%0 Journal Article %T A fractional eigenvalue problem in $\mathbb{R}^N$ %A Giacomo Bocerani %A Dimitri Mugnai %J Mathematics %D 2015 %I arXiv %X We prove that a linear fractional operator with an asymptotically constant lower order term in the whole space admits eigenvalues. %U http://arxiv.org/abs/1506.05697v1