I’m looking for the theoretical calculations of charge and transmon qubit decoherence specifically, but at a high level I'm wondering how decoherence is approached generally.
I’ve seen explanations based on finding the time until the Rabi oscillations decay off as well as arguments that end with a Lindblad equation. Are these all equivalent ways of getting the decoherence rate, or does the approach to decoherence calculations depend on the approach to Quantum Computing (charge qubit vs transmon qubit vs spin qubit vs ion trap etc...)
So to restate my question, when people talk about Linblad vs Rabi, is this two side of the same coin (this is what I'm doubting), or are there specific circumstances that warrant these approaches to decoherence calculations?