- #1
emind
- 1
- 0
The master equation of the damped harmonic oscillator is
[itex]
\frac{d}{dt}\rho_S(t)
=
-i\omega_0
[a^\dagger a,\rho_S(t)]
+
\gamma_0(\bar n+1)
\{
a\rho_S(t) a^\dagger
-\frac{1}{2}
a^\dagger a \rho_S(t)
-\frac{1}{2}
\rho_S(t) a^\dagger a
\}
+
\gamma_0\bar n
\{
a^\dagger
\rho_S(t)
a
-\frac{1}{2}
a a^\dagger \rho_S(t)
-\frac{1}{2}
\rho_S(t)
a
a^\dagger
\}
\equiv
\mathcal{L}\rho_S(t).
[/itex]
Is there any method to analytically find out some eigenvalues, like the smallest three eigenvalues, of the liouvillian?
I am an engineering graduate, but now a rookie in physics.
Thanks for any advices.
[itex]
\frac{d}{dt}\rho_S(t)
=
-i\omega_0
[a^\dagger a,\rho_S(t)]
+
\gamma_0(\bar n+1)
\{
a\rho_S(t) a^\dagger
-\frac{1}{2}
a^\dagger a \rho_S(t)
-\frac{1}{2}
\rho_S(t) a^\dagger a
\}
+
\gamma_0\bar n
\{
a^\dagger
\rho_S(t)
a
-\frac{1}{2}
a a^\dagger \rho_S(t)
-\frac{1}{2}
\rho_S(t)
a
a^\dagger
\}
\equiv
\mathcal{L}\rho_S(t).
[/itex]
Is there any method to analytically find out some eigenvalues, like the smallest three eigenvalues, of the liouvillian?
I am an engineering graduate, but now a rookie in physics.
Thanks for any advices.