Berry connection and curvature
Concept in physics / From Wikipedia, the free encyclopedia
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In physics, Berry connection and Berry curvature are related concepts which can be viewed, respectively, as a local gauge potential and gauge field associated with the Berry phase or geometric phase. The concept was first introduced by S. Pancharatnam[1] as geometric phase and later elaborately explained and popularized by Michael Berry in a paper published in 1984[2] emphasizing how geometric phases provide a powerful unifying concept in several branches of classical and quantum physics.