After Europe

Krastev, Ivan

doi:10.9783/9780812294262

Cited by 200 publications

(81 citation statements)

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“…A better understanding of the high-density E sym (ρ) will help test theories of strong-field gravity that is not completely understood yet. In the era of gravitational wave astronomy just begun with the recent detection of GW170817 [200], reliable information about the high-density E sym (ρ) is becoming even more important [365,366]. As to supporting massive neutron stars heavier than two solar masses with a super-soft E sym (ρ) , similar to situations where various possible phase transitions and/or new particles are considered, there are probably many options.…”

Section: Src Effects On the Density Dependence Of Nuclear Symmetry Enmentioning

confidence: 99%

Nucleon effective masses in neutron-rich matter

Li¹,

Cai²,

Chen³

et al. 2018

Progress in Particle and Nuclear Physics

177

112

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Various kinds of isovector nucleon effective masses are used in the literature to characterize the momentum/energy dependence of the nucleon symmetry potential or self-energy due to the space/time non-locality of the underlying isovector strong interaction in neutron-rich nucleonic matter. The multifaceted studies on nucleon isovector effective masses are multi-disciplinary in nature. Besides structures, masses and low-lying excited states of nuclei as well as nuclear reactions, studies of the isospin dependence of short-range correlations in nuclei from scatterings of high-energy electrons and protons on heavy nuclei also help understand nucleon effective masses especially the so-called E-mass in neutron-rich matter. A thorough understanding of all kinds of nucleon effective masses has multiple impacts on many interesting issues in both nuclear physics and astrophysics. Indeed, essentially all microscopic many-body theories and phenomenological models with various nuclear forces available in the literature have been used to calculate single-nucleon potentials and the associated nucleon effective masses in neutron-rich matter. There are also fundamental principles connecting different aspects and impacts of isovector strong interactions. In particular, the Hugenholtz-Van Hove theorem connects analytically nuclear symmetry energy with both isoscalar and isovector nucleon effective masses as well as their own momentum dependences. It also reveals how the isospin-quartic term in the equation of state of neutron-rich matter depends on the high-order momentum-derivatives of both isoscalar and isovector nucleon potentials. The Migdal-Luttinger theorem facilitates the extraction of nucleon E-mass and its isospin dependence from experimentally constrained single-nucleon momentum distributions. The momentum/energy dependence of the symmetry potential and the corresponding neutron-proton effective mass splitting also affect transport properties and the liquid-gas phase transition in neutron-rich matter. Moreover, they influence the dynamics and isospin-sensitive observables of heavy-ion collisions through both the Vlasov term and the collision integrals of the Boltzmann-Uehling-Uhlenbeck transport equation. We review here some of the significant progresses made in recent years by the nuclear physics community in resolving some of the hotly debated and longstanding issues regarding nucleon effective masses especially in dense neutron-rich matter. We also point out some of the remaining key issues requiring further investigations in the era of high precision experiments using advanced rare isotope beams. Nucleon effective masses in non-relativistic modelsWe focus on non-relativistic nucleon effective masses or the ones derived from the Schrödinger equivalent singleparticle potential in relativistic models. The k-mass M * ,k J and E-mass M * ,E J of a nucleon J = n/p can be obtained from the momentum and energy dependence of the single-nucleon potential U J (ρ, δ, k, E) in nucleonic matter of density ρ and isospin asymmetry δ...

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Section: Src Effects On the Density Dependence Of Nuclear Symmetry Enmentioning

confidence: 99%

Nucleon effective masses in neutron-rich matter

Li¹,

Cai²,

Chen³

et al. 2018

Progress in Particle and Nuclear Physics

177

112

View full text Add to dashboard Cite

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“…43 As Krastev explains: 'what populists promise their voters is not competence but intimacy'. 44 Yet any political discourse that undermines truth will also challenge the status of expertise. 45 Hence another implication of the rise of populism is the declining use of science in policymaking.…”

Section: Support For Populist Parties Has Increasedmentioning

confidence: 99%

“…This emphasis on challenging existing constitutional arrangements is consistent with the arguments made by Krastev, and is a recurrent theme in Mudde's political commentary. 59 The challenge is to assess how much of this transformation is anti-democratic or anti-pluralist, and how much is a function of a long-running struggle against the institutional and political legacies of communism. 60 What is interesting to note, however, is how differently the two countries have been treated by politicians elsewhere in Europe.…”

Section: Three Illustrations Of Developments Under Waymentioning

confidence: 99%

Populism in Europe: What Scholarship Tells Us

Jones

2019

Survival

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“…The rise of challenger parties across Europe therefore testifies to the polarising influence of the Schengen crisis. Of course, the causal chain remains unexplored here -other events and deeper structural developments may have contributed to the emergence of extremist sentiments too -but the significant electoral gains made particularly by far-right parties in elections from 2015 onwards cannot be disentangled from the Schengen crisis (Krastev 2017: Mudde 2017. Figure 2 provides an overview of the performance of challenger parties in legislative elections between 2010 and 2018 in those EU member states which are a member of at least one of the Eurozone and the Schengen zone.…”

Section: Figure 1: Eurobarometer Data On 'Most Important Issues Facinmentioning

confidence: 99%

Comparing the Politicisation of EU Integration during the Euro and Schengen Crises

Schuette

2019

JCER

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Although European integration has become an increasingly salient and controversial topic in domestic politics, the consequences of this politicisation of the European Union for the integration process have not received adequate scholarly attention. To fill this lacuna, this article devises five hypotheses on the effects of politicisation for the integration process, which are subsequently tested against the evidence of the Euro and Schengen crises. Both crises had comparable origins, but the Euro crisis caused substantial deepening of integration, while the Schengen crisis has not engendered any meaningful reforming steps. The empirical analysis finds that politicisation assumed different forms across the two crises, which is shown to be one causal factor that explains the variation in crises outcomes. The article thereby contributes to a multifaceted understanding of the politicisation of international institutions, EU integration theory and the dynamics of the Euro and Refugee crises.

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After Europe

Cited by 200 publications

References 0 publications

Nucleon effective masses in neutron-rich matter

Nucleon effective masses in neutron-rich matter

Populism in Europe: What Scholarship Tells Us

Comparing the Politicisation of EU Integration during the Euro and Schengen Crises

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