HIP NEWS March 7th 2016
DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS
Tuesday 8 March 2016 at 10.15 in A315
Jarno Rantaharju (Odense)
Lattice Model of Ideal Walking
Abstract: We present preliminary studies of the SU(2) gauged NJL model with 2 flavors of fermions in the adjoint representation. The gauge model is infrared conformal and an additional NJL-type four fermion interaction, at large coupling, induces a chirally broken phase. In the symmetric phase the four fermion interaction is expected to influence the dynamics of the infrared fixed point and there may be a second order transition to the chirally broken phase. We study chiral symmetry breaking and the mass anomalous dimension at the infrared fixed point using the mode number of the Dirac operator.
Wednesday 9 March 2016 at 14:15 in A315
Jonathan White (KEK, Japan)
Gravitational reheating after multi-field inflation
Abstract: It has recently been highlighted that details of the reheating process must be properly taken into account when constraining individual models of inflation with current high-precision CMB data, even in the case of single-field models. As inflation models with a non-minimal coupling between the gravity and inflaton sectors have recently attracted much attention, in this work we discuss reheating in this class of models, allowing for multiple inflaton fields. In such models, even in the absence of explicit interaction terms the inflaton sector can decay into matter as a result of its non-minimal coupling to gravity, thereby reheating the Universe gravitationally. Using the Bogoliubov approach we evaluate the gravitational decay rates of the inflaton sector, and analyse the reheating dynamics.
Tuesday 8 March and Wednesday 9 March: Upcoming events for international staff
Experiencing Finland 8.3.2016. Sign-up https://www.lyyti.fi/reg/Experiencing_Finland_Event_9136
Learn more about the Finnish culture and traditions, and meet colleagues from Aalto University and University of Helsinki.
Welcome to the University 9.3.2016. Sign up in http://www.helsinki.fi/trainingcalendar ( Staff Training Calendar HENKKA) or via https://elomake.helsinki.fi/lomakkeet/52707/lomake.html
The event is a part of the University of Helsinki orientation and all new staff members are encouraged to attend the session.
PhD Career Course will begin on 1 April
Time: 01.04.2016 – 29.04.2016
Career planning courses provide doctoral students with information about their employment options. The aim of the course is to develop PhD students’ career planning and job-seeking skills.
Sign up in http://www.helsinki.fi/trainingcalendar ( Staff Training Calendar HENKKA)
More information https://flamma.helsinki.fi/en/course-teaches-career-planning-to-doctoral-students
HIP ANNUAL REPORT
The second version of the Annual Report
(with language revision and updated links)
is available at www.helsinki.fi/~chelmine/annual15.
Please send possible (minor) corrections to Christina.Helminen[AT]helsinki.fi.
T. Alho 8.3. – 11.3. (KT)
P. Dendooven 24.2. – 6.4.
M. Hindmarsh 5.3. – 20.3. (KR)
C. Hoyos 6.3. – 9.3. (AV)
T. Jacques 12.3. – 16.3.;18.3. – 19.3 (FM)
M. Karciauskas 7.3. – 11.3.
S. Kawai 15.2. – 19.3. (FM)
J. Rantaharju 7.3. – 13.3. (KR)
D. Rodriguez 6.3. – 9.3. (AV)
J. White 8.3. – 15.3. (FM)