Theory Division

Stimulated decays of axion dark matter, triggered by a source in the sky, could produce a photon flux along the continuation of the line of sight, pointing backward to the source. The strength of this so-called axion “echo” signal depends on the entire history of the source and could still be strong from sources that... More »

I will discuss the prospects for the detection of astrophysical neutrinos and dark matter at future large-scale direct dark matter detection experiments. Focusing on neutrino signals, I will emphasize how this detection will improve upon our understanding of solar, atmospheric, and supernova neutrinos in this regime. I will connect these measurements to on-going terrestrial experiments... More »

Finetuned and unnatural theories do not violate any laws of nature. However, I wouldn’t bet on them. This talk tries to explain why.

Dimensional Regularization is one of the most commonly employed schemes for practical calculations in perturbative quantum field theories. High precision tests in particle accelerators require theoretical constraints which in principle need complicated multiloop calculations, accessible in the framework of Dimensional Regularization. In this scheme, however, the γ5 Dirac matrix needs to remain purely 4-dimensional in... More »

Quantum Computing offers the promise of ab initio determination of some real-time observables for quantum field theories that are not typically ascessible in Lattice QCD simulations. Typical quantum computers leverage qubits, 2-state objects, for computations. However, Hilbert spaces for many physical systems do not cleanly map to a power of 2 and have unused states... More »

We established a paradigm where the (QCD) axion’s novel cosmological evolution, a rotation in the field space, gives rise to dark matter and the baryon asymmetry. The axion rotations also provide a natural origin for a kination era, where the total energy density is dominated by the kinetic term of the axion field, preceded by an... More »

In our current high precision era, quantum corrections due to the strong (QCD) sector are available to very high orders. However, effects from the electroweak (EW) sector are often either estimated or neglected. This talk considers how leading EW radiative corrections affect heavy particle physics in different energetic regimes. The discussion will cover various related... More »

Simulation of particle interactions with detector material, especially in the calorimeters are very time-consuming and resource intensive. In the upcoming LHC runs, these could provide a bottleneck that severely limits our analysis capabilities. In recent years, approaches based on deep generative models have provided a fresh alternative to “classical” fast simulation. In this talk, I... More »