Login

Quantum Fields – from Fundamental Concepts to Phenomenological Questions

26–28 Sept 2018
Mainz Institute for Theoretical Physics, Johannes Gutenberg University
Europe/Berlin timezone

Session

Characterizing Quantum Spacetime

26 Sept 2018, 11:00
02.430 (Mainz Institute for Theoretical Physics, Johannes Gutenberg University)

02.430

Mainz Institute for Theoretical Physics, Johannes Gutenberg University

Staudingerweg 9 / 2nd floor, 55128 Mainz

Presentation materials

There are no materials yet.

  1. 38. Anti-Newtonian Expansions and the Functional Renormalization Group
    Dr Max Niedermaier (Department of Physics and Astronomy, University of Pittsburgh)
    26/09/2018, 11:00
    In QFT an Anti-Newtonian expansion perturbs around decoupled copies of a self-interacting quantum mechanical system, with subsequent coupling induced by spatial hopping terms. Such an expansion is developed for the effective action of 1+d dimensional scalar QFTs. A Functional Renormalization Group in the hopping parameter leads to a recursion for which an exact solution in terms of...
    Go to contribution page
  2. 39. The problem of vacuum in quantum gravity: a view from Asymptotic Safety
    Dr Alfio Maurizio Bonanno (INAF Catania - INFN)
    26/09/2018, 11:45
    We use the non-Gaussian fixed points (NGFPs) appearing in the renormalization group flow of gravity and gravity-matter systems to construct models of NGFP-driven inflation via a renormalization group improvement scheme. The cosmological predictions of these models depend sensitively on the characteristic properties of the NGFPs, including their position and stability coefficients, which in...
    Go to contribution page
  3. 25. Quantum gravity and the search for observables
    Prof. Renate Loll
    27/09/2018, 09:00
  4. 26. Geometric operators in Asymptotic Safety
    Dr Carlo Pagani
    27/09/2018, 09:45
    We consider the scaling properties of geometric operators such as parametrized curves, surfaces, and volumes in the context of the Asymptotic Safety scenario for Quantum Gravity. We also discuss the scaling properties of geodesics and their possible role in the Asymptotic Safety scenario.
    Go to contribution page
  5. 28. Is Lorentz symmetry relevant?
    Dr Benjamin Knorr (Radboud University)
    27/09/2018, 11:00
    Among the several approaches to quantise gravity, one particular is Horava-Lifshitz gravity, claiming that Lorentz symmetry is broken microscopically, which might allow a perturbative renormalisation of gravity. For this scenario to be related to the real world, Lorentz symmetry must be restored on large scales to be consistent with countless experiments. I propose a new foliated...
    Go to contribution page
  6. 29. Towards a predictive ultraviolet completion for quantum gravity and the Standard Model
    Dr Astrid Eichhorn
    27/09/2018, 11:45
    I will discuss recent progress towards an ultraviolet completion of the Standard Model induced by asymptotically safe quantum fluctuations of gravity. In particular, I will focus on a scenario to retrodict the top and bottom mass and the Abelian gauge coupling from asymptotic safety. In an approximation, antiscreening quantum-gravity fluctuations induce an asymptotically safe fixed point for...
    Go to contribution page
Building timetable...