Figure2

Figure 2. Fundamental symmetries for E and H. (A and B) H is an axial vector. It is odd under time-reversal and even under parity inversion. (C) The symmetry of two antiparallel magnetic fields; both P and T symmetries are broken but PT symmetry is preserved. (D and E) E is a polar vector. It is even under time-reversal and odd under parity inversion.