Bluhm, Marcus Nahrgang, Marlene Kalweit, Alexander Arslandok, M. Braun-munzinger, Peter Floerchinger, Stefan Fraga, Eduardo S. Gazdzicki, Marek Hartnack, Christoph Herold, Christoph
...

This report summarizes the presentations and discussions during the Rapid Reaction Task Force "Dynamics of critical fluctuations: Theory -- phenomenology -- heavy-ion collisions", which was organized by the ExtreMe Matter Institute EMMI and held at GSI, Darmstadt, Germany in April 2019. We address the current understanding of the dynamics of critic...

Baumann, Daniel Beutler, Florian Flauger, Raphael Green, Daniel Slosar, Anže Vargas-Magaña, Mariana Wallisch, Benjamin Yèche, Christophe
Published in
Nature Physics

In the early Universe, fluctuations in the neutrino density produced a distinct shift in the temporal phase of sound waves in the primordial plasma. The size of this phase shift has now been constrained through baryon acoustic oscillation data.

Ezquiaga, Jose María García-Bellido, Juan Vennin, Vincent

The curvature perturbations produced during an early era of inflation are known to have quasi-Gaussian distribution functions close to their maximum, where they are well constrained by measurements of the cosmic microwave background anisotropies and of the large-scale structures. In contrast, the tails of these distributions are poorly known, altho...

Garcia-Saenz, Sebastian Pinol, Lucas Renaux-Petel, Sébastien

Recent studies of inflation with multiple scalar fields have highlighted the importance of non-canonical kinetic terms in novel types of inflationary solutions. This motivates a thorough analysis of non-Gaussianities in this context, which we revisit here by studying the primordial bispectrum in a general two-field model. Our main result is the com...

Medenjak, Marko De Nardis, Jacopo Yoshimura, Takato

We introduce non-trivial contributions to diffusion constant in generic many-body systems arising from quadratic fluctuations of their ballistically propagating, i.e. convective, modes. Our result is obtained by expanding the current operator in the vicinity of equilibrium states in terms of powers of local and quasi-local conserved quantities. We ...

Giacalone, Giuliano Gelis, François Guerrero-Rodríguez, Pablo Luzum, Matthew Marquet, Cyrille Ollitrault, Jean-Yves

Fluctuations in the initial state of heavy-ion collisions are larger at RHIC energy than at LHC energy. This fact can be inferred from recent measurements of the fluctuations of the particle multiplicities and of elliptic flow performed at the two different energies. We show that an analytical description of the initial energy-density field and its...

Feyzullayev, A. A. Aliyev, Ch. S. Mardanov, M. J. Jafarova, H. A. Huseynov, D. A. Baghirli, R. J.
Published in
Izvestiya, Atmospheric and Oceanic Physics

AbstractIn this paper, we present a statistical analysis of the results of monitoring the radon content and meteorological parameters (atmospheric pressure, temperature, and humidity) in the buildings of three stationary geophysical stations in Azerbaijan (Sheki, Shamakhi, and Kurdemir) from April 1, 2016 to September 30, 2017 and the level of thei...

Mueller, A.H. Munier, S.

We investigate properties of the particle distribution near the tip of one-dimensional branching random walks at large times $t$, focusing on unusual realizations in which the rightmost lead particle is very far ahead of its expected position -- but still within a distance smaller than the diffusion radius $\sim\sqrt{t}$. Our approach consists in a...

Andronov, E. V. Kovalenko, V. N.
Published in
Theoretical and Mathematical Physics

We calculate the strongly intensive variables Σ and Δ that suppress trivial volume fluctuations and are constructed for the charged particle multiplicity n and the total transverse momentum Pt in a modified multipomeron exchange approach for proton-proton interactions in the range of collision energies attainable with the SPS and LHC accelerators. ...

Heidmann, Pierre Warner, Nicholas P.
Published in
Journal of High Energy Physics

Superstrata are smooth horizonless microstate geometries for the supersymmetric D1-D5-P black hole in type IIB supergravity. In the CFT, “superstratum states” are defined to be the component of the supergraviton gas that is obtained by breaking the CFT into “|00〉-strands” and acting on each strand with the “small,” anomaly-free superconformal gener...