The Effect of Personal Economic Values on Economic Policy Preferences

Objectives Citizens often express that the government should be run like a business or household in the way that money is saved and spent, though individuals vary in their personal financial preferences and attitudes toward money. To explore the relationship between the personal and political, we draw upon research in psychology, economics, and consumer science on personal economic values, such as materialism and the importance of saving money. Methods Using a survey of 340 adults, we test connections between political ideology, the Big Five personality traits, and money conservation and material values. Results Our data suggest that values regarding personal money conservation are unrelated to economic policy attitudes like welfare spending and wealth redistribution, but the value individuals place on material items is predictive of these political preferences. Conclusion By showing the political significance of personal (and nonpolitical) materialism values, we contribute to a rapidly growing literature showing that political attitudes and behaviors are best understood in the context of the larger social world

Can we always get the entanglement entropy from the Kadanoff-Baym equations? The case of the T-matrix approximation

We study the time-dependent transmission of entanglement entropy through an out-of-equilibrium model interacting device in a quantum transport set-up. The dynamics is performed via the Kadanoff-Baym equations within many-body perturbation theory. The double occupancy $< \hat{n}_{R \uparrow} \hat{n}_{R \downarrow} >$, needed to determine the entanglement entropy, is obtained from the equations of motion of the single-particle Green's function. A remarkable result of our calculations is that $< \hat{n}_{R \uparrow} \hat{n}_{R \downarrow} >$ can become negative, thus not permitting to evaluate the entanglement entropy. This is a shortcoming of approximate, and yet conserving, many-body self-energies. Among the tested perturbation schemes, the $T$-matrix approximation stands out for two reasons: it compares well to exact results in the low density regime and it always provides a non-negative $< \hat{n}_{R \uparrow} \hat{n}_{R \downarrow} >$. For the second part of this statement, we give an analytical proof. Finally, the transmission of entanglement across the device is diminished by interactions but can be amplified by a current flowing through the system.Comment: 6 pages, 6 figure