作者: M. Titov , C. W. J. Beenakker
DOI: 10.1103/PHYSREVLETT.85.3388
关键词: Transformation matrix 、 Analytic continuation 、 Power law 、 Pulse (physics) 、 Physics 、 Exponent 、 Spectral density 、 Scattering 、 Waveguide (acoustics) 、 Quantum mechanics
摘要: The average power spectrum of a pulse reflected by disordered medium embedded in an N-mode waveguide decays time with law t(-p). We show that the exponent p increases from 3 / 2 to after N2 scattering times, due onset localization. compare two methods arrive at this result. first method involves analytic continuation imaginary absorption rate static problem. second solution Fokker-Planck equation for frequency dependent reflection matrix, means mapping onto problem non-Hermitian quantum mechanics.