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  $U(N)$ gauged quantum mechanics

+ 5 like - 0 dislike

I'm studying the $U(N)$ gauge theory theory in 0+1 dimensions. The aim is to show that this is equivalent to a matrix model. Is there any literature on this topic?

The action I am interested in is

$$ S_E = \int d\tau \text{Tr} \left[ \left( D_\tau \Phi \right)^\dagger \left( D_\tau \Phi \right) + m^2 \Phi^\dagger \Phi\right] $$ where $\Phi$ is an adjoint matter field and $S_E$ is the Euclidean action. Also $$ D_\tau \Phi = \partial_\tau \Phi + \left[A_\tau, \Phi\right] $$ We gauge fix using $\partial_\tau A_\tau = 0$. I want to be able to describe this system in terms of a matrix model $U \in U(N)$.

This post imported from StackExchange Physics at 2014-08-11 14:52 (UCT), posted by SE-user Prahar
asked May 2, 2013 in Theoretical Physics by prahar21 (545 points) [ no revision ]
retagged Aug 11, 2014
Your action $S_E$ already describes a matrix model (You are using traces....), and this action should be invariant by global transformations $Φ = U Φ U_{-1}, A_{\tau} = U A_{\tau} U_{-1}$, where U, constant, belongs to U(N)$

This post imported from StackExchange Physics at 2014-08-11 14:52 (UCT), posted by SE-user Trimok

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