122 citations · 613 across the 15 of their papers we have counts for
4 papers · 1 filter
Fast Thermalization from the Eigenstate Thermalization Hypothesis
Chi-Fang Chen, Fernando G. S. L. Brandão
The Eigenstate Thermalization Hypothesis (ETH) has played a major role in understanding thermodynamic phenomena in closed quantum systems. However, its connection to the timescale…
Average-case Speedup for Product Formulas
Chi-Fang, Chen, Fernando G. S. L. Brandão
Quantum simulation is a promising application of future quantum computers. Product formulas, or Trotterization, are the oldest and still remain an appealing method to simulate quan…
Optimal Frobenius light cone in spin chains with power-law interactions
Chi-Fang Chen, Andrew Lucas
In many-body quantum systems with spatially local interactions, quantum information propagates with a finite velocity, reminiscent of the ``light cone" of relativity. In systems wi…
Concentration of OTOC and Lieb-Robinson velocity in random Hamiltonians
Chi-Fang Chen
The commutator between operators at different space and time has been a diagnostic for locality of unitary evolution. Most existing results are either for specific tractable (rando…