The Duration of Youth Unemployment in West Germany: Some Theoretical Considerations

This paper presents a theoretical model dealing with the duration of youth unemployment in West Germany. Duration can be expressed in terms of the underlying hazard function. After a brief discussion of a reasonable shape of the hazard function a distinction is made with respect to the probabilities of receiving a job offer and accepting it. Determinants of the latter decision are developed using a unified model of consumption, leisure, and job search. Uncertainty and some restrictions such as standard work time and entitlement to unemployment compensation are taken into account. The probability of receiving a job offer depends, among other factors, on the screening process undertaken by the firms .

Will the (German) NAIRU Please Stand up?

This paper deals with a critical assessment and a reestimation of the "non-accelerating in ation rate of unemployment" (NAIRU) for Germany. There are quite a few obstacles to perceiving the NAIRU as an understandable and easy-to-use analytical instrument, suitable for economic policy: the possibility of a non-vertical Phillips curve (e.g. in times of low in ation), the occurrence of shocks and hysteresis effects, the (mis-)measurement of important variables such as in ation expectations, cointegration issues, and a time variability of the NAIRU and its confidence intervals. Despite many serious caveats a new attempt is made to estimate a NAIRU for Germany based on conventional Phillips curves as well as on new approaches such as using direct measures of in ationary expectations, the Kalman filter method, and the residual-based bootstrap procedure (in order to estimate confidence intervals). However, by any method, simple or complex, the NAIRU is very hard to determine and subject to considerable arbitrariness. --NAIRU,unemployment,inflation,Phillips curve,natural rate,hysteresis,supply shocks,inflation expectations,Kalman filter,bootstrap

Real and monetary challenges to wage policy in Germany at the turn of the millenium : technical progress, globalisation and European Monetary Union ; the European unemployment problem

Lohnpolitik, Arbeitsmarkt, Deutschland, Wage policy, Labour market, Germany

Exact Solutions of Bethe-Salpeter Equations with Instantaneous Interactions

The Bethe-Salpeter approach allows for quantum-field-theoretic descriptions of relativistic bound states; its inherent complexity, however, usually prevents to find its exact solutions. Under suitable simplifying assumptions about the systems discussed, we derive analytically some examples of rigorous solutions to the instantaneous homogeneous Bethe-Salpeter equation by relating tentative solutions to the interactions responsible for the formation of bound states.Comment: 16 pages, 3 figures; v2: slightly augmented summary, matches version in PR

Instantaneous Bethe-Salpeter Look at the Lightest Pseudoscalar Mesons

Within our description of Goldstone-type pseudoscalar mesons as almost massless bound states of quark and antiquark by a three-dimensional bound-state equation of Bethe-Salpeter origin, taking into account the pointwise behaviour of the full light-quark propagators enables to characterize the effective interquark interactions more precisely than earlier studies exploiting just specific aspects.Comment: 4 pages, 2 figures, contributed to "XVII International Conference on Hadron Spectroscopy and Structure - Hadron2017" (25 - 29 September 2017, Salamanca, Spain