Tidlegare arrangement - Side 284

This thursday, at the Speciation Journal Club, we will discuss a paper on  Genomic islands of divergence , by Bay and Ruegg 2017 (Proceedings B)

Upcoming seminar in meteorology and oceanography:

Speaker: Helen Johnson is a Research Fellow at The Earth Sciences Department, University of Oxford (UK).

Xuemei Cheng from the Departent of Material Science and Engineering has submitted the following academic thesis as part of the doctoral work at the Norwegian University of Science (NTNU):

Doctoral candidate Master in Physics Endre Grøvik at Department of Physics will give a trial lecture on the given topic: "Safety of MRI contrast agents."

In the 80's Bökstedt introduced THH(A), the Topological Hochschild homology of a ring A, and a trace map from algebraic K-theory of A to THH(A). This trace map, along with the circle action on THH, have since been used extensively to make calculations of algebraic K-theory. When the ring A has an anti-involution Hesselholt and Madsen have promoted the spectrum K(A) to a genuine Z/2-spectrum whose fixed points is the K-theory of Hermitian forms over A. They also introduced Real topological Hochschild homology THR(A), which is a genuine equivariant refinement of THH, and Dotto constructed an equivariant refinement of Bökstedt's trace map. I will report on recent joint work with Dotto, Patchkoria and Reeh on models for the spectrum THR(A) and calculations of its RO(Z/2)-graded homotopy groups. 

Sunniva Siem, Fysisk institutt, UiO

Adam Sørensen (Oslo) will give a talk with title: Overlapping qubits

Abstract: I will discuss the paper "Overlapping Qubits" by Chao, Reichardt, Sutherland, and Vidick (arXiv:1701.01062 - category: Quantum Physics!). Qubits are the bits of quantum computing. In the paper the authors take the point of view that a qubit mathematically is described by a pair of anticommuting reflections on a finite dimensional Hilbert space. Two qubits are independent if their defining operators commute. The central point of the paper is that when performing observations we should not expect two qubits to be exactly independent, rather we should expect them to be almost independent, i.e. the norms of the commutators should be small. This naturally leads to questions about almost commuting matrices, which is why I care. I will attempt to explain how questions of almost commuting matrices come up, and how the physicists answer them.  

Late Lunch Talk by Melissah Rowe, CEES

All interested are invited to an open seminar on Noble gases in the environment, applications for CO2 storage and groundwater monitoring, Tuesday March 14. The seminar is arranged by the ICO2P project at Dept of Geosciences. Speakers at the seminar are: Anja Sundal, Matthias S. Brennwald, Per Aagaard, Philip Ringrose, and Rolf Kipfer.

I første del av prøveforelesningen vil Cecilie Morland forelese over temaet "Teratogenese og legemidler".

Yi Jing Phua, Condensed Matter Physics (CONDPHYS), Department of Physics, UiO 

Erik Hobbie, Terrestrial Ecology, University of New Hamphsire

Welcome to GeoHyd Lunch Seminar Friday March 10th @ 12:15 in Aud 2 in the Geology building.

Lise Christensen, Associate Professor DARK cosmology Centre, Niels Bohr Institute, University of Copenhagen

Large Eddy Simulation of the interaction of water waves with turbulent air flow

Youssef Ouknine (Cadi Ayyad University, Marrakesh, Morocco) gives a lecture with the title: Optimal stopping with f-expectations: the irregular case.

Khalifa Essebaly (Cadi Ayyad University, Marrakesh, Morocco) gives a lecture with the title: Optimal rates for parameter estimation of stationary Gaussian processes.

By lecturer, Professor Torbjörn Ekman from the Department of Electronic Systems, NTNU. Welcome!

The evolution of reaction norms such as thermal performance is tightly linked to ecological processes, and eco-evolutionary models can provide important insights especially in varying environments.

This thursday, at the Speciation Journal Club, we will discuss a paper on  Transitions between phases of genomic differentiation during stick-insect speciation, by Riesch et al. 2017 (Nature Ecology & Evolution)

By Jeffrey Hutchings from Dept. of Biology, Dalhousie University, Canada & CEES

Aritra Gupta, HCRI, Allahabad

The most widely studied scenario in dark matter phenomenology is the thermal WIMP (Weakly Interacting Massive Particle) scenario. Inspite of numerous efforts to detect WIMP, till now we have no direct evidence for it. A possible explanation for this non-observation of dark matter could be because of its very feeble interaction strength and hence, failing to thermalise with the rest of the cosmic soup. In other words, the dark matter might be of non-thermal origin where the relic density is obtained by the so called freeze-in mechanism. Furthermore, if this non-thermal dark matter is itself produced substantially from the decay of another non-thermal mother particle, then their distribution function may differ in both size and shape from the usual equilibrium distribution. In this talk I will discuss about such a non-thermal (fermionic) dark matter scenario in the light of a new type of U(1)B-L model. The model is interesting, since, besides being anomaly free, it can give rise to neutrino mass by Type II see-saw mechanism. Moreover, we will see, that it can accommodate a non-thermal fermionic dark matter as well. Starting from the collision terms, ...(cont. below)

(The slides will be available here)

Lan Zhang (University of Illinois at Chicago, Department of Finance) will give a seminar in the lunch area, 8th floor Niels Henrik Abels hus at 14:15. 

Upcoming seminar in meteorology and oceanography:

Speaker: Eric Chassignet, Professor and Director of the Center for Ocean-Atmospheric Prediction Studies, Florida State University