DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS 2026

• • Thursday 21 May 2026 at 10:15 in A315 and using Zoom: Michal Heller (Ghent)
    New vistas in quantum information aspects of gravity and quantum fields
    Abstract: I will discuss two new notions in the context of quantum information processing perspective on high energy physics, temporal entanglement and Krylov complexity, from the point of view of their dual gravitational interpretation. Based on 2412.17785 with Papalini and Schuhmann and 2408.15752 and 2507.17847 with Ori and Serantes.
  • Tuesday 26 May 2026 at 10:15 in A315 and using Zoom: Mika Nurmela (Helsinki)
    Towards the full four-loop pressure of cold and dense quark matter
    Abstract: The physical nature of the matter within ultradense cores of neutron stars is closely linked to the equation of state — the relationship between the pressure and energy density of cold and dense quantum chromodynamic matter. Over the past decade, significant progress has been achieved in the calculation of the subsequent correction to the pressure, with only a handful of integrals currently remaining to be evaluated. In this talk, I will address the challenges encountered in the evaluation of the naive hard mode contribution to the pressure and present the necessary tools for evaluating the corresponding integrals. Additionally, I will provide a brief overview of the remaining hurdles that need to be overcome to achieve the full correction to the pressure.
  • Thursday 6 June 2026 at 10:15 in A315 and using Zoom: Andrea Olzi (Paris)
    TBA
    Abstract: TBA
  • Thursday 11 June 2026 at 14:15 in CK112 (Exactum) and using Zoom: Chris Quigg (Fermilab)  ; Note unusual time and place!
    Perspectives and Questions: Toward an Expansive Agenda for Particle Physics
    Abstract: Global celebration greeted the 2012 discovery at CERN’s Large Hadron Collider of a particle that matches the textbook description of the Higgs boson. That achievement validated a remarkable chain of theoretical reasoning that combined the prescriptive notion of electroweak gauge symmetry with a simple, but ad hoc, embodiment of spontaneous symmetry breaking. It was enabled by generational triumphs of accelerator art and experimental technique, and by human resourcefulness and collaboration on a global scale, all sustained by the enlightened support of many governments and institutions.
    Some imagine that, once the keystone of the standard model of particle physics has been set, our subject is over. Others worry that we may be at an impasse because no comparable wonders have appeared, leaving us without well-defined clues to a more complete paradigm. I do not share the self-assurance that prompts the first group to speak for nature, for the essence of science is doubt, and curiosity, and humility. Nor am I so easily discouraged: our description of nature is incomplete, and we have so much more to learn! This seminar will survey many questions that, taken together, constitute an inspiring array of opportunities to enhance our understanding of the physical world.
  • Tuesday 11 August 2026 at 10:15 in A315 and using Zoom: Christophe Royon (CMS)
    TBA
    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],
Tushar Gupta  (tushar.gupta at helsinki fi) [cosmo seminar]

Other related seminars

Friday 10-12 seminar series in D114: Astrophysics seminar
Mathematical Physics Seminar and Workshop series Wed 14-16 in Exactum C123.
InstituteQ Events and Seminars