Brian Shaev

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

James Shires has contributed a chapter to the proceedings of the 13th International Conference on Cyber Conflict (CyCon 2021), which gathers 20 articles from the law, technology and strategy domains.

On 24 September 2020, Bernardo Ribeiro de Almeida defended his thesis 'Building land tenure systems: the political, legal, and institutional struggles of Timor-Leste'. The doctoral research was supervised by Prof. A.W. Bedner. Co-supervisor was Dr. C.I.M. Jacobs.

In this research note, Van der Does & Kantorowicz aruge that citizens that tend to experience political exclusion are often more supportive of direct and participatory forms of decision-making.

EU foreign policy has become increasingly politicised over the past years, amongst others as a consequence of the succession of crises. Crises may engender processes of crisis framing and contestation. This article focuses on how the policy demands being voiced in these processes of contestation are…

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.

On 12 April 2022 Alok Oak successfully defended a doctoral thesis and graduated.

View the tuition fee details for the MSc The Politics of Artificial Intelligence at Leiden University: statutory rates for EU/EEA applicants and institutional fees for non‑EU students.

View tuition fee information for the MSc Political Theory: Legitimacy and Justice at Leiden University, including how fees vary by nationality, residency status and programme category.

What is the role of local authorities and communities in shaping how inter-Schengen borders are understood and dealt with?

On 1 September 2022 Güldeniz Kibris successfully defended a doctoral thesis and graduated.

This article introduces the concept of Repertoires of Comparison (RoCs) to explain how certain comparisons become deeply embedded in social and political life.

What makes a pension scheme sustainable? Most answers to this question have revolved around expert assessments of pension schemes’ affordability or adequacy. This study shifts focus from the financial or social sustainability of pension scheme designs to their political sustainability. The key question…

As Bolivia reels from the collapse of the government in November 2019, a wave of social protests, and now the impact of Covid-19, this book asks: where next for Bolivia?

What drives the restrictiveness of immigration reforms? Political scientists Katharina Natter (Leiden University), Mathias Czaika (Danube University Krems) and Hein de Haas (University of Amsterdam) analysed immigration reforms in 21 Western immigration countries between 1970 and 2012. They found that…

When we think of politics, we tend to think of adversary, antagonism, polarisation, a struggle for power. But politics should serve positive purposes, as well. Political psychologist and meditation teacher Femke Bakker (Leiden University) thinks that positive politics is first and foremost about tolerance.…

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.

Dutch politics has long been a paragon of stability. Think, for example, of our party system until, say, the last decade. At the same time, we also see occasional changes and significant shifts. Society has changed and this is reflected in, among other things, how we vote and how policy is made. About…

Muhammad Adlin Sila examines the range of ways Bima Muslims constitute their Islamic identities and agencies through rituals and festivals. In response to their surroundings, what it means to be a Muslim is constantly being negotiated.

The complexities of modernization in Brazil and Graciliano Ramos significance for our understanding of Brazil today.

This COIn Grant 2025 awarded project allows Leiden University researchers and students to do research on the world’s largest corpus of digitized Ottoman language periodicals and books.

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.

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…

Does the political context (e.g., democracy vs. authoritarianism) influence what makes people perceive authorities as legitimate?

Subjects Barbarian, Monstrous, and Wild responds to a contemporary political climate in which historically invested figures of otherness—barbarians, savages, monsters—have become common discursive currency.

A new paperback edition of Brian Heffernan's book Freedom and the Fifth Commandment. Catholic priests and political violence in Ireland, 1919-21 was published by Manchester University Press in September 2016.