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Henrik Christiansen

henrik.christiansen@neclab.eu, henrik.christiansen@itp.uni-leipzig.de
Google scholar, Researchgate


BIOGRAPHY

I am currently a Research Scientist at NEC Laboratories Europe in Heidelberg
(personal webpage). There, I am located in the Intelligent Software Systems
(ISS) group, working at the intersect of scientific computing, system platform,
and machine learning.

Before joining NEC in 2022, I did my PhD in computational/statistical physics at
the University of Leipzig (personal webpage), where I worked on simple but
complex physical model systems. One focus was to come up with new methods to
observe new physics.




PUBLICATIONS

 1.  H. Christiansen, S. Majumder, and W. Janke,
     Coarsening and Aging of Lattice Polymers: Influence of Bond Fluctuations,
     J. Chem. Phys. 147, 094902 (2017) [online] [arXiv:1708.03216].
     
     

 2.  H. Christiansen, S. Majumder, and W. Janke,
     Phase Ordering Kinetics of the Long-Range Ising Model,
     Phys. Rev. E 99, 011301(R) (2019) [online] [arXiv:1808.10426].
     
     

 3.  H. Christiansen, M. Weigel, and W. Janke,
     Accelerating Molecular Dynamics Simulations with Population Annealing,
     Phys. Rev. Lett. 122, 060602 (2019) [online] [arXiv:1806.06016].
     
     

 4.  H. Christiansen, S. Majumder, M. Henkel, and W. Janke,
     Aging in the Long-Range Ising Model,
     Phys. Rev. Lett. 125, 180601 (2020) [online] [Supplemental Material online]
     [arXiv:1906.11815].
     
     

 5.  S. Majumder, H. Christiansen, and W. Janke,
     Understanding Nonequilibrium Scaling Laws Governing Collapse of a Polymer,
     Eur. Phys. J. B 93, 142 (2020) [online] [arXiv:1910.03394].
     
     

 6.  H. Christiansen, S. Majumder, and W. Janke,
     Zero-Temperature Coarsening in the 2D Long-Range Ising Model,
     Phys. Rev. E 103, 052122 (2021) [online] [arXiv:2011.06098].
     
     

 7.  F. Müller, H. Christiansen, and W. Janke,
     Phase-Separation Kinetics in the Two-Dimensional Long-Range Ising Model,
     Phys. Rev. Lett. 129, 240601 (2022) [online].
     
     

 8.  F. Müller, H. Christiansen, S. Schnabel, and W. Janke,
     Fast, Hierarchical, and Adaptive Algorithm for Metropolis Monte Carlo
     Simulations of Long-Range Interacting Systems,
     Phys. Rev. X 13, 031006 (2023) [online] [arXiv:2207.14670]
     
     

 9.  D. Gessert, H. Christiansen, and W. Janke,
     Superdiffusion-Like Behavior in Zero-Temperature Coarsening of the d=3
     Ising Model,
     Sci. Rep. 13, 13270 (2023) [online] [arXiv:2305.12161].
     
     

 10. W. Janke, H. Christiansen, and S. Majumder,
     The Role of Magnetization in Phase-Ordering Kinetics of the Two-Dimensional
     Short-Range and Long-Range Ising Model,
     Eur. Phys. J. Spec. Top. 232, 1693 (2023) [online].
     
     

 11. H. Christiansen, F. Errica, F. Alesiani,
     Self-Tuning Hamiltonian Monte Carlo for Accelerated Sampling,
     J. Chem. Phys. 159, 234109 (2023) [online] [arXiv:2309.13593].
     
     

 12. V. Zaverkin, D. Holzmüller, H. Christiansen, F. Errica, F. Alesiani, M.
     Takamoto, M. Niepert, J. Kästner,
     Uncertainty-biased molecular dynamics for learning uniformly accurate
     interatomic potentials,
     npj Comput. Mater. 10, 83 (2024) [online] [arXiv:2312.01416] [Research
     Square].
     
     

 13. F. Errica, H. Christiansen, V. Zaverkin, T. Maruyama, M. Niepert, F.
     Alesiani,
     Adaptive Message Passing: A General Framework to Mitigate Oversmoothing,
     Oversquashing, and Underreaching,
     under review at J. Mach. Learn. Res. (JMLR) (2024) [arXiv:2312.16560].
     
     

 14. D. Gessert, H. Christiansen, W. Janke,
     Aging following a zero-temperature quench in the d=3 Ising model,
     Phys. Rev. E 109, 044148 (2024) [online] [arXiv:2404.04214].
     
     

 15. S. Majumder, H. Christiansen, W. Janke,
     Temperature and Solvent Viscosity Tune the Intermediates During the
     Collapse of a Polymer,
     preprint (2024) [arXiv:2405.04813].
     
     

 16. D. Warkotsch, H. Christiansen, J. Zierenberg, W. Janke,
     Pulling on grafted flexible polymers can cause twisted bundles,
     accepted for publication in Soft Matter (2024).
     
     

 17. V. Zaverkin, F. Alesiani, T. Maruyama, F. Errica, H. Christiansen, M.
     Takamoto, N. Weber, M. Niepert,
     Higher-Rank Irreducible Cartesian Tensors for Equivariant Message Passing,
     preprint (2024) [arXiv:2405.14253].
     
     


CONFERENCE PROCEEDINGS

 1. S. Majumder, H. Christiansen, and W. Janke,
    Scaling Laws During Collapse of a Homopolymer: Lattice Versus Off-Lattice,
    J. Phys.: Conf. Ser. 955, 012008 (2018) [online] [arXiv:1712.03083].
    
    

 2. S. Majumder, H. Christiansen, and W. Janke,
    Dissipative Dynamics of a Single Polymer in Solution: A Lowe-Andersen
    Approach,
    J. Phys.: Conf. Ser. 1163, 012072 (2019) [online] [arXiv:1810.08561].
    
    

 3. W. Janke, H. Christiansen, and S. Majumder,
    Coarsening in the Long-Range Ising Model: Metropolis versus Glauber
    Criterion,
    J. Phys.: Conf. Ser. 1163, 012002 (2019) [online].
    
    

 4. H. Christiansen, M. Weigel, and W. Janke,
    Population Annealing Molecular Dynamics with Adaptive Temperature Steps,
    J. Phys.: Conf. Ser. 1163, 012074 (2019) [online].
    
    

 5. H. Christiansen, M. Weigel, and W. Janke,
    Simulating Met-Enkephalin With Population Annealing Molecular Dynamics,
    J. Phys.: Conf. Ser. 2241, 012006 (2022) [online] [arXiv:2005.00810].
    
    

 6. P. Kuterba, H. Christiansen, Z. Danel, and W. Janke,
    Molecular dynamics simulations of the monomer density profiles of knotted
    ring polymer chains confined in a slit of two parallel walls with one
    attractive and another repulsive surface,
    J. Phys.: Conf. Ser. 2436, 012031 (2023) [online].
    
    

 7. M. Conradi, H. Christiansen, S. Majumder, F. Müller, and W. Janke,
    Influence of Thermostats on the Dynamics of the Helix-Coil Transition,
    accepted for publication in Springer Proceedings in Physics (2024).