Quasiparticles Forever
Quantum states of matter typically exhibit collective excitations. These involve the motion of many particles in the system, yet, remarkably, act like a single emergent entity – a quasiparticle. Known to be long lived at the lowest energies, quasiparticles are expected to become unstable when encountering the inevitable continuum of many-particle excited states at high energies, where decay is kinematically allowed. Although this is correct for weak interactions, strong interactions generically stabilize quasiparticles by pushing them out of the continuum. ~ German quantum physicist Ruben Verresen et al
Decay reigns in the ambient domain. The quantum world is something else.
The assumption was that quasiparticles in interacting quantum systems decay after a certain time. The opposite can be the case: strong interactions can even stop decay entirely. ~ German physicist Frank Polimann
Quasiparticles may decay and then reorganize themselves, becoming virtually immortal.
Quasiparticles do decay, but new, identical particle entities emerge from the debris. This process can recur endlessly. A sustained oscillation between decay and rebirth emerges. ~ Ruben Verresen
