First, when negative energy is discovered to exist, that is a sure sign that energy is being extracted from the vacuum.
Next, Polaritons, in my view, are at the beating heart of the LENR reaction. They are the mechanism that generates the plasmoid that carries the LENR effect. Polaritons are formed in three ways, they come in three flavors: phonon polariton, exciton polariton and surface plasmon polariton. The phonon polariton is produced when a lattice vibration becomes entangled with an electron. A amazing discovery that is seemingly unrelated to LENR is causing many in science to do a double take, how could Science have missed this for hundreds of years: Sound has mass. https://www.scientificamerican.com/article/sound-by-the-pound-surprising-discovery-hints-sonic-waves-carry-mass/ But this mass is not ordinary mass, it is negative mass; yes, the kind of mass that come from extracting energy from the vacuum, the same kind of mass that produces anti-gravity that can float a cannon ball in a Hutchison effect experiment or a exciton polariton that underpins a solid state laser device. https://phys.org/news/2018-01-device-negative-massand-lasers.html The phonon polariton might well be at work creating the LENR reaction in every song that you hear and rustle of leaves in the wind. LENR could be happening everywhere. Dot connection as follows: Anti gravity is produced by the negative energy that comes from the vacuum. Anti gravity means negative energy which means energy produced from the vacuum which also means polaritons energy production.