HIP NEWS May 29th 2017
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DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS
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Tuesday 30 May 2017 at 10.15 in A315
Tommaso Dorigo (Padova)
Controversial Phenomena in Collider Data and the Five Sigma Criterion in HEP
Abstract: Extraordinary claims require extraordinary evidence. The p < 0.000029% criterion used in HEP and astro-HEP does not appear adequate to cover all experimental situations. The seminar will start with a short history of anomalies found in HEP data and their resolution, and then focus on the statistical problem of defining a proper discovery level for new phenomena and on the non-trivial issues it entails.
DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS
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Tuesday 30 May 2017 at 14.15 in A315
Oscar Henriksson (Boulder)
Holographic studies of ABJM theory at finite density
Abstract: TBA
DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS
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Wednesday 31 May 2017 at 10.15 in A315
Marco Panero (Torino)
Non-equilibrium theorems from statistical mechanics and their applications in lattice QCD
Abstract: In statistical mechanics, Jarzynski’s and Crooks’ theorems relate the free-energy difference between an initial and a final statistical ensemble (both at equilibrium), to the distribution of work done on the system, when, starting from a configuration of the initial ensemble, it is driven towards the final one, through a sequence of transformations out of equilibrium. In this talk, I will discuss how these theorems can be applied in numerical simulations of QCD and QCD-like theories on a lattice.
COSMO-seminar
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Wednesday 31 May 2017 at 14.15 in A315
David Marsh (King’s College London)
Searching for the QCD Axion with Gravitational Microlensing.
Abstract: The phase transition responsible for axion dark matter production can create large amplitude isocurvature perturbations which collapse into dense objects known as axion miniclusters. We use microlensing data from the Subaru Hyper Suprime Cam to place constraints on the minicluster scenario. While miniclusters must form, the fraction of DM in miniclusters, fMC, is not known from theory. If fMC is of order unity, then axion direct detection is severely limited. We compute the microlensing event rate for miniclusters treating them as spatially extended objects with an extended mass function. For the QCD axion we find the bound fMC<0.083(ma/100μeV)^0.12, which represents the first observational constraint on fMC. We also constraint axion-like particles. I will discuss the many approximations in the theoretical calculation. However, I will argue that the ongoing renaissance in microlensing observations will render these irrelevant, and allow constraint and disocovery prospects for all possibilities. If accurate theoretical predictions for fMC can be made, then microlensing can be used to exclude, or discover, the QCD axion. I will briefly describe efforts by simualtion groups to make this prediction.
DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS
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Thursday 1 June 2017 at 10.15 in A315
Malak Khouchen (Brno)
Fundamental strings and D1 branes on deformed AdS3 x S3 background
Abstract: In this talk I describe results derived in two of my papers that were published in Phys. Review D and JHEP. In the first one we analyzed dynamics of fundamental string in deformed AdS3 x S3 space-time where we find giant magnon solutions for strings moving in this background which reproduces the celebrated Hofman-Maldacena dispersion relation in the limit when the deformation parameter goes to zero. In the second paper we analyzed D1-brane as a natural probe in the deformed AdS3 x S3 background with non-trivial Ramond-Ramond two form. We find static and time-dependent solutions of D1-brane equations of motion. We find that the behavior of these solutions crucially depends on the value of the deformation parameter and we discuss their relations to Anti-de Sitter D-branes found by K. Bachas.
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 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
