The spin contribution to the form factor of quantum graphs
نویسندگان
چکیده
Following the quantisation of a graph with the Dirac operator (spin-1/2) we explain how additional weights in the spectral form factor K(τ) due to spin propagation around orbits produce higher order terms in the small-τ asymptotics in agreement with symplectic random matrix ensembles. We determine conditions on the group of spin rotations sufficient to generate CSE statistics. E-mail address: [email protected] E-mail address: [email protected]
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