Image-potential band-gap narrowing at a metal/semiconductor interface

GW approximation is used to systematically revisit the image-potential band-gap narrowing at metal/semiconductor interfaces proposed by Inkson in the 1970's. Here we have questioned how the narrowing as calculated from quasi-particle energy spectra for the jellium/Si interface depends on $r_s$ of the jellium. The gap narrowing is found to only weakly depend on $r_s$ (i.e., narrowing $\simeq 0.3$ eV even for a large $r_s = 6)$. Hence we can turn to smaller polarizability in the semiconductor side as an important factor in looking for larger narrowing.Comment: 6 pages, 7 figure

ISPC Commentary on the Revised Proposal CRP 5: Water, Land and Ecosystems

ISPC commentary on the revised proposal CRP 5: Water, Land and Ecosystems. The revised proposal was approved with light adjustments by Fund Council at its 6th meeting November 8-9, 2011

Death Rate as a Demo-economic Factor of the Country's Labour Potential Reduction

The article deals with the impact of mortality rate on the reduction of labour potential. The authors determine the index of years of potential life lost, analyze the primary causes of deaths as well as provide some prognostic estimates concerning the population size in Ukraine A number of domestic and International institutions, including The State Research Institute of Information and Economic Modeling (SRIIEM), The National Institute for Strategic Studies (NISS), the United Nations Organization (UNO), the International Statistical Committee of the Commonwealth of Independent States (ISC CIS), Council of Productive Forces of Ukraine (СPFU) and the Bureau of Census US developed three possible scenarios of projected mortality in Ukraine for 2025. It were conventionally called pessimistic, intermediate and optimisti

Medium response in JEWEL and its impact on jet shape observables in heavy ion collisions

Realistic modeling of medium-jet interactions in heavy ion collisions is becoming increasingly important to successfully predict jet structure and shape observables. In JEWEL, all partons belonging to the parton showers initiated by hard scattered partons undergo collisions with thermal partons from the medium, leading to both elastic and radiative energy loss. The recoiling medium partons carry away energy and momentum from the jet. Since the thermal component of these recoils' momenta is part of the soft background activity, comparison with data requires the implementation of a subtraction procedure. We present two independent procedures through which background subtraction can be performed and discuss the impact of the medium recoil on jet shape observables. Keeping track of the medium response significantly improves the JEWEL description of jet shape measurements.Comment: 23 pages, 16 figure

The effects of k-dependent self-energy in the electronic structure of correlated materials

It is known from self-energy calculations in the electron gas and sp materials based on the GW approximation that a typical quasiparticle renormalization factor (Z factor) is approximately 0.7-0.8. Band narrowing in electron gas at rs = 4 due to correlation effects, however, is only approximately 10%, significantly smaller than the Z factor would suggest. The band narrowing is determined by the frequency-dependent self-energy, giving the Z factor, and the momentum-dependent or nonlocal self-energy. The results for the electron gas point to a strong cancellation between the effects of frequency- and momentum-dependent self-energy. It is often assumed that for systems with a nar- row band the self-energy is local. In this work we show that even for narrow-band materials, such as SrVO3, the nonlocal self-energy is important.Comment: 7 pages, 6 figure

Reducing Health Inequalities Implementation Theme. Briefing paper 1: Why health inequalities matter

This first briefing paper is an account of why health inequality matters and why health inequalities deserve consideration across all areas of CLAHRC (SY) activity. We begin by briefly reviewing the policy landscape and the prominence of 'inequality' as a growing focus of concern over the past 30 years. We then set out the type of philosophical and political considerations that may underpin the view that health inequality is a problem. Next we identify the main axes of inequality with which we suggest CLAHRC (SY) should concern itself. In the next section of the paper we set out the extent of health inequality in South Yorkshire, as far as available data allow. Finally, we show the relevance of health inequality across the CLAHRC (SY) themes and raise for discussion the implications for CLAHRC (SY) activity

A review of training and materials which aim to support the children's workforce to reduce the impact of childhood poverty and disadvantage

The Children’s Workforce Development Council (CWDC) commissioned DMSS Research and Consultancy to undertake a review of national and local support, guidance and training that aims to equip the children’s workforce to reduce the impact of child poverty. The project had the key objective of identifying effective models and strategies for developing the knowledge and skills of the children’s workforce in relation to child poverty and disadvantage, taking into account the diversity of needs in the core, and wider, workforce and across the public, private, voluntary and independent sectors

The Electronic Correlation Strength of Pu

An electronic quantity, the correlation strength, is defined as a necessary step for understanding the properties and trends in strongly correlated electronic materials. As a test case, this is applied to the different phases of elemental Pu. Within the GW approximation we have surprisingly found a "universal" scaling relationship, where the f-electron bandwidth reduction due to correlation effects is shown to depend only on the local density approximation bandwidth and is otherwise independent of crystal structure and lattice constant.Comment: 7 pages, 4 figures, This version of the paper has been revised to add additional background informatio