For many system in statistical physics the microcanonical and canonical ensemble are equivalent in the thermodynamic limit, but not for all.

Stress komt veel voor in de huidige samenleving. Dit is zorgwekkend, aangezien onderzoek herhaaldelijk heeft aangetoond dat stress een negatieve invloed heeft op de lichamelijke gezondheid. Zo vergroot stress bijvoorbeeld de kans op hart- en vaatziekten.

In this thesis, we have used numerical approaches to study the effects of translational symmetry breaking on strange metallic systems as realised by the holographic duality⁠.

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…

Kunst en vrije tijd, Kunst en vrije tijd

The Copenhagen interpretation of quantum mechanics states that a measurement collapses a wavefunction onto an eigenstate of the corresponding measurement operator.

Laboratory, observation and modeling work on the dissociation of polycyclic aromatic hydrocarbons in interstellar environments and the formation of new molecular species through the fragmentation process.

This research focuses on the distribution of chemical elements in protoplanetary disks, the birthplaces of planets. These disks form around young stars and contain gas and dust, from which planets grow. Ice plays a crucial role in planet formation, aiding the clumping of dust particles and influencing…

Deelproject van “

Striga hermonthica, commonly known as witchweed, infests major cereal crops in Sub-Saharan Africa causing severe yield losses and threatening the livelihood of millions of resource poor farmers.

Promotor: P.D. Grünwald

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.

Het voorgestelde project evalueert hoe de kwetsbaarheid van migrantenmannen en -vrouwen werd geconstrueerd in politieke, publieke en mediadiscoursen, en hoe verschillen in de geconstrueerde kwetsbaarheid van invloed waren op de beslissing om te migreren, het migratieproces en het daaropvolgende vest…

Het Liliane Fonds en het Afrika-Studiecentrum van de Universiteit Leiden hebben de Impact Challenge Award 2019 gewonnen voor het project 'Breaking down barriers to exclusion. Building capacity for lobby and advocacy for children with disabilities'. De Impact Challenge Award is een nationale onderscheiding…

In the Schouwburgstraat, LUGO is currently redesigning the back-garden in order to increase biodiversity and make it a more beautiful space. Throughout October 2023 until March 2024, we will be making changes to the garden with our team of volunteers.

Promotor: J. Zaanen

Neanderthals at Pech-de-l'Azé I in South Western France had a striking use for manganese dioxide 50.000 years ago.

Promotor: P. J. J. Hooykaas Co-promotor: B. S de Pater

Docenten spelen een cruciale rol bij het implementeren van onderwijsvernieuwingen. Uiteindelijk hangt het succes van de implementatie af van de manier waarop docenten de vernieuwing vormgeven in hun dagelijkse lespraktijk.

Increasing the efficiency of gene targeting (GT) as a genome editing tool in plants has been an important goal in plant biotechnology.

On the 7th and 8th of November, Radboud University and Utrecht University are jointly organising a masterclass for (Re)MA students and PhD candidates on the life and times of those lay people dependent on monasteries.

Op maandag 19 mei 2025 organiseert Website Application Services van het ISSC in samenwerking met SC&M een Webinar Universitaire Website[s]. Tijdens dit online web event wordt je o.a. ge-update over diverse inhoudelijke zaken die voor jou als webredacteur belangrijk kunnen zijn! Ga via deze link…

Op maandag 19 mei 2025 organiseert Website Application Services van het ISSC in samenwerking met SC&M een Webinar Universitaire Website[s]. Tijdens dit online web event wordt je o.a. ge-update over diverse inhoudelijke zaken die voor jou als webredacteur belangrijk kunnen zijn! Ga via deze link…

Understanding DNA repair mechanisms is essential for advancing plant biotechnology and crop improvement. This study investigates how double-strand breaks (DSBs), induced by CRISPR/Cas systems, are repaired in the model plant Arabidopsis thaliana, and how these processes influence Agrobacterium tumefaciens…

The dissertation offers new tools and insights to computation and modelling of topological phases, with an emphasis on the aperiodic setting.

Ontdek het studieprogramma van de éénjarige MSc Nederlandse Politiek aan Universiteit Leiden: kernvak, keuzevakken, onderzoeksvaardigheden, scriptiebegeleiding en stageoptie.

A complex community of microbes develops in the infant gut shortly after birth. We call this community the infant gut microbiota. The microbiota influences the health of the infant, which makes the composition and function of the infant gut microbiota an important topic to study.

This dissertation is part of a broader research project that revolves around unraveling the evolution of balanced lethal systems.

This thesis deals with the use of sound in interactions in the context of participatory systems and data sonification. We investigate an interactive environment where participants perceive information of the data through sound elements.

This dissertation explores how Large Language Models (LLMs) can effectively and responsibly contribute to complex decision-making processes. By combining AI and human intelligence, Hybrid Intelligence (HI) emerges, allowing the strengths of both humans and machines to be utilized.

The human body consists of hundreds, perhaps thousands of different types of cells, each with different morphologies and functions, despite having the same genome.

Overall dispersion in LCA as result of inherent uncertainties, spread and unrepresentativeness.

Statistical considerations guide the design and implementation of the experiments that scientists perform. For instance, in a clinical trial about a the efficacy of a treatment, its effect in a certain minimum amount of patients has to be observed in order to make confident assertions about the efficacy…

This thesis investigates the evolution and fate of gaseous exoplanets, which are continuously shaped by stellar activity across both short and long timescales.

Contact information and visitor's address

The extensive use of electronic communication channels and other devices has opened new possibilities for collecting data on human behavior. This information is sometimes openly accessible, but largely part of administrative registration systems that are not open to the broader public. The data provides…

Promotor: H.S. Overkleeft, Co-Promotor: B.I. Florea

The thesis introduces three methods for high-dimensional prediction problems in the biomedical field. The methods make use of empirical and variational Bayes in the estimation.

Promotor: Peter Stevenhagen

Wetenschappers hebben een neutrino ontdekt met de hoogste energie ooit gemeten. Leidse natuurkundigen Maarten de Jong en Dorothea Samtleben werkten mee aan dit project, waarover afgelopen week te lezen was in alle kranten en op alle online media.

This thesis probes under what conditions quantum computing presents an advantage over classical computing.

This thesis investigates the structural evolution and assembly of galaxies since the first few billions years after the big bang.

In this thesis I describe the results of Pulsed Interleaved Excitation and Fluorescence (Cross) Correlation Spectroscopy (PIE-F(C)CS) combined with single-pair Förster Resonance Energy Transfer (spFRET) used to study dynamics in single nucleosomes, which depends on subtle differences in the length of…

Op 10 november 2021 verdedigde Carmel van Niekerk-Jacobs het proefschrift 'Realising the right to reproduce with assistance in South Africa'. Het promotieonderzoek is begeleid door prof.dr. J.J. Sloth-Nielsen en prof.dr. T. Liefaard.

This dissertation is an experimental study of laser-generated, atmospheric pressure, transient toroidal helium plasmas.

Promotores: J. Zaanen, A. Parnachev

Understanding interactions in quantum many-body systems remains one of the most profound and difficult challenges in condensed matter physics.

Thirty years ago, mutations in the BRCA1 gene were first linked to hereditary breast and ovarian cancer, establishing a genetic basis for cancer development.

Biopolymer sequencing with graphene edge-based tunnel junctions has the potential to overcome current limitations with the third generation of sequencing based on biological nanopores.

Regeneration is the ability of an organism to restore damaged or lost tissue with a functional replacement, and without scarring. Many lizards can regenerate their tails.