Dynamical Bethe-Salpeter Equation
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All-electron Dynamical Bethe-Salpeter Equation for Extended Systems with Atom-centered Orbital Basis Set
arXiv:2606.08350v1 Announce Type: new Abstract: Solving Bethe-Salpeter equation (BSE) for the two-particle Green's function is the most widely used approach for taking into account the particle-hole (exciton) interaction in electronic excitation in the context of the many-body theory based on Green's function. In BSE calculations, the static approximation to the screened Coulomb interaction kernel is commonly employed. However, when the excitonic character is significant as typically...