Strongly quasipositive links are concordant to infinitely many strongly quasipositive links

Abstract: We show that every strongly quasipositive link other than an unlink is smoothly concordant to infinitely many (pairwise non-isotopic) strongly quasipositive links. In contrast to our result, it was conjectured by Baker that smoothly concordant strongly quasipositive fibered knots are isotopic. Our construction uses a satellite operation whose companion is a slice knot with maximal Thurston-Bennequin number -1.