ZPEnergy.com - Is Everything Made of Mini Black Holes?

By investigating quantum gravity at the horizons of black holes, a new model suggests that black hole evaporation might appear identical to elementary particle decay. Image credit: Coyne and Cheng.

(PhysOrg.com) -- In trying to understand how gravity behaves on the quantum scale, physicists have developed a model that has an interesting implication: mini black holes could be everywhere, and all particles might be made of various forms of black holes.

The scientists, Donald Coyne from UC Santa Cruz (now deceased) and D. C. Cheng from the Almaden Research Center near San Jose, are cautious about the idea, but say that it's worth investigating with the Large Hadron Collider (LHC) and other high energy physics experiments. Cruz and Cheng have presented their idea in a study posted on arxiv.org, "A Scenario for Strong Gravity in Particle Physics: An alternative mechanism for black holes to appear at accelerator experiments."

As the physicists explain, gravity is considered an astronomical-scale force; its effects on smaller scales seem to be virtually nonexistent. However, as the scientists write, "it has often been assumed that near the Planck scale, gravity would somehow assert itself and become comparable in strength to the other forces of nature, likely as a product of some grand unification picture." Coyne and Cheng approach the problem of small-scale gravity by presenting a new model of black hole evaporation. As black holes lose energy, they slowly evaporate, shrinking in size down to the quantum scale - where they may be identical to elementary particles.

The new model assumes "that gravity is truly strong and fully comparable with other forces, but that we have not experimentally looked in those places where it resides," the authors write. "But instead of invoking extra dimensions and branes, we look elsewhere. An obvious place where experimentalists have not tested gravity, in any way, is directly at the horizons of black holes of sufficient temperature such that quantum gravity could be operative. We speculate that at this level, the spacetime structures of the horizons could be far more complex than those predicted by general relativity. They might well require more degrees of freedom to stipulate a particular state, and they might leak information; i.e., not be true horizons in the usual sense of the word. Most important, if gravity on or within these horizons is truly strong, yet we see no evidence of that on larger scales, then the complex horizons must be shielding in nature." A shielding pseudo-horizon, they say, is an unconventional speculation, as it suggests that gravity is a very strong force but is substantially shielded. ..

Full article: http://www.physorg.com/news161857121.html


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