Promotor: A. Achúcarro Co-promotor: A. Boyarsky

The Standard Model (SM) of particle physics fails to explain several observed phenomena and is incomplete. In order to resolve this problem, one may extend the SM by adding new particles.

Promotor: J. Zaanen, Co-Promotor: V. Juricic

With our research and teaching, we help make the world a better place. We join in the academic and public debate, and seek answers to economic and social issues – not just at the local and regional level but at the global one too.

Are you graduating at the Faculty of Science? Or are you supervising a PhD student? At the Graduate School of Science you find support at every phase of your PhD.

The focus of the dissertation

Promotor: Prof.dr. A. Achucarro

Promotor: T. H. Oosterkamp

The specialisation High-Tech Innovation is for MSc students in Sciences who are interested in interdisciplinary technologies and research related to /important for high technology industries, e.g. the semi-conductor industry or nano-fabrication. In addition to their primary field of study, students…

The Algorithms and Software Technology (AST) research programme performs fundamental research in the areas of algorithm design and analysis.

Organic molecules in interstellar space are important as they influence the structure of galaxies and star formations. Studying catalytic processes in space allows us to understand how molecular species are formed and chemically evolved in the interstellar medium and solar system objects.

Get to know us through our online and in-person events for prospective students!

The research of the Algebra, Geometry and Number Theory cluster tries to bridge the gap between abstract theory and the world of algorithms and applications.

Artificial photosynthesis aims to produce fuels from solar energy using chemical processes. In semi-artificial photosynthesis, a hybrid approach is taken using both chemical and biotechnology approaches. We aim to develop hybrid systems between light-harvesting nanoparticles and redox-enzymes (oxidoreductases)…

Leiden University offers you several services related to career orientation and job application skills.

In this thesis we study the landscape of gravitational models which modify GR by introducing an additional scalar degree of freedom (d.o.f.) to source Cosmic Acceleration.

This thesis focuses on developing wafer-scale two-dimensional (2D) materials by combining synthesis, transfer, characterization, and device integration of graphene, hexagonal boron nitride (h-BN), and BN-doped amorphous carbon.

Leader in law and technology education and research since 1985.

A novel in vivo model system for studies on glucocorticoid resistance

Moving an electron microscope of 2000 kg is a delicate challenge. The highly sensitive instrument needed to be moved to a new measurement hall, but even a tiny bump could damage it. After a few nerve-racking weeks of preparing the move and reinstalment, the researchers finally have a verdict: the instrument…

The International Reynard Society studies the role of animals in the European literature of the Middle Ages and its afterlife. It focuses especially on beast epics, fables, and fabliaux. The 24th international colloquium of the Society – Of Foxes and Fish: Interdisciplinary Approaches to Medieval Animal…

From a meaningless block of plastic to an advanced component that contributes to the energy transition. The technicians and scientists of our faculty think it out in detail and make it a reality. This special project shows that they need each other.

Following in the footsteps of Professor Jan Zaanen, visiting fellow Louk Rademaker is exploring quantum effects in so-called strange materials. His research is paving the way for new materials that could be used in emerging technologies.

Leiden physicists have developed a way to address how accurately a superconducting single photon detector (SSPD) can be characterized by detector tomography. SSPDs are not fully understood, and tomography is a key element to determine how these devices detect light. A better understanding of these detectors…

The aim of the research project is to get insight in the biostratigraphical age and the palaeoecological setting of the Schöningen sites and hominin behavior and subsistence during the late Lower Palaeolithic.

A step-by-step approach to building confidence in anxiety-prone young children.

When you imagine a scientific conference, you might think of endless presentations and coffee breaks. But at the Lorentz Center in Leiden, things are a little different. Here, scientists don’t just listen—they collaborate, debate, and design the future of their field.

Ten years after its introduction, the controversial idea of Erik Verlinde on gravity is still a hotly debated topic, and is still surrounded by a cloud of scepticism. Scepticism in which the media have played a major role, theoretical physicst Koenraad Schalm says in an article by NWO. ‘The media simply…

In just over a decade, Uber has revolutionised how we move around our cities. The ride-hailing app was a game-changer: you just tapped your phone and a cab would find you. You even paid through the app. However, some of the Uber’s more controversial practices have triggered the interest of law enforcement,…

The Global Abolitionisms Network, established in 2015, is an international network of scholars working on antislavery activism and abolitionism. It is affiliated to the Leiden Slavery Studies Association.

Bachelor, Master

The Children’s Rights Education Fund is an initiative that strengthens global leadership in children’s rights by offering financial support to students of the Advanced LL.M. in International Children’s Rights at Leiden Law School.

Legal education initiative of the Leiden University, the University of Groningen and Universitas Indonesia.

The Decolonising Collective Leiden is a platform for staff and students interested in exploring strategies to foster pluralistic, diverse, and decolonised knowledge production at Leiden University. While many discussions about decolonisation are ongoing in discrete spaces across the University, there…

How did persistent social inequalities first emerge? What cultural trajectories and institutions made this key development possible? How can archaeological inform us about the formation of class societies?

In this project Principles and Best Practices for Insolvency Office Holders (IOHs) for cross-border insolvency cases are developed.

At CWTS, we offer a range of educational and training activities designed to equip students, researchers, and professionals with the skills and knowledge to better understand the science system and its interactions with society.

On a stormy Tuesday evening in June an Alumni Seminar was held for alumni and students of the (International) Leiden Leadership Programme for which a special international guest had been invited: Dr. Anna Dolidze.

The corona crisis has fuelled the discussion on social interests which has consequences for those looking out for these interests; it should be handled in a more socially responsible manner in which the government has an important role to play.

On 25 September, lights throughout Leiden will be turned off for the Seeing Stars event. What makes the urban night so special? We asked university lecturer Sara Brandellero, who researches cities, night and migration.

People with relatively high levels of lipids in their blood are less likely to develop allergic conditions such as eczema and asthma. These lipids cause genes that play a key role in allergic reactions to be less active. Researchers from the Leiden University Medical Center (LUMC) have published an…

When a baby is born too soon, every minute counts – and so does every decision. To reduce uncertainty in those critical moments, biopharmaceutical scientist Manchu Umarani Thangavelu dedicated her PhD to identifying molecular markers of preterm birth and neonatal infection.

University lecturer Andrew Gawthorpe comments in the Sydney Morning Herald on the possibility the USA have fewer munitions available for other conflict zones, such as Ukraine.

Leiden scientists are the main applicants for five projects that have been awarded a Science Groot grant of up to 3 million euros in the Science Domain. In addition, several Leiden scientists are involved in other projects that have been awarded funding.

Plants, algae and cyanobacteria have the amazing capacity to perform delicate photophysical and photochemical processes of light capture, excitation transfer, charge separation and catalysis in fluctuating living environments. As a consequence, photosynthetic proteins and membranes form dynamic architectures.…

The 'Intelligent Lockdown' has lasted over a month now, which makes experimental physics research hard to do, if not downright impossible. Even so, work is continuing. Five Leiden physicists tell us about it.

On October 26, Gianclaudio Malgieri (Associate professor at eLaw) moderated a plenary panel about

On Friday, November 17, 2017, Assistant Professor Jens Iverson provided the Keynote for the annual symposium by the Minnesota Journal of International Law: Jus Post Bellum: Justice After the War.

Last week almost 80 LUC students together with the student association Fortuna took part in the annual UCSRN tournament.