PhD defence

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'.

In the project ‘Coin production in the Low Countries: 1334-1789’, Leiden University, the International Institute of Social History, and Het Nederlands Economisch-Historisch Archief, team up to create a website that provides access to five centuries of coin production figures.

A recently published article, Productveiligheid en aansprakelijkheid voor AI (Product Safety and Liability for AI), by Gitta Veldt and Tycho de Graaf examines the European Commission’s proposed Artificial Intelligence Regulation.

Plants are colonized by an astounding number of microorganisms that can provide different life-support functions, including nutrient acquisition and protection against (a)biotic stresses like drought or pathogen attack.

The 2018 Physics Nobel Prize is awarded to Arthur Ashkin, Donna Strickland and Gérard Mourou for their research on optical tweezers based on lasers. Leiden physicists comment in the following media.

Hydrogen can help to solve the climate problem. At least, if we start producing it in the right, clean way. Leiden researchers mapped out the global environmental impact of hydrogen production and looked ahead to 2050. They published their work in Energy & Environmental Science.

Light reflects from a mirror, but where exactly does this reflection happen? Well, it depends, Martin van Exter and Corné Koks discovered. Their precise calculations, published in Optics Express, are important for designing optical cavities for quantum communication.

In a recent publication in Nature Sustainability, an international team led by Josephine Chambers from Wageningen University, and including Marja Spierenburg from the Institute of Cultural Anthropology and Development Sociology at Leiden University, have developed a practical tool for researchers and…

Many important topics in computer science, such as the correctness of software, the efficiency of algorithms and the modeling of complicated systems, depend on sound theoretical underpinnings. In the Theory group, we study these fundamental building blocks and develop verification methods to prove system…

The programme guarantees a thorough experience on the frontlines of physics research AND data science. It focuses on research areas where these fields overlap and in the process provides practical training of communicative and computer skills.

Yiya Chen is a Professor of Phonetics at the Leiden University Centre for Linguistics. She studies the sounds of languages with an interdisciplinary approach. The broad goal of her research is to understand the language structures and cognitive mechanisms that underlie speech and speech communication.…

BRAIN Biotech and the Leiden University will jointly develop an Aspergillus based production strain with high yield and thus contribute to a bio-based circular economy. The cooperation is based on BRAIN´s molecular tool BEC.

A team of researchers at the Institute of Biology Leiden, in collaboration with scientists from Utrecht University, has discovered a novel approach to improve the production of antibiotics and enzymes in the soil bacteria Streptomycetes.

Louk Rademaker is visiting fellow at Leiden University, Lorentz Institute for Theoretical Physics. He studies theoretical quantum matter physics, connecting the material science to fundamental concepts and methods.

Jan Zaanen, Professor in Theoretical Physics of condensed material, has been awarded a Spinoza prize. His pioneering ideas about the collective behaviour of quantum particles and high temperature superconductivity have often given him the reputation of being something of a rebel.

The Leiden Institute of Physics (LION) is the coordinating partner in the Qluster research project, which was awarded a 2,9 million euro FET Open grant by the European Union. The three-year project, which started on 1 December 2019, aims to produce many photon entanglement to aid quantum communication…

As of 1 June, Leiden University has appointed Sense Jan van der Molen as Professor Physics of Condensed matter. He investigates the unique electronic properties that arise when atomic thin layers are stacked on top of each other into new materials.

The production of history is a process of power. This is particularly relevant in Africa, where during both the colonial and the post-colonial era history has been written by hegemonic regimes. This historiography has in turn (re-)produced structures of domination, social exclusion and division.…

Promotores: Prof.dr. J. Zaanen & Prof.dr. K.E. Schalm

Steel production is likely to take up a large portion of our future carbon budget. Capturing CO₂ from coal-based production won’t solve the problem. Technologies that rely on renewables are more effective, but not enough to get to net zero.

Huub de Groot aims to understand the fundamentals of direct energy conversion by proteins, complexes, membranes and cells in natural photosynthesis for the chemical design of responsive matrices for direct energy conversion with high yield by artificial photosynthesis.

The government is investing 646 million euros and has set aside a further 3.5 billion to drive economic growth in the Netherlands. Much of the National Growth Fund will be used for scientific innovations. Leiden University is involved in three of the projects.

This article examines how motivational signals in job advertisements relate to public employers’ recruitment success.

On this page you will find an overview of awards and prizes granted to our staff and students in 2023, as well as special appointments at Leiden University and other institutions.

Koenraad Schalm studies string theory and its connections to models of particle physics and cosmology in particular.

A century ago, it was unclear whether the stars in the sky were clustered in groups, or widely spread in the universe.

In this thesis, we use low-frequency and high-frequency radio observations to address the following questions regarding quasars: is the radio loud/quiet quasar dichotomy real?

Promotor: S.M. Verduyn Lunel, Co-promotores: M.F.E. de Jeu, B. de Pagter

Promotor: P.J.J. Hooykaas, Co-Promotor: E.J. van der Zaal

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…

What physics controls the properties of quantum matter, such as how electrons flow inside high-temperature superconductors? This question has captivated the physics community and industry for decades, in part due to the great technological potential such materials have, but also because they have resisted…

Can we make quantum devices from quantum surprises? And can we explore and build life from the nanoscale up?

Majorana fermions in superconductors are the subgap quasiparticle excitations that are their own antiparticles.

Find out how to apply for Physics and Classical/Quantum Information at Leiden University by following our step-by-step guide.

What we buy and consume in Europe often has an impact on biodiversity somewhere else in the world. With a Horizon Europe Funding of 600.000 euros, assistant professor Laura Scherer and her team will develop models to look at the impact of global trade in non-food biomass. ‘After developing the models,…

To improve our teaching and reward excellent teaching assistants, the institute offers a Teaching Assistant Prize to the best teaching assistant of the semester.

The EU Product Safety Award encourages and honors innovative business initiatives and research that make a difference for consumers. This year, the Gold Medal was awarded to Eduard and Hadassah for their innovative research on diversity in robot design, testbed, and safety standardization

If you replace the standard hydrogen atoms in ice with a heavier variant, something odd happens. The volume occupied by the molecules increases by 0.1 per cent. Leiden chemist Jörg Meyer and his colleagues have created a theoretical model that describes this behaviour. Their research appeared on the…

A master's degree in Psychology at Leiden University combines theoretical knowledge with academic and professional skills, making you an attractive candidate for many employers.

The master's specialisation Occupational Health Psychology consists of three main parts: the mandatory and elective courses, a thesis and an internship.

The master's specialisation Applied Cognitive Psychology consists of three main parts: the mandatory and elective courses, a thesis and an internship.

Tonight 20:25, Julia Cramer, expert in quantum information and communication science, is a guest in the television science programma Atlas

The project has been done in the Quantum Matter Optics group under the supervision of Dr. Wolfgang Löffler and Prof.dr. Carlo Beenakker. The title of the presentation is:

The master's specialisation Bioinformatics at Leiden University focuses on research, development and application of computational tools and approaches for expanding the use of biological, medical, behavioral and health data.

Cryptographer Max Fillinger developed new methods to analyse a group of algorithms called commitments schemes. These schemes are building blocks for cryptographic protocols, which enable multiple parties that do not trust each other to work together safely. His PhD Defence is on 19 March.

The Cyber Security Academy, therefore, proudly and enthusiastically announces that on 8 February the second cohort of Master of Science (MSc) graduates in Cyber Security in the Netherlands will graduate at the Campus of The Hague Security Delta (HSD), the national innovation centre in The Hague and…