Ground state

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The ground state is the lowest possible energy state for a given substance.[1]

In Quantum Physics, ground state refers to the stationary state of lowest energy available to a quantum system, where the stationary states are eigenstates of the Hamiltonian operator, which usually (but not always) yields eigenstates of energy that are stationary in the sense that the do not depend on time.


  1. Wile, Jay L. Exploring Creation With Chemistry. Apologia Educational Ministries, Inc. 1998