Heuristic Classification of Physical Theories based on Quantum Correlations

Taking quantum formalism as a point of reference and connection, we explore the various possibilities that arise in the construction of physical theories. Analyzing the distinct physical phenomena that each of them may describe, we introduce the different types of hidden variables theories that correspond to these physical phenomena. A hierarchical classification of the offered theories, based on the degree of correlation between dichotomic observables in bipartite systems, as quantified by a Bell type inequality, is finally proposed.Comment: 13 pages, 2 figure

Impact of electronic correlations on the equation of state and transport in ϵ\epsilon-Fe

We have obtained the equilibrium volumes, bulk moduli, equations of state of the ferromagnetic cubic $\alpha$ and paramagnetic hexagonal $\epsilon$ phases of iron in close agreement with experiment using an ab initio dynamical mean-field theory approach. The local dynamical correlations are shown to be crucial for a successful description of the ground-state properties of paramagnetic $\epsilon$-Fe. Moreover, they enhance the effective mass of the quasiparticles and reduce their lifetimes across the $\alpha \to \epsilon$ transition leading to a step-wise increase of the resistivity, as observed in experiment. The calculated magnitude of the jump is significantly underestimated, which points to non-local correlations. The implications of our results for the superconductivity and non-Fermi-liquid behavior of $\epsilon$-Fe are discussed.Comment: 6 pages, 3 figure

Experiential learning in virtues ethics through a case study: The 'St. Albans Family Enterprises'

Teaching business ethics effectively may prepare future leaders and managers to better deal with delicate situations that they might face in the workplace. However, such an aim is one of the biggest challenges that educators at universities are called on to solve. An increasing number of scholars are invoking the role of prudence in the virtue ethics context as a viable approach to teach students how to manage ethical dilemmas. In this regard, this paper presents the ‘St. Albans Family Enterprise’ case study that can serve as an instrument to help students and practitioners develop their ethical decision-making ability and to foster a disposition towards applying sound judgment or what can be called in classical terms, prudence. The paper also offers guidance to educators about how the case can be used for teaching purposes, and explains the implications of exercising practical wisdom (prudence) within a virtue ethics framework