HIP seminar room A315

    • Tuesday 1 October 2019 at 10.15 in A315: Graham White (Triumf, Canada)
      Electroweak baryogenesis, experimental status, progress and extensions
      Abstract: Electroweak baryogenesis is a minimal and compelling explanation for why we are here. It also has the advantage of being testable due to its connection to the weak scale. I outline these experimental tests and highlight theoretical uncertainties that blur the conversation between theory and experiment. I then present the status of some of the simplest baryogenesis models before show extensions to the paradigm itself.
    • Thursday 10 October 2019 at 10.15 in A315: Paolo Benincasa (NBI, Copenhagen)
      Cosmology without time and the search of fundamental rules for cosmology
      Abstract: The principles of Lorentz invariance, locality and unitarity highly constrain the physics at accessible high energy: the type of interactions allowed as well as most of the theorems known in particle physics are instances of these principles. However, cosmology suggests that they may be just approximate: Lorentz invariance is broken at cosmological scales and the accelerated expansion of the universe seems to prevent a full-fledge definition of quantum mechanical observables. If our fundamental ideas in particle physics become somehow approximate in cosmology, what are the fundamental rules governing cosmological processes? In this talk I will report on a recent program which aims to address this question. Its strategy is to understand the properties of the cosmological observables, and in particular the so-called wavefuncton of the universe, directly in terms of its physical data without any reference to an explicit time evolution. We investigate the analytic properties of the wavefunction of the universe, how fundamental physics is encoded into it and how the flat-space physics reflects into it.
    • Thursday 17 October 2019 at 14.15 in Exactum B120: Bill Murray (Warwick, CERN) Note time and place!
      Probing the Origin and Future of the Universe
      Abstract: The Higgs boson discovered at LHC in 2012 demonstrates the existence of the BEH field, which arises from the unique equation of state of Higgs bosons. Taken literally, the equations say this field could cause the Universe to collapse at any moment. But modify the potential and it might explain the observed matter-antimatter asymmetry. The high-luminosity LHC is designed to increase the dataset by a factor ten, which should allow our first glimpses of the Higgs boson self-interaction, and could help us understand either of these facets.

      The upgrade work for the accelerator and the ATLAS detector will be outlined, along with a review of the physics programme focussing on the Higgs physics measurements and searches.

    • Thursday 24 October 2019 at 10.15 in A315: Juan F. Pedraza (London)
      Abstract: TBA
    • Tuesday 29 October 2019 at 10.15 in A315: Kristjan Kannike (Tartu)
      Abstract: TBA
    • Thursday 31 October 2019 at 10.15 in A315: Oscar Henriksson (Helsinki)
      Abstract: TBA
    • Thursday 7 November 2019 at 10.15 in A315: Valentina Puletti (Reykjavik)
      Abstract: TBA
    • Thursday 19 December 2019 at 10.15 in A315: Wilke van der Schee (CERN)
      Abstract: TBA

    Hopefully the up to 50 min + 10 min discussion long seminar/colloquium will be understandable to a wide audience.
    Contacts: Keijo Kajantie (keijo kajantie at helsinki fi) [ HIP seminar],
    Sofie Koksbang (sofie koksbang at helsinki fi) [cosmo seminar]

    For older seminars, click Seminar Archive on top of page

    Other related seminars

    Friday 10-12 seminar series in A315: Astrophysics seminar.
    Mathematical Physics Seminar and Workshop series Wed 14-16 in Exactum C123.