Agadjanov, Dimitri: Exploring exotic states with twisted boundary conditions. - Bonn, 2017. - Dissertation, Rheinische Friedrich-Wilhelms-Universität Bonn.
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author = {{Dimitri Agadjanov}},
title = {Exploring exotic states with twisted boundary conditions},
school = {Rheinische Friedrich-Wilhelms-Universität Bonn},
year = 2017,
month = oct,

note = {The goal of this thesis is to develop methods to study the nature and properties of exotic hadrons from lattice simulations. The main focus lies in the application of twisted boundary conditions. The thesis consists of a general introduction and the collection of three papers, represented respectively in three chapters. The introduction of the thesis reviews the theoretical background, which is further used in the rest of the thesis. Further, in Chapter 1, implementing partially twisted boundary conditions in the scalar sector of lattice QCD is studied. In Chapter 2, we develop a method to study the content of the exotic hadrons by determining the wave function renormalization constant from lattice simulations, exploiting the dependence of the spectrum on the twisted boundary conditions. Finally, Chapter 3 deals with a novel method to study the multi-channel scattering problem in a finite volume, which is relevant for exotic states. Its key idea is to extract the complex hadron-hadron optical potential, avoiding the difficulties, associated with the solution of the multi-channel Lüscher equation.},
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