1205.2820 (A. A. Zyablovsky et al.)

Comment on "Symmetry Breaking and Laser-Absorber Modes in Optical
Scattering Systems"    [PDF]

A. A. Zyablovsky, A. P. Vinogradov, A. V. Dorofeenko, A. A. Pukhov, A. A. Lisyansky

We show that PT-symmetry may exist only for isolated frequencies in optical systems. Therefore, PT-symmetry breaking transitions as the frequency is tuned up, discussed in Y. D. Chong, L. Ge, and A. D. Stone, Phys. Rev. Lett. 106, 093902 (2011), cannot be observed in measurements of the spectrum of scattered intensity.

View original: http://arxiv.org/abs/1205.2820