  Orbitronics harnesses non-equilibrium densities and flows of electrons
orbital angular momentum (OAM). Although the OAM must be long lived to be
useful in information processing, the mechanisms leading to OAM
non-conservation remain unknown. Here we show that an electric field induces an
intrinsic torque on the OAM mediated by the quantum metric tensor, without
spin-orbit coupling or magnetic fields. The torque vanishes in pseudospin-1/2
systems with particle-hole symmetry but is nonzero in the presence of
nontrivial textures. We discuss implications for topological materials and
strategies for experimental observation.
