Give the postulates of Quantum Mechanics
Answers
Explanation:
The total wavefunction must be antisymmetric with respect to the interchange of all coordinates of one fermion with those of another. Electronic spin must be included in this set of coordinates. The Pauli exclusion principle is a direct result of this antisymmetry principle
Answer:
First postulate of Quantum mechanics:
Every physically-realizable state of the system is described in quantum mechanics by a
state function ψ that contains all accessible physical information about the system in that
state.
Second postulate of Quantum mechanics:
If a system is in a quantum state represented by a wavefunction ψ , then
PdV dV 2
= ψ
is the probability that in a position measurement at time t the particle will be detected in
the infinitesimal volume dV.
Third postulate of Quantum Mechanics:
Every observable in quantum mechanics is represented by an operator which is used to
obtain physical information about the observable from the state function. For an
observable that is represented in classical physics by a function Q(x,p), the corresponding
operator is Q(x, p) .
Fourth (Fundamental) postulate of Quantum mechanics:
The time development of the state functions of an isolated quantum system is governed
by the time-dependent SWE Hψ = ih∂ψ / ∂t
, where H= T+ V is the Hamiltonian of the
system.