129 citations · 435 across the 21 of their papers we have counts for
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math-ph2023★ 5 cited
Classical correspondence beyond the Ehrenfest time for open quantum systems with general Lindbladians
Felipe Hernández, Daniel Ranard, C. Jess Riedel
Quantum and classical systems evolving under the same formal Hamiltonian may dramatically differ after the Ehrenfest timescale , even as $\hbar \to 0…
quant-ph2023★ 1 cited
Ehrenfest's theorem beyond the Ehrenfest time
Felipe Hernández, Daniel Ranard, C. Jess Riedel
In closed quantum systems, wavepackets can spread exponentially in time due to chaos, forming long-range superpositions in just seconds for ordinary macroscopic systems. A weakly c…
quant-ph2023
A spin-energy operator inequality for Heisenberg-coupled qubits
Daniel Ranard, C. Jess Riedel
We slightly strengthen an operator inequality identified by Correggi et al. that lower bounds the energy of a Heisenberg-coupled graph of spins using the total spin. In par…