简介: |
We present a class of ?
?two-dimensional randomized plaquette models, where the multi-spin
? ?interaction term, known as the plaquette term, is replaced by a
? ?single-site spin term with a probability p. By varying p, we
observe ? ?a ground state phase transition at zero temperature, or
? ?equivalently, a phase transition of the symmetry operator. We
find ? ?that as p changes, the symmetry operator transitions from
being ? ?extensive to being localized in space. These models can be
? ?equivalently understood as 1+1D randomized cellular automaton ?
?dynamics, allowing the 2D transition to be interpreted as a 1+1D ?
?dynamical absorbing phase transition. Additionally, we discuss the
? ?connection between these models and the 1+1D measurement-induced
? ?entanglement phase transitions when the plaquette involves a
5-body interaction. |