Concentration phenomena for the fractional relativistic Schrödinger-Choquard equation

We consider the fractional relativistic Schrödinger-Choquard equation (equation presented), where ϵ > 0 is a small parameter, s (0, 1), m > 0, N > 2s, μ (0, 2s), (-δ + m2)s is the fractional relativistic Schrödinger operator, V: ℝN → ℝ is a continuous potential having a local minimum, f: ℝ → ℝ is a continuous nonlinearity with subcritical growth at infinity and F(t) =f0tf(τ)dτ. Exploiting appropriate variational arguments, we construct a family of solutions concentrating around the local minimum of V as ϵ → 0.