Seminarium Zakładu Fizyki Teoretycznej

After a general introduction to QCD spin physics and nucleon spin decomposition, I will talk about two recent developments in this field. First, I discuss a novel connection between the nucleon electric dipole moment (EDM) and polarized Deep Inelastic Scattering (DIS). I argue that the matrix element of the CP-violating Weinberg operator is related to certain higher-order corrections in polarized DIS. Second, I discuss the small-x behavior of polarized parton distribution functions and orbital angular momentum distributions within the framework of double logarithmic resummation in QCD.

We review the de Broglie--Bohm quantum theory, an alternative description of quantum phenomena in accordance with all the quantum experiments already performed. It is a dynamical theory about objectively real trajectories in the configuration space of the physical system under investigation, where probabilities of outcomes are not essential. Hence, it can be applied to single closed systems, being suitable for Cosmology. The emerging cosmological models are usually free of singularities, with a bounce connecting a contracting era with an expanding phase, which we are now observing.

New physics not far above the TeV scale should leave a pattern of virtual effects in observables at lower energies. What do these effects tell us about the structure of a UV theory? We will address this question by considering the Standard Model as an Effective Field Theory, which allows us to relate physics at different energy scales through the renormalization group. I will show how to deduce possible features of a UV theory by combining top-quark observables at the LHC with bottom observables at the flavor factories.
 

Best regards,

In my talk I present a review of recent developments in the area of quantum simulators (QS) of lattice gauge theories. I will start with explaining what quantum simulators are, and will discuss various platform for and paradigmatic examples of QS. I will spend some time to explain how can one realize artificial static gauge fields in systems of trapped ultracold atoms, atoms in optical lattices and in synthetic dimensions. Finally, I will focus on  quantum simulators of lattice gauge theories and dynamical gauge fields, and present four examples: