Where is the white/blue light coming from in the QuarkX reactor?

Rossi says that there are two sources of light produced by the QuarkX reactor. An internally generated light and a externally generated light.

The internally generated light source is due to the high-energy side-peak emission of exciton-polariton condensate in high density regime.

The experimental prediction that this theory expects is the production of the Mollow triplet in its spectral lines. This connect into the blue light seen in R. Mills experiments.

See the post below for more information on the Mollow triplet in spectral lines.

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A reason that appeals to me as an indication of what Rossi is saying is factual about his devices is that these observations are consistent with theory. If Rossi was inventing these observations, then they would not be stranger than fiction as they absolutely are. A fraudster would never invent such outlandish descriptions of his inventions. This also includes the things that IH personnel say about Rossi's reactors.