To understand these interesting dynamical effects, we can use RT-TDDFTB to analyze in detail the electronic couplings between the NPs in the plasmonic chain. To this end, we plot the RT-TDDFTB absorption spectra of Ag NP dimers with varying interparticle distances in Fig. . On careful observation of Fig. , we note that a single prominent peak, close to the value of the single NP plasmonic energy, can be observed for all interparticle distances. However, for interparticle spacings less than 2 Å, an additional peak (marked with arrows in Fig. ) forms in the absorption spectrum. The prominent peak normally arises due to interactions (hybridizations) between the basic plasmon resonances of the elementary nanostructures (in this case, the single Ag NP). This excitation is the bonding (symmetric) mode, normally known as the Bonding Dipole Plasmon, or BDP, and is characterized by charge oscillations of the NPs in phase with each other. The other peak appearing at lower energies and smaller interparticle distances is normally observed when an optical-frequency conductive pathway is established between two NPs, enabling the transfer of charge between them. This conductive pathway can be physical, due to a physical bridge or due to quantum tunneling. This is known as a Charge Transfer Plasmon, or CTP. Unlike the BDP, the CTP is characterized by a total charge moving between the two nanoparticles of the dimer, which we observe as the lower-energy peak in our absorption spectrum. In our case of non-touching NPs, the CTP excitation can be attributed completely to quantum tunneling that establishes a conductive pathway between the two NPs of the dimer. While charge transfer plasmons have been previously observed theoretically in DFT and quantum-corrected classical models, this is the first example of predicting CTPs using RT-TDDFTB calculations.