New posts in Hamiltonian

Lagrange multiplier in spin liquid mean-field theory (Paper by X.G. Wen)

Can the Hamiltonian operator act on a bra, if it was once acting on a ket?

In the quantum hamiltonian, why does kinetic energy turn into an operator while potential doesn't?

In quantum mechanics, why is $\langle T\rangle=\frac{\langle p^2 \rangle}{2m}$ rather than $\langle T\rangle=\frac{\langle p \rangle^2}{2m}$?

How can I say whether a Hamiltonian is integrable or not?

How do contact transformations differ from canonical transformations?

Multi-electron Atom

Can we always express the EM-Field Hamiltonian as (possibly time dependent) pair of annihilation and creation operators?

How is an operator applied to a wavefunction in quantum mechanics?

What is the Hamiltonian of General Relativity?