Experimental Study of Active LRC Circuits with PT-Symmetries

Autor:	Schindler, Joseph, Li, Ang, Zheng, Mei C., Ellis, F. M., Kottos, Tsampikos
Rok vydání:	2011
Předmět:	Condensed Matter - Other Condensed Matter Quantum Physics
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevA.84.040101
Popis:	Mutually coupled modes of a pair of active LRC circuits, one with amplification and another with an equivalent amount of attenuation, provide an experimental realization of a wide class of systems where gain/loss mechanisms break the Hermiticity while preserving parity-time PT symmetry. For a value PT of the gain/loss strength parameter the eigen-frequencies undergo a spontaneous phase transition from real to complex values, while the normal modes coalesce acquiring a definite chirality. The consequences of the phase-transition in the spatiotemporal energy evolution are also presented. Comment: 4 pages, 4 figures, Rapid Communication in Physical Review A (2011)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1109.2913 Zobrazit plný text záznamu View this record from Arxiv