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School and society

The department of physics and astronomy offers information to and cooperation with the society in various ways, such as organizing exhibitions and demonstrations to schools and the general public, taking part in various working groups within our respective fields of research and by performing commissioned research and education (see links to the left).

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Current seminars

Searching for Chemical Signatures in the Milky Way: The AMBRE Project & the Gaia-ESO Survey

Speaker: 
Clare Worley
Department: 
U Cambridge, UK
Time: 
2015-03-05 14:00 - 14:45
Location: 
Hiorter's room (Å73101)
Type : 
Astronomy and Space Physics

Large scale spectroscopic programmes are significantly advancing the studies of the chemical and dynamic evolution and formation of the Milky Way. I will present here the results thus far of the AMBRE Project, an ambitious project to provide stellar parameters for all FGKM stars within the ESO Archive. While primarily undertaken to provide a higher level of information for searches within the ESO archive, I will present the various science verification outcomes from this extensive dataset. In particular extracting key samples of globular cluster and open cluster stars to explore the relations in metallicity and alpha element abundances derived from this homogeneous analysis.

Modern Methods in Amplitudes III

Speaker: 
Oluf Engelund
Department: 
Uppsala University
Time: 
2015-03-06 11:00
Location: 
Oseenska rummet, 73121
Type : 
Theoretical Physics

Scattering amplitudes can be computed with Feynman rules but that is not always the most convenient method and a lot of more efficient techniques are known. I will go through the basics of scattering amplitudes and explain the BCFW recursion relations which is very useful at loop level, then go on to discuss generalized unitarity which can be used to piece together loop-level amplitudes from tree-level amplitudes. Finally, I'll go through some of the basics concerning twistor string theories and the Grassmanian formulation of scattering amplitudes in N=4 SYM.