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comment Why is $\textbf{D}$ the response to $\textbf{E}$?
@von_sohn Sorry about the earlier comment. If I had to take a stab in the dark at guessing the answers to some of your deeper questions, I would say: 1. You apply $\bf{E}$. 2. You induce $\bf{P}$. 3. I think you first have to solve for $\bf{D}$ and then later find $\bf{E}$, but I'm not sure. Not sure how to interpret that integral.
Oct
15
comment Why is $\textbf{D}$ the response to $\textbf{E}$?
To clarify something: He doesn't say that $\textbf{D}$ is the external field $\textbf{E}^{\text{ext}}$, he says that the total field is the sum of $\textbf{E}^{\text{ext}}$ and $\textbf{E}^{\text{ind}}$, where the first comes from $\textbf{D}$ and the second from $\textbf{P}$.
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