The Effect of Fluctuations on the QCD Critical Point in a Finite Volume

We investigate the effect of a finite volume on the critical behavior of the theory of the strong interaction (QCD) by means of a quark-meson model for two quark flavors. In particular, we analyze the effect of a finite volume on the location of the critical point in the phase diagram existing in our model. In our analysis, we take into account the effect of long-range fluctuations with the aid of renormalization group techniques. We find that these quantum and thermal fluctuations, absent in mean-field studies, play an import role for the dynamics in a finite volume. We show that the critical point is shifted towards smaller temperatures and larger values of the quark chemical potential if the volume size is decreased. This behavior persists for antiperiodic as well as periodic boundary conditions for the quark fields as used in many lattice QCD simulations.Comment: 9 pages, 2 figures, 1 tabl

Hot or not – Which features make FinTechs attractive for investors?

Attracting investors and generating funding is a key issue for all start-ups. The information asymmetries between investor and start-up need to be reduced. Despite the overwhelming literature on venture capital financing and different signals reflecting venture quality, pinpointing the signals which impact funding decisions remains an open issue. This study presents an empirical examination of the effectiveness of different signals to convince investors and generate funding. We examine the impact of signals concerning venture quality (classic ones such as human capital, intellectual capital and social alliance/network capital as well as the strategic orientation in terms of business model patterns. Based on a comprehensive sample of more than 101 German FinTechs, our study delivers empirical evidence that human capital as well as the strategic orientation positively impacts a FinTech’s attractiveness. However, our chosen measures for intellectual capital and social network/alliance capital result in negative effects