We establish connections between optimal transport theory and the dynamic version of the Kyle (1985) model of informed trading. We use the connections to extend the model to risk-averse market makers and multiple assets with general distributions. Risk aversion generates excess volatility, excess co-movement, short-term reversals, a variance risk premium, and a non-monotone pricing kernel. We identify the separate effects of adverse selection and inventory risk on market illiquidity. We apply the model to show that option-implied volatility predicts stock returns when there is informed trading in stocks and options and market makers are risk averse.
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The brain forms a large recurrent spiking neural network with extremely high connectivity making time-dependent mean-field approaches valuable tools to translate the microscopic level of single-neuron dynamics to the mesoscopic or macroscopic level. In recent years, experimental data as well as simulation studies have highlighted the importance of low-dimensional macroscopic dynamics in large recurrent spiking networks. On the theory side, the notion of low-rank connectivity has shifted into the focus of interest.
\r\nThis meeting will to bring together researchers in mathematical and theoretical neuroscience who address the above topics from different perspectives.
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\r\nPhase 1
\r\nPublic lectures from Monday afternoon – Wednesday end of day
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\r\nPresentations will alternate between speakers with a physics and those with a math background so as to foster links between the two communities.
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\r\nPhase 2
\r\nTutorials for PhD students on Thursday and Friday.
The last decades of electrocatalysis research have been dominated by outer-sphere theory, the study of surfaces close to electrochemical equilibrium and the rise of computationally-limited theory. The resulting pictures explain the overpotential-dependent reactant and transition states through single thermodynamic activity descriptors. They also compress multi-step reactions into a single rate-determining step on a static surface.
\r\nIn this talk, I will present my team’s work on electrochemical Arrhenius analysis that brings to light in a rather striking manner the unique aspects of inner-sphere kinetics. By performing Arrhenius analysis as function of overpotential or pressure we can test how the applied (electro)chemical potential difference modulates the kinetics¹. This includes (i) ion transport across the electric-field-dependent double layer, including the removal or acquisition of solvation shells²˒³; (ii) the coverages of reaction intermediates; and (iii) structural or chemical changes at the electrode surface or within the solvent³. All of these can induce statistically-robust compensation effects⁴ and oscillations between the Arrhenius pre-factor, log A, and apparent activation energy, Eₐ, that evade the simple kinetic pictures of the past.
\r\nOur newest results on transient CO oxidation⁵ establish Arrhenius analysis as function of CO coverage itself. By controlling for the intermediate coverage, we can address a long-standing question in electrochemistry: how does the potential of zero charge impact the kinetics of a Faradaic reaction? The results demonstrate that electric fields across the double layer are at the core of inner-sphere electrochemistry.
\r\nFinally, moving away from model systems, the oxygen reduction reaction in a fuel cell at high currents⁶ shows overpotential-dependent rate-determining terms and degrees of rate control, which are concepts that originated from thermal catalysis. Using this complicated reaction as an example, I will argue that electrochemical Arrhenius analysis can establish a kinetic framework that can unlock its full potential by integrating it with advanced catalyst design, operando spectroscopy and microscopy, and new theory. This will create a feedback loop that is no longer limited by the assumptions of the past and which will advance our education, research and, ultimately, electrochemical technology.
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\r\nReferences:
\r\n1. Oener, S. Z. et al. The Manifestation of the Electrochemical Potential Gradient in the Kinetic Landscapes of
\r\nInterfacial Electrochemistry. Angewandte Chemie International Edition n/a, e6521153.
\r\n2. Gomez Rodellar, C. et al. The role of interfacial excess charge in the reversibility of proton and hydroxide
\r\nsolvation in electrocatalysis and bipolar membranes. Proceedings of the National Academy of Sciences 123,
\r\ne2531938123 (2026).
\r\n3. Martínez-Hincapié, R. et al. Interfacial solvation pre-organizes the transition state of the oxygen evolution reaction.
\r\nNat. Chem. 1–9 (2025) doi:10.1038/s41557-025-01932-7.
\r\n4. Rodellar, C. G., Roldan Cuenya, B. & Oener, S. Z. Statistical Aspects of Electrochemical Arrhenius Analysis in the
\r\nStudy of Overpotential-Derived Compensation Effects. ACS Catal. 16, 13677–13689 (2026).
\r\n5. Aschendorf, C. J. et al. Disentanglement of interfacial electric fields and electrochemical potential gradients
\r\nreveals a multidimensional kinetic landscape. Nat. Chemistry, Accepted, (2026) doi:10.1038/s41557-026-02290-8
\r\n6. Silva Olaya, A. R. et al. Pressure and bias dependence of the rate-limiting steps of the oxygen reduction reaction.
\r\nNat Commun 16, 11170 (2025)
Thesis Director: Prof. V. Subramanian,
\r\nMaterials Science and Engineering doctoral program
\r\nThesis Nr. 11463
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\r\nTo take part in the public defense, please contact directly the speaker
Thesis Director: Prof. A. Ijspeert,
\r\nRobotics, Control and Intelligent Systems doctoral program
\r\nThesis Nr. 11646
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\r\nTo take part in the public defense, please contact directly the speaker
Thesis Director: Prof. M. Pauly,
\r\nComputer and Communication Sciences doctoral program
\r\nThesis Nr. 11485
\r\n
\r\nTo take part in the public defense, please contact directly the speaker
Thesis Director: Prof. D. Constam,
\r\nMolecular Life Sciences doctoral program
\r\nThesis Nr. 11220
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\r\nTo take part in the public defense, please contact directly the speaker
Thesis Director: Prof. P. Ricci,
\r\nPhysics doctoral program
\r\nThesis Nr. 12040
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\r\nTo take part in the public defense, please contact directly the speaker