Izbrane teme sodobne fizike in matematike
An isolated quantum many-body system with intrinsic interaction, will thermalize, i.e. values of local observables will settle on their thermal equilibrium values. And while that is true for the vast majority of cases that might not be true for highly disordered systems. Despite that such behavior is well known in the case of finite sized systems, known as many-body localization, the question remains, does such state survive even in the thermodynamical limit, such that it becomes a new state of matter, whose most attractive property would be its ability to locally preserve information indefinitely.
Kvantni mnogodelčni sistem z intrinzično interakcijo bo termaliziral. To pomeni, da se pričakovane vrednosti lokalnih opazljivk ustalijo pri njihovi vrednosti v termičnem ravnovesju. Čeprav slednje velja za veliko večino kvantnih sistemov, to ni nujno res za sisteme z visoko stopnjo nereda. Kljub temu, da je takšno obnašanje, imenovano tudi mnogodelčna lokalizacija, poznano za sisteme s končnim številom delcev, pa vprašanje ostaja. Ali takšno stanje preživi tudi v termodinamski limiti in s tem postane novo stanje snovi, čigar najbolj zanimiva lastnost je njegova zmožnost ohranjanja lokalne informacije.