Photo: Verreson et al., Nature Physics
German scientists from the Institute of physics of complex systems max Planck and the Munich center for quantum science and technology found that the quasi-particles is able to avoid collapse, potentially making them “immortal.” This publication reports Science Alert.
The researchers calculated the complex interaction of quasiparticles with the environment in which they are distributed, and conducted a simulation of their decay. Quasi-particles represent collective excitations in solids, magnets and topological phases (phonons, magnons and anions). It was considered that they are durable systems with low energy, but inevitably fall apart in environments which are characterized by many-particle excited States.
It turned out that the “death” of quasi-particles occurs when the particles of the medium interact weakly with each other. However, if the medium is condensed, the quasi-particles become stable. For example, the magnon, which is an excitation in the system of spin “survives” in the Heisenberg antiferromagnet, where they were supposed to disintegrate. More precisely, the decay occurs, but a quasiparticle is rebuilt and after some time returned to the original state. This process can occur indefinitely.
According to scientists, the immortality of the quasiparticles gives them great potential for use in quantum computing.
Video, photo All from Russia.