How to prove this matrix differential for Born-Infeld theory?
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HEYA!!
I am trying to understand this. Is the trace taken before taking the derivative? I would appreciate any help in proving this starting from δtrln(1−(F2)αβ). What matrix identies are to used? … Consider the Born-Infeld Lagrangian, page 30 of Born-Infeld Action and Its Applications by Cong Wang. LBI=det(1+F)−−−−−−−−−√ where Fμν=∂μAν−∂νAμ. I …
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