Author

Yan Han

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Preprint Sep 2026

Nonlinear pole topology of slow currents in holographic probe-brane metals

Low-frequency Drude response does not by itself determine which nearly conserved sector carries an electric current. We classify the leading cubic retarded response of an isolated, inversion-symmetric slow vector by its pole topology. Constitutive nonlinearity produces only incoming-frequency poles, whereas nonlinear r...

Yan Han, Xiang-Qian Li · 0 citations

Open access Oct 2026

Infrared consistency of scalar–tensor induced gravitational waves

The interpretation of gravitational-wave spectra generated beyond linear order depends on how infrared metric perturbations are separated from genuine radiative production. We study this question in the scalar–tensor channel of cosmological induced gravitational waves, where a long scalar perturbation with momentum q c...

Yan Han, Xiang-Qian Li · Classical and quantum gravit... · 0 citations

Open access Sep 2026

Distinct trivial phases and topological transitions in an interpolating Aubry-André-Fibonacci p -wave superconducting chain

We investigate the topological properties and their evolution with the interpolation parameter in a generalized interpolating Aubry−Andr´e−Fibonacci (IAAF) model with p -wave superconducting pairing. Analytical phase boundaries are derived for both the AA and Fibonacci limits. In the AA limit, the system undergoe...

Feng-Mei Wang, Xiao-Hua Yang, Jin Yan et al. · Chinese Physics B · 0 citations