Browsing by UP Author "Zander, Claudia"

Browsing by UP Author "Zander, Claudia"

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  • Characterization of correlations in two-fermion systems based on measurement induced disturbances 
    Majtey, Ana P.; Zander, Claudia; Plastino, Angel Ricardo (Angelo) (Springer, 2013-04)
    We introduce an approach for the characterization of quantum correlations in two-fermion systems based upon the state disturbances generated by the measurement of “local” observables (that is, quantum observables ...
  • Classical analogue of the statistical operator 
    Plastino, Angelo; Plastino, Angel Ricardo (Angelo); Zander, Claudia (Springer, 2014-03)
    We advance the notion of a classical density matrix, as a classical analogue of the quantum mechanical statistical operator, and investigate its main properties. In the case of composite systems a partial trace-like operation ...
  • Entanglement and the quantum brachistochrone problem 
    Borras, A.; Zander, Claudia; Casas, Montserrat; Plastino, Angel Ricardo (Angelo) (EPLA, 2008)
    Entanglement is closely related to some fundamental features of the dynamics of composite quantum systems: quantum entanglement enhances the “speed” of evolution of certain quantum states, as measured by the time required ...
  • Entanglement and the speed of evolution of multi-partite quantum systems 
    Zander, Claudia; Plastino, Angel Ricardo (Angelo); Casas, Montserrat (American Institute of Physics, 2007-03-16)
    There exists an interesting relationship between entanglement and the time evolution of composite quantum systems: quantum entanglement enhances the 'speed' of evolution of certain quantum states, as measured by the time ...
  • Entanglement and the speed of evolution of two interacting qubits 
    Zander, Claudia; Borras, A.; Plastino, Angel Ricardo (Angelo); Casas, Montserrat (Institute of Physics, 2013-02-12)
    The time needed by a quantum system to reach a state fully distinguishable from the original one provides a natural way of determining how fast the corresponding dynamical evolution is. This orthogonality time admits a ...
  • Entropic entanglement criteria for Fermion systems 
    Zander, Claudia; Plastino, Angel Ricardo (Angelo); Casas, Montserrat (Springer, 2012-01)
    Entanglement criteria for general (pure or mixed) states of systems consisting of two identical fermions are introduced. These criteria are based on appropriate inequalities involving the entropy of the global density ...
  • Entropiese verstrengelingskriteria vir fermionstelsels 
    Zander, Claudia (AOSIS Open Journals, 2013)
    Entanglement criteria for general (pure or mixed) states of systems consisting of N identical fermions are introduced. These criteria are based on appropriate inequalities involving the entropy of the global density ...
  • Fidelity measure and conservation of information in general probabilistic theories 
    Zander, Claudia; Plastino, Angel Ricardo (Angelo) (EPLA, 2009-04)
    We investigate the main features of a measure of fidelity between states in a general family of probabilistic theories admitting classical probability theory and standard quantum theory as particular instances. We apply ...
  • Gross features of finite nuclei at finite temperatures 
    Coelho, Sergio M.M.; Zander, Claudia; Miller, H.G. (Springer, 2010-03)
    A simple expression is obtained for the low-temperature behaviour of the energy and entropy of finite nuclei for 20 ≤ A ≤ 250. The dependence on A of these quantities is for the most part due to the presence of the asymmetry ...
  • Landauer’s principle and divergenceless dynamical systems 
    Zander, Claudia; Plastino, Angel Ricardo (Angelo); Casas, Montserrat; Curilef, Sergio (MDPI, 2009-10-13)
    Landauer’s principle is one of the pillars of the physics of information. It constitutes one of the foundations behind the idea that “information is physical”. Landauer’s principle establishes the smallest amount of energy ...
  • Quantum entanglement in a many-body system exhibiting multiple quantum phase transitions 
    Zander, Claudia; Plastino, Angel Ricardo (Angelo) (Sociedade Brasileira de Fisica, 2009-08)
    We investigate the quantum entanglement-related features of the many-body model of Plastino and Moszkowski [N. Cimento 47 (1978) 470]. This is an exactly solvable N-body, SU2 two-level model exhibiting several quantum ...
  • Revisiting entanglement within the Bohmian approach to quantum mechanics 
    Zander, Claudia; Plastino, Angel Ricardo (MDPI Publishing, 2018-06-18)
    We revisit the concept of entanglement within the Bohmian approach to quantum mechanics. Inspired by Bohmian dynamics, we introduce two partial measures for the amount of entanglement corresponding to a pure state of a ...
  • Some entanglement features exhibited by two, three and four qubits interacting with an environment in a non-Markovian regime 
    Hamadou-Ibrahim, A.; Plastino, Angel Ricardo (Angelo); Zander, Claudia (Institute of Physics, 2010-01)
    We explore various aspects of the quantum entanglement dynamics of systems of two, three and four qubits interacting with an environment at zero temperature in a non-Markovian regime, as described by the paradigmatic model ...
  • Two particles in a double well : illustrating the connection between entanglement and the speed of quantum evolution 
    Curilef, Sergio; Zander, Claudia; Plastino, Angel Ricardo (Angelo) (American Institute of Physics, 2006-09)
    The connection between entanglement and the speed of quantum evolution (as measured by the time needed to reach an orthogonal state) is discussed in the case of two quantum particles moving in a one-dimensional double well. ...
  • Uncertainty relations and entanglement in fermion systems 
    Zander, Claudia; Plastino, Angel Ricardo (Angelo) (American Physical Society, 2010-06)
    The violation of uncertainty relations is used as a signature of entanglement for both pure and mixed states of two identical fermions. In the case of fermions with a four-dimensional single-particle Hilbert space we obtain ...
  • Wave packet dynamics for a non-linear Schrödinger equation describing continuous position measurements 
    Zander, Claudia; Plastino, Angel Ricardo (Angelo); Diaz-Alonso, J. (Elsevier, 2015-11)
    We investigate time-dependent solutions for a non-linear Schrödinger equation recently proposed by Nassar and Miret-Artés (NM) to describe the continuous measurement of the position of a quantum particle (Nassar, 2013; ...