Zobrazeno 1 - 10
of 141
pro vyhledávání: '"Raggio, G. A."'
We consider the two-spin subsystem entanglement for eigenstates of the Hamiltonian \[ H= \sum_{1\leq j< k \leq N} (\frac{1}{r_{j,k}})^{\alpha} {\mathbf \sigma}_j\cdot {\mathbf \sigma}_k \] for a ring of $N$ spins 1/2 with asssociated spin vector oper
Externí odkaz:
http://arxiv.org/abs/0709.2357
Autor:
Clement, M. E. Gabach, Raggio, G. A.
For two qubits and for general bipartite quantum systems, we give a simple spectral condition in terms of the ordered eigenvalues of the density matrix which guarantees that the corresponding state is separable.
Comment: 5 pages Revised 31 May 2
Comment: 5 pages Revised 31 May 2
Externí odkaz:
http://arxiv.org/abs/quant-ph/0604123
Autor:
Osenda, O., Raggio, G. A.
We revisist the issue of entanglement of thermal equilibrium states in composite quantum systems. The possible scenarios are exemplified in bipartite qubit/qubit and qubit/qutrit systems.
Comment: 4 figures
Comment: 4 figures
Externí odkaz:
http://arxiv.org/abs/quant-ph/0507013
Autor:
Raggio, G. A.
For any unitarily invariant convex function F on the states of a composite quantum system which isolates the trace there is a critical constant C such that F(w)<= C for a state w implies that w is not entangled; and for any possible D > C there are e
Externí odkaz:
http://arxiv.org/abs/quant-ph/0505044
Autor:
Nagel, O. A., Raggio, G. A.
We propose a measure of state entanglement for states of the tensor-product of C*-algebras.
Comment: The additivity claim made in the previous version is withdrawn
Comment: The additivity claim made in the previous version is withdrawn
Externí odkaz:
http://arxiv.org/abs/quant-ph/0306024
Autor:
Raggio, G. A.
We make some simple observations on basic issues pertaining to thermostatistical formalisms.
Comment: 6 pages, 0 figures
Comment: 6 pages, 0 figures
Externí odkaz:
http://arxiv.org/abs/cond-mat/9909161
Autor:
Raggio, G. A.
We show that the latest thermostatistical formalism based on the Havrda & Charvat-Dar\'oczy-Tsallis entropy $S_q [ \rho ] = (q-1)^{-1}(1- tr (\rho^q))$ proposed by Tsallis, Mendes and Plastino is {\em equivalent} to the first one proposed by Tsallis
Externí odkaz:
http://arxiv.org/abs/cond-mat/9908207
Publikováno v:
In Journal of Dairy Science December 2009 92(12):6068-6082
Publikováno v:
In Annals of Oncology December 2007 18(12):1995-1999
Autor:
Raggio, G., Lobley, G.E., Berthiaume, R., Pellerin, D., Allard, G., Dubreuil, P., Lapierre, H.
Publikováno v:
In Journal of Dairy Science January 2007 90(1):352-359