The German federal president in the press: Public officeholder or private citizen?

Sörensen, Jil

doi:10.1177/0267323116629878

Cited by 10 publications

(6 citation statements)

References 29 publications

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“…We use the energy-dependent light-yield L y presented in [44], including a sharp cutoff at 3 keV. We use the scintillation efficiency L e f f provided by [45]. After convolving, we then sum over the S1 signal region (2,30), finding good agreement with the LUX limits [7].…”

Section: Cdms-si Vs Xenon and Lux At Nlomentioning

confidence: 98%

Shining LUX on isospin-violating dark matter beyond leading order

et al. 2014

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Editor: W. HaxtonIsospin-violating dark matter (IVDM) has been proposed as a viable scenario to reconcile conflicting positive and null results from direct detection dark matter experiments. We show that the lowest-order dark matter-nucleus scattering rate can receive large and nucleus-dependent corrections at next-toleading order (NLO) in the chiral expansion. The size of these corrections depends on the specific couplings of dark matter to quark flavors and gluons. In general the full NLO dark-matter-nucleus cross-section is not adequately described by just the zero-energy proton and neutron couplings. These statements are concretely illustrated in a scenario where the dark matter couples to quarks through scalar operators. We find the canonical IVDM scenario can reconcile the null XENON and LUX results and the recent CDMS-Si findings provided its couplings to second and third generation quarks either lie on a special line or are suppressed. Equally good fits with new values of the neutron-to-proton coupling ratio are found in the presence of nonzero heavy quark couplings. We also derive the structure of the scattering amplitude to all orders in the chiral expansion and show the best fit points at NLO are robust against higher order corrections provided the chiral expansion is itself well-behaved. CDMS-Si remains in tension with LUX and XENON10/100 but is not excluded.

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Section: Cdms-si Vs Xenon and Lux At Nlomentioning

confidence: 98%

Shining LUX on isospin-violating dark matter beyond leading order

et al. 2014

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“…Motivated by these outstanding questions and with an eye on new experiments in a broad variety of systemsatomic 17 , optical 18 , quantum optical 1 , and solid state 2here we generalize the model studied in Ref. 1 to arbitrary one-dimensional lattices.…”

mentioning

confidence: 99%

Survival, decay, and topological protection in non-Hermitian quantum transport

Rudner,

Levin,

Levitov

2016

Preprint

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Non-Hermitian quantum systems can exhibit unique observables characterizing topologically protected transport in the presence of decay. The topological protection arises from winding numbers associated with non-decaying dark states, which are decoupled from the environment and thus immune to dissipation. Here we develop a classification of topological dynamical phases for onedimensional quantum systems with periodically-arranged absorbing sites. This is done using the framework of Bloch theory to describe the dark states and associated topological invariants. The observables, such as the average particle displacement over its life span, feature quantized contributions that are governed by the winding numbers of cycles around dark-state submanifolds in the Hamiltonian parameter space. Changes in the winding numbers at topological transitions are manifested in non-analytic behavior of the observables. We discuss the conditions under which nontrivial topological phases may be found, and provide examples that demonstrate how additional constraints or symmetries can lead to rich topological phase diagrams.

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“…Moreover, he did not find increased coverage of appearances of politicians, such as clothes, hairstyle, etc. Similarly, Sörensen (2016) found in her analysis of one important German news magazine from 1949 to 2012 that the German president (holding a mainly representative office) has become much more visible. However, the author found no clear trend towards an "intimization" of politics.…”

Section: Personalization and Intimizationmentioning

confidence: 87%

Long-Term Trends in News Content

Humprecht¹,

Udris²

2019

Oxford Research Encyclopedia of Communication

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The way news is produced and consumed has changed dramatically during the first two decades of the 21st century due to digitalization and economic pressures. In a globalized world, current events are reported in almost real time in various countries and are diffused rapidly via social media. Thus much scholarly attention is devoted to determining whether these developments have changed news content. Comparative research in the area of journalism focuses on whether news content across countries converges over time and to what degree national differences persist across countries. When studying the research on long-term trends in news content, three main observations can be made. First, theoretical assumptions are often rooted in different models of democracies, but they are rarely explicitly discussed. Second, many studies focus on the organizational level using theoretical concepts related to increased market orientation of news outlets, such as personalization, emotionalization, or scandalization. Furthermore, commercialization is associated with the effects of digitalization and globalization, namely, decreased advertising revenues and increased competition. A commonly expressed fear is that these changes have consequences for democracy and informed citizenship. Third, in recent years, there has been a steady increase of studies employing international comparisons as well as a growing standardization for measurements. These developments lead to more multicountry studies based on large samples but come at the expense of more fine-grained analysis of the way news content changes over time. Finally, the vast majority of cross-national and single-country studies focus on Western democracies. Thus our knowledge about recent changes in news content is limited to a small set of countries. Overall, many studies provide evidence for constant changes of news content driven by social, political, and economic developments. However, different media systems exhibit a sustained resilience toward transnational pressures reflected in a persistence of national differences in news content over time.

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The German federal president in the press: Public officeholder or private citizen?

Cited by 10 publications

References 29 publications

Shining LUX on isospin-violating dark matter beyond leading order

Shining LUX on isospin-violating dark matter beyond leading order

Survival, decay, and topological protection in non-Hermitian quantum transport

Long-Term Trends in News Content

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