%AB: maybe here something needs to be said about the viability of a vector
%AB: potential that grows linearly to infinity.
%Sayan: This is a very good point. I need to think more about this.
%Sayan: Maybe Shinji has something to say about this.
%Sayan: On second thoughts, the energy in the electric fields dilutes the same
%Sayan: way as that for magnetic fields, as seen from eq. (6), and so this is not
%Sayan: a problem, in my opinion.
%Sayan: Also, for A_x, there is a monotonically increasing function of time in
%Sayan: the denominator, so I'm not sure it increases linearly.
%AB: I think we should discuss this in a specific email thread.
%AB: Tina thinks this is not a problem because of a finite horizon,
%AB: but I can't see how this addresses the problem.
%Sayan: I think what Tina means is that since there is a finite horizon
%Sayan: there is an upper limit on t.
%Sayan: But then again, we take a time derivative of the potential to get the
%Sayan: electric field.
%Sayan: But it is important to keep this in mind and discuss in a separate thread,
%Sayan: since I want to be sure that I am not misunderstanding your concern.
%AB: There is an important question: is it ok to treat a uniform cosmological field
%AB: like a constant in a periodic box? In that case, that part of A is not periodic.
%AB: If the A in this new solution is different, can't we just calculate this A?
%Sayan: Let's get back to this later.