Promotor: Prof.dr. P. Stevenhagen & Prof.dr. K. Belabas (Univ. de Bordeaux)

The focus of Jan Zaanen's theoretical physics research was the nature of macroscopic matter that is in one or the other way still in the grip of quantum physics.

The Educational Sciences programme group of the Institute of Education and Child Studies at Leiden University provides courses in the field of student education and the learning and development of children in the school context.

Truth is stranger than fiction. In 1997 Juan Maldaceña discovered a remarkable dictionary that translates equation for equation the physics of black holes in string theory into the more conventional physics of quantum mechanics of interacting particles. The remarkable possibility exists that…

The programme group Research Methods and Statistics offers support to researchers from a variety of research projects within Education and Child Studies.

The focus of our theoretical research is understanding the behaviour of soft condensed matter, physical matter which is deformed or structurally altered by thermal fluctuations or small stresses.

Enforcement of group cooperation fails because of discriminatory punishment, according to research by Welmer Molenmaker and colleagues. When group members have different backgrounds, punishment turns into a double-edged sword: no longer used just to prevent group exploitation, but also to break the…

The thesis focuses on synthesis strategies in oligosaccharide campaigns, and the influence of protecting groups.

The development of space resource activities is happening now. In the absence of a clear framework to govern these activities, there is a need to examine the concepts that are being discussed in order to ensure that they meet existing treaty obligations regarding on-orbit operations and space resource…

The Leiden Political Economy Group (L-PEG) is a multi-disciplinary network of scholars with a research interest in (comparative / global) political economy based at Leiden University. Our members belong to various institutes and faculties across Leiden University, and from other universities across…

We explore the particle physics and quantum world at the time of the big bang.

Interest groups play an important role in democratic society.

The group Theoretical Physics of Life Processes, led by Helmut Schiessel, focuses on the physics of chromatin, the DNA-protein complex that fills the nuclei of eukaryotic cells.

The program group Learning and Behavior Problems in Education is located in the Faculty of Social and Behavioural Sciences of Leiden University near Central Station.

The program group Forensic Family and Youth Care Studies is located in the Faculty of Social and Behavioural Sciences of Leiden University near Central Station.

This book offers novel perspectives on the national and international dimensions of the post-war welfare state in Western Europe and North America.

The programme group Parenting, Child Care and Development is located in the Faculty of Social and Behavioural Sciences at Leiden University near Central Station.

Industrialised countries extract natural resources in the territories of indigenous peoples, and appropriate the knowledge and culture of these peoples. Leiden anthropologists work to protect the rights of indigenous peoples. Their knowledge and advice enable governments to source sustainable produc…

We study the structure, dynamics and physics of complex networks emerging from the intricate interconnectedness of the constituents of large systems.

The Terrorism and Political Violence research group at Leiden University examines the causes of radicalisation, the tactics of extremist groups, and the effectiveness of counter-terrorism policies. We also explore the role of the media and the influence of postcolonial legacies in the Global South,…

Let A be a commutative algebraic group over a field K, and let G be a finitely generated subgroup of the K-rational points of A. The purpose of this thesis is to study the degrees of the Kummer extensions relative to A,K and G.

Promotor: Prof.dr. W.T.F. den Hollander, Prof. dr. E.A. Verbitskiy

Most of current public-key cryptography is considered insecure against attacks from sufficiently powerful quantum computers. Post-quantum cryptography studies methods to secure information resistant against such attacks. One proposal is isogeny-based cryptography, which bases its security on computational…

Within the bachelor's program of Education and Child Studies, we include the minor Kindermishandeling en Verwaarlozing: een levensloopperspectief and several other courses.

In this thesis we classify the pairs (p,G), where p is a prime number and G is a finite p-group possessing an intense automorphism, i.e. an automorphism that sends each subgroup of G to a G-conjugate, that is non-trivial and whose order is coprime to p.

The aim of this study was to provide insight into how teachers in higher education can be supported in the design, implementation and evaluation of group assignments by developing a theoretical and evidence-based framework for the design of group assignments.

On 1 April 2020, Ivan Romashchenko defended his thesis 'Related Party Transactions and Corporate Groups: When Eastern Europe Meets the West'. The doctoral research was supervised by Prof. S.M. Bartman en Prof. A. Radwan (Kaunas, Lithuania).

Can SMILE, our multi-component intervention, which combines cognitive-behavioural therapy for insomnia, mindfulness, stress, and lifestyle components, improve sleep quality? Can it also improve mood and quality of life and prevent depression and anxiety in the long term?

Which consumer groups post the greatest cost to public health and the planet through their food choices, and how can we use this fine-scale information to accelerate a sustainable dietary transition?

Why does one person radicalize to involvement in terrorist violence within a group-based context, while another engages in this form of violence alone?

How does self-reliance lead to a decrease in collaboration for public goods?

Brian Shaev

In this article, Tokdemir & Klein examine the strategic actions of governments against domestic terrorist groups and domestic terrorist groups’ reactions to such actions.

This article discusses the impact of symbolic gender representation on the willingness of citizens to coproduce.

On 23 April, Rowie Stolk defended the thesis 'Interest group litigation in the Dutch polder: An interdisciplinary perspective on access to the courts'. The doctoral research was supervised by Ymre Schuurmans and Jerfi Uzman.

The Greek and Roman History Team concentrates on the study of the economies, societies and cultures of the large empires of the Graeco-Roman world, starting with the empires of Alexander the Great and his successors.

The Clinical Psychology Unit is organized as follows:

Many lecturers aim to make their courses more diverse, but they often encounter problems in the process. How can they receive the information they need? This project ‘Wanted: roadmap’ develops a roadmap for Dutch (academic) historians to bring diversity into practice. BA1 teaching in Graeco-Roman history…

With the rise of information and communication technologies, large amounts of data are being generated and stored in databases. In order to get a better grip on these large amounts of data, serious efforts are being made to discover patterns and relations in the data with the help of new techniques.…

The research in my group addresses a range of topics related to quantum many-body physics.

This monograph by dr. Kim Beerden compares Greek divination to divinatory practices in Neo-Assyrian Mesopotamia and Republican Rome.

Which plants in the Mediterranean garden were already known to the ancient Greeks and Romans, and how were they utilized?

This study seeks to partially fill the knowledge gap about national culture in Africa, basing its research on data on ethnolinguistic groups (instead of administrative regions).

The opening of the Academic Year 2016-2017 took place on Monday 5 September 2016 in Pieterskerk church.