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Black hole particle emission in higher-dimensional spacetimes
Vitor Cardoso1, Marco Cavaglià, Leonardo Gualtieri
1Department of Physics and Astronomy, The University of Mississippi, Mississippi 38677-1848, USA. vcardoso@phy-olemiss.edu
Physical Review Letters
|April 12, 2006
Summary
Black holes in extra dimensions lose mass by emitting particles from both the bulk and the visible brane. Graviton emission significantly enhances this process, impacting black hole detection in colliders.
Area of Science:
- Theoretical physics
- High-energy physics
- Cosmology
Background:
- Black holes are predicted to evaporate via Hawking radiation.
- In models with extra spatial dimensions, black hole evaporation occurs on both the visible brane and in the higher-dimensional bulk.
- Understanding particle emission is crucial for black hole decay dynamics.
Purpose of the Study:
- To compute and analyze the emissivities of all standard model fields during black hole evaporation in extra-dimensional models.
- To determine the total power output and relative contributions of different particle species.
- To investigate the impact of increased spacetime dimensionality on graviton emission.
Main Methods:
- Calculation of absorption cross sections for various particle species.
- Computation of relative particle emissivities.
- Analysis of total power output during black hole evaporation.
- Exploration of the influence of spacetime dimensionality.
Main Results:
- Detailed computation of absorption cross sections and relative emissivities for all known fields.
- Demonstration of significantly enhanced graviton emissivity with increasing spacetime dimensionality.
- Quantification of the substantial mass loss of black holes into the bulk.
Conclusions:
- Black hole evaporation in extra dimensions involves significant mass loss into the bulk, primarily due to enhanced graviton emission.
- These findings have critical implications for the phenomenology of black holes in extra-dimensional theories.
- The enhanced emission impacts strategies for black hole detection at particle colliders.
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