Fig. 5: Entanglement spectral form factor.
From: Quantum computing universal thermalization dynamics in a (2 + 1)D Lattice Gauge Theory

The average entanglement spectral form factor across various initial states, symmetry sectors, and three distinct regimes Early (E), Intermediate (I), and Late (L) identified in Fig. 4. The figures display exact results (black curves), infinite-measurement outcomes (cyan), and quantum-computed experimental data (orange). In panel (L), a purple dotted line indicates a power-law fit of the ramp observed in the quantum-computed data. Our normalization ensures \(\langle {{{\mathcal{F}}}}(0)\rangle=1\), with the plateau occurring at \(\langle {{{\mathcal{F}}}}(\infty )\rangle=1/{d}_{s}\), where ds denotes the dimension of a symmetry block, see the Methods section for details. Shaded areas indicate the standard deviation over initial states, symmetry sectors, and times. Data included in the fit are shown as circles.