Entanglement dynamics under decoherence: from qubits to qudits A. R.R. Carvalho, F. Mintert, S. Palzer and A. Buchleitner Eur. Phys. J. D, 41 2 (2007) 425-432 Published online: 15 November 2006 DOI: 10.1140/epjd/e2006-00246-4