Which is real: stable states or quantum field that we define them with? If it is the states and those states are the same yesterday, today and tomorrow, then there can't arise more stable states. Everything continues as defined by states composed of the three quantum forces with relativity throw in to create mass and relative motion.
For example the basic indication of superpostioning of a weak state over the hydrogen atom is the formation of magnecules. The electromagnetic state of hydrogen atom is the natural hydrogen atom as we are familiar with it. When the weak state in superpostioned, those states must be accessed by absorption of energy which is a weak interacting state. There are 240 accessible states between hydrogen ionization and neutron decay (13.5878925 ev to 0.7824260693 MeV specific to within 2.0E-5 ev). The weak force boson in this case is a w particle but it's range is very much shorter than the radius of the natural hydrogen atom. Hence, the decay and reformation of the superpostioned weak state creates a wave across the natural hydrogen atom. Since, the electron part of this decay is the natural atom's electron, the absorption of energy by the w-boson appears as an acceleration of the neutrino. The very small mass of the neutrino means that absorption of the energy necessary to form the superpostioned weak states cause acceleration to the neutrino to velocities that cause dilation of time and contraction of space of the natural hydrogen atom. Further, the w-wave passes into nucleus (or range of the strong force), that means three superpostioned states. The result is a separation of charge across the nuclear region: a giant nuclear resonance. The separation of charge in the nucleus along with the unpaired electron orbit creates a magnetic force so strong that these state of hydrogen atoms bond magnetically. Note that the magnetic field of a natural hydrogen atom is too weak for magnetic bonding. Hence, magnecules are indication of new states suggested above.
Thermonuclear fusion, fusion forced by fields is well ingrain in our thinking but
In reality these could be accomplish with pico scale structures, matter-energy-matter reactions and a bridge between the electrochemical and the nuclear.