26,372 research outputs found
Stabilizing Entangled States with Quasi-Local Quantum Dynamical Semigroups
We provide a solution to the problem of determining whether a target pure
state can be asymptotically prepared using dissipative Markovian dynamics under
fixed locality constraints. Beside recovering existing results for a large
class of physically relevant entangled states, our approach has the advantage
of providing an explicit stabilization test solely based on the input state and
constraints of the problem. Connections with the formalism of frustration-free
parent Hamiltonians are discussed, as well as control implementations in terms
of a switching output-feedback law.Comment: 11 pages, no figure
Solving the Nose-Hoover thermostat for Nuclear Pasta
In this work we present a calculation of the hamiltonian variables solving
the molecular dynamics equations of motion for a system of nuclear matter
relevant to the description of nuclear pasta. The temperature is kept fixed by
using the Nos\'{e}-Hoover Thermostat and the interaction is modelled via a
semiclassical potential depending on both positions and momenta.Comment: 7 pages, 3 figures. Journal of Mathematical Chemistry, in pres
The Agri-Food Cooperative Netchain: A Theoretical Framework to Study its Configuration
This paper proposes a research framework of the design and configuration of agrifood chains where the focal firm is a second-tier cooperative (group of affiliated cooperatives) in order to assess the alignment of (relational) governance structures and coordination mechanisms in these chains with supply chain management (SCM) principles. The theoretical framework proposes an integrative approach by drawing on the Relational View of inter-organisational competitive advantage and the Theory of Networks as inter-cooperative vertical relationships are embedded in horizontal ties between firms (first-tier cooperatives) of social rather economic nature. The conceptual framework developed herein will help theory building in SCM, but most importantly it would advance current knowledge on the scope of SCM in the agrifood cooperative sector.supply chain management, agrifood cooperatives, governance structure and coordination mechanisms, Agribusiness,
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