DPG Phi
Verhandlungen
Verhandlungen
DPG

SMuK 2023 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MP: Fachverband Theoretische und Mathematische Grundlagen der Physik

MP 10: AdS/CFT Correspondence II

MP 10.4: Vortrag

Donnerstag, 23. März 2023, 15:00–15:20, ZEU/0250

On the Boundary Conformal Field Theory Approach to Symmetry-Resolved EntanglementGiuseppe Di Giulio1,2, René Meyer1,2, Christian Northe3,1,2, •Henri Scheppach1,2, and Suting Zhao1,21Institute for Theoretical Physics and Astrophysics, Julius Maximilian University Würzburg, Am Hubland, 97074 Würzburg, Germany — 2Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter ct.qmat — 3Department of Physics, Ben-Gurion University of the Negev, David Ben Gurion Boulevard 1, Be’er Sheva 84105, Israel

We study the symmetry resolution of the entanglement entropy of an interval in two-dimensional conformal field theories (CFTs), by studying the decomposition of the partition function into charge sectors of the respective symmetry in the presence of boundary conditions at the entangling points. Symmetry resolution provides a more refined entanglement measure and can therefore provide more information about the nature of quantum states in QFT. We demonstrate that the decomposition already provides the symmetry resolution of the entanglement spectrum of the corresponding bipartition. Considering the various terms of the partition function associated with the same charge sector the symmetry-resolved Rényi entropies can be derived to all orders in the UV cutoff expansion without the need to compute the charged moments. We apply this idea to the theory of a free massless boson with U(1), R and Z2 symmetry. We find equipartition in the U(1) and R cases to all orders in the cutoff expansion.

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2023 > SMuK