New posts in Quantum States

Why can't every quantum state be expressed as a density matrix/operator?

How is Pauli's exclusion principle valid for electrons of two hydrogen atoms in ground state, having same spin?

What happens to a wavefunction upon measurement when there's degeneracy?

What is the difference between a Hilbert space of state vectors and a Hilbert space of square integrable wave functions?

In quantum mechanics, is $|\psi\rangle$ equal to $\psi(x)$?

What is the minimum number of separable pure states needed to decompose arbitrary separable states?

Why does the space of pure qudit states have dimension $2(D-1)$, rather than $D^2-2$?

Why do electrons in singly occupied states have parallel spin?

What is the vector corresponding to a two-particle product state $|\psi\rangle_1|\psi\rangle_2$?

Difference between measurement, state and system in quantum mechanics