National Research University – Higher School of Economics

About: National Research University – Higher School of Economics is a education organization based out in Moscow, Russia. It is known for research contribution in the topics: Population & Politics. The organization has 12873 authors who have published 23376 publications receiving 256396 citations.

Multifractality of Wave Functions on a Cayley Tree: From Root to Leaves

Abstract: Disordered quantum systems undergo Anderson localization-delocalization transitions, which exhibit very rich physics. A remarkable feature of these transitions is the multifractality of critical wave functions. The eigenfunction multifractality in a $d$-dimensional disordered system holds only at the transition point and is characterized by universal critical exponents. The authors explore the evolution of wave-function statistics on a finite Bethe lattice from the central site (``root'') to the boundary (``leaves''). They show that eigenfunction moments exhibit generally a multifractal scaling with the volume $N$. The multifractality spectrum ${\ensuremath{\tau}}_{q}$ depends on the disorder strength and on the parameter $s$ characterizing the position of the observation point, $s$ = $r/R$, where $r$ is the distance to the root and $R$ is the ``radius'' of the lattice.

Labor Market Institutions and Labor Market Performance: What Can We Learn from Transition Countries?

Abstract: This paper studies the relationship between labor market institutions and policies and labor market performance using a new and unique dataset that covers the countries of Eastern Europe and Central Asia, which in the last two decades experienced radical economic and institutional transformations. We document a clear trend towards liberalization of labor markets, especially in the countries of the former Soviet Union, but also substantial differences across the countries studied. Our econometric analysis implies that institutions matter for labor market outcomes, and that deregulation of labor markets improves their performance. The analysis also suggests several significant interactions between different institutions, which are in line with the idea of beneficial effects of reform complementarity and broad reform packages. Finally, we show that there are important advantages of focusing on a broader set of labor market outcomes, and not only on the unemployment rate, which until now has been the main approach in the empirical literature