Filetype
A computer program for evaluating colour factors of QCD Feynman diagrams is presented, and illustrative examples on how to use the program to calculate nontrivial colour factors are given. The program and the discussion in this paper is based on a diagrammatic approach to colour factors.
We discuss various models and chiral perturbation theory results for the K14 form factors F and G. We check to what extent a simple parametrization with a few parameters can be used to extract information from experiment.
Världen som vi känner den hålls samman av fyra grundläggande krafter. Gravitationskraften drar oss mot jorden och håller samman planeter, stjärnor och galaxer. Den elektromagnetiska kraften styr i princip allt annat vi upplever i vår vardag. Den starka kärnkraften håller samman protoner och neutroner i atomkärnor och binder de kvarkar som i sin tur bygger upp dessa partiklar, och den svaga kärnkraWe present a generalisation of the flavour-ordering method applied to the chiral nonlinear sigma model with any number of flavours. We use an extended Lagrangian with terms containing any number of derivatives, organised in a power-counting hierarchy. The method allows diagrammatic computations at tree-level with any number of legs at any order in the power-counting. Using an automated implementat
Context. The solution of the nonlocal thermodynamical equilibrium (non-LTE) radiative transfer equation usually relies on stationary iterative methods, which may falsely converge in some cases. Furthermore, these methods are often unable to handle large-scale systems, such as molecular spectra emerging from, for example, cool stellar atmospheres. Aims. Our objective is to develop a new method, whi
This data set contains the data from the Galileo dust detector system (GDDS) from start of mission through the end of mission. Included are the dust impact data, noise data, laboratory calibration data, and location and orientation of the spacecraft and instrument.
P-mode oscillations in the Sun and stars are excited stochasticly by Reynolds stress and entropy fluctuations produced by convection in their outer envelopes. The excitation increases with increasing effective temperature (until envelope convection ceases in the F stars) and also increases with decreasing gravity.
Abstract The majority of airborne particles in residences, when expressed as number concentrations, are generated by the residents themselves, through combustion/thermal related activities. These particles have a considerably smaller diameter than 2.5 μm and, due to the combination of their small size, chemical composition (e.g. soot) and intermittently very high concentrations, should be regard
Course Analysis for MATA21 Analysis in One Variable, Autumn 2022 Course information Lecturer: Jan-Fredrik Olsen Teaching assistants: Thomas Munn, Giang To, Alex Bergman Number of students: 89 newly registered and 26 re-registered. 36 students answered the course evaluation Examination Ordinary examination (2023-01-09): 61 out of 86 attending students passed. Out of these, 20 got the pass with dist
https://www.maths.lu.se/fileadmin/maths/Matematik_NF/Kursutvaerderingar/HT2022/MATA21HT22.pdf - 2026-05-25
I denna rapport undersöks och utvärderas brandskyddet och möjligheten till utrymning vid nödsituation i Helsingborgs Arena. Undersökningen har baserats på noteringar från platsbesök, simuleringar av tänkta scenarion och kvalitativa resonemang. Utifrån dessa undersökningar har det framkommit att den största risken för människors liv vid brand i Helsingborgs Arena är vid brand i en av garderoberna
Popular Abstract in Swedish I min forskning undersöker jag hur lagar och regler om asyl översätts till praktik i handläggningen av asylärenden i Sverige. Mina utgångspunkter är samhällets organisation av asylprövningen och strukturerna i denna organisation. I avhandlingen finns en redogörelse för ett enskilt fall. I detta fall finns en mängd av de olika problem som uppstår i asylärenden represente
ESA's Gaia mission will provide accurate astrometric, photometric andspectroscopic data for millions of stars in the Galaxy and beyond. Wediscuss the prospects of using this vast amount of astrophysicalinformation for understanding star formation histories in the Galaxy andits immediate neighbors within the Local Group.
This paper gives a brief overview of the Gaia Research for European Astronomy Training (GREAT) network, including a description of the GREAT-ESF Research Network Programme and the GREAT Initial Training Network (GREAT-ITN). Scientific highlights from the GREAT-ITN are noted.
An implicit water all-atom model is used to study folding, aggregation and mechanical unfolding of small proteins. Physically reasonable results obtained for a variety of applications indicate healthy global properties of the interaction potential.
What can be done when combining leftover material from small scale wood and textile productions? The increased awareness of the importance of sustainability has created a possibility for a more climate friendly future. But at the same time, biodiversity is at risk due to overstraining practices used by forest and textile industries. Do we have to choose between one or the other when ensuring a gre
https://www.industridesign.lth.se/en/repurposed - 2026-05-27
Under Forskarfredagen 2016 diskuterar vi ESAs rymdsond Rosetta, dess lilla landare Philae, hur de tog sig till kometen 67P och vad de upptäckte där.During Researchers Night 2016 we are discussing ESA's mission Rosetta, its lander Philae, how they traveled to the comet 67P and what they discovered there.
The globular clusters of large spiral galaxies can be divided into two populations: one that formed in situ and one that comprises clusters tidally stripped away from other galaxies. In this paper, we investigate the contribution to the outer globular cluster population in the M31 galaxy through donation of clusters from dwarf galaxies. We test this numerically by comparing the contribution of glo
