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The result of angular frequency deduced from Eq 1.8 is quite confusing to me. Can some one walk me through it please?
Thank you
No, I don’t think soIt seems to me the author used the relation ##\omega^2 = \frac k m## for the frequency of an harmonic oscillator, where in this case ##k = \phi_p## and ##m = \frac 1 {\rho p^2}##.
cuz in his notation (eq1.8) he has rho bar he forgot the divsion symbol. this is a book called qft in stat phys by A. Abrikosov btw. previously he mentioned in low temp He4 energy is proportional to momentumWhy not ? It looks like the total energy of an HO... BTW I'm sorry but that's the only thing I could think of
thank youSorry, I'm not following. If you compare that equation with ##\frac 1 2 m \dot x ^2 + \frac 1 2 k x^2## it is straightforward to obtain ##\omega ^2 = \frac k m##