The unitary contribution from weak system-bath coupling in collision-model thermal state preparation tightens the fixed-point error bound, scaling rigorously as J² where J is the coupling strength.
Z T /2+x −T /2 dt∥V(t)∥ ∞ #4 . (C8) 17 Odd orders inJvanish after tracing out the bath degrees of freedom. At orderJ 2, there are three contribu- tions: TrB
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Rigorous error bounds for dissipative thermal state preparation from weak system-bath coupling
The unitary contribution from weak system-bath coupling in collision-model thermal state preparation tightens the fixed-point error bound, scaling rigorously as J² where J is the coupling strength.