Angular momentum in bracket notation

Click For Summary
SUMMARY

The inner product of angular momentum eigenstates in quantum mechanics, represented as , equals zero when j ≠ j' or m ≠ m'. This result confirms that angular momentum eigenstates form an orthogonal set, meaning that the inner product is non-zero only when both quantum numbers are identical. This principle is foundational in quantum mechanics and is crucial for understanding the behavior of angular momentum in various physical systems.

PREREQUISITES
  • Quantum mechanics fundamentals
  • Angular momentum theory
  • Orthogonality in Hilbert spaces
  • Spherical harmonics and their properties
NEXT STEPS
  • Study the properties of angular momentum operators in quantum mechanics
  • Explore the mathematical formulation of spherical harmonics
  • Learn about the implications of orthogonality in quantum states
  • Investigate the role of angular momentum in quantum systems
USEFUL FOR

Students and professionals in physics, particularly those focusing on quantum mechanics, as well as researchers studying angular momentum and its applications in various fields.

Alexis21
Messages
6
Reaction score
0
Hello,

why is

<j' m' | j m>=0

if

j \not= j' \; \text{or} \; m \not= m'

j and m are describing states. I don't understand why an 'empty bracket' behaves like that.
 
Physics news on Phys.org

Similar threads

  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 11 ·
Replies
11
Views
2K
  • · Replies 5 ·
Replies
5
Views
1K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 0 ·
Replies
0
Views
2K
  • · Replies 14 ·
Replies
14
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 1 ·
Replies
1
Views
1K