• Corpus ID: 250698753

Measurements conspire nonlocally to restructure critical quantum states

  title={Measurements conspire nonlocally to restructure critical quantum states},
  author={Samuel J. Garratt and Zack Weinstein and Ehud Altman},
We study theoretically how local measurements perfomed on critical quantum ground states affect long-distance correlations. These states are highly entangled and feature algebraic correlations between local observables. As a consequence, local measurements can have highly nonlocal effects. Our focus is on Tomonaga-Luttinger liquid (TLL) ground states, a continuous family of critical states in one dimension whose structure is parameterized by a Luttinger parameter K . We show that arbitrarily weak… 

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