Abstract:Relying on the existing estimates for the production cross sections of mini black holes in models with large extra dimensions, we review strategies for identifying those objects at collider experiments. We further consider a possible stable final state of such black holes and discuss their characteristic signatures. Keywords: Black holes Since the discovery of the Schwarzschild solution [1], black holes have fired mans imagination. Even more since it has been pointed out that, according to the theories with… Show more
“…The other talk was by Horst Stoecker, who has been using extra dimensions and TeV scale gravity to explore the possible new particles which might be produced at the LHC [7]. This work is very speculative, since extra dimensions might not exist, and if they did, the size of such an extra dimension could be anywhere from the Compton wavelength associated with the TeV energy scale up to the Planck length.…”
“…The other talk was by Horst Stoecker, who has been using extra dimensions and TeV scale gravity to explore the possible new particles which might be produced at the LHC [7]. This work is very speculative, since extra dimensions might not exist, and if they did, the size of such an extra dimension could be anywhere from the Compton wavelength associated with the TeV energy scale up to the Planck length.…”
“…Strings and other alternative formulations of QG, such as Supergravity or Brane-World scenario, suggest that quantum gravity may also manifest at energies much below the Planck scale with expected macroscopically ob-servable effects due to the presence of low-energy quantum gravity (LEQG) fluctuations. The results of the Large Hadron Collider experiments [12,13] excluded the presence of QG phenomenologies and fluctuations at energies up to the 10 TeV scale when the Higgs boson [14] was discovered. In Refs.…”
We propose a new thought experiment, based on present-day Quantum Information Technologies, to measure quantum gravitational effects through the Bose-Marletto-Vedral (BMV) effect [1][2][3][4] by revealing the gravitational t 3 phase term, its expected relationships with low-energy quantum gravity phenomena and test the equivalence principle of general relativity. The technique here proposed promise to reveal gravitational field fluctuations from the analysis of the stochastic noise associated to an ideal output of a measurement process of a quantum system. To improve the sensitivity we propose to cumulate the effects of the gravitational field fluctuations in time on the outputs of a series of independent measurements acted on entangled states of particles, like in the building of a quantum cryptographic key, and extract from the associated time series the effect of the expected gravitational field fluctuations. In fact, an ideal quantum cryptographic key, built with the sharing of maximally entangled states of particles, is represented by a random sequence of uncorrelated symbols mathematically described by a perfect white noise, a stochastic process with zero mean and without correlation between its values taken at different times. Gravitational field perturbations, including quantum gravity fluctuations and gravitational waves, introduce additional phase terms that decohere the entangled pairs used to build the quantum cryptographic key, with the result of coloring the white noise [5,6]. We find that this setup, built with massive mesoscopic particles, can potentially reveal the t 3 gravitational phase term and thus, the BMV effect.
We present the state of the art regarding the relation between the physics of Quantum Black Holes and Noncommutative Geometry. We start with a review of models proposed in the literature for describing deformations of General Relativity in the presence of noncommutativity, seen as an effective theory of Quantum Gravity. We study the resulting metrics, proposed to replace or at least to improve the conventional black hole solutions of Einstein's equation. In particular, we analyze noncommutative-inspired solutions obtained in terms of quasi-classical noncommutative coordinates: indeed because of their surprising new features, these solutions enable us to circumvent long standing problems with Quantum Field Theory in Curved Space and to cure the singular behavior of gravity at the centers of black holes. As a consequence, for the first time, we get a complete description of what we may call the black hole SCRAM, the shut down of the emission of thermal radiation from the black hole: in place of the conventional scenario of runaway evaporation in the Planck phase, we find a zero temperature final state, a stable black hole remnant, whose size and mass are determined uniquely in terms of the noncommutative parameter θ. This result turns out to be of vital importance for the physics of the forthcoming experiments at the LHC, where mini black hole production is foreseen in extreme energy hadron collisions. Because of this, we devote the final part of this review to higher dimensional solutions and their phenomenological implications for TeV Gravity.
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