Xabier Oianguren-Asua
Email : xabier.oianguren-asua@math.uni-tuebingen.de
(Feel free to address me in: English, Basque, Spanish, Catalan or German)
Universität Tübingen
Fachbereich Mathematik
AB Mathematische Physik
Auf der Morgenstelle 10
72076 Tübingen
Raum: C5 A02
Tel: +49 (0)7071 29 74319
Background
After completing a B.Sc. in Computational Mathematics and a B.Sc. in Nanoscience at the Autonomous University of Barcelona, I pursued a M.Sc. in Mathematical Physics in Tübingen. Under the La Caixa Foundation's postgraduate scholarship, I am now working on a Ph.D. in Mathematics under the supervision of Prof. Dr. Roderich Tumulka and Prof. Dr. Stefan Teufel.
The Ph.D. project consists in developing and proving the usefulness of rigorous "pilot-wave theories" with a field ontology. In particular, we are developing the mathematical tools for a QFT in a "Schrödinger picture" —i.e., a QFT that explicitly employs wavefunctions over field configuration-spaces as its state-vectors.
Teaching
Winter Term 2025/26
Talks
- Rigorous Schrödinger Quantum Mechanics of Countably Many Degrees of Freedom. Will be given on 9 January 2026 at the Workshop on The Ontology of Fields (Ludwig Maximilians University Munich), organized by Mario Hubert.
- What could one mean by "L2(R^\infty,d^\infty x)" as a wavefunction space? [slides]. Given on 11 December 2025 at the Mathematical Physics Oberseminar (Eberhard Karls Universität Tübingen).
- Towards a Rigorous Interacting Fermion QFT: The "Dirac-Hilbert Ocean" [slides]. Given on 8 July 2025 at the Mathematical Physics Colloquium (Eberhard Karls Universität Tübingen).
- The Field Ontology in QFT [handout]. Given on 29 October 2024 at the seminar Advanced Topics in Quantum Mechanics (Eberhard Karls Universität Tübingen) of Roderich Tumulka.
- The Fermionic Position Operators and the Dirac Sea [slides]. Given on 16 July 2024 at the seminar Foundations of Quantum Mechanics (Eberhard Karls Universität Tübingen) of Roderich Tumulka.
- Weak values: a new paradigm to characterize nanoscale systems [slides]. Given on 13 June 2023 at the 22nd International Workshop on Computational Nanotechnology (IWCN), celebrated in Barcelona.
Theses
X. Oianguren-Asua (Supervisor: Roderich Tumulka)
Schrödinger Quantum Mechanics of Countably Many Degrees of Freedom. [pdf]
Master's Thesis written for M.Sc. in Mathematical Physics (Eberhard Karls Universität Tübingen).
X. Oianguren-Asua (Supervisor: Alex Turpin)
A Conical Refraction Polarimeter. [pdf]
Bachelor's Thesis written for B.Sc. in Computational Mathematics (Universitat Autònoma de Barcelona).
Publications
J.J. Seoane, X. Oianguren-Asua, A. Solé, and X. Oriols,
Comment on “Association between quantum paradoxes based on weak values and a realistic interpretation of quantum measurements”.
Physical Review A 111, no. 6 (2025): 066201.
[ doi.org/10.1103/PhysRevA.111.066201 ]
X. Oianguren-Asua, A. Solé, C. F. Destefani and X. Oriols,
How weak values illuminate the role of hidden-variables as predictive tools'.
Chapter in the book:
A. Oldofredi (eds), Guiding Waves in Quantum Mechanics (Oxford University Press, 2025)
[ doi.org/10.1093/oso/9780198901853.003.0016 | arXiv:2310.03852 ]
X. Oianguren-Asua, C. F. Destefani, M. Villani, D. K. Ferry and X. Oriols,
Bohmian Mechanics as a Practical Tool.
Chapter in the book:
A. Bassi, S. Goldstein, R. Tumulka, N. Zanghi (eds) Physics and the Nature of Reality: Essays in Memory of Detlef Durr (Springer 2024)