4 problems

Let $A_0$ and $B_r$ be local operators at sites separated by distance $r$ in a one-dimensional spin chain with power-law interactions of exponent $\alpha$, and let…

Consider a spin chain with power-law interactions and let the Frobenius light cone be the lower-bound timescale for the spreading of commutators measured in the Frobenius norm. A v…

Let $t_{\mathrm{F}}(r)$ denote the Frobenius light-cone timescale for local operators separated by distance $r$ in a spin system with power-law interactions decaying with exponent…

Linear decoherence light-cone conjecture. This light cone is linear for