Exciton condensation, a Bose-Einstein-like condensation of excitons, was recently reported in an electronic double layer (EDL) of graphene. We show that a universal quantum signature for exciton condensation can be used to both identity and quantify exciton condensation in molecular systems from direct calculations of the two-electron reduced density matrix. Computed large eigenvalues in the particle-hole reduced-density matrices of pentacene and hexacene EDLs reveal the beginnings of condensation, suggesting the potential for exciton condensation in smaller scale molecular EDLs.
@article{arxiv.1807.09191,
title = {Quantum signature of exciton condensation},
author = {Shiva Safaei and David A. Mazziotti},
journal= {arXiv preprint arXiv:1807.09191},
year = {2018}
}