Abstract: It is argued that free QFT can be defined on the event horizon of a Schwarzschild-like spacetime and that that theory is unitarily and algebraically equivalent to QFT in the bulk (near the horizon). Under that unitary equivalence the bulk hidden SL(2,R) symmetry found in a previous work becomes manifest on the event horizon, it being induced by a group of horizon diffeomorphisms. The ...

The recently suggested interpretation [1] of the universal hadronic freeze-out temperature T f (≃ 170 Mev) – found for all high energy scattering processes that produce hadrons: e + e − , pp, p¯ p, πp, etc. and N N ′ (heavy-ion collisions) – as a Unruh temperature triggers here the search for the gravitational black-hole that in its near-horizon approximation better simulates this hadronic phen...

We consider optimal control problems for a class of hybrid systems with switches dependent on an external event process. In the case where all event times in this process are fully known, the solution to such problems was obtained in prior work. When event times are uncertain or unknown, we have proposed in prior work a Receding Horizon (RH) control scheme in which only some future event inform...

ABSTRACT We point out that averages of equivariant observables of 2D topological gravity are not globally defined forms on moduli space, when one uses the functional measure corresponding to the formulation of the theory as a 2D superconformal model. This is shown to be a consequence of the existence of the Gribov horizon and of the dependence of the observables on derivatives of the super-ghos...

This paper further explores the horizon e®ect in the optimal static and dynamic demand for risky assets under return predictability as documented by Barberis (2000). Contrary to the case of stocks, the optimal demand for longterm Government bonds of a buy-and-hold investor is not necessarily increasing in the investment horizon, and may in fact be decreasing for some initial levels of the predi...

The Deepwater Horizon (DWH) oil spill in the Gulf of Mexico in 2010 resulted in serious damage to local marine and coastal environments. In addition to the physical removal and chemical dispersion of spilled oil, biodegradation by indigenous microorganisms was regarded as the most effective way for cleaning up residual oil. Different microbiological methods were applied to investigate the chang...

We consider the cosmological consequences of a network of superconducting cosmic strings. For strong enough current the period of friction domination never ends. Instead a plasma scaling solution is reached. We demonstrate that this gives rise to a very different cosmology than the usual horizon scaling solution. In particular the string network gives rise to a distinct imprint on the microwave...

P. Ivančić et al: Search and Rescue Radar... 1. MODEL FOR CALCULATING THE TRANSPONDER’S RADIO HORIZON / Model za izračun radio horizonta odgovarača The radar horizon is typically calculated according to the radio horizon pattern derived from the calculation of the geometric horizon [8]. The geometric horizon (Gh) for the values: r – radius of the Earth ≈ 6378 km or 3440 NM ha – height of aerial...

We consider semicontinuous controlled Markov models in discrete time with total expected losses. Only control strategies which meet a set of given constraint inequalities are admissible. One has to build an optimal admissible strategy. The main result consists in the constructive development of optimal strategy with the help of the dynamic programming method. The model studied covers the case o...