Let
be an elliptic curve defined over a number field
, and let
be a quadratic extension. If the analytic rank of
is one, one can often use Heegner points (or the more general Darmon points) to produce (at least conjecturally) a nontorsion generator of
. If the analytic rank of
is larger than one, the problem of constructing algebraic points is still very open. In very recent work, Michele Fornea and Lennart Gehrmann have introduced certain
-adic quantities that may be conjecturally related to the existence of these points. In this talk I will explain their construction, and illustrate with some numerical experiments that we have been able to carry out that support their conjecture. This is joint work with Michele Fornea and Xevi Guitart.