On a fractional magnetic Schr\'odinger equation in $\mathbb{R}$ with exponential critical growth

We deal with a class of fractional magnetic Schr\"odinger equations in the whole line with exponential critical growth. Under a local condition on the potential, we use penalization methods and Ljusternik-Schnirelmann category theory to investigate the existence, multiplicity and concentration of nontrivial weak solutions.
Comment: arXiv admin note: text overlap with arXiv:1807.07444, arXiv:1801.00199, arXiv:1808.09295