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nyvane
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Homework Statement
Consider the anharmonic potential U(x)=cx2-gx3-fx4 and show that the approximate heat capacity of the classical unharmonic oscillator in one dimension is
C=kb[1+(3f/2c2+15g2/8c3)kbT]
Homework Equations
U(x)=cx2-gx3-fx4
and heat capacity is C=dU/dT
The Attempt at a Solution
I have used boltzman distrşbution of x as 3g/4c2*kbT and took derivative of U according to T but I could not find the given heat capacity.