So, I was looking at what defines the most interesting type of forcefields, and there came an interesting kind of forcefields that, rather than deflecting or dispersing energy, seems to absorb energy. Niven calls it the Langston Field, while Traveller calls it the White Globe.
Now, a forcefield that can freely absorb energy, is useful not just for defence, but for stealing power to power one's own engines. To be slightly restricting and not be too vague, it is obvious for both cases that the energy in question is just standard radiation, light, heat, electricity and such.
Obviously, I ask for its feasibility, but that would be too much in regards to our world. To give some room for less hardness in its feasibility, we can assume we have mastered lots of particle physics by at least a millennium's worth, where we properly control matter from subatomic particles down to its quarks, and even their antimatter or supersymmetric counterparts. Maybe we even collect dark matter and fundamental force bosons. What ideal particle or force should be used for such a shield?
Or, if that won't work, then we could go back to our multiverse theory I have been making multiple questions of. If some of the four fundamental forces were different in someway, could it be more possible?
Note that it also has to be a particle-based field if anything. Though the one who talked about solar panels, yeah that was really funny.