Triple

Target class: topological phase of matter
Context triple: [quantum Hall effect, instanceOf, topological phase of matter]

• A. quantum phase of matter chosen
  A quantum phase of matter is a distinct state of a many-body quantum system characterized by unique patterns of quantum correlations and symmetries that remain stable under small changes in external conditions.
• B. topological phase effect
  A topological phase effect is a physical phenomenon where a system acquires a phase shift determined solely by the global, topological properties of its configuration space or path, rather than by local dynamical details.
• C. topological quantum field theory
  A topological quantum field theory is a quantum field theory whose observables and correlation functions depend only on the topology of the underlying spacetime manifold, not on its geometric details such as distances or angles.
• D. topological field
  A topological field is a field equipped with a topology such that both the field operations (addition, multiplication) and taking inverses (on nonzero elements) are continuous with respect to that topology.
• E. topological defect
  A topological defect is a stable, localized irregularity in an ordered medium or field configuration that arises because the system’s topology prevents it from being continuously transformed into a uniform state.
• F. None of above.