33 citations · 64 across the 11 of their papers we have counts for
13 papers
Quantum-Geometric Amplification of Nonperturbative Interaction Scales
Stefano Bilamour, René Meyer, Johanna Erdmenger +1
Weak interactions at a two-dimensional quadratic band touching (QBT) can generate an exponentially small symmetry-breaking gap, , that cannot be captured by every…
Analytic continuation of Green's functions with a neural network
Fakher Assaad, Johanna Erdmenger, Anika Götz +3
An important problem in many-body physics is to reconstruct the spectral density from the imaginary-time domain Green's function. Typically, the imaginary-time Green's function is…
Modular theory and symmetry resolution in hyperfinite von Neumann algebras
Giuseppe Di Giulio, Moritz Dorband, Johanna Erdmenger +1
We study modular theory in hyperfinite von Neumann algebras, i.e. in those of type II or type III, from the viewpoint of a subregion charge sector decomposition. We address this sy…
Hyperbolic tiling neighborhoods in O(1) time
Yanick Thurn, Manuel Schrauth, Johanna Erdmenger
Tilings of the hyperbolic plane are of significant interest among many branches of mathematics, physics and computer science. Yet, their construction remains a non-trivial task. Cu…
Classical spin liquids from frustrated Ising models in hyperbolic space
Fabian Köhler, Johanna Erdmenger, Roderich Moessner +1
Antiferromagnetic Ising models on frustrated lattices can realize classical spin liquids, with highly degenerate ground states and, possibly, fractionalized excitations and emergen…
Torsional Hall Viscosity of Massive Chern Insulators: Magnetic Field and Momentum Deformations
Ioannis Matthaiakakis, Weizhen Jia, Raffael L. Klees +5
This work focuses on the non-dissipative, parity-odd spin transport of -dimensional relativistic electrons, generated by torsion, and the torsional Hall viscosity $ζ_{\rm H}…
Non-Locality induces Isometry and Factorisation in Holography
Souvik Banerjee, Johanna Erdmenger, Jonathan Karl
In holography, two manifestations of the black hole information paradox are given by the non-isometric nature of the bulk-boundary map and by the factorisation puzzle. By consideri…
Krylov space approach to Singular Value Decomposition in non-Hermitian systems
Pratik Nandy, Tanay Pathak, Zhuo-Yu Xian +1
We propose a tridiagonalization approach for non-Hermitian random matrices and Hamiltonians using singular value decomposition (SVD). This technique leverages the real and non-nega…
The chiral torsional anomaly and the Nieh-Yan invariant with and without boundaries
Johanna Erdmenger, Ioannis Matthaiakakis, René Meyer +1
There exists a long-standing debate regarding the torsion contribution to the 4d chiral anomaly of a Dirac fermion. Central to this debate is the Nieh-Yan anomaly, which has been c…
Wormhole-induced effective coupling in SYK chains
Pablo Basteiro, Giuseppe Di Giulio, Johanna Erdmenger +2
Inhomogeneous quantum chains have recently been considered in the context of developing novel discrete realizations of holographic dualities. To advance this programme, we explore…
Discrete JT gravity as an Ising model
Johanna Erdmenger, Jonathan Karl, Yanick Thurn +2
Inspired by the program of discrete holography, we show that Jackiw-Teitelboim (JT) gravity on a hyperbolic tiling of Euclidean AdS gives rise to an Ising model on the dual lat…
Simulating Holographic Conformal Field Theories on Hyperbolic Lattices
Santanu Dey, Anffany Chen, Pablo Basteiro +10
We demonstrate how table-top settings combining hyperbolic lattices with nonlinear dynamics universally encode aspects of the bulk-boundary-correspondence between gravity in anti-d…
Entanglement in interacting Majorana chains and transitions of von Neumann algebras
Pablo Basteiro, Giuseppe Di Giulio, Johanna Erdmenger +1
We consider Majorana lattices with two-site interactions consisting of a general function of the fermion bilinear. The models are exactly solvable in the limit of a large number of…