The case for epistocratic republicanism

In recent years, the fortunes of democracy have waned both in theory and practice. This has added impetus not only to the republican case for strengthening democratic institutions but also to new anti-democratic thought. This article examines the claim made by Jason Brennan that epistocracy, rule by the ‘knowledgeable’, is compatible with freedom from domination. It begins by briefly explaining epistocracy and republicanism. It then presents the argument for epistocratic republicanism: that democracy can be a source of domination and that freedom from domination can be secured through non-democratic political institutions. The case against epistocratic republicanism is grounded in concerns about systemic domination and the ability of epistocrats to arbitrarily set the terms of social cooperation. These two arguments are judged on the basis of which better minimises domination while respecting its value to all people. Epistocratic republicanism is found to be less reliable because of the risks of epistemic injustice that accompanies systemic domination; democracy, accompanied by other republican institutions, is better at minimising domination and respecting persons. It concludes that republicans ought to be democrats

Justice in assistance: A critique of the Singer Solution

This article begins with an examination of Peter Singer's solution to global poverty as a way to develop a theory of justice in assistance. It argues that Singer's work, while compelling, does not seriously engage with the institutions necessary to relieve global poverty. In order to realise our obligations it is necessary to employ secondary agents, such as non-governmental organisations, that produce complex social relationships with the global poor. We should be concerned that the affluent and their secondary agents are complicit with unjust institutions or can be the source of injustice. What is needed is a theory of justice in assistance. This is a distinct area of justice theory because these agents are not primary agents, like states, but they often provide the basic social goods that we associate with primary agents. The article ends by putting forward a provisional conception of justice in assistance based on the republican idea of non-domination

Illegal immigration as resistance to global poverty

This article defends illegal immigration from the Global South to the Global North, while being agnostic about the right of the state to control borders. This argument is based on two premises: A) cosmopolitan accounts of global distributive justice and b) the human right to resistance. Given that global poverty is an avoidable and intransigent violation of human rights, resistance is justifiable. Illegal immigration is a form of "infrapolitical" resistance that is comparable to fugitive slaves. Like these slave, people living in extreme poverty experience a durable form of domination in which escape is possible, even though it is highly risky. If one thinks that slave did nothing wrong, then one cannot condemn the illegal immigrant

Is There a Human Right to Resistance?

This article is premised on the idea that global poverty is the foreseeable and avoidable by-product of the international system. This position is held by many cosmopolitans, but rarely do they deal with the consequences of this claim. This paper will examine the idea of a right to resistance in the face of global poverty. It will argue that a right to resistance is a necessary component of the political conception of human rights. It will also be argued that it is latent in some major documents and declarations to the point that it can be considered an emerging practice

Interaction Picture Density Matrix Quantum Monte Carlo

The recently developed density matrix quantum Monte Carlo (DMQMC) algorithm stochastically samples the N -body thermal density matrix and hence provides access to exact properties of many-particle quantum systems at arbitrary temperatures. We demonstrate that moving to the interaction picture provides substantial benefits when applying DMQMC to interacting fermions. In this first study, we focus on a system of much recent interest: the uniform electron gas in the warm dense regime. The basis set incompleteness error at finite temperature is investigated and extrapolated via a simple Monte Carlo sampling procedure. Finally, we provide benchmark calculations for a four-electron system, comparing our results to previous work where possible.Comment: Minor text modifications and added deviation subplot to Fig. 9 following referee's review comments. Include link to supplementary material in reference

Accurate exchange-correlation energies for the warm dense electron gas

Density matrix quantum Monte Carlo (DMQMC) is used to sample exact-on-average $N$-body density matrices for uniform electron gas systems of up to 10$^{124}$ matrix elements via a stochastic solution of the Bloch equation. The results of these calculations resolve a current debate over the accuracy of the data used to parametrize finite-temperature density functionals. Exchange-correlation energies calculated using the real-space restricted path-integral formalism and the $k$-space configuration path-integral formalism disagree by up to $\sim$$10$\% at certain reduced temperatures $T/T_F \le 0.5$ and densities $r_s \le 1$. Our calculations confirm the accuracy of the configuration path-integral Monte Carlo results available at high density and bridge the gap to lower densities, providing trustworthy data in the regime typical of planetary interiors and solids subject to laser irradiation. We demonstrate that DMQMC can calculate free energies directly and present exact free energies for $T/T_F \ge 1$ and $r_s \le 2$.Comment: Accepted version: added free energy data and restructured text. Now includes supplementary materia

Simulating temporal evolution of pressure in two-phase flow in porous media

We have simulated the temporal evolution of pressure due to capillary and viscous forces in two-phase drainage in porous media. We analyze our result in light of macroscopic flow equations for two-phase flow. We also investigate the effect of the trapped clusters on the pressure evolution and on the effective permeability of the system. We find that the capillary forces play an important role during the displacements for both fast and slow injection rates and both when the invading fluid is more or less viscous than the defending fluid. The simulations are based on a network simulator modeling two-phase drainage displacements on a two-dimensional lattice of tubes.Comment: 12 pages, LaTeX, 14 figures, Postscrip

Macroscopic Equations of Motion for Two Phase Flow in Porous Media

The established macroscopic equations of motion for two phase immiscible displacement in porous media are known to be physically incomplete because they do not contain the surface tension and surface areas governing capillary phenomena. Therefore a more general system of macroscopic equations is derived here which incorporates the spatiotemporal variation of interfacial energies. These equations are based on the theory of mixtures in macroscopic continuum mechanics. They include wetting phenomena through surface tensions instead of the traditional use of capillary pressure functions. Relative permeabilities can be identified in this approach which exhibit a complex dependence on the state variables. A capillary pressure function can be identified in equilibrium which shows the qualitative saturation dependence known from experiment. In addition the new equations allow to describe the spatiotemporal changes of residual saturations during immiscible displacement.Comment: 15 pages, Phys. Rev. E (1998), in prin

Open-source development experiences in scientific software: the HANDE quantum Monte Carlo project

The HANDE quantum Monte Carlo project offers accessible stochastic algorithms for general use for scientists in the field of quantum chemistry. HANDE is an ambitious and general high-performance code developed by a geographically-dispersed team with a variety of backgrounds in computational science. In the course of preparing a public, open-source release, we have taken this opportunity to step back and look at what we have done and what we hope to do in the future. We pay particular attention to development processes, the approach taken to train students joining the project, and how a flat hierarchical structure aids communicationComment: 6 pages. Submission to WSSSPE