Linear Operator: Eigenfunctions and Boundary Conditions for Energy Calculation

Click For Summary
SUMMARY

The discussion centers on the linear operator defined as L = -i(x(d/dx) + 1/2), which is Hermitian. The eigenfunctions are expressed as y_{n}(x) = Ax^{i\lambda_{n} - 1/2}. The main inquiry involves determining the energy levels by imposing boundary conditions, specifically y(0) = Y(L) = 0, where L is a positive integer. It is concluded that due to the nature of the first-order operator, only one boundary condition can be satisfied, complicating the energy calculation.

PREREQUISITES
  • Understanding of Hermitian operators in quantum mechanics
  • Familiarity with eigenfunctions and eigenvalues
  • Knowledge of boundary conditions in differential equations
  • Basic concepts of linear algebra and operator theory
NEXT STEPS
  • Study the properties of Hermitian operators in quantum mechanics
  • Learn about boundary value problems and their applications
  • Explore the implications of first-order differential operators
  • Investigate energy quantization in quantum systems
USEFUL FOR

Students and professionals in physics, particularly those focusing on quantum mechanics, mathematical physics, and applied mathematics, will benefit from this discussion.

lokofer
Messages
104
Reaction score
0
let be the linear operator: (Hermitian ??)

[tex]L = -i(x\frac{d}{dx}+1/2)[/tex]

then the "eigenfunctions" are [tex]y_{n} (x)=Ax^{i\lambda _{n} -1/2[/tex]

then my question is how would we get the energies imposing boundary conditions? (for example y(0)=Y(L)=0 wher L is a positive integer )...:smile: :smile:
 
Physics news on Phys.org
Energies? That is certainly not a Hamiltonian. In any case, since it is a first order operator, you can't satisfy two boundary conditions, only one.
 

Similar threads

  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 3 ·
Replies
3
Views
4K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 8 ·
Replies
8
Views
4K
  • · Replies 22 ·
Replies
22
Views
3K
  • · Replies 13 ·
Replies
13
Views
2K
  • · Replies 1 ·
Replies
1
Views
956