Homogeneous gravity field time evolution position and momentum operato

Click For Summary
SUMMARY

The discussion focuses on solving Problem 21 related to the time evolution of position and momentum operators in a homogeneous gravity field. The key equations involve the commutators of the position operator, \(\hat{X}\), and momentum operator, \(\hat{P}\), with the Hamiltonian. The user is seeking guidance on applying equation (5) to derive \(\hat{X}(t)\) and \(\hat{P}(t)\) based on the established commutation relations.

PREREQUISITES
  • Understanding of quantum mechanics, specifically operator algebra.
  • Familiarity with Hamiltonian mechanics and its applications.
  • Knowledge of commutation relations in quantum physics.
  • Ability to manipulate time evolution equations in quantum systems.
NEXT STEPS
  • Study the derivation of time evolution operators in quantum mechanics.
  • Learn about the implications of commutation relations on operator dynamics.
  • Explore the specific applications of Hamiltonians in homogeneous gravitational fields.
  • Review examples of solving similar quantum mechanics problems involving position and momentum operators.
USEFUL FOR

Students of quantum mechanics, physicists working with operator dynamics, and anyone interested in the mathematical foundations of time evolution in quantum systems.

VVS
Messages
85
Reaction score
0

Homework Statement


I am trying to solve Problem 21 from this sheet:
View attachment T2SS14-Ex7.pdf


Homework Equations


The equation describing the time evolution of operators is given in the problem.


The Attempt at a Solution


I have found the commutators of the position and momentum operator with the Hamiltonian.
View attachment Übung 21_3.pdf
I don't know how to do the rest of the exercise.
 
Physics news on Phys.org
(a) See equation (5) relating the commutator to the time evolution to get ##\hat X(t)## and ##\hat P(t)##
(b) follows from there.
 

Similar threads

  • · Replies 28 ·
Replies
28
Views
4K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 16 ·
Replies
16
Views
3K
  • · Replies 23 ·
Replies
23
Views
10K
Replies
4
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 13 ·
Replies
13
Views
3K