Mixed State Eigenfuntion Equations

In summary, the Hamiltonian energy operator is represented by H, with a1 and a2 as normalization constants and u1 and u2 as wave functions. The eigenvalues E1 and E2 can be calculated from the equation H(a1u1 + a2u2) = a1E1 u1 + a2 E2u2 by splitting it into two equations and solving the eigenvalue problem for E1 and E2. The normalization constants will remain the same when the equation is split.
  • #1
kd001
43
0
H(a1u1 + a2u2) = a1E1 u1 + a2 E2u2

H is the Hamiltonian energy operator, a1 and a2 are normalisation constants, u1 and u2 are wave functions, E1 and E2 are the eigenvalues. Is it possible to calculate the values of E1 and E2 from the above equation if everything else is given? It should be possible to calculate the two eigenvalues given the two eigenfunctions shouldn't it? But there are two unknowns and just one equation. I'm not asking for a solution, whether it is possible to do it or not and if yes some hints as how to go about it.

Thanks.
 
Physics news on Phys.org
  • #2
yes it does look possible perhaps splitting it into 2 equations would help:
H(a1u1)=E1(a1u1)
h(a2u2)=E2(a2u2)
and then solve the eigenvalue problem for E1 and E2
 
  • #3
VanOosten said:
yes it does look possible perhaps splitting it into 2 equations would help:
H(a1u1)=E1(a1u1)
h(a2u2)=E2(a2u2)
and then solve the eigenvalue problem for E1 and E2

Thanks. But Would 'h' be the same as 'H'? Also I believe the normalisation constants wouldn't be the same when the equation is split.
 
  • #4
yes i did mean H, that was a typo
and the normalization constants will still be the same because the wave function itself is not being changed you are just looking at the u1 terms first then the u2 terms second
 

Related to Mixed State Eigenfuntion Equations

1. What is a mixed state eigenfunction equation?

A mixed state eigenfunction equation is a mathematical expression that describes the behavior of a quantum system in a mixed state, which is a combination of multiple pure states. It is used in quantum mechanics to calculate the probabilities of different outcomes when measuring the system.

2. How is a mixed state eigenfunction equation different from a regular eigenfunction equation?

A regular eigenfunction equation describes the behavior of a quantum system in a pure state, while a mixed state eigenfunction equation takes into account the probabilities of being in different pure states. This allows for a more accurate representation of the system's behavior in a mixed state.

3. What is the significance of mixed state eigenfunction equations in quantum mechanics?

Mixed state eigenfunction equations are essential in understanding the behavior of quantum systems in real-world scenarios, where they are often in mixed states. They also help in predicting the probabilities of different outcomes in measurements, which is crucial in quantum computing and other applications.

4. How are mixed state eigenfunction equations solved?

Mixed state eigenfunction equations are solved using mathematical techniques such as linear algebra and differential equations. The exact method depends on the specific equation and the properties of the system being studied.

5. Can mixed state eigenfunction equations be applied to classical systems?

No, mixed state eigenfunction equations are specific to quantum systems and cannot be applied to classical systems. This is because classical systems do not exhibit the same probabilistic behavior as quantum systems, and therefore, do not require the use of mixed state eigenfunction equations.

Similar threads

Replies
18
Views
2K
  • Quantum Physics
Replies
24
Views
1K
  • Quantum Physics
Replies
2
Views
1K
  • Quantum Physics
Replies
1
Views
748
  • Advanced Physics Homework Help
Replies
14
Views
1K
Replies
7
Views
782
  • Advanced Physics Homework Help
Replies
9
Views
1K
Replies
2
Views
2K
  • Advanced Physics Homework Help
Replies
4
Views
2K
  • Introductory Physics Homework Help
Replies
1
Views
1K
Back
Top