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Zapiski Nauchnykh Seminarov POMI, 2011, Volume 387, Pages 102–121
(Mi znsl4098)
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This article is cited in 3 scientific papers (total in 3 papers)
$\operatorname{SU}(6)$ Casimir invariants and $\operatorname{SU}(2)\otimes\operatorname{SU}(3)$ scalars for a mixed qubit-qutrit states
V. Gerdta, D. Mladenovb, Yu. Paliic, A. Khvedelidzed a Laboratory of Information Technologies, Joint Institute for Nuclear Research, Dubna, Russia
b Department of Physics, Sofia State University, Sofia, Bulgaria
c Institute of Applied Physics, Chisinau, Moldova
d Department of Theoretical Physics, A. Razmadze Mathematical Institute, Tbilisi, Georgia
Abstract:
In the present paper few steps are undertaken towards the description of the “qubit-qutrit” pair – quantum bipartite system composed of two and three level subsystems. Calculations of the Molien functions and Poincaré series for the qubit-qubit and qubit-qutrit “local unitary invariants” are outlined and compared with the known results. The requirement of positive semi-definiteness of the density operator is formulated explicitly as a set of inequalities in five Casimir invariants of the enveloping algebra $\mathfrak{su}(6)$.
Key words and phrases:
entanglement, polynomial invariants, Molien function, positive definiteness.
Received: 20.11.2010
Citation:
V. Gerdt, D. Mladenov, Yu. Palii, A. Khvedelidze, “$\operatorname{SU}(6)$ Casimir invariants and $\operatorname{SU}(2)\otimes\operatorname{SU}(3)$ scalars for a mixed qubit-qutrit states”, Representation theory, dynamical systems, combinatorial methods. Part XIX, Zap. Nauchn. Sem. POMI, 387, POMI, St. Petersburg, 2011, 102–121; J. Math. Sci. (N. Y.), 179:6 (2011), 690–701
Linking options:
https://www.mathnet.ru/eng/znsl4098 https://www.mathnet.ru/eng/znsl/v387/p102
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Abstract page: | 257 | Full-text PDF : | 85 | References: | 45 |
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