Question

Explain variational principle to estimate ground state of a system.

Answer 1

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✔✔ In quantum mechanics, the variational method is one way of finding approximations to the lowest energy eigenstate or ground state, and some excited states.

✔✔ This allows calculating approximate wavefunctions such as molecular orbitals.

✔✔ The basis for this method is the variational principle.

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Answer 2

✔✔ In quantum mechanics, the variational method is one way of finding approximations to the lowest energy eigenstate or ground state, and some excited states.

✔✔ This allows calculating approximate wavefunctions such as molecular orbitals.