The Zero Point Field gets some coverage in The Perfect Discourse, here Hermes discusses The Void.
I consider that there is no void, there never could have been a void and there never will be a void. All parts of the cosmos are totally full, so that the cosmos itself is full and complete with bodies that differ in both form and quality; and each has its own appearance and size. One may be larger than another and one smaller; one may be more dense and another more subtle. Those that are more dense are more easily seen, as are those which are larger. Those that are smaller or subtler can only be seen with difficulty and sometimes not at all. These we know of only by keen attention.