90 citations · 442 across the 18 of their papers we have counts for
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Entanglement in Presence of Topological Interfaces and Dualities
Christian Northe, Riccardo Poletti, Paolo Rossi
Entanglement through interfaces has attracted considerable attention in 2d conformal field theory (CFT). However, it is known that field-theoretic predictions based on the existing…
Entanglement Through Topological Defects: Reconciling Theory with Numerics
Christian Northe, Paolo Rossi
Present theoretical predictions for the entanglement entropy through topological defects are violated by numerical simulations. In order to resolve this, we introduce a paradigm sh…
Fermion Parity Resolution of Entanglement
Christian Northe
Entanglement is analyzed in the Majorana fermion conformal field theory (CFT) in the vacuum, in the fermion state, and in states built from conformal interfaces. In the boundary-st…
Spread complexity for the planar limit of holography
Rathindra N. Das, Saskia Demulder, Johanna Erdmenger +1
Complexity is a fundamental characteristic of states within a quantum system. Its use is however mostly limited to bosonic systems, inhibiting its present applicability to supersym…
Young Researchers School 2024 Maynooth: Lectures on CFT, BCFT and DCFT
Christian Northe
These notes were presented at the Young Researchers School (YRS) in Maynooth in April 2024 and provide an introduction to Conformal Field Theory CFT, Boundary Conformal Field Theor…
Entanglement spectra from holography
Stefano Baiguera, Shira Chapman, Christian Northe +2
The entanglement spectrum of a bipartite quantum system is given by the distribution of eigenvalues of the modular Hamiltonian. In this work, we compute the entanglement spectrum i…
Entanglement Resolution with Respect to Conformal Symmetry
Christian Northe
Entanglement is resolved in conformal field theory (CFT) with respect to conformal families to all orders in the UV cutoff. To leading order, symmetry-resolved entanglement is conn…
On the Boundary Conformal Field Theory Approach to Symmetry-Resolved Entanglement
Giuseppe Di Giulio, René Meyer, Christian Northe +2
We study the symmetry resolution of the entanglement entropy of an interval in two-dimensional conformal field theories (CFTs), by relating the bipartition to the geometry of an an…
Charged Moments in Higher Spin Holography
Suting Zhao, Christian Northe, Konstantin Weisenberger +1
We consider the charged moments in higher spin holography, as well as in the dual two-dimensional conformal field theory with symmetry. For the vacuum stat…
Symmetry-resolved entanglement for excited states and two entangling intervals in AdS/CFT
Konstantin Weisenberger, Suting Zhao, Christian Northe +1
We test the proposal of arXiv:2012.11274 for the holographic computation of the charged moments and the resulting symmetry-resolved entanglement entropy in different excited states…
Symmetry-Resolved Entanglement in AdS/CFT coupled to Chern-Simons Theory
Suting Zhao, Christian Northe, René Meyer
We consider symmetry-resolved entanglement entropy in AdS/CFT coupled to Chern-Simons theory. We identify the holographic dual of the charged moments in the two-…
Topological shadows and complexity of islands in multiboundary wormholes
Aranya Bhattacharya, Anindya Chanda, Sabyasachi Maulik +2
Recently, remarkable progress in recovering the Page curve of an evaporating black hole (BH) in Jackiw-Teitelboim gravity has been achieved through use of Quantum Extremal surfaces…
Holographic RG Flows for Kondo-like Impurities
Johanna Erdmenger, Charles Melby-Thompson, Christian Northe
Boundary, defect, and interface RG flows, as exemplified by the famous Kondo model, play a significant role in the theory of quantum fields. We study in detail the holographic dual…
Holographic Subregion Complexity from Kinematic Space
Raimond Abt, Johanna Erdmenger, Marius Gerbershagen +2
We consider the computation of volumes contained in a spatial slice of AdS in terms of observables in a dual CFT. Our main tool is kinematic space, defined either from the bulk…
Topological Complexity in AdS3/CFT2
Raimond Abt, Johanna Erdmenger, Haye Hinrichsen +4
We consider subregion complexity within the AdS3/CFT2 correspondence. We rewrite the volume proposal, according to which the complexity of a reduced density matrix is given by the…