanishi-Lautrup fields.

So, the first transformation is the usual one for a non-abelian gauge field but the second transformation depends on $A_\mu$ also.
Is this a known model?
How I must proceed? I have tried to do $\varepsilon_a=\lambda_b C_b$ , $b=0,1$ and

$$\delta_\epsilon B_\mu=\lambda_1\delta_{BRST}B_\mu$$

Please give some reference if this is a transformation for a known lagrangian.

asked Jun 25, 2017 in Theoretical Physics by Mike [ no revision ]
recategorized Jun 25, 2017 by Dilaton

Your answer

Please use answers only to (at least partly) answer questions. To comment, discuss, or ask for clarification, leave a comment instead.
To mask links under text, please type your text, highlight it, and click the "link" button. You can then enter your link URL.
Please consult the FAQ for as to how to format your post.
This is the answer box; if you want to write a comment instead, please use the 'add comment' button.
Live preview (may slow down editor)   Preview
Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
If you are a human please identify the position of the character covered by the symbol $\varnothing$ in the following word:
p$\hbar$ysicsOverf$\varnothing$ow
Then drag the red bullet below over the corresponding character of our banner. When you drop it there, the bullet changes to green (on slow internet connections after a few seconds).
Please complete the anti-spam verification




user contributions licensed under cc by-sa 3.0 with attribution required

Your rights
...