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Using non-equilibrium Green's functions combined with many-body perturbation theory, we have calculated steady-state densities and currents through short interacting chains subject to a finite electric bias. By using a steady-state reverse-engineering procedure, the effective potential and bias which reproduce such densities and currents in a non-interacting system have been determined. The role o

Within quantum thermodynamics, many tasks are modeled by processes that require work sources represented by out-of-equilibrium quantum systems, often dubbed quantum batteries, in which work can be deposited or from which work can be extracted. Here we consider quantum batteries modeled as finite-dimensional quantum systems initially in thermal equilibrium that are charged via cyclic Hamiltonian pr

We report on a detailed investigation of the interband optics of self-assembled InAs dots embedded in a matrix of InP. In photoconductivity (PC) measurements, we observe optical processes related to the dots and a wetting layer, band-to-band excitation of the InP barrier, as well as to an interesting As-related impurity. In particular, the PC measurements reveal the electronic structure of the dot

På den här sidan har vi samlat viktig information om saker du behöver ha koll på före, under och efter din utlandsvistelse. Men tänk på att det inte är någon komplett lista. Du kan också behöva söka information på annat håll. Genvägar till sidans innehåll:Viktiga förberedelser innan du reserMedan du är ivägNär du har kommit hem Viktiga förberedelser innan du reserSom utresande student får du vara

https://www.lu.se/student/internationella-mojligheter/praktisk-information-utresande-studenter - 2026-07-16

In a composite film of Cdx Sey Zn1-x S1-y gradient core-shell quantum dots (QDs) and gold nanorods (NRs), the optical properties of the QDs are drastically affected by the plasmonic nanoparticles. We provide a careful study of the two-step formation of the film and its morphology. Subsequently we focus on QD luminescence photoactivation - a process induced by photochemical changes on the QD surfac

This dissertation deals with finite-size effects in a few different quantum many-body phenomena in ultracold atomic systems. The finite-sized systems were simulated numerically using both mean-field methods and methods beyond mean-field, e.g. quadratic configuration interaction and exact diagonalization. The thesis is based on five scientific papers:Paper I is about the finite-size effects in the

Forskarskolorna erbjuder unika möjligheter för dig som är doktorand och postdoktor. De ordnar kurser, seminarier och workshops. Vissa erbjuder även forskningsuppdrag. Forskarskolorna fokuserar på specifika ämnen eller teman och för samman unga forskare från olika akademiska bakgrunder som har gemensamma ambitioner och intressen. De drivs ofta i nära samarbete med näringslivet, den offentliga sekto

https://www.lu.se/forskning/utbildning-pa-forskarniva/forskarskolor - 2026-07-15

A large portion of the PhD education in Sweden is dedicated to courses. This made it interesting to explore potential course supervision challenges in the PhD programme. A multiple-case study was conducted to identify such challenges and explore how these are perceived by students and supervisors at the Faculty of Engineering of Lund University. By interviewing students and supervisors in five dif

Under Almedalsveckan 2026 är Lunds universitet som vanligt på plats med panelsamtal och seminarier i Visby 24-25 juni på Hästgatan 13. Dessutom medverkar många av våra forskare i andras paneler och diskussioner under hela veckan. Seminarier 24 juniSeminarier 25 juniUniversitetets medverkan i andra evenemang 22–25 juni Seminarier 24 juni Mat, mikrober och motståndskraft – bioteknikens roll för sven

https://www.lu.se/samverkan-och-innovation/popularvetenskapliga-arrangemang/almedalsveckan - 2026-07-15

Oil has been for the past 50 years the most widely used energy source. That is because oil contains a lot of energy and is easy to transport and store. But the use of oil has drawbacks; it is believed to change the earth’s climate due to the combustion and the emissions of the green house gases. The particles from the combustion cause problems for the human health. Today Oil accounts for 33 % of t