# CV

# Research Interests

Cosmology; statistical and machine learning methodology in astrophysics and cosmology; Bayesian large-scale structure inference; field-level inference; symbolic regression; dark matter; dark energy; galaxy formation; astrophysical tests of fundamental physics; modified gravity; cosmological hydrodynamical simulations.

# Employment

- Postdoctoral Fellow, CNRS & Sorbonne Université, Institut d’Astrophysique de Paris, 2022-Present
- Covid Response Officer, Oriel College, University of Oxford, 2021-2022
- Graduate Teaching and Research Scholar, Oriel College, University of Oxford, 2020-2022

# Education

- DPhil in Astrophysics, Oriel College, University of Oxford 2019-2022
- Thesis: Fundamental Physics from Galaxies
- Supervisors: Prof. Pedro Ferreira and Dr. Harry Desmond

- MA, MSci in Natural Sciences, Trinity College, University of Cambridge, 2015-2019
- Results: Class 1, 86.2%, Rank 3/92
- Thesis: The conformal boundary at the end of the universe
- Supervisor: Dr. Will Handley

# Awards and Scholarships

- Graduate Teaching and Research Scholar, Oriel College, Oxford 2020–2022
- Senior Scholar, Trinity College, Cambridge 2016–19
- Bronze Medal, 46th International Physics Olympiad, Mumbai 2015
- Exceptional mathematical performance, British Physics Olympiad 2015

# Publications

D.J. Bartlett, H. Desmond, J. Devriendt, P.G. Ferreira and A. Slyz. "Spatially offset black holes in the Horizon-AGN simulation and comparison to observations." *MNRAS, 500(4):4639–4657*.

D.J. Bartlett, H. Desmond and P.G. Ferreira (2021). "Constraints on Galileons from the positions of supermassive black holes" *Phys. Rev. D, 103(2):023523*.

D.J. Bartlett, H. Desmond and P.G. Ferreira (2021). "Calibrating galaxy formation effects in galactic tests of fundamental physics." *Phys. Rev. D, 103(12):123502*.

D.J. Bartlett, D. Bergsdal, H. Desmond, P.G. Ferreira and J. Jasche (2021). "Constraints on equivalence principle violation from gamma ray bursts." *Phys. Rev. D, 104(8):084025*.

D.J. Bartlett, H. Desmond, P.G. Ferreira and J. Jasche (2021). "Constraints on quantum gravity and the photon mass from gamma ray bursts." *Phys. Rev. D, 104(10):10351*.

A.N. Lasenby, W.J. Handley, D.J. Bartlett, and C.S. Negreanu (2022). "Perturbations and the future conformal boundary." *Phys. Rev. D, 105(8):083514*.

D.J. Bartlett, W.J. Handley and A.N. Lasenby (2022). "Improved cosmological fits with quantized primordial power spectra." *Phys. Rev. D, 105(8):083515*.

R. Stiskalek, D.J. Bartlett, H. Desmond, and D. Anbajagane (2022). "The scatter in the galaxy–halo connection: a machine learning analysis." *MNRAS, 514(3):4026–4045*.

D.J. Bartlett, A. Kostic, H. Desmond, J. Jasche and G. Lavaux (2022). "Constraints on dark matter annihilation and decay from the large-scale structure of the nearby Universe." *Phys. Rev. D, 106(10)110352*.

H. Desmond, D.J. Bartlett and P.G. Ferreira (2023). "On the functional form of the radial acceleration relation." *MNRAS 521(2):1817-1831*.

A. Kostic, D.J. Bartlett and H. Desmond (2023). "No evidence for p- or d-wave dark matter annihilation from local large-scale structure." *arXiv:2304.10301*.

D.J. Bartlett, H. Desmond and P.G. Ferreira (2023). "Exhaustive Symbolic Regression." *In IEEE Transactions on Evolutionary Computation 28, 950*.

V. Vardanyan and D. J. Bartlett (2023). "Modeling and testing screening mechanisms in the laboratory and in space." *Universe 2023, 9, 340*.

D.J. Bartlett, H. Desmond and P.G. Ferreira (2023). "Priors for symbolic regression." *In Proceedings of the Companion Conference on Genetic and Evolutionary Computation, Association for Computing Machinery, New York, NY, USA, 2402–2411*.

A. Paopiamsap, D. Alonso, D.J. Bartlett and M. Bilicki (2023). "Constraints on dark matter and astrophysics from tomographic $\gamma$-ray cross-correlations." *Phys. Rev. D 109, 103517*.

Tomas Sousa, D.J. Bartlett, H. Desmond and P.G. Ferreira (2024). "Optimal inflationary potentials." *Phys. Rev. D 109, 083524*.

D.J. Bartlett and H. Desmond (2023). "Marginalised Normal Regression: Unbiased curve fitting in the presence of x-errors." *The Open Journal of Astrophysics, 6, 11 2023.*.

M. Ho, D.J. Bartlett et al. (2024). "ltu-ili: An All-in-One Framework for Implicit Inference in Astrophysics and Cosmology." *The Open Journal of Astrophysics, 7, 7 2024*.

G. Kronberger, Fabricio Olivetti de Franca, H. Desmond, D. J. Bartlett, and L. Kammerer (2024). "The Inefficiency of Genetic Programming for Symbolic Regression." *arXiv:2404.17292*.

D.J. Bartlett, M. Ho and B.D. Wandelt (2024). "Bye bye, local bias: the statistics of the halo field are not determined by the local mass density." *arXiv:2405.00635*.

D.J. Bartlett, B.D. Wandelt, M. Zennaro, P.G. Ferreira and H. Desmond (2024). "syren-halofit: A fast, interpretable, high-precision formula for the $\Lambda$CDM nonlinear matter power spectrum." *A&A 686:A150*.

D.J. Bartlett, L. Kammerer, G. Kronberger, H. Desmond, P.G. Ferreira, B.D. Wandelt, B. Burlacu, D. Alonso and M. Zennaro (2023). "A precise symbolic emulator of the linear matter power spectrum." *A&A 686:A209*.

A. Constantin, D.J. Bartlett, H. Desmond and P.G. Ferreira (2024). "Statistical Patterns in the Equations of Physics and the Emergence of a Meta-Law of Nature." *arXiv:2408.11065*.

W.J. Wolf, C. García-García, D.J. Bartlett and P.G. Ferreira (2024). "Scant evidence for thawing quintessence." *arXiv:2408.17318*.

D.J. Bartlett, M. Chiarenza, L. Doeser and F. Leclercq (2024). "COmoving Computer Acceleration (COCA): N-body simulations in an emulated frame of reference." *arXiv:2409.02154*.

# Talks

May 17, 2023

Talk at Webinaires de l'Action Dark Energy,

# Teaching

**Graduate Teaching and Research Scholar** - Oriel College, University of Oxford (2020-2022)

- Courses tutored:
- A3 Quantum Physics (2nd year Physics).
- B4 Nuclear and Particle Physics (3rd year Physics).

- Ran tutorials, marked problem sheets, set and marked mock examinations.
- Jointly ran mathematical interview for selection of undergraduate students in Physics and Physics and Philosophy. Wrote and delivered questions for these interviews and assessed candidates’ performance.

**British Team Coach** - British Physics Olympiad (2017-present)

- Led sessions on a variety of topics. Planning content, writing questions and creating resources.
- No student has failed to achieve a medal during the years I have been involved with the team.

# Service

Collaborations