Almost Ballistic Transport for the Weakly Coupled Fibonacci Hamiltonian
classification
🧮 math-ph
math.DSmath.MPmath.SP
keywords
transportalphacoupledcouplingfibonaccihamiltoniantildeweakly
read the original abstract
We prove estimates for the transport exponents associated with the weakly coupled Fibonacci Hamiltonian. It follows in particular that the upper transport exponent $\tilde \alpha^\pm_u$ approaches the value one as the coupling goes to zero. Moreover, for sufficiently small coupling, $\tilde \alpha^\pm_u$ strictly exceeds the fractal dimension of the spectrum.
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