Gerhard Hellstern

Quantum computing solution of the Bethe–Salpeter equation for relativistic scalar bound states via tensor-network VQE

Abstract We present a gate-based quantum computing solution of the homogeneous Bethe–Salpeter equation (hBSE) for the bound state of two massive relativistic scalar particles interacting via ladder-approximation scalar exchange. After Wick rotation to Euclidean space and O(4) S-w...