The principle of mirror symmetry, which states that nuclear structure remains the same when protons are swapped for neutrons and vice versa, has been found to be broken in the lowest-energy forms ...

In general usage, symmetry most often refers to mirror or reflective symmetry; that is, a line (in 2-D) or plane (in 3-D) can be drawn through an object such that the two halves are mirror images ...

"Mirror symmetry already exists in vector optical ... fields and spin angular momentum and energy flow in the focal plane. We first propose the kaleidoscope-structured vector optical fields ...