New: Een Podcast over Natuurkunde, a podcast about Leiden physics. In the first episode, Dirk van Delft tells about the Hendrik Antoon Lorentz biography that he wrote with Frits Berends.

Promotor: A. Achúcarro, Co-Promotor: G.A. Palma

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.

Reflective dialogue is an effective instrument for professional learning of teachers. This research considers the characteristics, development, stimulating and limiting conditions for reflective dialogues in the context of Dutch primary school teachers who collaborate and learn together. The goal is…

On October 31st, Margarita Gulian succesfully defended her doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Margarita on this great result.

Former Member of Parliament Lammert van Raan (PvdD) and alumna Eva Floris gave a guest lecture on the 13th of May on the Ecocide penalisation initiative bill. During the lecture, they discussed the idea behind the bill, the objections from politicians and the business community and the advice of the…

On 31 January 2014 Professor Willem Heiser (Psychology, Statistics and Data Theory) was awarded the distinction of Knight in the Order of the Dutch Lion. After his farewell lecture he received the royal honour for his exceptional academic, social and administrative achievements.

More people seeking asylum, overcrowded asylum accommodation and asylum procedures that take years because of a lack of capacity. The current government wants to declare an asylum crisis but what is that exactly and can they just do that?

On 6 September 2023, the General Court of the Court of Justice of the European Union delivered its ruling in T-600/21 WS and Others v Frontex, dismissing a damages claim brought by a family of Syrian refugees against the EU agency Frontex.

On 15 September Armin Cuyvers lectured on the legal challenges surrounding Brexit for the The Academy for Legislation, the most important educational institute for legislative lawyers in the Netherlands.

This dissertation aims to advance understanding of amoeboid single cell migration under the influence of changing physicochemical environmental properties. The particular focus is on the relatively unknown influence of differing physical properties in the extracellular environment, such as the migratory…

How can we understand the encounter between communities active in sustainability initiatives and governmental agents at the multiple institutional layers in the Netherlands?

Traces of a Colourful Past

The 2020 Physica Award has been awarded to physicist Martin van Hecke, a researcher at the Leiden Institute of Physics (LION) and the Amsterdam AMOLF. Van Hecke is one of the Netherlands most innovative researchers into the surprisingly complex behavior of systems that look simple at first sight.

The proposal made by the Dutch Benefits Agency (part of the Ministry of Finance) to issue one-off compensation payments of €5,000 in the wake of the Dutch childcare benefits scandal is causing a stir among the affected parents, lawyers and academics. Ymre Schuurmans, Professor of Administrative Law,…

Bredero (1585-1618) was known for his farces and comedies, but he also wrote one tragedy. According to Olga van Marion and Tim Vergeer, the play's main protagonists Rodd’rick and Alphonsus were not competing for the love of a lady, but were in love with one another.

Niels van Willigen (Institute of Political Science, Leiden University) puts Dutch participation in UN peacekeeping into an historical context. He analyses the reasons for the Dutch withdrawal from the 1990s onwards, and explores the obstacles and opportunities for a structural return. Van Willigen argues…

The Revolt in The Netherlands erupted in 1566 and tore apart the Low Countries. In Memory Wars in the Low Countries, 1566-1700 Jasper van der Steen explains how public memories of the Revolt in the Habsburg Netherlands in the South and the Dutch Republic in the North diverged and became the objects…

On 24 April it was announced that, following his farewell, archaeologist Professor Maarten Jansen was appointed Knight of the Order of the Dutch Lion. Unfortunately, due to the corona pandemic the actual ceremony will have to wait.

Mining the unusually rich diaries, memoirs, and poems written by Netherlandish Catholics, Judith Pollmann explores how Catholic believers experienced religious and political turmoil in the generations between Erasmus and Rubens.

On 26 April Professor of Experimental Physics Jan van Ruitenbeek was made a Knight in the Order of the Lion of the Netherlands. He received the decoration from mayor Emile Jaensch in Oegstgeest, where he lives. Van Ruitenbeek received the honour for his services to physics.

Emeritus professor Victor Halberstadt has been honoured with the Cross of Honour of the Order of the House of Orange.

Conference, Book presentation

As part of his guest professorship in Leiden, famous theoretical physicist Prof. Andrei Linde (Stanford University) gave a public lecture on June 23 at the prestigious Leidse Schouwburg in the historic city center. Linde is world-renowned for being one of the inventors of the theory of inflation, which…

The Dutch Research School for Theoretical Physics (DRSTP) has received excellent ratings from an independent international committee. The DRSTP is a school for PhD training which has grown out of a collaboration between the theoretical physics departments at six Dutch universities—including Leiden—and…

Generations of Leiden students and academics have done archaeological research into the early medieval history of Oegstgeest. This makes this old settlement one of the best-documented sites from that era. In a new book, Leiden researchers take stock.

‘Huis van het Boek/Museum Meermanno in The Hague exhibits book bindings by leading Dutch Art-Nouveau artists from the period 1890-1910. The exhibition will be open from March 22 to June 23 2019. The title of the exhibition is De Bijzondere Band: Art Nouveau-boeken van Dijsselhof, Lion Cachet en Nieu…

The acquisition and administration of the possessions of the “Teutonic House” in Utrecht, and its dependencies, in the Middle Ages until c.1600.

On 21 June, our beloved colleague Joan van der Waals passed away after a long and rewarding life.