Edited by linguists Jenny Audring (Leiden University) and Francesca Masini (University of Bologna), this is a unique handbook with a focus on morphology theories rather than morphological data. It covers a wide array of morphological theories, from traditional twentieth century models to current theoretical…

The focus of our theoretical physics research is the nature of macroscopic matter that is in one or the other way still in the grip of quantum physics.

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…

This political theory specialisation focuses on the concepts of legitimacy and justice—political philosophy’s core themes. Immersing yourself in theories, philosophical and theoretical methods, and complex cases, you will make the leap from opinion to analysis.

The master in Cultural Analysis: Literature and Theory at Leiden University focuses on the study of literature from a comparative and theoretical perspective, with a special emphasis on literary movements and genres of the 19th, 20th, and 21st centuries. It covers a wide range of languages and cultures…

Are you thinking about studying Cultural Analysis: Literature and Theory? Learn more and watch the videos.

'Politics of Withdrawal' considers the significance of practices and theories of withdrawal for radical thinking today.

Promotor: K.E. Schalm, Co-promotor: S.S. Lee

The Summer School on International Humanitarian Law is designed by the Grotius Centre Kalshoven-Gieskes Forum on International Humanitarian Law. Application is now open!

Humanities, Institute for History

We always have several ongoing studies running in our labs. Below you can find information about each one.

The terms ‘social’ , ‘collective’ or ‘public’ memory, are often contrasted with ‘private’, ‘individual’ or ‘personal’ memory. All these terms derive from a fairly new and interdisciplinary scholarly field that is often referred to as ‘memory studies’, and that according to some critics has developed…

Mindfulness is all the rage. But what is mindfulness and is this popular form of medication completely harmless? Come to the workshop on 19 September by Chris Goto-Jones, Professor of Philosophy and mindfulness therapist, and find out for yourself.

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

Max van Duijn, Assistant Professor at the Leiden Institute of Advanced Computer Science (LIACS), has been awarded a Veni grant for his research into children's empathy. The ability to empathise can be studied by telling stories. This process, known as 'Theory of Mind' or ‘mindreading’, can provide important…

When we are around four years old we suddenly start to understand that other people think and that their view of the world is often different from our own. Researchers in Leiden and Leipzig have explored how that works. Publication in Nature Communications on 21 March.

Promotor: J. Zaanen

This study looks at the question of how and at what level students in primary teacher education can integrate theory and practice, and how the organisation of their learning environment, focusing especially on mathematics and pedagogy, can contribute to that.

Is there a causal mechanism underlying the decision to attack another country when on the brink of war? If so, does this mechanism differ between regime-types? Political scientist Femke Bakker (Leiden University) addresses this question from a political psychological and comparative perspective and…

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.

Schalm

In this work we describe three methods to improve the performance of Quantum Field Theory calculations.

The linguistic project constitutes the connection between the two other subprojects. It consists of two parts.

Organized by the Grotius Centre for International Legal Studies, this programme enables students and professionals from all over the world to engage in discussions on the prospects and challenges of international criminal justice. Application is now open!

On 16 april 2020, Andrew Fink defended his thesis 'The Importance of Conspiracy Theory in Extremist Ideology and Propaganda'. The doctoral research was supervised by Prof. A. Ellian.

Systems with local constraints is a new finding in recent researches on complex systems. The heterogeneous spatial interactions and the temporal dependencies among those numerous units make it difficult to describe by traditional statistical physics.

Following their application to system biological models, control theory techniques have further potential to aid in the understanding and application of quantitative systems pharmacology models.

The next generation of high-contrast imaging instruments on space-based observatories requires sophisticated wavefront sensing and control in addition to a high-performance coronagraph.

The ‘empathic mind’ in children with Specific Language Impairments (SLI); what can children with SLI understand of other people’s minds and emotions?

While self-driving cars and autonomous weapon systems have received a great deal of attention in media and research, the general requirements of ethical life in today’s digitalizing reality have not been made sufficiently visible and evaluable.

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

On 19 December 2019, Reza Eftekhar defended his thesis 'The Role of the Domestic Law of the Host State in Determining the ratione materiae Jurisdiction of Investment Treaty Tribunals: The Partial Revival of the Localisation Theory'. The doctoral research was supervised by Prof. E. de Brabandere.

Medicine/LUMC, Science

This Thesis shows discoveries in non-linear astrochemical kinetics as well as a deeper analysis of dark clouds chemistry.

The book offers different theoretical perspectives to help examine the process of public sector reform. In addition it gives an overview of the major trends in the core areas of the functioning of the public sector.

Science, Mathematical Institute (MI)

This thesis is is made of three parts. The first part describes a generalization of the Chabauty's method, that can be used to determine the rational points of a curve such that s+g>r+1, where g is the genusof the curve, r is the rank of the Mordell-Weil group of the jacobian of the curve and s is…

Fascism tends to be relegated to a dark chapter of European history, but what if new forms of fascism are currently returning to the forefront of the political scene?

This collection brings into conversation several kinds of scholarship on medieval authorship which have tended to remain separate over the last two to three decades, a period of steadily increasing scholarly interest in this topic.

The aim of this project is to study the influence of Longinus’s treatise ‘On the sublime’ on practice and theory of architecture and theatre in seventeenth-century Paris and Amsterdam.

Playing the piano with your forearm, plucking the strings, sawing through the piano: pianist Luk Vaes's doctoral dissertation covers all the techniques of play for which a piano is NOT designed. His defence ceremony will consist of three concerts and a public defence. 'Musicians were using the interior…

So-called

Cognitive enhancement reflects the use of any (legitimate) means such as for example food supplements to reach one’s personal best.

Promotores: Prof.dr. E.F. van Dishoeck, Prof.dr. C.P. Dullemond

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'.

Why do black holes emit thermal radiation? And how does a closed quantum system thermalize?

Drawing on a broad array of sources, this project examines modern retrievals of Bacon’s idols, thereby testing Justus von Liebig’s intriguing observation, back in 1863, that Bacon’s name lived on mainly in mottos or stereotypical phrases. More importantly, it examines the rhetorical purposes served…