We don’t understand how some materials become superconducting at relatively high temperatures. Leiden physicists have now found a surprising connection with auxiliary black holes. It enables us to use our knowledge of black holes on the mystery of high-temperature superconductivity. Publication in Nature…

In the Dutch healthcare system, only MHC psychologists (GZ-psychologen) are licensed to practice psychology unsupervised.

This subproject, carried out by post-doctoral researcher Dr. O. Nieuwenhuyse, investigates changes and continuities in the functional, social and symbolic uses of the material culture, c. 6800-5800 BC. A contextually oriented approach is adopted, which pays attention to the local socio-economic and…

To be eligible for Theoretical Philosophy at Leiden University, you must meet the following admission requirements.

There are over 7,000 languages in the world and over half of the world’s population is bilingual. But how do all these people use their language? And how do these languages differ from one another? Under the slogan of ‘Interconnecting linguistic diversity,’ the researchers from the Leiden University…

The master's specialisation Astronomy and Cosmology at Leiden University covers all aspects of modern astrophysics, including observation, interpretation, simulation and theory. This programme is essentially based on combined research in astronomy and physics and is therefore open for students with…

The programme will give you the opportunity to choose from a broad range of topics to study. You will be part of an international multidisciplinary research team at our institute.

The MSc programme Physics offers 5 research-oriented specialisations where you can focus on Theoretical Physics, Quantum Matter and Optics, Biological and Soft Matter, or Cosmology. You can also combine Physics with education, management or science communication.

The War and Peace Studies track offers you a comprehensive understanding of the historical, theoretical, and practical dimensions of war and peace, while addressing the complex challenges of conflict and peacebuilding in the contemporary world.

Chemical reactions go hand-in-hand with an energy exchange with the environment in which they take place. Surfaces offer a variety of energy dissipation channels, constituted by the nuclear and electronic degrees of freedom of the atoms at the interface. Aiming at an improved future harvesting of energy,…

How did people in the latter part of the Late Bronze Age organize themselves in order to be able to erect massive structures such as tholos tombs, citadels and how did they interact with these materials and circumstances while constructing? What impact did such a changing landscape have on their day-to-day…

The curriculum in the first semester provides an overall introduction to public international law and international criminal law. The second semester is more track-specific and focused on interaction.

Public sector decision-makers operate amidst an abundance of information and unclear political objectives. Attention is the sine qua non of policy-making: What is attended to can be addressed in policy responses; what is overlooked or goes unnoticed cannot. Despite its importance, public administration…

In the specialisation Child and Adolescent Psychology , part of the Master in Psychology, you develop practical skills in assessing and managing developmental psychopathology.

Metals surfaces form a group of effective catalysts for the reaction of small molecules such as hydrogen (H2).

The HJD Article Award is a biannual award given to the published research article which best advances the theoretical and/or empirical study of diplomacy.

At the largest scales, two ingredients dictate the distribution of matter in the Universe. The first is dark matter, acting as an invisible scaffolding held together by gravitational forces.

This project aims to investigate the underlying (neurocognitive) linguistic processes of ellipsis resolution, particularly gapping.

Disciplinary History and Epistemology

Psychoeducational Assessment, Intervention and Rehabilitation (PAIR) publishes high quality articles on theoretical and empirical research regarding psychological and psychoeducational assessment, intervention, and rehabilitation in all areas related to cognitive and socio-emotional development.

In this thesis, we extend the concept of null models as canonical ensembles of multi-graphs with given constraints and present new metrics able to characterize real-world layered systems based on their correlation patterns.

The Special Issue of the European Journal of Applied Linguistics on ‘Language Ideologies: Old Questions, New Perspectives’ aims to offer diverse insights on language ideologies with a focus on methodological and theoretical questions.

This thesis explores Breaking of Ensemble Equivalence (BEE) in random graph models by examining the spectral properties of adjacency matrices. The goal is to identify spectral characteristics that differentiate random graph ensembles, enhancing the understanding of complex network structures and beh…

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

On 7 December 2021, Georgina Kuipers defended the thesis 'Beschadigd vertrouwen'. The doctoral research was supervised by Prof. W. den Ouden and Prof. M.A. van der Steen (EUR).

Heterogeneous catalysis is one of the fundamental processes of modern life, being common in industrial refinery and hydrogen vehicles, all the way to the living cell. The dissociation of H2 on Cu(111) is an important benchmark system for studying heterogeneous catalysis, with a large and varied amount…

Jochem van den Boogert defended his thesis on 18 November 2015

Promotor: Prof.dr. C.W.J. Beenakker

Courses cover a broad range of relevant subjects and provide in-depth theoretical knowledge as well as training in practical skills and advanced research tools.

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.

The overarching goal of this thesis is to set the foundations, but also make the first essential steps towards establishing a comprehensive, mesoscopic, hydrodynamic theory of epithelial tissues. The stage is set by an exhaustive study of topological defects in passive p-atic liquid crystals, singularities…

Promotor: Prof.dr. J. Zaanen, A. Parnachev

Introduces a novel trope of photographic images dealing with states of mental disorders; focuses on photographs that visualize disturbed corporeal and mental perceptions of the world and connects medium-specific characteristics of photography to concepts from mental disorder studies.

The Philosophy of Law Department is responsible for various courses both in the Bachelors and the Masters.

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

If you want to follow a full academic programme, the next step after obtaining your bachelor’s is a master’s degree (MA) at a Dutch or international university. And there may be no better place for your further master’s study than Leiden University!

Within the Linguistics specialisation, you can choose one of the suggested thematic routes. Depending on the theme of your choice, the programme prepares you for a career in various fields, such as speech technology, artificial intelligence, education, language documentation and language policy.

Do you have any questions about the master’s programme Theoretical Physics? Please contact us.

We highly value the precision and clarity brought by the use of analytic tools combined with creative and non-standard attempts to shine new light on the big questions of theoretical philosophy.

How we think about and act on the usefulness of scientific research has epistemological and political implications: what knowledge consists of, how it comes about and to what ends. In this dissertation, I situate the usefulness of scientific research in concrete places for knowledge exchange. The exchange…

Lecture, Com(parative) Syn(tax) Series

Lecture, Com(parative) Syn(tax) Series

Lecture, Com(parative) Syn(tax) Series

With a MSc in Chemistry you are well prepared for a wide range of career opportunities. The chemical industry is one of the largest contributors to economic prosperity worldwide.

Regional Federal Studies carefully reviews, selects and publishes high-quality articles dealing with various aspects of regionalism and federalism crossing substantive, thematic, geographical, theoretical, and methodological boundaries.

Natural Computing investigates algorithms and phenonema based on nature to create better and new computer science innovations.

After many years of preparations, CERN has approved a groundbreaking new experiment: the Search for Hidden Particles (SHiP). Physicist Alexey Boyarsky was involved from the start. ‘We know there is physics that’s missing and we aim to find it.’