2000 M.Sc.– Budapest University of Technology and Economics 2004 Ph.D.– Budapest University of Technology and Economics
Currently I am interested in developing algorithms and applying inference techniques to industrial problems. Despite this shift towards more applied sciences, I still maintain a branch of research in theoretical physics, e.g. developing Path Integral Monte Carlo methods for various phase transitions.
Currently active research areas:
Models of crystal oscillators: our everyday electronic devices (e.g. mobile, laptops, tablets, GPS, etc) have to keep track of time, measure geographic location or distance travelled. In order to achieve any of these tasks precise clocks are needed. Crystal oscillators provide a solution for achieving this aim. However, there are factors which limit the precision of such oscillators. My aim is to understanding the physics of oscillators, and develop algorithms which may help in actively eliminating some of these limiting factors.
Inference algorithms for continuous measurements: As computational power rapidly increasing, variety of the practically useful statistical algorithms can be directly adapted and utilised for industrial problems. In our group we attempt to implement such algorithms in already existing commercial devices, thereby improving their performance without the need of possibly costly re-design of the hardware.
Precision agriculture and decision support systems: New Zealand's economy hugely rely on the performance of its agriculture sector, therefore any improvement in the analysis of measurements (e.g. weight gain of an animal) or any improvement in predicting the likelihood of events based on measurements may have substantial outcome not only for the individual farmers, but eventually for the country as well. In the electronics group, we engage in developing not only the devices for precise measurements, but also algorithms which do not necessarily demand large-scale post-processing.
Najafabadi, M. S., Schumayer, D., Lee, C.-K., Jaksch, D., & Hutchinson, D. A. W. (2023). Improving quantum annealing by engineering the coupling to the environment. EPJ Quantum Technology, 10, 44. doi: 10.1140/epjqt/s40507-023-00202-0
Journal - Research Article
Lohof, F., Schumayer, D., Hutchinson, D. A. W., & Gies, C. (2023). Signatures of superradiance as a witness to multipartite entanglement. Physical Review Letters, 131(6), 063601. doi: 10.1103/PhysRevLett.131.063601
Journal - Research Article
Rahimi, N. F. B., Schumayer, D., & Hutchinson, D. A. W. (2023). Feynman's vortices in Bose-Einstein condensates. Proceedings of the Te Whai Ao: Dodd-Walls Centre (DWC) Rotorua Symposium. (pp. 38). Retrieved from https://www.otago.ac.nz/dodd-walls
Conference Contribution - Published proceedings: Abstract
Rahimi, N. F. B., Schumayer, D., & Hutchinson, D. (2023). Feynman's vortices in ultracold atomtronic system. Proceedings of the Te Whai Ao: Dodd-Walls Centre (DWC) Rotorua Symposium. (pp. 37). Retrieved from https://www.otago.ac.nz/dodd-walls
Conference Contribution - Published proceedings: Abstract
Olsen, H., Schumayer, D., & Hutchinson, D. (2023). Anderson localisation and synthetic gauge fields. Proceedings of the Te Whai Ao: Dodd-Walls Centre (DWC) Rotorua Symposium. (pp. 33). Retrieved from https://www.otago.ac.nz/dodd-walls
Conference Contribution - Published proceedings: Abstract
Olsen, H., Schumayer, D., & Hutchinson, D. (2022). Anderson localisation and synthetic gauge fields. Proceedings of the Dodd-Walls Centre Dunedin Symposium. Retrieved from https://www.doddwalls.ac.nz/events
Conference Contribution - Published proceedings: Abstract
Arabahmadi, E., Schumayer, D., & Hutchinson, D. A. W. (2022). Momentum space signatures of Anderson localization in the symplectic ensemble. Proceedings of the Dodd-Walls Centre Dunedin Symposium. Retrieved from https://www.doddwalls.ac.nz/events
Conference Contribution - Published proceedings: Abstract
Najafabadi, M. S., Schumayer, D., & Hutchinson, D. A. W. (2021). Effects of disorder upon transport and Anderson localization in a finite, two-dimensional Bose gas. Physical Review A, 104(6), 063311. doi: 10.1103/PhysRevA.104.063311
Journal - Research Article
Kjærgaard, N., & Schumayer, D. (2021). No cleverness: Just greatness. Journal of the Royal Society of New Zealand, 51(3-4), 409-414. doi: 10.1080/03036758.2021.1982730
Journal - Research Other
Arabahmadi, E., Schumayer, D., Edwards, M., Eller, B., & Hutchinson, D. A. W. (2021). Thermal stability of a quantum rotation sensor. Physical Review A, 104(3), 033323. doi: 10.1103/PhysRevA.104.033323
Journal - Research Article
Arabahmadi, E., Schumayer, D., & Hutchinson, D. A. W. (2021). Universal nomogram for the atomtronic quantum rotation sensor. Physical Review A, 103(4), 043319. doi: 10.1103/PhysRevA.103.043319
Journal - Research Article
Scott, T., & Schumayer, D. (2021). Network analysis of misconceptions in FCI data. AIP Conference Proceedings, 2319(1), 110001. doi: 10.1063/5.0037733
Conference Contribution - Published proceedings: Full paper
Frazer, E. K., Langhorne, P. J., Leonard, G. H., Robinson, N. J., & Schumayer, D. (2020). Observations of the size distribution of frazil ice in an Ice Shelf Water plume. Geophysical Research Letters, 47(e2020GL090498). doi: 10.1029/2020GL090498
Journal - Research Article
Grant, C., Griffin, I., McConnell, M., Quiñones‑Mateu, M., Schumayer, D., & Hutchinson, D. (2020). Re-opening after COVID-19 in New Zealand. Journal of Conservation & Museum Studies, 18(1), 4. doi: 10.5334/jcms.202
Journal - Research Article
Soundy, A. W. R., Panckhurst, B. J., Brown, P., Martin, A., Molteno, T. C. A., & Schumayer, D. (2020). Comparison of enhanced noise model performance based on analysis of civilian GPS data. Sensors, 20, 6050. doi: 10.3390/s20216050
Journal - Research Article
Martin, A., Parry, M., Soundy, A. W. R., Panckhurst, B. J., Brown, P., Molteno, T. C. A., & Schumayer, D. (2020). Improving real-time position estimation using correlated noise models. Sensors, 20, 5913. doi: 10.3390/s20205913
Journal - Research Article
White, D. H., Haase, T. A., Brown, D. J., Hoogerland, M. D., Najafabadi, M. S., Helm, J. L., … Schumayer, D., & Hutchinson, D. A. W. (2020). Observation of two-dimensional Anderson localisation of ultracold atoms. Nature Communications, 11, 4942. doi: 10.1038/s41467-020-18652-w
Journal - Research Article
Frazer, E. K., Langhorne, P. J., Leonard, G. H., Robinson, N. J., & Schumayer, D. (2020). Observations of the size distribution of frazil ice in an Ice Shelf Water plume. ESSOAr. doi: 10.1002/essoar.10504097.1
Working Paper; Discussion Paper; Technical Report
Kungl, A. F., Schumayer, D., Frazer, E. K., Langhorne, P. J., & Leonard, G. H. (2020). An oblate spheroidal model for multi-frequency acoustic back-scattering of frazil ice. Cold Regions Science & Technology, 177, 103122. doi: 10.1016/j.coldregions.2020.103122
Journal - Research Article
Najafabadi, M. S., Schumayer, D., & Hutchinson, D. A. W. (2019). Environment mediated multipartite and multidimensional entanglement. Proceedings of the 12th Annual Dodd-Walls Centre Symposium. (pp. 24). Retrieved from https://www.otago.ac.nz/dodd-walls
Conference Contribution - Published proceedings: Abstract
Scott, T. F., & Schumayer, D. (2019). Conceptual coherence in Force Concept Inventory data. Journal of Physics: Conference Series, 1286, 012063. doi: 10.1088/1742-6596/1286/1/012063
Conference Contribution - Published proceedings: Full paper
Lee, C. K., Najafabadi, M. S., Schumayer, D., Kwek, L. C., & Hutchinson, D. A. W. (2019). Environment mediated multipartite and multidimensional entanglement. Scientific Reports, 9(1), 9147. doi: 10.1038/s41598-019-45496-2
Journal - Research Article
Lee, C. K., Najafabadi, M. S., Schumayer, D., Kwek, L. C., & Hutchinson, D. A. W. (2019). Environment mediated multipartite and multidimensional entanglement. arXiv. Retrieved from https://arxiv.org/abs/1902.08320
Working Paper; Discussion Paper; Technical Report
Schumayer, D., & Hutchinson, D. A. W. (2019). Peculiarities in the gravitational field of a filamentary ring. arXiv. Retrieved from https://arxiv.org/abs/1902.03344
Working Paper; Discussion Paper; Technical Report
Scott, T. F., & Schumayer, D. (2018). Central distractors in force concept inventory data. Physical Review Physics Education Research, 14, 010106. doi: 10.1103/PhysRevPhysEducRes.14.010106
Journal - Research Article
Brown, P., Schumayer, D., Molteno, T., & Fox, C. (2017, December). A minimalist microcontroller module for a short EDA course. Verbal presentation at the Electronics New Zealand Conference (ENZCon), Christchurch, New Zealand.
Conference Contribution - Verbal presentation and other Conference outputs
Martin, A. D., Soundy, A. W. R., Panckhurst, B. J., Brown, C. P., Schumayer, D., Molteno, T. C. A., & Parry, M. (2017). Real-time uncertainty quantification using correlated noise models for GNSS positioning. Proceedings of the IEEE Sensors Conference. IEEE. doi: 10.1109/ICSENS.2017.8233899
Conference Contribution - Published proceedings: Full paper
Scott, T. F., & Schumayer, D. (2017, July). Misconceived worldviews in first year University physics students. Verbal presentation at the New Zealand Institute of Physics (NZIP) Conference, Dunedin, New Zealand.
Conference Contribution - Verbal presentation and other Conference outputs
Scott, T. F., & Schumayer, D. (2017). Conceptual coherence of non-Newtonian worldviews in Force Concept Inventory data. Physical Review Physics Education Research, 13(1), 010126. doi: 10.1103/PhysRevPhysEducRes.13.010126
Journal - Research Article
Soundy, A., Schumayer, D., & Molteno, T. (2016). GPS estimates in the presence of correlated noise. Proceedings of the Electronics New Zealand Conference (ENZCon). (pp. 136-141). University of Waikato, Hamilton, New Zealand: Electronics New Zealand. [Full Paper]
Conference Contribution - Published proceedings: Full paper
Schumayer, D., & Molteno, T. C. A. (2016). On a representation of feedback shift-registers. Proceedings of the Electronics New Zealand Conference (ENZCon). (pp. 129-135). University of Waikato, Hamilton, New Zealand: Electronics New Zealand. [Full Paper]
Conference Contribution - Published proceedings: Full paper
Kersey, L., Brown, P., Schumayer, D., & Molteno, T. (2016). Aspects of quartz operation in viscous fluid. Proceedings of the Electronics New Zealand Conference (ENZCon). (pp. 64-69). University of Waikato, Hamilton, New Zealand: Electronics New Zealand. [Full Paper]
Conference Contribution - Published proceedings: Full paper
Schumayer, D., & Scott, T. F. (2016). Misconceptions indeed. Physics Education, 51(6), 066503. doi: 10.1088/0031-9120/51/6/066503
Journal - Research Other
Bennani, V., Aarts, J. M., & Schumayer, D. (2016). Correlation of pressure and displacement during gingival displacement: An in vitro study. Journal of Prosthetic Dentistry, 115(3), 296-300. doi: 10.1016/j.prosdent.2015.08.008
Journal - Research Article
Schumayer, D., & Molteno, T. C. A. (2015). Heat conduction in multi-layer circuit elements. Proceedings of the IEEE Sensors. IEEE. doi: 10.1109/ICSENS.2015.7370190
Conference Contribution - Published proceedings: Full paper
Kungl, A., Schumayer, D., Langhorne, P., & Leonard, G. (2015). Multichannel acoustic backscattering of frazil ice: A case study in McMurdo Sound, Antarctica. Proceedings of the International Symposium on Contemporary Ice-Sheet Dynamics: Ocean interaction, meltwater and non-linear effects. 73A1930 . Retrieved from http://igs-2015.bas.ac.uk/
Conference Contribution - Published proceedings: Abstract
Bennani, V., Aarts, J. M., & Schumayer, D. (2015). Correlation of pressure and displacement during gingival retraction: An in vitro study. Journal of Dental Research, 94(Spec Iss B), 2281178. Retrieved from http://www.iadr.org/
Conference Contribution - Published proceedings: Abstract
Scott, T. F., & Schumayer, D. (2015). Students' proficiency scores within multitrait item response theory. Physical Review Special Topics: Physics Education Research, 11, 020134. doi: 10.1103/PhysRevSTPER.11.020134
Journal - Research Article
Schumayer, D., & Molteno, T. (2014). Thermal delay in composite circuit elements. Proceedings of the 21st Electronics New Zealand Conference (ENZCon). (pp. 140). University of Waikato, New Zealand: Electronics New Zealand. [Full Paper]
Conference Contribution - Published proceedings: Full paper
Soundy, A., Schumayer, D., & Molteno, T. (2014). Nonlinear Kalman filter architecture for integrated GPS and accelerometer based vehicle navigation. Proceedings of the 21st Electronics New Zealand Conference (ENZCon). (pp. 95-100). University of Waikato, New Zealand: Electronics New Zealand. [Full Paper]
Conference Contribution - Published proceedings: Full paper
Kersey, L., Schumayer, D., & Molteno, T. (2014). Physical model for a wireless piezoelectric fluid sensor. Proceedings of the 21st Electronics New Zealand Conference (ENZCon). (pp. 68-72). University of Waikato, New Zealand: Electronics New Zealand. [Full Paper]
Conference Contribution - Published proceedings: Full paper
Schumayer, D., Cormack, S., van Zyl, B. P., Farry, J., Collin, A., Zaremba, E., & Hutchinson, D. A. W. (2012). Quantum corrections to the semiclassical Hartree-Fock theory of a harmonically trapped Bose gas. European Physical Journal D, 66(8), 203. doi: 10.1140/epjd/e2012-30225-y
Journal - Research Article
Scott, T. F., Schumayer, D., & Gray, A. R. (2012). Exploratory factor analysis of a Force Concept Inventory data set. Physical Review Special Topics: Physics Education Research, 8(2), 020105. doi: 10.1103/PhysRevSTPER.8.020105
Journal - Research Article
Cormack, S. C., Schumayer, D., & Hutchinson, D. A. W. (2011, February). Emergence of a roton minimum in an interacting BEC. Poster session presented at the 5th Annual Dodd-Walls Symposium, Wellington, New Zealand.
Conference Contribution - Poster Presentation (not in published proceedings)
Schumayer, D., & Hutchinson, D. A. W. (2011, February). Physics of the Riemann hypothesis. Verbal presentation at the 5th Annual Dodd-Walls Symposium, Wellington, New Zealand.
Conference Contribution - Verbal presentation and other Conference outputs
Cormack, S. C., Schumayer, D., & Hutchinson, D. A. W. (2011). Rotons in interacting ultracold Bose gases. Physical Review Letters, 107, 140401. doi: 10.1103/PhysRevLett.107.140401
Journal - Research Article
Ujfalusi, L., Varga, I., & Schumayer, D. (2011). Quantum chaos in one dimension? Physical Review E: Statistical, Nonlinear, & Soft Matter Physics, 84, 016230. doi: 10.1103/PhysRevE.84.016230
Journal - Research Article
Schumayer, D., & Hutchinson, D. A. W. (2011). Colloquium: Physics of the Riemann hypothesis. Reviews of Modern Physics, 83(2), 307-330. doi: 10.1103/RevModPhys.83.307
Journal - Research Article
Hutchinson, D. A. W., Schumayer, D., Cormack, S. C., van Zyl, B. P., & Zaremba, E. (2010, July). Going beyond the local density approximation: The two-dimensional trapped Bose gas. Poster session presented at the 19th International Laser Physics Workshop, Foz do Iguaçu, Brazil.
Conference Contribution - Poster Presentation (not in published proceedings)
Schumayer, D., van Zyl, B. P., Bhaduri, R. K., & Hutchinson, D. A. W. (2010). Geometric scaling in the spectrum of an electron captured by a stationary finite dipole. EPL, 89(1), 13001. doi: 10.1209/0295-5075/89/13001
Journal - Research Article
Schumayer, D., van Zyl, B. P., & Hutchinson, D. A. W. (2008). Quantum mechanical potentials related to the prime numbers and Riemann zeros. Physical Review E: Statistical, Nonlinear, & Soft Matter Physics, 78(5), 056215. doi: 10.1103/PhysRevE.78.056215
Journal - Research Article
Schumayer, D., Melchert, O., Scheid, W., & Apagyi, B. (2008). Effective Rb—Rb inter-atomic potential from ultracold Bose-gas collisions. Journal of Physics B, 41(3), 035302. doi: 10.1088/0953-4075/41/3/035302
Journal - Research Article
Apagyi, B., Scheid, W., Melchert, O., & Schumayer, D. (2007). Interatomic-potential inversion from ultracold Bose-gas collision. Nuclear Physics A.790, (pp. 767c-770c). doi: 10.1016/j.nuclphysa.2007.03.023
Conference Contribution - Published proceedings: Full paper
Schumayer, D., & Hutchinson, D. A. W. (2007). Thermodynamically activated vortex-dipole formation in a two-dimensional Bose-Einstein condensate. Physical Review A, 75, 015601. doi: 10.1103/PhysRevA.75.015601
Journal - Research Article
Schumayer, D., & Hutchinson, D. A. W. (2006, December). Path integral Monte Carlo approach to phase transitions in a two-dimensional trapped Bose gas. Poster session presented at the Inaugural Symposium of the Dodd-Walls Centre for Photonics and Ultra Cold Atoms, Auckland, New Zealand.
Conference Contribution - Poster Presentation (not in published proceedings)
Schumayer, D., & Hutchinson, D. A. W. (2006, July). Path integral Monte Carlo approach to phase transitions in two-dimensional trapped Bose gas. Poster session presented at the 20th International Conference on Atomic Physics, Innsbruck, Austria.
Conference Contribution - Poster Presentation (not in published proceedings)
Apagyi, B., Melchert, O., & Schumayer, D. (2006, August). Potential inversion from collision of ultracold Bose-gas packets. Verbal presentation at the International Union of Pure and Applied Physics: 18th International Conference on Few Body Problems in Physics, Sāo Paulo, Brazil.
Conference Contribution - Verbal presentation and other Conference outputs
Apagyi, B., & Schumayer, D. (2005). Assessment of interspecies scattering lengths a12 from stability of two-component Bose-Einstein condensates. European Physical Journal B, 45(1), 55-61.
Journal - Research Article
Schumayer, D., & Hutchinson, D. A. W. (2005, December). Thermodynamically activated vortex-dipole formation in a two-dimensional Bose-Einstein condensate. Poster session presented at the Australian Conference on Optics, Lasers and Spectroscopy, Rotorua, New Zealand.
Conference Contribution - Poster Presentation (not in published proceedings)
Schumayer, D. (2004). Theoretical study of solitonic excitations in Bose-Einstein condensates (PhD). Budapest University of Technology and Economics, Budapest, Hungary. 141p.
Awarded Doctoral Degree
Apagyi, B., & Schumayer, D. (2004, July). Interspecies scattering lenghts and stability of two-component Bose-Einstein condensates. Poster session presented at the 19th International Conference on Atomic Physics, Rio de Janeiro, Brazil.
Conference Contribution - Poster Presentation (not in published proceedings)
Schumayer, D., & Apagyi, B. (2004). Stability of static solitonic excitations of two-component Bose-Einstein condensates in finite range of interspecies scattering length a12. Physical Review A, 69(4).
Journal - Research Article
Schumayer, D., & Apagyi, B. (2002). Relation between optical and atomic solitons. Physical Review A, 65(5).
Journal - Research Article
Schumayer, D., & Apagyi, B. (2002, July). On the existence of soliton excitations in multicomponent Bose-Einstein condensation. Poster session presented at the 18th International Conference on Atomic Physics, Cambridge, MA, USA.
Conference Contribution - Poster Presentation (not in published proceedings)
Schumayer, D., & Apagyi, B. (2001). Painlevè test of coupled Gross-Pitaevskii equations. Journal of Physics A: Mathematical & General, 34(23), 4969-4981.
Journal - Research Article