Quantum many-body systems exhibit a wealth of phenomena, but are challenging to simulate numerically due to the exponential growth of the Hilbert space with system size. In this thesis, we study various one-dimensional systems with tensor-network techniques to overcome these limitations. First we investigate the entanglement dynamics of many-body localized systems coupled to a bath. Second, we describe entanglement properties of low-energy excitations in equilibrium. Third we study the quasiparticles in a spin ladder, and show the emergence of the sine-Gordon field theory.
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Quantum many-body systems exhibit a wealth of phenomena, but are challenging to simulate numerically due to the exponential growth of the Hilbert space with system size. In this thesis, we study various one-dimensional systems with tensor-network techniques to overcome these limitations. First we investigate the entanglement dynamics of many-body localized systems coupled to a bath. Second, we describe entanglement properties of low-energy excitations in equilibrium. Third we study the quasipart...
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