Strong ergodicity breaking due to local constraints in a quantum system
Sthitadhi Roy, Achilleas Lazarides
Abstract
This paper shows that local kinetic constraints in random many-body Hamiltonians can lead to ergodicity breaking, despite the Hilbert space not fragmenting. This is purely due to the constraints, in that the unconstrained system is ergodic. The mechanism underlying the emergence of the localized phase is qualitatively different from many-body localization in locally disordered Hamiltonians.
Topics & Concepts
ErgodicityHilbert spaceStatistical physicsPhysicsPhase spaceQuantumKinetic energySpace (punctuation)Quantum systemQuantum mechanicsMathematicsPhase (matter)Parameter spaceMarkov processWork (physics)Mechanism (biology)Classical mechanicsQuantum many-body systemsQuantum Information and CryptographyQuantum chaos and dynamical systems