Events - Page 20

Time and place: Oct. 22, 2014 1:05 PM, FØ467

Michael Kachelriess, NTNU [slides]

The IceCube Collaboration announced 2012 evidence for the first detection of extraterrestrial neutrinos. Meanwhile, the discovery of a extraterrestrial neutrino flux (of surprisingly large magnitude) has been established. After a review of the basic ideas of high-energy neutrino astrophysics, I discuss possible sources for these neutrinos and their signatures.  I  discuss the neutrino yield from collisions of cosmic ray nuclei with gas and the possibility that Galactic sources can explain the IceCube excess. I review also the cascade bound on extragalactic neutrinos and its consequences.

Time and place: Oct. 17, 2014 3:15 PM4:00 PM, PGP seminar room (FV414)

Unni Vik from the Centre for Ecological and Evolutionary Synthesis at the UiO will present us her work on bacteries and CO2.

Time and place: Oct. 15, 2014 1:05 PM, FØ467

Jörn Kersten, Universitetet i Bergen [slides]

Despite the astonishing success of the standard LambdaCDM cosmological scenario, there is mounting evidence for a tension with observations. For example, some measurements indicate that a part of the dark matter is hot. In addition, the observed properties of relatively small galaxies do not quite agree with the predictions by simulations of structure formation.

I will discuss a simple particle physics model containing cold dark matter (DM) and sterile neutrinos. Both are charged under a new gauge interaction. The resulting DM self-interactions and DM-neutrino interactions resolve the problems with structure formation. The sterile neutrinos can account for both a small hot DM component and the neutrino anomalies found in short-baseline experiments.

Time and place: Oct. 8, 2014 1:05 PM, FØ467

Anders Kvellestad, UiO

Recently a few small (but intriguing) deviations from Standard Model predictions have been identified in the LHC data, one being an excess in the dilepton spectrum in a CMS search for so-called 'kinematic edges' -- a classic signal of physics models with heavy particles decaying through sequential two-body decays. We present an interpretation of this excess in terms of a supersymmetric model with squarks undergoing such sequential decays down to the lightest neutralino, which is a viable candidate for particle dark matter. The good-fit parameter space of the model is presented, along with predictions for squark production at the upcoming 13 TeV LHC run.

Further, using the above analysis as an example, we briefly comment on the main challenges of confronting complex models like Supersymmetry with experimental results, and present an ongoing effort to overcome some of these challenges.

Time and place: Oct. 1, 2014 1:05 PM, FØ467

Marius L.  Meyer, UiO

In recent years there has been extensive interest in the study of strongly correlated states of cold atoms motivated by analogies with exotic states known from low-dimensional electronic systems, particularly quantum Hall states. In this talk I will present an analysis of the yrast states of two-component rotating Bose gases using Jain's composite fermion (CF) approach. A particularly simple subset of CF states are found to give very good approximations to the lowest energy states for low angular momenta.

Time: Oct. 1, 2014Oct. 3, 2014

Read more on the 7th SCOOP meeting web page

Time: Sep. 29, 2014Sep. 30, 2014

Read more on the meeting's web page

Time and place: Sep. 25, 2014 5:30 PM6:30 PM, The Norwegian Academy of Science and Letters

-A new window on our Space environment: The polarization of the auroral emissions. A French – Norwegian discovery.

Time and place: Sep. 19, 2014 3:15 PM4:00 PM, PGP seminar room (FV414)

Dag Kristian Dysthe (UiO, PGP) will tell us about:

"Concrete and sedimentary rocks, bringing PGP geology to industrial technology. Celebrating a new Marie Curie ITN coordinated by UiO"

Time and place: Sep. 17, 2014 1:05 PM, FØ467

Kjetil Børkje, UiO

Over the past few decades, tremendous experimental progress has been made to engineer and control artificial quantum systems. The motivation for this type of research will be discussed, both from a fundamental and a technological point of view. Some of the most important recent developments will be presented, with focus on two areas specifically: a) the quest to realize quantum information processing and b) the effort to bring large-scale mechanical systems into the quantum regime. A few examples from my own theoretical contributions to the field of cavity optomechanics will be discussed. Finally, I will try to identify some new challenges going forward.
Time and place: Sep. 16, 2014 12:15 PM1:00 PM, PGP seminar room (FV414)

Louis Renaud from INL Lyon, France (louis.renaud@univ-lyon1.fr) will give a seminar on soft-Lithography and Xurography for Microfluidics.

Time and place: Sep. 12, 2014 3:15 PM4:00 PM, PGP seminar room (FV414)

Elina Melteig will present us her work done in the context of the International Genetically Engineered Machine competition (iGEM).

Time and place: Sep. 10, 2014 1:15 PM3:15 PM, PGP seminar room (V414)

Thesis title: Blowing the viscoelastic trumpet - Experiment design for mapping stress-strain patterns in viscoelastic hydrofracture

Time and place: Sep. 4, 2014 12:15 PM1:00 PM, PGP seminar room, FV414

Anne Voigtländer, PhD student at the Technical University of München, will tell us about her research on material degradation in carbonate rocks. 

Time and place: Sep. 3, 2014 1:05 PM, FØ467

Øystein Elgarøy, UiO

On March 17th this year the team behind the BICEP2 experiment announced the discovery of so-called B-mode polarization in the cosmic microwave background radiation at large angular scales. There is some tension between their claim and the results from the Planck satellitte, but I will assume that it is correct and try to explain why it is important. What is the link between B-mode polarization and the physics of the very early Universe? 

Time and place: Sep. 2, 2014 11:15 AM12:15 PM, Aud. 1, Helga Engs hus

Fabiola Gianotti is a new honorary doctor at the University of Oslo. This is her acceptance speech.

The event is free and open to all, no registration necessary.

Time and place: Aug. 29, 2014 3:15 PM4:00 PM, PGP seminar room (FV414)

Bjørn Jamtveit and other project leaders in PGP will say few words each about their reserch projects. Since many new peple started lately, this will be also the occasion for people to meet and get to know each other.

Time and place: Aug. 22, 2014 3:15 PM4:00 PM, PGP seminar room (FV414)

Christoph Breitkreuz from the Univeristy of Freiberg, Germany will give a seminar on Spherulite and lithophysae – High temperature crystallisation domains in SiO2-rich volcanic rocks.

Time: July 28, 2014Aug. 6, 2014

The 3nd International Conference on New Frontiers in Physics (ICNFP2014) will be held 28.07-06.08.2014 in OAC, Kolymbari, Crete.

Time and place: June 30, 2014 1:15 PM2:15 PM, PGP seminar room (V414)

Thesis title: Laboratory Volcano Geodesy

Time and place: June 26, 2014 10:15 AM11:30 AM, Lille fysiske aud.

Thesis title: Quantitative technique analysis in XC-skiing

Time and place: June 17, 2014 12:15 PM1:15 PM, V414 - PGP seminar room

by Olivier Vincent (School of Chemical and Biomolecular Engineering, University of Cornell, USA)

Time and place: June 12, 2014 12:15 PM1:15 PM, PGP seminar room - V414

By Jasim Imran (Department of Civil and Environmental Engineering, University of South Carolina)

Time and place: June 11, 2014 1:05 PM, FØ467

Lars Andreas Dal, UiO

The nature of Dark Matter is one of the large open questions in physics today. Observations indicate that Dark Matter likely consists of an unknown species of particles, which allows for the possibility of indirectly detecting Dark Matter by searching for the decay/annihilation products from these particles in cosmic rays.

With its very low expected astrophysical background, the antideuteron channel is particularly well suited for such searches. I will here discuss the challenges in correctly calculating the expected cosmic ray antideuteron flux, with focus on the uncertainty from hadronization models employed in Monte Carlo event generators.

Time and place: June 6, 2014 3:15 PM4:00 PM, PGP seminar room, FV414

By Reidun Dahl Schlanbusch, SINTEF Building and Infrastructure