No black holes at IceCube

We discuss modifications of the neutrino-nucleon cross section due to a minimal length scale. It is shown that the enhancement of the nu-N cross section due to new physics is suppressed. Especially the potential observation rate of micro black holes at neutrino telescopes is strongly reduced

No Black Holes at IceCube

We discuss modifications of the neutrino-nucleon cross section due to a minimal length scale. It is shown that the enhancement of the nu-N cross section due to new physics is suppressed. Especially the potential observation rate of micro black holes at neutrino telescopes is strongly reduced.Comment: 10 pages, 5 figures, submitted to Journal of Cosmology and Astroparticle Physic

Modification of the Casimir Effect due to a Minimal length scale

The existence of a minimal length scale, a fundamental lower limit on spacetime resolution is motivated by various theories of quantum gravity as well as string theory. Classical calculations involving both quantum theory and general relativity yield the same result. This minimal length scale is naturally of the order of the Planck length, but can be as high as ~TeV^-1 in models with large extra dimensions. We discuss the influence of a minimal scale on the Casimir effect on the basis of an effective model of quantum theory with minimal length.Comment: To appear in the proceedings of Lake Louise Winter Institute 2005 on Fundamental Interactions (LL WI 2005), Lake Louise, Alberta, Canada, 20-26 Feb 200

Private Sector Participation in Water and Sanitation for Developing Countries

Wasserversorgung, Privatisierung, Regulierung, Entwicklungsländer, Water supply, Privatization, Regulation, Developing countries

Experimental consequences of a minimal length

Es wird ein effektives Modell zur Berücksichtigung einer Minimalen Länge in der Quantenfeldtheorie vorgestellt. Im Falle der Existenz Großer Extradimensionen kann dies zu überprüfbaren Modifikationen verschiedener Experimente führen. Es werden verschiedene Phänomene wie z.B. der Casimir-Effekt, Neutrino-Nukleon-Reaktionen oder Neutrinooszillationen diskutiert.An effective model for integrating the notion of a minimum length into quantum field theory is presented. In the case of the existence of large extra dimensions, this can lead to testable modifications of various experiments. Several phenomena such as e.g. the Casimir effect, neutrino nucleon scattering or neutrino oscillations are discussed

Mini black holes at the LHC : discovery through di-jet suppression, mono-jet emission and a supersonic boom in the quark-gluon plasma in ALICE, ATLAS and CMS

We examine experimental signatures of TeV-mass black hole formation in heavy ion collisions at the LHC. We find that the black hole production results in a complete disappearance of all very high p_T (> 500 GeV) back-to-back correlated di-jets of total mass M > M_f ~ 1 TeV. We show that the subsequent Hawking-decay produces multiple hard mono-jets and discuss their detection. We study the possibility of cold black hole remnant (BHR) formation of mass ~ M_f and the experimental distinguishability of scenarios with BHRs and those with complete black hole decay. Finally we point out that a Heckler-Kapusta-Hawking plasma may form from the emitted mono-jets. In this context we present new simulation data of Mach shocks and of the evolution of initial conditions until the freeze-out

The Casimir Effect in the Presence of a Minimal Length

Large extra dimensions lower the Planck scale to values soon accessible. Not only is the Planck scale the energy scale at which effects of modified gravity become important. The Planck length also acts as a minimal length in nature, providing a natural ultraviolet cutoff and a limit to the possible resolution of spacetime. In this paper we examine the influence of the minimal length on the Casimir energy between two plates.Comment: references and comment on the figure in section III adde