adiabatic computation 1Heisenberg model 1lee-yang zeros 1quantum algorithms 1spectral gap 1spin systems 1
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quant-ph2026
Efficient quantum algorithm for Heisenberg spin systems
Sergey Bravyi, David Gosset, Yinchen Liu +1
The paper proves a lower bound on the spectral gap of a broad class of Heisenberg spin Hamiltonians and uses this to design an efficient quantum adiabatic algorithm for estimating…
quant-ph2026
Lee-Yang tensors and Hamiltonian complexity
Benjamin Wong, Sergey Bravyi, David Gosset +1
A complex tensor with binary indices can be identified with a multilinear polynomial in complex variables. We say it is a Lee-Yang tensor with radius if the polynomial…