DPSR = Dicke-Preparata Super-radiance
"Cooperative radiation" is the precursor to coherence, the laser and so
forth, but not confined to atomic or quantum systems.
The "impure form" of coherence phenomenon is called super-radiance. The
name is somewhat self-explanatory, and it is a bit of a surprise that
until recently, the relevance to LENR was not appreciated (even mentioned!).
QM is replete with the strange assertion that energy effects can be
"borrowed nonlocally", i.e. from another dimension, and then "repaid"
later, but this is on a very small scale. At the macro-scale, however,
you may very well get something similar, but non-quantized and hidden by
noise which makes it seem random.
Superradiant-like damping effects can even been heard in musical
instruments like the piano, or in specialized versions like the eight
octave model, in which some tones are produced by a group of two (or
three) identical strings that are struck together to give "more than the
sum" of each (at the expense of accelerated decay of the tone). When the
sound decays away too rapidly, then the tuning of the strings is too
perfect, and a small amount of detuning is introduced deliberately to
reduce superradiant damping.
Examples of macro-super-radiance, like this, are important to force
comprehension of what may difficult to imagine as commonplace. But
super-radiance though not commonplace, is not exactly rare either. Here
is another example - the "rogue wave":
http://www.damninteresting.com/?p=701
http://en.wikipedia.org/wiki/Freak_wave
There is an emerging metaphor here, which may be closer to fact than
metaphor:
LENR is the result of a "rogue wave" of interfacial phonons.
The statistical probability of ocean rogue-waves, and phonon rogue-waves
(both so seemingly rare that they may seem unpredictable) may actually
be similar (when one takes into account relative frequency and surface
area).
Jones
