In this thesis, classes of strongly interacting quantum field theories, have been studied.

The worldwide race to the quantum computer is in full swing. This computer can bring about a breakthrough in discovering medicines and new materials. Leiden researchers, together with the TU Delft, are taking part in the race. There is now a dossier online about their work.

In a recent Physics World podcast, PhD candidate Felix Frohnert from Leiden University explains how his team uncovered hidden connections in scientific literature by using machine learning routines. With this information, it’s possible to predict promising new research ideas in quantum physics. Listen…

On 9 September, in the presence of King Willem Alexander, Secretary of State Sander Dekker presented the Spinoza Prize to four researchers, including two researchers from Leiden: archaeologist Corinne Hofman and physicist Dirk Bouwmeester. In the Nieuwe Kerk in The Hague, they unveiled their plans for…

Koen Bastiaans and his colleagues discovered a new quantum liquid unlike anything ever seen. They did it by using a technique that can be compared to listening to the sound of raindrops falling on a roof. Publication in Science 29 October.

Are Weyl particles the ideal conductors? Do cells without a cell wall play a role in chronic Tuberculosis infections? Carlo Beenakker and Dennis Claessen want to answer these questions. They both received a KLEIN grant from the NWO. With these grants, NWO wants to stimulate innovative, fundamental r…

Advanced sensing techniques require graphene with high quality and well-controlled surface chemistry.

To mark the university’s 450th anniversary, the Leiden Discoveries science route has been updated and was relaunched on the Night of Discoveries. New signs in town and a revamped website tell Leiden residents and visitors the stories of the city’s spectacular discoveries.

Leading computer scientists from a variety of fields share their expertise and insights. Dive into the minds of these researchers and learn about real-world applications, the future of AI and related technologies and cutting-edge research. From chatbots to cybersecurity, from quantum to children's stories,…

Are you in a position of talent coach, coordinator, mentor, dean, or teacher and looking for university programmes that provide an extra challenge for the students of your school? The Leiden University Honours Academy provides such a programme, where vwo-students from the final three years of high school…

Heterogeneous catalyzed processes are highly significant to the chemical industry. Dissociative chemisorption (DC) of molecules on surfaces is always considered as a step with a high degree of rate control for heterogeneous catalysis.

Promotor: Prof.dr. E. R. Eliel, Co-Promotor: M.J.A. de Dood

Exploring the mechanism of targeted nanoparticle-mediated drug delivery using the zebrafish model

Prostate cancer (PCa) is one of the most prevalent cancer in males.

Promotor: B. van de Water

This thesis focuses on the role of chemokine receptors CXCR3 and CCR2 in the inflammatory process and infection control using the zebrafish model.

Solar energy is used by photosynthetic organisms to drive energy required cellular processes. Is absorbed by two groups of pigments, located in the LHCs.

Promotor: Prof.dr. J. den Hertog

Promotores: Prof.dr. G.W. Canters, Prof.dr. T.J. Aartsma

To argue that people can control the relative contributions of goal-driven and stimulus-driven processes to decision-making and action selection.

In unconventional high temperature superconductors, supercurrent vortices are known to spoil the Landau levels. In this thesis the emergence of Landau levels is studied in different types of superconductors: Weyl superconductors, and the Fu-Kane heterostructure.

The Joan van der Waals colloquium is an ongoing bi-weekly lecture series.

Materials with strongly correlated electrons show some of the most mysterious and exotic phases of quantum matter, such as unconventional superconductivity, quantum criticality and strange metal phase.

Working for a top faculty? Discover the vacancies at the Faculty of Science and apply immediately.

To be eligible for Astronomy and Business Studies at Leiden University, you must meet the following admission requirements.

To be eligible forAstronomy and Data Science at Leiden University, you must meet the following admission requirements.

To be eligible for Astronomy at Leiden University, you must meet the following admission requirements. PLEASE NOTE: The specialisation High-Tech Innovation starts in September 2026.

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Leiden alumnus and writer Tomas Lieske has published a novel which is set in the house of Paul Ehrenfest. Ehrenfest was a famous physicist who organized round table events every Wednesday evening at his home in Leiden in the early twentieth century. The big names from modern physics frequented these…

This year, two Leiden physicists have earned a prestigious ERC Starting Grant. With a budget of 1.5 million euros, this is one of the largest individual grants for scientists.

This dissertation is an experimental study of laser-generated, atmospheric pressure, transient toroidal helium plasmas.

String theory has come under fire in recent years. Promises have been made that have not been lived up to. Leiden theoretical physicists have now for the first time used string theory to describe a physical phenomenon. Their discovery has been reported this week in 'Science'.

Four scientists from Leiden University have each been awarded a Starting Grant by the European Research Council (ERC). This grant, worth up to two million euros, gives researchers the opportunity to head up a research team for five years.

Former PhD, Bachelor and Master students of the Van Exter Lab

This thesis studies the geometry of representation varieties and character stacks. These are spaces parametrizing the representations of a finitely generated group, typically the fundamental group of a compact manifold, into an algebraic group G.

In some condensed matter systems, such as the surface of a 3D topological insulator, the electrons are effectively massless and we must necessarily use the massless Dirac equation to describe them.

On the 2nd of June, Valentina Carraro gave a lecture on the complementarity of human rights reviewing mechanisms in the United Nations and presented an original framework to assess the extent to which institutions within regime complexes repeat or contradict each other when delivering recommendations…

The long-held desire - to link structure directly to function and to explain molecular mechanisms based on basic chemical or physical principles - is finally coming closer, satisfying not only our scientific curiosity but also offering new solutions to the many challenges in the field of health, energy…

Prof. Dr. Richard Gill has recently joined as a member of the Foundational Questions Institute (FQXi). FQXi is an international association of scientists who explore the foundations of physics and cosmology.

In the spirit of 'unity in diversity', our objective is to promote insight into and appreciation for the wonder that the same physical laws and mathematical concepts apply to the whole of nature, from the largest to the smallest energy and length scales. We strive for the application of abstract theoretical…

One of the most important correlation functions in physics, especially in cosmology, is the energy density, which describes how much energy is present at each point in spacetime due to matter fields. A key contribution to the energy density of the primordial universe comes from gravitational waves (GWs),…