  The characterization of quantum coherence in the context of quantum
information theory and its interplay with quantum correlations is currently
subject of intense study. Coherence in an Hamiltonian eigenbasis yields
asymmetry, the ability of a quantum system to break a dynamical symmetry
generated by the Hamiltonian. We here propose an experimental strategy to
witness multipartite entanglement in many-body systems by evaluating the
asymmetry with respect to an additive Hamiltonian. We test our scheme by
simulating asymmetry and entanglement detection in a three-qubit GHZ-diagonal
state.
