Theory Division

Since axions couple extremely weakly to regular matter, it makes them challenging to probe in the laboratory. However, axions should be produced in the dense environments of compact stars. Stellar axion emission provides an additional cooling channel that leads to well-known constraints on the axion’s couplings to matter. These constraints are indirect, and although compact... More »

I will give an overview of our current picture of the physical mechanisms that are at play in high-energy collisions, spanning both perturbative and non-perturbative phenomena. I will review the current state of the art of detailed numerical models of these processes, embodied by Monte Carlo event generators, and explain why I believe we are... More »

The precision of LHC data has reached a level that NNLO QCD predictions are required for most of the relevant processes. Despite the enormous progress in higher-order computations, that now reaches even N3LO QCD for some benchmark processes, only a few of the NNLO calculations are really available to the community. We review the recent... More »

The Short-time approximation has been developed in the context of quantum Monte Carlo calculations to calculate nuclear responses in nuclei with A≥12. This algorithm exploits a factorization scheme to consistently retain two-body physics, both in two-body currents and correlations. In this talk, I will present developments in the calculations of response densities in 12C, as... More »

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