Here we present a many-body theory based on a solution of the N-representability problem
in which the ground-state two-particle reduced density matrix (2-RDM) is determined directly …

Exciton condensation, the Bose–Einstein-like condensation of quasibosonic particle-hole
pairs, has been the subject of much theoretical and experimental interest and holds promise …

Bose-Einstein condensation of excitons, in which excitons condense into a single coherent
quantum state, known as an exciton condensate, enables frictionless energy transfer, but …

This work assesses the reliability of the recently proposed [M. Piris, Phys. Rev. Lett. 127,
233001 (2021)] global natural orbital functional (GNOF) in the treatment of the strong …

Recent experiments have realized exciton condensation in bilayer materials such as
graphene double layers and the van der Waals heterostructure MoSe2–WSe2 with the …

Exciton binding energies are fundamental to understanding excitonic materials, especially
those with the potential for ground-state exciton condensation. However, these energies are …

An outstanding challenge in synthesis and theory is to develop molecular materials at
ambient conditions that exhibit highly efficient energy transfer. Here we demonstrate the …

The Bose-Einstein condensation of excitons into a single quantum state is known as exciton
condensation. Exciton condensation, which potentially supports the frictionless flow of …

Quantum states of a novel Bose-Einstein condensate, in which both fermion-pair and exciton
condensations are simultaneously present, have recently been realized theoretically in a …

Exciton condensation, a Bose–Einstein condensation of excitons into a single quantum
state, has recently been achieved in low-dimensional materials including twin layers of …