HIP NEWS May 15th 2017

HIP NEWS May 15th 2017
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HIP ANNUAL REPORT
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The HIP annual report 2016 is now available on the HIP web pages http://www.hip.fi/?page_id=1320

DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS
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Tuesday 16 May 2017 at 10.15 in A315
Mauri Valtonen (Turku)
Post-Newtonian components of a gravitational wave

Abstract: The direct detection of a gravitational wave from GW150914 in September 2015 opens up a new window to the study of the universe. Even though the effects of gravitational waves in astronomical systems have been indirectly observed since 1974, this was the first confirmation of their existence. I will describe the history of the method leading to the detection, and the properties of the merging binary black hole system in GW150914. One of the key issues in the analysis of gravitational wave events is the theoretical treatment of the Post-Newtonian components of the wave. Until now the lowest order Newtonian component has been enough, but in the analysis of black hole mergers one has take into account higher orders. I will discuss the situation in the binary black hole system OJ287 and show that it is necessary to include tails (scattering of the waves from themselves) while the memories of past waves can be neglected. Truncating the series at the first post-Newtonian order (as is often done), leads to a serious error.

DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS
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Tuesday 16 May 2017 at 14.15 in A315
Alexander Rothkopf (Heidelberg)
Improved real-time dynamics of thermal fields from lattice simulations

Abstract: The determination of real-time information from lattice simulations at finite temperature is a central challenge in our quest to nonperturbatively connect first principles theory to experimental measurements. In the context of relativistic heavy-ion collisions the shear viscosity of the quark-gluon plasma is one pertinent example, which with standard simulation methods is exponentially hard to obtain. In this talk I will discuss the challenges of computing real-time quantities via the extraction of spectral functions from standard lattice simulations and introduce a recent proposal of how to possibly circumvent these. In it, thermal fields are simulated on a lattice in imaginary frequency space, which allows one to resolve correlation functions in between the conventional Matsubara frequencies. Results from a (0+1)d proof-of-principles simulation are presented, which show that an exponential improvement in the reconstruction of spectral features may be achieved (arXiv:1610.09531).

WORKSHOPS AND CONFERENCES
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RECFA (https://ecfa.web.cern.ch/) will visit Finland this week, 19-20 May, 2017. You are encouraged to attend the open session on Friday, 19 May, at the University of Helsinki Main Building, Small Hall, address Fabianinkatu 33, and follow the interesting presentations: https://indico.cern.ch/event/626143/timetable/#20170519.detailed.

TEKES NEW BUSINESS FROM RESEACH IDEAS FUNDING CALL 2/2017
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The funding is targeted to research organisations to commercialise their research results. For more information, see https://www.tekes.fi/en/funding/research_organisations/new-business-from-research-ideas/

The deadline for the call is 14 September 2017.

The deadline for the University of Helsinki internal support is 16 June 2017. For more information, see https://flamma.helsinki.fi/en/TEKES/HY306815

FUNDING OPPORTUNITIES
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Osk. Huttusen säätiön apurahat haettavissa 15.5.-15.6.2017. Apurahahakemus tehdään lomakkeelle, jonka saa säätiön kotisivulta www.oskhuttusensaatio.net tai asiamieheltä Timo Åvistilta, puh. 02941 22102. https://flamma.helsinki.fi/fi/HY363943

The Jane and Aatos Erkko Foundation. Applications are submitted using the electronic application system. http://jaes.fi/en/applying-for-donation/

Finnish Academy of Science and Letters. Mathematics Fund. There are no fixed dates for applying to the Mathematics Fund. Applications should be sent to the chairman of the trustees, Olli Martio (olli.martio [at] helsinki.fi).

The Jenny and Antti Wihuri Foundation. Grant application period is 7.5.–31.5.2017. Sign in to the online application system during the application period and fill in the application form. http://wihurinrahasto.fi/?lang=en