131 citations · 912 across the 45 of their papers we have counts for
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math-ph2021★ 7 cited
Stability of invertible, frustration-free ground states against large perturbations
Sven Bachmann, Wojciech De Roeck, Brecht Donvil +1
A gapped ground state of a quantum spin system has a natural length scale set by the gap. This length scale governs the decay of correlations. A common intuition is that this lengt…
math-ph2021
On Kitaev's determinant formula
Alexander Elgart, Martin Fraas
We establish a sufficient condition under which for a pair of bounded, invertible operators on a Hilbert space.