Abstract: We live in a golden age for the study of non-perturbative aspects of field theories. Developments in effective field theory, gauge-gravity dualities, and lattice field theories make it possible to study with unprecedented accuracy models of new physics with strongly coupled origin, with relevant examples taken from the literature on composite Higgs models. We discuss in particular...
Abstract: I will consider a class of theories where the gauge group K is the maximal compact subgroup of a non-compact simple group G (e.g., K=U(1) and G=SU(1,1) ). The matter fields are fermions in a unitary representation of G which decomposes to an infinite sum of irreps of K. The Zeta-function method regularizes the infinite sum over the fermions in loop diagrams. Some of these gauge...
We present the basics and the current status of dynamical ensemble
generation and measurements with Domain Wall Fermions.
Experiences in controlling the extent of the 5th dimension and the
residual symmetry breaking is discussed.
Abstract: Composite Higgs models have been proposed and classified based on a confining gauge interactions and two species of fermions. The spectrum of such theories can be studied on the Lattice. I will discuss the phenomenology of various types of resonances which are always present in such models. Many states feature exotic quantum numbers and interesting final states that can be searched...
Abstract: Many underlying models of a composite Higgs predict additional composite scalar resonances which can be searched for at the LHC. In this talk we present a survey of experimental constraints on pair-produced scalar resonances with decay channels motivated by underlying models of a composite Higgs. In the second part, we focus on a particular signature -- pair-produced doubly-charged...
Abstract: Spectroscopy is a fundamental matter in lattice gauge theories. In this talk, I will inspect a new technique used to perform finite volume spectroscopy, by fitting spectral densities. This will be shown, giving an overview of how one provides an estimate for spectral densities, and how to fit them. This will be done focusing on a mixed representation (fundamental and two-index...
