Personal information

Emails & domains

Verified email addresses

Verified email domains

Keywords

Condensed Matter Theory, Lattice Monte Carlo, Tensor Networks

Countries

Germany, United Kingdom

Activities

Collapse all

Employment (2)

University of Bonn: Bonn, DE

2024-04-01 to present | Junior group leader (Helmholtz-Institut für Strahlen- und Kernphysik)
Employment
Source: Self-asserted source
Johann Ostmeyer

University of Liverpool: Liverpool, GB

2021-10-01 to present | Research Associate (Mathematical Sciences)
Employment
Source: check_circle
University of Liverpool via ORCID Member Portal

Works (30)

Single-particle spectrum of doped $$\textrm{C}_{20}\textrm{H}_{12}$$-perylene

The European Physical Journal B
2025-02 | Journal article
DOI: 10.1140/epjb/s10051-024-00859-1
Contributors: Marcel Rodekamp; Evan Berkowitz; Christoph Gäntgen; Stefan Krieg; Thomas Luu; Johann Ostmeyer; Giovanni Pederiva
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

On the equivalence of Prony and Lanczos methods for Euclidean correlation functions

The European Physical Journal A
2025-02-07 | Journal article
DOI: 10.1140/epja/s10050-025-01495-8
Contributors: J. Ostmeyer; A. Sen; C. Urbach
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

First-principles quantum Monte Carlo study of charge-carrier mobility in organic molecular semiconductors

Physical Review Applied
2024-09-10 | Journal article
DOI: 10.1103/PhysRevApplied.22.L031004
Contributors: Johann Ostmeyer; Tahereh Nematiaram; Alessandro Troisi; Pavel Buividovich
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

Fermionic sign problem minimization by constant path integral contour shifts

Phys.Rev.B
2024-05-15 | Journal article | Author
DOI: 10.1103/PhysRevB.109.195158
OTHER-ID: 2676583
ARXIV: 2307.06785
Contributors: Christoph Gäntgen; Evan Berkowitz; Thomas Luu; Johann Ostmeyer; Marcel Rodekamp
Source: check_circle
INSPIRE-HEP
grade
Preferred source (of 2)‎

Effective theory for graphene nanoribbons with junctions

Phys.Rev.B
2024-05-10 | Journal article | Author
DOI: 10.1103/PhysRevB.109.195135
OTHER-ID: 2744905
ARXIV: 2401.04715
Contributors: Johann Ostmeyer; Lado Razmadze; Evan Berkowitz; Thomas Luu; Ulf-G. Meißner
Source: check_circle
INSPIRE-HEP
grade
Preferred source (of 2)‎

Testing the $\mathrm{SU}(2)$ lattice Hamiltonian built from $S_3$ partitionings

PoS
2024-05-04 | Conference paper
DOI: 10.22323/1.453.0231
OTHER-ID: 2726571
ARXIV: 2311.15926
Contributors: Garofalo, Marco; Hartung, Tobias; Jakobs, Timo; Jansen, Karl; Ostmeyer, Johann; Rolfes, Dominik; Romiti, Simone; Urbach, Carsten
Source: check_circle
INSPIRE-HEP

Simple Ways to improve Discrete Time Evolution

PoS
2023-12-27 | Conference paper
DOI: 10.22323/1.453.0025
OTHER-ID: 2694377
ARXIV: 2309.03389
Contributors: Ostmeyer, Johann
Source: check_circle
INSPIRE-HEP

Canonical momenta in digitized Su(2) lattice gauge theory: definition and free theory

Eur.Phys.J.C
2023-07-27 | Journal article
DOI: 10.1140/epjc/s10052-023-11829-9
OTHER-ID: 2649261
ARXIV: 2304.02322
Contributors: Jakobs, Timo; Garofalo, Marco; Hartung, Tobias; Jansen, Karl; Ostmeyer, Johann; Rolfes, Dominik; Romiti, Simone; Carsten Urbach
Source: check_circle
INSPIRE-HEP

Optimised Trotter decompositions for classical and quantum computing

Journal of Physics A: Mathematical and Theoretical
2023-07-14 | Journal article
DOI: 10.1088/1751-8121/acde7a
Contributors: Johann Ostmeyer
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

Digitizing SU(2) gauge fields and what to look out for when doing so

PoS
2023-01-06 | Conference paper
DOI: 10.22323/1.430.0015
OTHER-ID: 2615958
ARXIV: 2212.09496
Contributors: Jakobs, Timo; Hartung, Tobias; Jansen, Karl; Ostmeyer, Johann; Urbach, Carsten
Source: check_circle
INSPIRE-HEP

Real-time simulations of quantum spin chains: Density of states and reweighting approaches

Phys.Rev.B
2023-01-01 | Journal article
DOI: 10.1103/PhysRevB.107.024302
OTHER-ID: 2157882
ARXIV: 2209.13970
Contributors: Buividovich, Pavel; Ostmeyer, Johann
Source: check_circle
INSPIRE-HEP
grade
Preferred source (of 2)‎

Spectroscopy in the <math display="inline"><mrow><mn>2</mn><mo>+</mo><mn>1</mn><mi mathvariant="normal">D</mi></mrow></math> Thirring model with <math display="inline"><mi>N</mi><mo>=</mo><mn>1</mn></math> domain wall fermions

Phys.Rev.D
2023-01-01 | Journal article
DOI: 10.1103/PhysRevD.107.014504
OTHER-ID: 2163172
ARXIV: 2210.04790
Contributors: Hands, Simon; Ostmeyer, Johann
Source: check_circle
INSPIRE-HEP
grade
Preferred source (of 2)‎

Defining Canonical Momenta for Discretised SU$(2)$ Gauge Fields

PoS
2022-11-08 | Conference paper
DOI: 10.22323/1.430.0040
OTHER-ID: 2172053
ARXIV: 2210.15547
Contributors: Garofalo, Marco; Hartung, Tobias; Jansen, Karl; Ostmeyer, Johann; Romiti, Simone; Urbach, Carsten
Source: check_circle
INSPIRE-HEP

Stochastic and Tensor Network simulations of the Hubbard Model

PoS
2022-11-07 | Conference paper
DOI: 10.22323/1.430.0230
OTHER-ID: 2165147
ARXIV: 2210.06874
Contributors: Ostmeyer, Johann
Source: check_circle
INSPIRE-HEP

Mitigating the Hubbard sign problem with complex-valued neural networks

Physical Review B
2022-09-22 | Journal article
DOI: 10.1103/PhysRevB.106.125139
Contributors: Marcel Rodekamp; Evan Berkowitz; Christoph Gäntgen; Stefan Krieg; Thomas Luu; Johann Ostmeyer
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

The Hubbard model with fermionic tensor networks

PoS
2022-05-16 | Conference paper
DOI: 10.22323/1.396.0377
OTHER-ID: 1955213
ARXIV: 2110.15340
Contributors: Schneider, Manuel; Ostmeyer, Johann; Jansen, Karl; Luu, Thomas; Urbach, Carsten
Source: check_circle
INSPIRE-HEP

The Semimetal-Antiferromagnetic Mott Insulator Quantum Phase Transition of the Hubbard Model on the Honeycomb Lattice

PoS
2022-05-16 | Conference paper
DOI: 10.22323/1.396.0303
OTHER-ID: 1956051
ARXIV: 2110.15441
Contributors: Ostmeyer, Johann; Berkowitz, Evan; Krieg, Stefan; Lähde, Timo A.; Luu, Thomas; Urbach, Carsten
Source: check_circle
INSPIRE-HEP

Digitising SU(2) gauge fields and the freezing transition

The European Physical Journal C
2022-03 | Journal article
DOI: 10.1140/epjc/s10052-022-10192-5
Contributors: Tobias Hartung; Timo Jakobs; Karl Jansen; Johann Ostmeyer; Carsten Urbach
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

The Hubbard Model on the Honeycomb Lattice with Hybrid Monte Carlo

2021 | Dissertation or Thesis
OTHER-ID: 1956054
ARXIV: 2110.15432
Contributors: Ostmeyer, Johann
Source: check_circle
INSPIRE-HEP

Antiferromagnetic character of the quantum phase transition in the Hubbard model on the honeycomb lattice

Physical Review B
2021-10-25 | Journal article
DOI: 10.1103/PhysRevB.104.155142
Contributors: Johann Ostmeyer; Evan Berkowitz; Stefan Krieg; Timo A. Lähde; Thomas Luu; Carsten Urbach
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

Simulating both parity sectors of the Hubbard model with tensor networks

Physical Review B
2021-10-11 | Journal article
DOI: 10.1103/PhysRevB.104.155118
Contributors: Manuel Schneider; Johann Ostmeyer; Karl Jansen; Thomas Luu; Carsten Urbach
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

The Ising model with Hybrid Monte Carlo

Computer Physics Communications
2021-08 | Journal article
DOI: 10.1016/j.cpc.2021.107978
Contributors: Johann Ostmeyer; Evan Berkowitz; Thomas Luu; Marcus Petschlies; Ferenc Pittler
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

Beer mats make bad frisbees

The European Physical Journal Plus
2021-07 | Journal article
DOI: 10.1140/epjp/s13360-021-01732-1
Contributors: Johann Ostmeyer; Christoph Schürmann; Carsten Urbach
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

Machine learning to alleviate Hubbard-model sign problems

Physical Review B
2021-03-25 | Journal article
DOI: 10.1103/PhysRevB.103.125153
Contributors: Jan-Lukas Wynen; Evan Berkowitz; Stefan Krieg; Thomas Luu; Johann Ostmeyer
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

hadron: Analysis Framework for Monte Carlo Simulation Data in Physics
Source: Self-asserted source
Johann Ostmeyer

Physics of Beer Tapping -- Lower vs. Upper Bottle

2020 | Other
Source: Self-asserted source
Johann Ostmeyer

qsimulatR: A Quantum Computer Simulator

2020 | Manual
URI:

https://CRAN.R-project.org/package=qsimulatR
Source: Self-asserted source
Johann Ostmeyer

Semimetal–Mott insulator quantum phase transition of the Hubbard model on the honeycomb lattice

Physical Review B
2020-12-04 | Journal article
DOI: 10.1103/PhysRevB.102.245105
Contributors: Johann Ostmeyer; Evan Berkowitz; Stefan Krieg; Timo A. Lähde; Thomas Luu; Carsten Urbach
Source: check_circle
Crossref
grade
Preferred source (of 3)‎

On the generalised eigenvalue method and its relation to Prony and generalised pencil of function methods

Eur.Phys.J.A
2020-08-17 | Journal article
DOI: 10.1140/epja/s10050-020-00205-w
OTHER-ID: 1792113
ARXIV: 2004.10472
Contributors: Fischer, Matthias; Kostrzewa, Bartosz; Ostmeyer, Johann; Ottnad, Konstantin; Ueding, Martin; Urbach, Carsten
Source: check_circle
INSPIRE-HEP
grade
Preferred source (of 2)‎

Accelerating Hybrid Monte Carlo simulations of the Hubbard model on the hexagonal lattice

Comput.Phys.Commun.
2019-03 | Journal article
DOI: 10.1016/j.cpc.2018.10.008
OTHER-ID: 1713761
ARXIV: 1804.07195
Contributors: Stefan Krieg; Thomas Luu; Ostmeyer, Johann; Papaphilippou, Philippos; Carsten Urbach
Source: check_circle
INSPIRE-HEP
grade
Preferred source (of 2)‎
How many people are using ORCID?