Physics, asked by David8310, 11 months ago

Give the postulates of quantum mechanics.

Answers

Answered by shobha2515
0
Postulate 1. The state of a quantum mechanical system is completely specified by a function  that depends on the coordinates of the particle(s) and on time. This function, called the wave function or state function, has the important property that  is the probability that the particle lies in the volume element  located at  at time .

Postulate 2. To every observable in classical mechanics there corresponds a linear, Hermitian operator in quantum mechanics.

Postulate 3. In any measurement of the observable associated with operator , the only values that will ever be observed are the eigenvalues , which satisfy the eigenvalue equation


Postulate 4. If a system is in a state described by a normalized wave function , then the average value of the observable corresponding to is given.


Postulate 5. The wavefunction or state function of a system evolves in time according to the time-dependent Schrödinger equation


Postulate 6. 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.




Answered by Anonymous
2
The postulates of quantum mechanics are :-

1. Related with any molecule moving in a preservationist field of power is a wave work which decides everything that can be thought about the framework.

2. With each physical recognizable q there is related an administrator Q, which while working upon the wavefunction related with an unmistakable estimation of that noticeable will yield that esteem times the wavefunction.

3. Any administrator Q related with a physically quantifiable property q will be Hermitian.

4. The arrangement of eigenfunctions of administrator Q will shape an entire arrangement of straightly autonomous capacities.

5. For a framework depicted by a given wavefunction, the desire estimation of any property q can be found by playing out the desire esteem necessary as for that wavefunction.

6. The time development of the wavefunction is given when subordinate Schrodinger condition.
Similar questions