[en] General features of the Gribov-Regge approach to the description of high energy hadronic collisions are considered. A special attention is paid to the treatment of so-called semi-hard interactions and to the role of enhanced Pomeron diagrams which describe non-linear interaction effects. It is shown that different subclasses of such diagrams dominate interaction cross sections and inclusive particle spectra. Also we discuss the modification of the standard scheme by the correct treatment of the energy-momentum sharing mechanism in hadronic collisions

[en] The production of strange pentaquark states (e.g., Theta baryons and Ξ^-- states) in hadronic interactions within a Gribov-Regge approach is explored. In this approach the Θ⁺(1540) and the Ξ are produced by disintegration of remnants formed by the exchange of pomerons between the two protons. We predict the rapidity and transverse momentum distributions as well as the 4π multiplicity of the Θ⁺, Ξ^--, Ξ^-, Ξ⁰ and Ξ⁺ for √s=17 GeV (SPS) and 200 GeV (RHIC). For both energies more than 10^-3 Θ⁺ and more than 10^-5 Ξ per pp event should be observed by the present experiments

[en] We recently proposed a new approach to high energy nuclear scattering, which treats hadronic collisions in a sophisticated way. Demanding theoretical consistency as a minimal requirement for a realistic model, we provide a solution for the energy conservation, screening problems and identical elementary interactions, the so-called 'Parton-Based Gribov-Regge Theory' including enhanced diagrams. We can now present some of our results for SPS and RHIC energies

[en] We summarize the main features of the hadronic interaction model EPOS, which is used for cosmic ray air shower simulations but also for p-p, p-A, and A-A collisions to be compared with experimental data from LHC and RHIC.

[en] Interpretation of EAS experiments results is strongly based on air shower simulations. The latter being based on hadronic interaction models, any new model can help for the understanding of the nature of cosmic rays. The new model EPOS reproducing all major results of existing accelerator data (including detailed data of RHIC experiments) has been introduced in air shower simulation programs CORSIKA and CONEX allowing comparison with former models such as QGSJET01 or SIBYLL. New results for air shower observables will be discussed in detail. (orig.)

[en] Currently the uncertainty in the prediction of shower observables for different primary particles and energies is dominated by differences between hadronic interaction models. The LHC data on minimum bias measurements can be used to test Monte Carlo generators and these new constraints will help to reduce the uncertainties in air shower predictions. In this article, after a short introduction on air showers we will show the results of the comparison between the updated version of high energy hadronic interaction models EPOS LHC and QGSJETII-04 with LHC data. Results for air shower simulations and their consequences on comparisons with air shower data will be discussed. (authors)

[en] We discuss why the hydrodynamic description should not only be applicable to heavy ion collisions at RHIC, but also for proton proton scattering at the LHC. A new realistic treatment of the hydrodynamic evolution is tested by comparing to AuAu data at RHIC, in particular concerning the 'ridge' phenomenon. We apply our new approach to obtain first results for pp at LHC energies.

[en] Whereas air shower simulations are very valuable tools for interpreting cosmic ray data, there is a long-standing problem: it is difficult to accommodate at the same time the longitudinal development of air showers and the number of muons measured on the ground. Using a new hadronic interaction model (EPOS) in air shower simulations produces much more muons, in agreement with results from the HiRes-MIA experiment. We find that this is mainly due to a better description of (anti) baryon production in hadronic interactions. This is an aspect of air shower physics which has been neglected so far

[en] The interpretation of extensive air showers (EAS) experiments results is strongly based on air shower simulations. The latter being based on hadronic interaction models, any new model can help to understand the nature of cosmic rays. The EPOS model, reproducing all major results of existing accelerator data (including detailed data of RHIC experiments), has been introduced in air shower simulation programs CORSIKA and CONEX a few years ago. The new EPOS 1.99 has recently been updated taking into account the problem seen in EAS development using EPOS 1.61. We will show in detail the relationship between some EPOS hadronic properties and EAS development, as well as the consequences on the model and finally on cosmic ray analysis.

[en] We discuss recent developments in the EPOS approach, concerning an event-by-event treatment of the hydrodynamical evolution in heavy ion collisions and also high multiplicity pp scatterings at the Lhc. The initial conditions are flux-tubes, which are formed following elementary (multiple) scatterings, both soft ones and hard ones.