Many of the biggest questions in physics can be answered with the help of quantum field theories: They are needed to describe the dynamics of many interacting particles, and thus they are just as important in solid state physics as in cosmology. Often, however, it is extremely complicated to develop a quantum field theoretical model for a specific problem—especially if the system in question consists of many interacting particles.
from General Physics News - Science News, Physics News, Physics, Material Sciences, Science https://ift.tt/37YSBc4
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