15 citations · 76 across the 12 of their papers we have counts for
12 papers
Folds of one curve: the superradiant phase diagram of Dicke modes with interacting matter
Max Hörmann
We give a thermodynamic-limit account of Dicke models with one cavity mode coupled collectively to interacting matter. Integrating out the cavity yields an exact self-consistent fu…
Comment on "Role of Matter Interactions in Superradiant Phenomena"
Max Hörmann, Anja Langheld, Jonas Leibig +2
Recently, Mendonça et al. [arXiv:2503.04961] investigated the Dicke-XXZ model and the Dicke-Ising model. For the latter model, their calculated quantum phase diagram contradicts cl…
Quantum Monte Carlo study of the bond- and site-diluted transverse-field Ising model
C. Krämer, M. Hörmann, K. P. Schmidt
We study the transverse-field Ising model on a square lattice with bond- and site-dilution at zero temperature by stochastic series expansion quantum Monte Carlo simulations. Tunin…
Quantum phase diagrams of Dicke-Ising models by a wormhole algorithm
Anja Langheld, Max Hörmann, Kai Phillip Schmidt
We gain quantitative insights on effects of light-matter interactions on correlated quantum matter by quantum Monte Carlo simulations. We introduce a wormhole algorithm for the par…
Quantum-critical properties of the one- and two-dimensional random transverse-field Ising model from large-scale quantum Monte Carlo simulations
C. Krämer, J. A. Koziol, A. Langheld +2
We study the ferromagnetic transverse-field Ising model with quenched disorder at in one and two dimensions by means of stochastic series expansion quantum Monte Carlo simu…
Hybrid quantum-classical algorithm for the transverse-field Ising model in the thermodynamic limit
Sumeet, M. Hörmann, K. P. Schmidt
We describe a hybrid quantum-classical approach to treat quantum many-body systems in the thermodynamic limit. This is done by combining numerical linked-cluster expansions (NLCE)…
Projective cluster-additive transformation for quantum lattice models
M. Hörmann, K. P. Schmidt
We construct a projection-based cluster-additive transformation that block-diagonalizes wide classes of lattice Hamiltonians . Its cluster additivity…
Dynamic structure factor of the antiferromagnetic Kitaev model in large magnetic fields
A. Schellenberger, M. Hörmann, K. P. Schmidt
We investigate the dynamic structure factor of the antiferromagnetic Kitaev honeycomb model in a magnetic field by applying perturbative continuous unitary transformations about th…
Characterization of Anisotropic Gaussian Random Fields by Minkowski Tensors
Michael Andreas Klatt, Max Hörmann, Klaus Mecke
Gaussian random fields are among the most important models of amorphous spatial structures and appear across length scales in a variety of physical, biological, and geological appl…
Kitaev honeycomb antiferromagnet in a field: quantum phase diagram for general spin
Saeed S. Jahromi, Max Hörmann, Patrick Adelhardt +4
We combine tensor-network approaches and high-order linked-cluster expansions to investigate the quantum phase diagram of the antiferromagnetic Kitaev's honeycomb model in a magnet…
Fine-Grained Tensor Network Methods
Philipp Schmoll, Saeed S. Jahromi, Max Hörmann +3
We develop a strategy for tensor network algorithms that allows to deal very efficiently with lattices of high connectivity. The basic idea is to fine-grain the physical degrees of…
Dynamic structure factor of disordered quantum spin ladders
M. Hörmann, P. Wunderlich, K. P. Schmidt
We investigate the impact of quenched disorder on the dynamical correlation functions of two-leg quantum spin ladders. Perturbative continuous unitary transformations with the help…