Dresden 2011 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 62: CE: Low-dimensional Systems - Models 2

TT 62.1: Talk

Friday, March 18, 2011, 10:30–10:45, HSZ 105

Entanglement Hamiltonian of quantum spin systems — •Vincenzo Alba, Masud Haque, and Andreas Lauchli — Max Planck Institute for the Physics of Complex Systems, Dresden, Germany

We investigate the `entanglement hamiltonian' of one-dimensional quantum spin systems, such as the XXZ chain and Heisenberg ladders. We analyze entanglement spectra obtained using exact diagonalization and DMRG. We provide physical insight into the main features of the spectra through perturbative calculations. In particular we show that the physics at the block boundaries plays a crucial role in determining the form of the entanglement spectrum and hence of the entanglement Hamiltonian.