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Aktuelle saker

  • maria-v-boe660 —Morskipet hentet meg hjem 27. jan. 2017 15:32

    Hun vil gjøre fysikkundervisning bedre og få flere til å bli glad i fysikk.

  • lasse-clausen660 Akademia i siste liten 18. jan. 2017 08:49

    Lasse Clausen var i ferd med å ta farvel med akademia da ryktene om en jobb i Norge dukket opp. Nå har han nettopp dratt i land et prosjekt ved Troll-stasjonen i Arktis, og fast jobb ved UiO.

  • cobra-gaute-anders1000 Mer penger til fysikk i hjernen 4. des. 2015 15:21

    Hvordan kan vi vite hva som skjer i hjernen når vi gjør målinger utenpå hodet?

Arrangementer

  • Brain alterations following normal ageing and neurodegenerative diseases: New insights using advanced MR techniques 26. apr. 2017 12:15

    Atle Bjørnerud, Oslo Universitetssykehus og Fysisk institutt, UiO

  • Fermi liquids and fractional statistics in one dimension 26. apr. 2017 13:05

    Jon Magne Leinaas, FI

    I will discuss how one-dimensional interacting fermion systems, which in the low energy approximation are described by Luttinger liquid theory, can be reformulated as systems of weakly interacting particles with fractional charge and statistics. The approach is to use Landau's phenomenological approach to Fermi liquid theory, with quasiparticles interpreted as adiabatically dressed fermions. In an earlier publication the local charge carried by these excitations has been shown to be a fraction of the fermion charge. I will here focus on the statistics of the quasiparticles and show that by a change of momentum variables the Landau parameters of the generalized Fermi fluid can be transformed to zero. This change in interaction is compensated by a change of the Pauli exclusion, which is consistent with the interpretation of the quasiparticles as satisfying generalized exclusion statistics.

    (The slides will be available here)

  • torunn Semiconductor research at the University of Oslo and a sneak peek into the nanoscale world of silicon 28. apr. 2017 15:15

    By Torunn Kjeldstad, from Light and Electricity from Novel Semiconductors (LENS), UiO

  • Interndosimetri i ny radionuklideterapi - medisin vi kan se! 24. mai 2017 12:15

    Johan Blakkisrud, Avdeling for diagnostisk fysikk, Rikshospitalet, Oslo Universitetssykehus

  • Single-photon optomechanics 24. mai 2017 13:05

    Kjetil Børkje, University College of Southeast Norway

    I will discuss ongoing work on cavity optomechanical systems, where electromagnetic radiation in a cavity interacts with the motion of nano- or microscale objects via radiation pressure. Such interactions have been exploited in order to bring mechanical systems into the quantum regime, but also in order to manipulate light or microwave radiation. Due to a small coupling constant, this has so far involved driving the cavity with a large number of photons. In this talk, I will discuss how single photons can be controlled or detected using optomechanical interactions. In particular, I will explore whether this is possible even if the system is not in the so-called strong coupling regime.

    (The slides will be available here)