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Results tagged with greens-functions
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user 159072
A Green's function is the impulse response of an inhomogeneous differential equation defined on a domain, with specified initial conditions or boundary conditions, thereby restricting that equation's fundamental solution. In QFT, it is essentially the propagator.
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Integrating a function defined in Matsubara frequencies
I am writing a code for the numerical evaluation of susceptibilities. The formalism is explicitly written on the Matsubara axis (fermionic case) and in the heart of the procedure lie multiple integrat …
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