1.7k citations · 5.1k across the 127 of their papers we have counts for
127 papers
Inherent altermagnetism in minimal tight-binding models of regular hyperbolic lattices
Eric Petermann, Kristian Mæland, Haye Hinrichsen +1
Altermagnets are a novel class of magnetic systems characterized by their momentum-dependent spin splitting without net magnetization. In this work, we extend established Euclidean…
Link-based causal set propagators in dimensions
Haye Hinrichsen, Arsim Kastrati
We investigate whether retarded scalar propagators on causal sets can be expressed in terms of the link matrix . For Poisson sprinklings into dimensional Minkowsk…
Numerical Evaluation of the Causal Set Propagator in 2D Anti-de Sitter Spacetime
Arsim Kastrati, Haye Hinrichsen
We numerically investigate the application of the path-sum-based causal set scalar propagator construction to (1+1)-dimensional Anti-de Sitter (AdS) spacetime. Building upon a gene…
Renormalized equations of motions for scalars and fermions in the 2PI formalism
A. Banik, H. Hinrichsen, W. Porod
We present on shell-scheme for the 2PI formalism with a particular focus on the renormalized equations of motion. We first revisit the so-called Hartree approximation where we give…
Eigenmodes of the Laplacian on Hyperbolic Lattices
Eric Petermann, Haye Hinrichsen
We examine a specific category of eigenfunctions of the lattice Laplacian on -tessellations of the Poincaré disk that bear resemblance to plane waves in the continuum case…
Breitenlohner-Freedman bound on hyperbolic tilings
Pablo Basteiro, Felix Dusel, Johanna Erdmenger +4
We establish how the Breitenlohner-Freedman (BF) bound is realized on tilings of two-dimensional Euclidean Anti-de Sitter space. For the continuum, the BF bound states that on Anti…