| dc.creator | Plastino, Ángel Luis | |
| dc.creator | Borrás, A. | |
| dc.creator | Casas, Montserrat | |
| dc.creator | Plastino, Ángel Ricardo | |
| dc.date | 2009 | |
| dc.date | 2014-06-05T20:13:28Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/36276 | |
| dc.identifier | http://www.m-hikari.com/ams/ams-password-2009/ams-password21-24-2009/plastinoAMS21-24-2009.pdf | |
| dc.identifier | issn:1312-885X | |
| dc.description | We revisit the notion of using divergences, or relative-entropies, as measures of the distance between two mixed states, with special emphasis on power-law entropies. We analyze the Csisźar and Bregmantype q-divergences with reference to i) Werner states, and ii) thermal states obtained using a one-dimensional Heisenberg two-spin chain with a magnetic field <i>B</i> along the <i>z</i>-axis. In both cases, we find that the q-Jensen-Shannon divergence enlarges the range of permissible powerlaw exponents, as compared to results of previous literature. It is also shown that this divergence-measure serves as a good indicator for critical phenomena in the Heisenberg model. | |
| dc.description | Facultad de Ciencias Exactas | |
| dc.format | application/pdf | |
| dc.format | 1041-1059 | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by/3.0/ | |
| dc.rights | Creative Commons Attribution 3.0 Unported (CC BY 3.0) | |
| dc.subject | Ciencias Exactas | |
| dc.subject | Heisenberg model | |
| dc.subject | Jensen-Shannono divergence | |
| dc.title | Divergences in the 2-qubits' Space: Werner and thermal states | |
| dc.type | Articulo | |
| dc.type | Articulo | |
