Seminarium Zakładu Fizyki Teoretycznej

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.
 

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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:

In the fundamental laws of physics, gauge fields mediate the interaction between charged particles. An example is quantum electrodynamics—the theory of electrons interacting with the electromagnetic field—based on U(1) gauge symmetry. Solving such gauge theories is in general a hard problem for classical computational techniques. While quantum computers suggest a way forward, it is difficult to build large-scale digital quantum devices required for complex simulations. In this talk, I will present our work on analog quantum simulators of a U(1) gauge theory in one spatial dimension.

In my talk I will first briefly describe quantum gravity and characterize quantum gravity effects. Then I will argue that although it does not seem

feasible to observe quantum gravity effects directly, we could, or will be able in a near future, experimentally test deviations from the standard

physics of the quantum gravitational origin. I will present some effects of this kind and argue that quantum gravity phenomenology is possible

and can be fruitfully explored.