  Quantum coherence reflects the origin of quantumness and might be capable of
extracting the subtle nature of a system. We investigate the ground-state
coherence and steered coherence in the Lipkin-Meshkov-Glick model and show that
they detect faithfully the quantum phase transitions of this model. Moreover,
we carry out scaling analysis on the coherence and steered coherence by means
of the continuous unitary transformation method and it is found that the
scaling exponents are uniquely determined by the phase region of this model.
These results may provide useful insights into the mechanism underlying quantum
criticality in many-body systems.
