HIP NEWS May 19th 2014
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DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS
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Tuesday 20 May 2014 at 10.15 in A315
Biswarup Mukhopadhyaya (Allahabad)
The Higgs Boson as the Gateway to New Physics

Abstract: The recent experimental results on the Higgs boson, while coming as confirmation of the standard electroweak theory, also encounter us with the potential of indicating new physics at the fundamental level hidden therein. Some recent efforts in this direction will be discussed in this talk, both emphasizing a model-independent approach and in the context of a specific scenario.

Seminar: How to utilize new CSC computing resources in your research
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Monday, 26.05.2014, at 10 a.m.

Room Kvantti (Physicum C208), Kumpula campus, University of Helsinki, Gustaf Hällströmin katu 2a, Helsinki.

The 2nd phase of the CSC’s supercomputer (Sisu) and supercluster
(Taito) expected to be available for the researchers in Summer/Autumn
2014, are opening new possibilities for Finnish researchers – they will
increase the available computing capacity 5-fold.

Moreover, the activities of CSC have expanded during the last few years
from supercomputing to several new fields, like data management and cloud computing.

The CSC resources and services available to researchers will be presented, so that they can benefit from them from day 1. CSC will also collect feedback for configuring the systems according to the researchers’ needs.

Seminar program and Registration:
http://www.csc.fi/csc/kurssit/arkisto/gut14_Hy_Gen
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Visitors
———
M. Frank 18.5. – 31.5.
M. Hindmarsh 22.4. – 15.6. (KR)
N. Hopkins 28.4. – 23.5. (KR)
T. Koivisto 21.5. – 4.6.
B. Mukhopadhyaya 14.5. – 29.5. (KH)

HIP NEWS May 12th 2014
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DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS
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Tuesday 13 May 2014 at 10.15 in A315:
Marco Panero (Madrid)
Real-time dynamics from a Euclidean lattice: The physics of jet quenching in high-temperature QCD

Abstract: When the “fireball” of deconfined quark-gluon plasma (QGP) created in a heavy-ion collision expands and cools down, it produces hadronic jets with very striking features, including the suppression of large transverse momenta and of correlations between back-to-back particles. These effects are generically referred to as “jet quenching”, and give important information about the QGP: they indicate that, when a hard parton propagates through the deconfined medium, it undergoes multiple interactions with the plasma constituents, which lead to energy loss and momentum broadening. A theoretical study of this process is particularly difficult, because it involves both perturbative and non-perturbative physics. In addition, the dynamical, real-time nature of the phenomenon hinders a direct approach based on numerical simulation on a lattice. In this talk, however, it will be shown how one can tackle the problem, combining the lattice approach with ideas related to dimensional reduction in high-temperature QCD.

Wednesday 14 May 2014 at 10.15 in A315
Peter Dendooven (Groningen)
Proton therapy research at KVI-Center for Advanced Radiation Technology

Abstract: In cancer treatment, proton beam radiotherapy exploits the highly localized dose deposition of protons to minimize the dose delivered to healthy tissue surrounding a tumor. As a result, collateral damage to healthy tissue is less compared to photon radiotherapy: complications are reduced and the patient’s quality of life after treatment is improved. However, the more precise irradiation possible with protons means an irradiation with protons is less forgiving with respect to dose delivery errors such as proton range uncertainties, patient mispositioning and anatomical changes in the patient during the course of treatment. At KVI Center for Advanced Radiation Technology of the University of Groningen, we investigate several issues aiming at improved proton radiotherapy. Better knowledge of the patient in terms of proton stopping power by making use of dual-energy CT images and proton radiography is investigated. The clinical implementation of in-vivo dose delivery verification by imaging secondary radiation produced by the proton beam as part of quality assurance is being studied. Also, a better primary proton dose standard in terms of heat deposit in water is investigated. An overview of our proton-therapy related research, with some emphasis on in-vivo dose delivery verification will be presented.

COSMO-Seminar
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May 14 (Wed) at 14:15 in A315
David Mulryne (Queen Mary, London)
TBA

Visitors
———
P. Dendooven 12.5. – 14.5. (PE, JÄ)
M. Hindmarsh 22.4. – 15.6. (KR)
N. Hopkins 28.4. – 23.5. (KR)
B. Mukhopadhyaya 14.5. – 19.5. (KH)
D. Mulryne 16.4. – 16.5. (SN)
M. Panero 12.5. – 18.5. (AV)

HIP NEWS May 5th 2014
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DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS
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Tuesday 6 May 2014 in A315
Michal Heller (Amsterdam/Warsaw)
Gauge fields out of equilibrium – a holographic approach

Abstract: Ultra-relativistic heavy ion collision programs at RHIC and LHC probe the properties of matter under extreme conditions in which quarks and gluons are liberated from hadrons and form the quark-gluon plasma. I will discuss the progress on theoretical understanding of the formation of the quark-gluon plasma in heavy ion collisions, and related questions, coming from the first principle calculations in the models of strong interactions solvable using holography. This leads to a fascinating connection with gravitational physics, in particular black hole formation and dynamics, which I will discuss in detail.

Thursday 8 May 2014 at 10.15 in A315
Nick Evans (Southampton)
Dynamic AdS/QCD & the Conformal Window

Abstract: I introduce a simple holographic description of SU(Nc) gauge theory with Nf quark flavours. The dynamics of the gauge theory is input through the running of the anomalous dimension of the quark mass, gamma. The model predicts the on-set of chiral symmetry breaking when gamma=1. It then describes the hyperscaling relations in the conformal Window, a Miransky type phase transition, walking dynamics including a light sigma particle, and QCD-like behaviour at small Nf.

COSMO-Seminar
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May 7 (Wed) at 14:15 in A315
Vincent Vennin (IAP, Paris)
Testing Inflation after Planck and BICEP2

An unprecedented opportunity to constrain the inflationary theory is
provided by the current flow of high accuracy astrophysical data,
among which are the Cosmic Microwave Background measurements.
This is however a challenging project given the size of the inflationary landscape which contains hundreds of different scenarios.
In this talk I will show how the simplest models (the slow-roll single
field models with minimal kinetic terms) can be studied one by one in a systematic way. By means of Bayesian inference and model comparison methods, I will explain how these models can be ranked.
From the Bayesian evidences and complexities of ~ 200 inflationary models, I will discuss which models are excluded and which are the best models of inflation.
In particular, I will comment on the recent B-modes detection by the BICEP2 experiment and on its implication for inflation and inflationary models.

Visitors
———
P. Dendooven 12.5. – 14.5. (PE, JÄ)
N. Evans 7.5. – 9.5. (KT)
M. Heller 5.5. – 9.5. (KK)
M. Hindmarsh 22.4. – 15.6. (KR)
N. Hopkins 28.4. – 23.5. (KR)
D. Mulryne 16.4. – 16.5. (SN)
J. Serreau 4.5. – 6.5. (KR)

HIP NEWS April 28th 2014
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GUEST LECTURE
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Monday 28.4. 14.15 (A128, Chemicum)
Steven Hoekstra
Assistant Professor – Tenure track
Rijksuniversiteit Groningen, The Netherlands

“Precision tests of particle physics with cold molecules”
In recent years a number of experiments have demonstrated the sensitivity of
particular diatomic molecules to test particle physics theories, that allow for
example for a non-zero electric-dipole moment of the electron. In this talk I
will present why such molecules are ideal test-beds to test fundamental physics
theories, and how the methods we work on to create cold samples of molecules
might lead to the next generation of spectroscopic precision tests.

http://www.rug.nl/research/ifp/basiseenheid_experiment/coldmol/research-group-cold-molecules

Visitors
———
P. Dendooven 12.5. – 14.5. (PE, JÄ)
M. Hindmarsh 22.4. – 15.6. (KR)
N. Hopkins 28.4. – 23.5. (KR)
D. Mulryne 16.4. – 16.5. (SN)

HIP NEWS April 22nd 2014
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DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS
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Tuesday 22 April 2014 at 10.15 in A315
Risto Paatelainen (Jyväskylä)
Modeling the space-time evolution of ultrarelativistic heavy-ion collisions

Abstract: Understanding the different stages of ultrarelativistic heavy-ion collisions is essential in extracting the properties of the quark-gluon plasma. In this seminar talk I will review our perturbative QCD based model for the initial production of matter which is combined with a hydrodynamical framework for the subsequent space-time evolution. Finally, I will compare the results from the model with experimental data from RHIC and LHC based on which we can constrain the shear viscosity of the QCD matter.

Thursday 24 April 2014 at 10.15 in A315
Andreas Schmitt (Wien)
Sound modes and two-stream instability in a relativistic superfluid

Abstract: Relativistic superfluids are most likely present in the interior of compact stars, in nuclear matter and/or quark matter. I will discuss a field-theoretical approach to superfluidity and how it is connected to the usual two-fluid picture developed by Landau for superfluid helium. I will then show some applications of this approach, most notably the two sound modes for all temperatures and the so-called two-stream instability that is known from plasma physics and that may be relevant for compact star phenomenology.

Training for international staff
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24.4. Completing your tax return form
https://flamma.helsinki.fi/portal/home/sisalto?_nfpb=true&_pageLabel=pp_list&placeId=HY286456

Tax Administration.
http://vero.fi/en-US/Tax_Administration/Contact_information

CERN FINNISH OFFICE OPENING HOURS after Easter 2014:
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Tuesday 22.4.2014 office CLOSED.
Wednesday 23.4.2014 office OPEN, 8:30-12, 14-16.

NORMAL opening hours 24.4.2014 onwards.
Mon, Tues, Thur, Fri: 8:30-12, 14-16.
CLOSED on Wednesdays.

Are you looking for funding for your research?
————————————————
Research Funding Services of the University of Helsinki are providing UH
academic and research staff, research administrators and PhD students with

free access to a comprehensive international research funding database:
http://www.researchprofessional.com/login.html

Kumpula
13.5. at 14-16
Physicum, room D210
max 17 participants

For further information of the training please contact
Helena Meriluoto, tel. 191 24004.

Best regards,
Javier Caldentey, PhD, Docent
Senior Advisor
Research Funding Services
http://www.helsinki.fi/university/

Visitors
———
P. Dendooven 12.5. – 14.5. (PE, JÄ)
M. Hindmarsh 22.4. – 15.6. (KR)
N. Hopkins 28.4. – 23.5. (KR)
D. Mulryne 16.4. – 16.5. (SN)
R. Paatelainen 21.4. – 22.4. (AV)
A. Schmitt 23.4. – 26.4. (AV)

HIP NEWS April 14th 2014
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DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS
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Tuesday 15 April 2014 at 10.15 in A315
Tomas Lindén (HIP)
Compact fusion reactors

Fusion research is currently to a large extent focused on tokamak
(ITER) and inertial confinement (NIF) research. In addition to these
large international or national efforts there are private companies
performing fusion research using much smaller devices than ITER or
NIF. The attempt to achieve fusion energy production through
relatively small and compact devices compared to tokamaks decreases
the costs and building time of the reactors and this has allowed some
private companies to enter the field, like General Fusion and
Lawrenceville Plasma Physics. Some of these companies are trying to
demonstrate net energy production within the next few years. If they
are successful their next step is to attempt to commercialize their
technology. In this presentation an overview of compact fusion reactor
concepts is given.

Training for international staff
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24.4. Completing your tax return form
https://flamma.helsinki.fi/portal/home/sisalto?_nfpb=true&_pageLabel=pp_list&placeId=HY286456

Tax Administration.
http://vero.fi/en-US/Tax_Administration/Contact_information

Visitors
———
M. Hindmarsh 22.4. – 15.6. (KR)
N. Hopkins 28.4. – 23.5. (KR)
D. Mulryne 16.4. – 16.5. (SN)
R. Paatelainen 21.4. – 22.4. (AV)
A. Schmitt 23.4. – 26.4. (AV)

HIP NEWS April 7th 2014
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DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS
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Tuesday 8 April 2014 at 10.15 in A315
Maxime Gouzevitch (Universite Claude Bernard-Lyon I, France)
Standard Model Physics at the LHC

Abstract:
The LHC has collected a wealth of data, which strongly supports the Standard Model of particle physics, and has so far lent little evidence for new physics beyond it. We give an overview of the Standard Model Physics program and recent results at the CMS experiment, with highlights such as the measurement of alpha_s in the TeV scale.

Training for international staff
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24.4. Completing your tax return form
https://flamma.helsinki.fi/portal/home/sisalto?_nfpb=true&_pageLabel=pp_list&placeId=HY286456

Tax Administration.
http://vero.fi/en-US/Tax_Administration/Contact_information

Wondering where to publish your articles? Hear the tips of the publisher
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Time: April 10th, 2014 at 9 pm – 12
Further information:
https://flamma.helsinki.fi/portal/units/farmasia?_nfpb=true&_windowLabel=T18802259611379669329428&contentId=HY313996&lang=en&_pageLabel=P12000359611379669328883

HIP NEWS March 31st 2014
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J.V. Snellman prize
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University of Helsinki has awarded the 2014 J.V. Snellman Prize to Syksy Räsänen. The prize is recognition for achievements in science out-reach.

DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS
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Tuesday 1 April 2014 at 10.15 in A315
Venus Keus (Southampton)
Multi Higgs doublet models

Abstract: Multi Higgs-doublet models (NHDMs) are amongst the simplest extensions of the Standard Model, motivated for instance by Supersymmetric scenarios. I will discuss NHDMs with various symmetry groups which contain viable dark matter candidates, preserved by the remnant of the symmetry after EWSB. I will describe the dark matter phenomenology of these models and look into new Higgs decay channels offered by the extra doublets and their effect on the Standard Model Higgs couplings.

Wondering where to publish your articles? Hear the tips of the publisher
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Time: April 10th, 2014 at 9 pm – 12
Further information:
https://flamma.helsinki.fi/portal/units/farmasia?_nfpb=true&_windowLabel=T18802259611379669329428&contentId=HY313996&lang=en&_pageLabel=P12000359611379669328883

VISITORS
——–
V. Keus 28.3. – 1.4. (OL)
O. Taanila 31.3. – 4.4. (AV)

HIP NEWS March 24th 2014
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DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS
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Tuesday 25 March 2014 at 10.15 in A315
Mikko Möttönen (Aalto University)
Observation of Dirac monopoles in a synthetic magnetic field

Abstract: Magnetic monopoles–particles that behave as isolated north or south magnetic poles–have been the subject of speculation since the first detailed observations of magnetism several hundred years ago. Numerous theoretical investigations and hitherto unsuccessful experimental searches have followed Dirac’s 1931 development of a theory of monopoles consistent with both quantum mechanics and the gauge invariance of the electromagnetic field. The existence of even a single Dirac magnetic monopole would have far-reaching physical consequences, most famously explaining the quantization of electric charge. Although analogues of magnetic monopoles have been found in exotic spin ices and other systems there has been no direct experimental observation of Dirac monopoles within a medium described by a quantum field, such as superfluid helium-3. Here we demonstrate the controlled creation of Dirac monopoles in the synthetic magnetic field produced by a spinor Bose-Einstein condensate. Monopoles are identified, in both experiments and matching numerical simulations, at the termini of vortex lines within the condensate. By directly imaging such a vortex line, the presence of a monopole may be discerned from the experimental data alone. These real-space images provide conclusive and long-awaited experimental evidence of the existence of Dirac monopoles. Our result provides an unprecedented opportunity to observe and manipulate these quantum mechanical entities in a controlled environment.

Utrecht Network ?Academic English? Summer School
30.06.-11.07.2014 for posgraduate students
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https://flamma.helsinki.fi/portal/home/sisalto?_nfpb=true&_pageLabel=content_view&contentId=HY313468&placeId=HY034203

Wondering where to publish your articles? Hear the tips of the publisher
————————————————————————–
Time: April 10th, 2014 at 9 pm – 12
Further information:
https://flamma.helsinki.fi/portal/units/farmasia?_nfpb=true&_windowLabel=T18802259611379669329428&contentId=HY313996&lang=en&_pageLabel=P12000359611379669328883

VISITORS
——–
V. Keus 28.3. – 1.4. (OL)

HIP NEWS March 17th 2014
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DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS
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Tuesday 18 March 2014 at 10.15 in A315
Mohammad Mirkazemi (MPI, Garching)
Brightest X-ray clusters of galaxies in the CFHTLS wide fields: Red sequence finder, optical mass estimator, and stellar mass estimation

Abstract: Red sequence technique is one of the robust tool to identify galaxy clusters. This talk will introduce a new multi-color red sequence method. Using a spectroscopic sample of early-type galaxies and different stellar population models, I determined red sequence configuration parameters such as color model and a characteristic magnitude. I will show that our red sequence finder is a robust tool for determining the clusters redshift. Moreover, the correlation between z-band luminosity and total mass of clusters (derived from the X-ray luminosity) will be discussed. At the end, I will also present my recent work on the stellar mass estimation in CFHTLS and dependence of galaxy stellar mass function on the environment.

COSMO-Seminar
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Thu 20 March at 14:15 in Exactum B121 (NOTE exceptional time and place!)
Subir Sarkar (Oxford)
Title: TBA

Utrecht Network “Academic English” Summer School
30.06.-11.07.2014 for posgraduate students
——————————————-
https://flamma.helsinki.fi/portal/home/sisalto?_nfpb=true&_pageLabel=content_view&contentId=HY313468&placeId=HY034203

VISITORS
——–
S. Sarkar 20.3. – 21.3. (KE, SF)