Question

What is the root-mean-square fluctuation in the number of photons of mode frequency $\omega$ in a conducting rectangular cavity? Is it always smaller than the average number of photons in the mode?

   What is the root-mean-square fluctuation in the number of photons of mode frequency $\omega$ in a conducting rectangular cavity? Is it always smaller than the average number of photons in the mode?

Problems and Solutions on Thermodynamics and Statistical Mechanics

Problems and Solutions on Thermodynamics and Statistical Mechanics

U.S.T. of China… 1st Edition

Chapter 2, Problem 139

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We are dealing with a conducting rectangular cavity that can support electromagnetic modes, each characterized by a specific frequency $\omega$. The number of photons in a given mode can fluctuate due to quantum effects. Show more…

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What is the root-mean-square fluctuation in the number of photons of mode frequency $\omega$ in a conducting rectangular cavity? Is it always smaller than the average number of photons in the mode?

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