Department of Physics, Faculty of Science, University of Helsinki
Helsinki Institute of Physics
Astroparticle physics and cosmology are vital and growing
disciplines at the borderline of particle physics and astrophysics.
The subject of their study are the properties of the universe
and matter under extreme conditions.
This image by WMAP is from the NASA
LAMBDA archive
The weekly meetings of the group Thursdays at 11.15 A.M. in the HIP meeting
room
Personnel of the group and their fields of interest:
Kari Enqvist,
professor: Nature of the primordial perturbation, dark energy
(Academy of Finland). Kari Rummukainen,
professor: Quantum field theory, numerical simulations, cosmology. Keijo Kajantie,
professor emeritus: AdS/CFT duality, finite T field theory,
cosmological phase transitions. Esko Keski-Vakkuri,
lecturer: String theory and cosmology. Hannu Kurki-Suonio,
lecturer: Phase transitions in the early universe; Planck Surveyor Mission. Syksy Räsänen,
lecturer: Cosmology: inhomogeneities in cosmology, light propagation,
cosmic microwave background. Elina Keihänen,
Academy research fellow: Primordial nucleosynthesis, Planck Surveyor Mission. Shaun Hotchkiss,
postdoc: Cosmology, inflation and large scale structure. Marco Panero,
postdoc: Quantum field theory, numerical simulations.
Daniel Figueroa,
postdoc: Gravitational Waves from Early Universe,
Primordial Non-Gaussianity, (p)Reheating,
Inflation, Phase Transitions, Topological Defects. Rose Lerner,
postdoc: Theoretical cosmology, particularly inflation. Mikko Lavinto,
graduate student: Inhomogeneous cosmological models.
Ugo Bertello, undergraduate student: Inhomogeneous cosmological models.
Maria Mattsson, graduate student: Inhomogeneous cosmological models.
Tuukka Meriniemi,
graduate student: Cosmology, inflation and (p)reheating.
Stanislav Rusak,
graduate Student: Inflationary cosmology, isocurvature perturbations.
Matti Savelainen, graduate student: CMB analysis.
Anna-Stiina Suur-Uski, graduate student: CMB analysis.
Marianne Talvitie, graduate student: CMB data analysis
Kimmo Kiiveri, undergraduate student: CMB analysis. Valtteri Lindholm,
undergraduate student: CMB analysis.
Click here
for Theoretical Physics teaching personnel.
For an up-to-date info on cosmology or astroparticle conferences and workshops
see the forum "Conferences and meetings" at
CosmoCoffee.info.
Additional personnel:
The following persons, even though not formally affiliated with the Physics Department,
have strong links with the group and carry out research on the field of astroparticle
physics and cosmology.
Ugo Bertellon (2012):
"Cosmology in the Newtonian limit"
Stefano Magni (2011):
"Backreaction and the Covariant Formalism of General Relativity"
Stanislav Rusak (2011): "Scalar Perturbations in generalized multi-field inflation"
Anna-Stiina Sirviö (2010): "Analyzing the Cosmic Microwave Background Radiation"
Mikko Lavinto (2009): "WMAP 5 Year Data and its Implications for Single Field Inflation Models"
Juhani Koivisto (2008): "N-Field Inflation: Curvature and Entropy Perturbations"
Olli Sipilä (2008): "The Evolution of Linear Energy Density Perturbations in the Early Universe"
Mikko Parviainen (2008): "Cosmic microwave background map making"
Olli Taanila (2008):
"Neutrinos and thermal leptogenesis"
Maria Ronkainen (2007): "The role of cosmological coarse graining in the
dark energy problem"
Johannes Leppä (2007): "Rajoitukset antimaterian määrälle
maailmankaikkeudessa"
(Limitations on the Amount of Antimatter in the Universe, in Finnish)
Tony Liimatainen (2007): "Through a black ring to higher dimensions"
Vappu Reijonen (2006): "Phantom energy as a solution to the dark energy
problem"
Jan Julin (2005): "Pimeä energia Friedmannin yhtälön
modifikaationa"
(Dark Energy as a Modification of the Friedmann Equation, in Finnish)
Reijo Keskitalo (2005):
"The Effect of Matter and Baryon Densities on the Cosmic Microwave Background
Anisotropy"
Lotta Mether (2005): "The Randall-Sundrum Model"
Sami Nurmi (2005): "Ei-gaussiset perturbaatiot kurvatonimallissa"
(Non-Gaussian Perturbations in the Curvaton Model, in Finnish)
Touko Tahkokallio (2005): "Gravity and the Holographic Principle"
Toni Tuovinen (2005): "Inflaation jälkeinen kuumeneminen"
(Post Inflation Heating, in Finnish)
Teppo Mattsson (2004): "Gravitaation repulsiivisuudesta neli- ja
viisiulotteisissa malleissa" (Of the Repulsivity of Gravity in Four and
Five Dimensional Models, in Finnish)
Tiera Laitinen (2003), "Kosmisten magneettikenttien synty"
(The Origin of Cosmic Magnetic Fields, in Finnish)
Olli Ropponen (2003), "Kosmologiset parametrit"
(Cosmological Parameters, in Finnish)
Janne Högdahl (2002), "Looking at the Early Universe Through
Gravitational Lenses"
Tomi Koivisto (2002), "Quintessence - Scalar Field as the Cosmic Dark Energy"
Vesa Muhonen (2002), "Cosmic Microwave Background Polarization"
Antti Väihkönen (2002), "Cosmological Inflation and the
Linde-Mukhanov Model"
Tomi Salminen (2000), "Simulating Cosmic Structure Formation"
Markku Suominen (2000), "Kosmologisen vakion vaikutus FRW-malleihin"
(The Effect of a Cosmological Constant on the FRW Models, in Finnish)
Jussi Väliviita (1999),
"An analytic approach to cosmic microwave background radiation"