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Who’s Afraid Of A Small Black Hole?

Who’s Afraid Of A Small Black Hole?. Lucas Ellerbroek Institute for Theoretical Physics, UvA, Amsterdam. Who’s afraid of a small black hole?. What is a black hole? How can we create one? Why is that not dangerous? What would we learn from that?. What is a black hole?. Very dense object

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Who’s Afraid Of A Small Black Hole?

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  1. Who’s Afraid Of A Small Black Hole? Lucas Ellerbroek Institute for Theoretical Physics, UvA, Amsterdam

  2. Who’s afraid of a small black hole? • What is a black hole? • How can we create one? • Why is that not dangerous? • What would we learn from that?

  3. What is a black hole? • Very dense object • Gravity deforms spacetime • Event Horizon at RSchw Black hole species: Supermassive M ~ 1040 kg Stellar M ~ 1030 kg Primordial M ~ 1012 kg Microscopic M ~ 10-27 kg

  4. Minimum size of black hole = Mpl= Minimal mass for gravity At the LHC: EXTRA DIMENSIONS Can we create a black hole? High-energy collision: Black hole creation is impossible! Or is it...?

  5. R ~ 1 mm Gravity on brane: if Mpl ~ 1 TeV: Black holes at LHC! We have created an all-eating monster!! Higher Dimensional scenarios 4D Brane (visible universe)‏ M Bulk space (n extra dimensions)‏  Mpl lower than in 4D

  6. Why is the LHC black hole not dangerous? Stephen Hawking: Black holes have a temperature

  7. Hawking Evaporation • Black holes are thermal blackbodies • The smaller, the hotter: • LHC black holes will evaporate instantaneously: • If Hawking radiation does not exist, they will escape from Earth anyway

  8. What can we learn from a mini black hole? • Discover hidden dimensions • Solve hierarchy problem • Observe Hawking radiation • Observe Quantum-gravitational effects • Explain cosmic dark matter

  9. Plasma Gold nuclei Black Hole Protons TBH < TPlasma Creating a stable black hole: science or fiction?

  10. Conclusion • Creating a black hole: proof for extra dimensions • It evaporates immediately: don’t be afraid • Detection would lead to major discoveries • Predict methods to create a stable black hole

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