Theory Division

We consider a minimal extension of the Standard Model with a hidden sector charged under a dark local U(1)’ gauge group, accounting simultaneously for light neutrino masses and the observed Dark Matter relic abundance. The model contains two copies of right-handed neutrinos which give rise to light neutrino-masses via an extended seesaw mechanism. The presence... More »

Motivated by the prospect of discovering stochastic gravitational wave backgrounds, this talk will focus on the role(s) that non-minimally coupled scalar fields can play in the evolution of the early Universe. In the first part I will present a model for gravitational reheating involving a scalar field directly coupled to the Ricci curvature scalar. Crucial... More »

Quantum Computing holds the promise of enabling calculations of the real-time evolution of quantum systems, with a wide range of applications in nuclear and particle physics. In particular, a fault-tolerant Quantum Computer would allow calculations of nuclear dynamics beyond the reach of classical computing. In this talk, I will discuss the problem of calculating real-time... More »

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 »

TBD