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Heavy quark diffusion in an overoccupied gluon plasma

We extract the heavy quark diffusion coefficient k and the resulting momentum broadening h p2i of a heavy quark embedded in a far-from-equilibrium gluon plasma using classical-statistical lattice simulations. We find several features in the time dependence of the momentum broadening: a short initial rapid growth of h p2i, followed by linear growth with time due to Langevin-type dynamics and damped

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Political use of history played a pivotal role in legitimizing the war in Iraq, and by taking a closer look at the use of history one can get closer to understanding the reasons for the decision to go to war. The first part of the article argues that former Prime Minister Anders Fogh Rasmussen and the Liberal and Conservative parties legitimized war participation by writing it into a particular in

The EEAS navigating foreign policy paradigms

Addressing the issue of EU foreign policy, this article analyses one of the European institutions, the EEAS, and examines how the EEAS navigates in a European landscape characterised by a handful of main foreign policy paradigms. In particular, we ask how the EEAS has adjusted its foreign policies in the light of competing paradigms. In the first section, we explicate the key concepts including po

Globalisation in reverse? Reconfiguring the geographies of value chains and production networks

Standing at a crossroads, where ongoing 'slowbalisation' coincides with new forces such as the outbreak of the Covid-19 pandemic, heightened geopolitical tensions, the emergence of disruptive technologies and the increasing urgency of addressing environmental challenges, many important questions remain unsolved regarding the nature and impact of the current economic globalisation. This special iss

Probabilistically violating the first law of thermodynamics in a quantum heat engine

Fluctuations of thermodynamic observables, such as heat and work, contain relevant information on the underlying physical process. These fluctuations are however not taken into account in the traditional laws of thermodynamics. While the second law is extended to fluctuating systems by the celebrated fluctuation theorems, the first law is generally believed to hold even in the presence of fluctuat

Borders before Nations : Encounters in the Akan and Dzungar Borderlands, 1450–1750

This article combines the methodological approaches and insights of two scholars working in distinct regions of the early modern world, namely West Africa and Central Asia, to consider border-making outside of Europe before the nation state. Using borders to understand historical developments is not unprecedented and decades of borderland studies have shown how borders result from, and are affecte

Agriculture for Economic Development in Africa Evidence from Ethiopia

This book explores the role of agriculture in long-term economic growth. With a particular focus on Ethiopia, the role of the state in igniting agricultural growth and in sustaining economic growth is highlighted as essential for low-income countries. Taking ideas from both economic history and development economics, the ability of Ethiopia and the rest of Africa to sustain recent rapid growth intThe twenty-frst century has seen the concurrent rise of optimism about economic growth in sub-Saharan Africa and the return of the agricultural sector to the top of the development agenda. Ethiopia—with its rapid economic growth for two decades, achieved during a policy focus on the agricultural sector—is at the forefront of both these developments. This chapter introduces the book’s main theme of

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The present article analyses the relation between politics and historiography in communist Romania (1948- 1989). Since the beginning of the four-decades-long communist dictatorship, history has been turned into an ancillary discipline of the political discourse. The analysis of this peculiar kind of historiography starts from the processes that have determined its political nature and brought to i

Disentangling soft and collinear effects in QCD parton showers

We introduce a method for the separation of soft and collinear logarithms in QCD parton evolution at O(αs2) and at leading color. Using an implementation of the technique in the dire parton shower, we analyze the numerical impact of genuine triple-collinear corrections from quark pair emission in e+e-→ hadrons.

Energy efficiency at what cost? Unjust burden-sharing of rent increases in extensive energy retrofitting projects in Sweden

Although renovation costs can lead to rent increases in energy retrofitting, it is often assumed that reductions in energy costs will counterbalance the rent increase. In Swedish multifamily housing, energy costs for heating are however generally included as a fixed component in the monthly rent, meaning that the rent increase after energy retrofitting corresponds to the net change in rent level aAlthough renovation costs can lead to rent increases in energy retrofitting, it is often assumed that reductions in energy costs will counterbalance the rent increase. In Swedish multifamily housing, energy costs for heating are however generally included as a fixed component in the monthly rent, meaning that the rent increase after energy retrofitting corresponds to the net change in rent level a

Measurement of the relative Bc± /B± production cross section with the ATLAS detector at s =8 TeV MEASUREMENT of the RELATIVE Bc± /B± ... AABOUD M. et al.

The total cross section and differential cross sections for the production of Bc± mesons, times their branching fraction to J/ψπ±, are measured relative to those for the production of B± mesons, times their branching fraction to J/ψK±. The data used for this study correspond to an integrated luminosity of 20.3 fb-1 of pp collisions recorded by the ATLAS detector at the Large Hadron Collider in 201

Measurement of the jet mass in high transverse momentum Z(→bb‾)γ production at s=13TeV using the ATLAS detector

The integrated fiducial cross-section and unfolded differential jet mass spectrum of high transverse momentum Z→bb‾ decays are measured in Zγ events in proton–proton collisions at s=13TeV. The data analysed were collected between 2015 and 2016 with the ATLAS detector at the Large Hadron Collider and correspond to an integrated luminosity of 36.1fb−1. Photons are required to have a transverse momen