I have posted a similar question last year pertaining to this issue. Here's a link to my post together with the solution given: Unable to evaluate Eigenvalues and Eigenvectors for a matrix
I have tried the methods in my previous posts but to no avail. Here's the problem: I have the following 3x3 matrix
m = {{-γ/2, -I*g1, -I*Exp[-I*α]*g3}, {-I*g1, -(κ1)/2, -I*g2}, {-I*Exp[I*α]*g3, -I*g2, -(κ2)/2]}}
where I
represents the complex identity \Sqrt[-1]
. I wish to find the eigenvectors for the matrix for two different alpha values. For α = π/2
, simply doing (after manually replacing α
with π/2
)
Eigenvectors[m, Cubics->True]
Returns the appropriate (albeit long) eigenvectors. Now however, if I change my α
to α = π
and run
Eigenvectors[m, Cubics->True]
I am returned with
...Eigenvectors: Unable to find all eigenvectors
Which is the similar issue encountered in the link that I provided above a while ago. I proceed to perform the same fix detailed in that question. Namely
Simplify[Eigenvectors[mchiral /. Complex[0, -1] -> mi, Cubics -> True] /. mi -> -I];
and I am still returned with the same error. Namely
...Eigenvectors: Unable to find all eigenvectors
What is the problem here?
m
that I fixed – but check if the form is the desired one. $\endgroup$$Version
one is using... I'm on 10.4 and there is no problem, as showed. Indeed, there is an error in 11.3. No idea what version the OP is using. Unless he clarifies there is virtually no problem. $\endgroup$