We consider unitary graphs attached to \(\mathbb{Z}^{d}_{n}\) using an analogue of the Euclidean distance. These graphs are shown to be integral when \(d\) is odd or the dimension \(d\) is even.
Citation
Si Li, Le Anh Vinh. On the Spectrum of Unitary Euclidean Graphs[J], Ars Combinatoria, Volume 110. 275-287. .