Source: wikibot/variational-method-quantum-mechanics
= Variational method (quantum mechanics)
{wiki=Variational_method_(quantum_mechanics)}
The variational method is a computational technique used in quantum mechanics to approximate the ground state energy and wave function of a quantum system. It is particularly useful for systems where exact solutions of the Schrödinger equation are not possible, such as many-body systems or complex potentials. The variational principle forms the foundation of this method.