Why is a quantum state described by a complex vector in the Hilbert space?
8539
About the complex nature of the wave function?
103579
Why are the zeroth order terms in degenerate perturbation theory the eigenstates of the perturbing Hamiltonian?
20503
Meaning of inner product $\langle \vec{r} | \psi(t)\rangle $
155176
Tensor product vs. Cartesian Product for composite quantum systems
25641
Is there a direct physical interpretation for the complex wavefunction?
18839
Proof about inner product space $\vert \langle x,y\rangle \vert=\Vert x \Vert\Vert y \Vert$
131906
"An operator is hermitian". Implications?
95481
The set of self-adjoint operators over a Hilbert space doesn't form a lattice
137319
How is the joint state of these qubits derived?
26417
Why do we use Hermitian operators in QM?
124703
Where does the $i$ come from in the Schrödinger equation?
37887
What does the Pauli Exclusion Principle say about a superposition of spin states?
63032
Why is it true that every finite-dimensional inner product space is a Hilbert space?
71105
How is Grover's operator represented as a rotation matrix?
51736
When is a quantum state stationary?
16692
a representation condition of Hilbert space
149592
Why do we say that irreducible representation of Poincare group represents the one-particle state?