Supports· moderateORCH-E004
Superradiant collective tryptophan states predicted and quantum-yield enhancement measured
- what the source states
- The abstract states that theoretical analysis "predicts the formation of strongly superradiant states due to collective interactions among organized arrangements of up to >10^5 Trp UV-excited transition dipoles in microtubule architectures, which leads to an enhancement of the fluorescence quantum yield (QY) that is confirmed by our experiments." It further reports that these states are "remarkably resilient to disorder" and persist "at room temperature," with the brightest states having radiative lifetimes of "hundreds of femtoseconds" and the darkest "tens of seconds."
- what we infer
- Partly independent corroboration that microtubules are optically collective, from a group outside the Hameroff–Penrose line — which matters for ORCH-C013. The "tens of seconds" figure is the one that travels in secondary discussion and it is routinely misread: it is the radiative lifetime of a modeled dark collective eigenstate, a measure of how weakly a state couples to the light field, not a decoherence time. A state can be radiatively dark for seconds and dephase in femtoseconds. On the quantity Orch OR actually needs, this paper is silent.
- limitations
- Predominantly theoretical; the experimental component is a bulk fluorescence quantum-yield measurement, which is an indirect witness of collective states.
- Quantum yield can be raised by several mechanisms; the collective-state interpretation is model-dependent.
- Superradiance is cooperative light–matter coupling, a different physical process from the state reduction Orch OR requires.
- In vitro; no anesthetic manipulation and no neural preparation.