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I need help (Lagrangian; QED)by khaled khairo
Tags: lagrangian 
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#1
Jul612, 07:35 AM

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I have a problem, and i need help to solve it
i wanted to write the lagrangien quantum electrodynamicsin L= (1/2g^2) Tr[A_mu ,A_nu]^2 the form of code in fortran but before it i wanted to count Tr[A_mu ,A_nu]^2 as we knowA_mu is metrix N by N 


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