We study
the following singularly perturbed nonlocal Schrödinger equation
class="formula" id="fm0010">
where
class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0022039616300559&_mathId=si102.gif&_user=111111111&_pii=S0022039616300559&_rdoc=1&_issn=00220396&md5=624c4a4f135435630643cb939a0b2f28" title="Click to view the MathML source">V(x)class="mathContainer hidden">class="mathCode"> is a continuous real function on
class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0022039616300559&_mathId=si1.gif&_user=111111111&_pii=S0022039616300559&_rdoc=1&_issn=00220396&md5=0ce7621b208768cb77555780a434d92e" title="Click to view the MathML source">R2class="mathContainer hidden">class="mathCode">,
class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0022039616300559&_mathId=si4.gif&_user=111111111&_pii=S0022039616300559&_rdoc=1&_issn=00220396&md5=54842b191f6db5938fd11a23a9d467e3" title="Click to view the MathML source">F(s)class="mathContainer hidden">class="mathCode"> is
the primitive of
class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0022039616300559&_mathId=si100.gif&_user=111111111&_pii=S0022039616300559&_rdoc=1&_issn=00220396&md5=b645d2ec0d7fcb4191cd3e5c2564fb51" title="Click to view the MathML source">f(s)class="mathContainer hidden">class="mathCode">,
class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0022039616300559&_mathId=si6.gif&_user=111111111&_pii=S0022039616300559&_rdoc=1&_issn=00220396&md5=4a106a306794ab7c9fc490a5aad173dd" title="Click to view the MathML source">0<μ<2class="mathContainer hidden">class="mathCode"> and
ε is a positive parameter. Assuming that
the nonlinearity
class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0022039616300559&_mathId=si100.gif&_user=111111111&_pii=S0022039616300559&_rdoc=1&_issn=00220396&md5=b645d2ec0d7fcb4191cd3e5c2564fb51" title="Click to view the MathML source">f(s)class="mathContainer hidden">class="mathCode"> has critical exponential growth in
the sense of Trudinger–Moser, we establish
the existence and concentration of solutions by variational methods.