HIP NEWS November 16th 2015

HIP NEWS November 16th 2015

Tuesday 17 November 2015 at 10.15 in A315
Georgios Itsios (Santiago de Compostela)
Exploring cold holographic matter

Abstract: In this talk we discuss aspects of cold matter using holographic techniques. Our holographic description is realized through a top-down approach, in which we consider D-brane intersections of different dimensionalities. We will analyze several properties of these systems such as the speed of first sound, the diffusion constant and the speed of zero sound. We also discuss the specific case of the D3-D5 intersection with a non-zero flux across the internal part of its worldvolume.

Wednesday 18 November at 14:15 in A315
Christian Gross (Helsinki)
Gauge fields as dark matter

Abstract: I discuss the scenario of a dark U(1) or SU(N) gauge group coupled to the Standard Model via the Higgs portal. It turns out that minimal CP-conserving hidden Higgs sectors entail stable massive gauge fields which fall into the WIMP category of dark matter candidates. For SU(N), N>2, DM consists of three components, two of which are degenerate in mass. In all of the cases, there are substantial regions of parameter space where the direct and indirect detection as well as relic abundance constraints are satisfied.

Thursday 19 November 2015 at 10.15 in A315
Joonas Nättilä (Tuorla, Turku)
Equation of state for the dense matter inside neutron stars using thermonuclear explosions

Abstract: In my talk I will describe how observations of thermonuclear explosions on top of neutron stars ends up constraining the size of these ultra-compact objects. I will also show how we can model these explosions and how the atmosphere of the star modifies the emerging spectrum. As it turns out, good understanding of the physics behind these powerful bursts is also crucial for accurate mass and radius measurements. From the size measurements we can then obtain a parametrized equation of state of the cold dense matter by using Bayesian methods. This allows us to set limits on some nuclear parameters and to constrain an empirical pressure-density relation for the dense neutron matter.

Fulbright-Technology Industries of Finland Grant
More information about Fulbright-Technology Industries of Finland Grants (in Finnish): www.fulbright.fi/fi/stipendit-tohtorintutkinnon-jalkeiseen-tutkimukseen-ja-luennointiin/fulbright-technology-industries. Application deadline is December 14, 2015, 10:00 a.m.

Update your information in Tuhat
Permanently employed teaching and research staff are requested to update their information in the Tuhat database by 11 January 2016. https://flamma.helsinki.fi/en/notifications/update-your-information-in-tuhat

The Strategic Research Council (SRC) at the Academy of Finland : Apply for strategic research funding
The SRC’s call will be implemented in two stages. The first stage, for letters of intent, will be open in the Academy of Finland’s online services between 5 November and 9 December 2015.
In addition, the SRC will open a supplementary call within the 2015 programme A Climate-Neutral and Resource-Scarce Finland. https://flamma.helsinki.fi/en/notifications/apply-for-strategic-research-funding

K.C. Chan 29.11. – 6.12. (FM)
J. Ghiglieri 23.11. – 27.11. (AV)
G. Itsios 16.11. – 23.11. (NJ)

Posted in Weekly Newsflash.