A universal formula for the entanglement asymmetry of matrix product states
Luca Capizzi, Vittorio Vitale
Abstract
Abstract Symmetry breaking is a fundamental concept in understanding quantum phases of matter, studied so far mostly through the lens of local order parameters. Recently, a new entanglement-based probe of symmetry breaking has been introduced under the name of entanglement asymmetry , which has been employed to investigate the mechanism of dynamical symmetry restoration. Here, we provide a universal formula for the entanglement asymmetry of matrix product states with finite bond dimension, valid in the large volume limit. We show that the entanglement asymmetry of any compact—discrete or continuous—group depends only on the symmetry breaking pattern, and is not related to any other microscopic features.
Topics & Concepts
Quantum entanglementAsymmetrySymmetry (geometry)PhysicsMatrix product stateDimension (graph theory)Quantum mechanicsSymmetry breakingQuantumProduct (mathematics)Theoretical physicsMatrix (chemical analysis)MathematicsPure mathematicsGeometryMaterials scienceComposite materialQuantum many-body systemsQuantum Information and CryptographyQuantum and electron transport phenomena