Fermionic Spectral Functions in a Two-Current Gubser-Rocha Model with Axion Momentum Relaxation
The study investigates how non-minimal fermion couplings reshape holographic excitations in a two-current Gubser-Rocha background with linear axion momentum relaxation. The dipole coupling shows soft reconstruction, while the tensor coupling creates a flat-bottom feature. The vector coupling generates spectral asymmetry, demonstrating that the resulting spectral changes depend on the specific dissipative background parameters.