Baryogenesis from Hawking Radiation--Anson Hook

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In summary, Anson Hook's paper "Baryogenesis from Hawking Radiation" proposes a mechanism for generating a baryon asymmetry through the asymmetric Hawking radiation of primordial black holes. This is possible due to the presence of a chemical potential, which splits the energy levels of particles and anti-particles. This work has been published in Physical Review Letters and the author, Anson Hook, has a PhD from Stanford and is currently at the Institute for Advanced Study. He has also been part of the US Physics Team and has a background in HEP-phenomenology. Interestingly, the concept of chemical potential also plays a role in other black hole analyses, such as the work of Perez and Ghosh on black hole entropy and
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Asymmetric Hawking Radiation: Baryogenesis from Hawking Radiation
Anson Hook
Abstract: We show that in the presence of a chemical potential, black hole evaporation generates baryon number. If the inflaton or Ricci scalar is derivatively coupled to the B-L current, the expansion of the universe acts as a chemical potential and splits the energy levels of particles and their anti-particles. The asymmetric Hawking radiation of primordial black holes can thus be used to generate a B-L asymmetry. If dark matter is produced by the same mechanism, the coincidence between the mass density of visible and dark matter can be naturally explained.
Date: 29/07/2014

Corresponding paper:
http://arxiv.org/abs/1404.0113
Baryogenesis from Hawking Radiation
Anson Hook
We show that in the presence of a chemical potential, black hole evaporation generates baryon number. If the inflaton or Ricci scalar is derivatively coupled to the B-L current, the expansion of the universe acts as a chemical potential and splits the energy levels of particles and their anti-particles. The asymmetric Hawking radiation of primordial black holes can thus be used to generate a B-L asymmetry. If dark matter is produced by the same mechanism, the coincidence between the mass density of visible and dark matter can be naturally explained.
11 pages, 3 figures.

someone to know of:
http://www.ias.edu/people/cos/users/11403
PhD Stanford 2012, followed by IAS from then to present.
Inspire record for Baryogenesis paper:
http://inspirehep.net/record/1288078?ln=en
Publication profile:
http://inspirehep.net/author/profile/A.Hook.1
Field listed as HEP-phenomenology
Interesting background 1/5 of US Physics Team (Olympiad 2004, Korea)
http://www.aps.org/publications/apsnews/200410/olympiad.cfm
http://www.aapt.org/olympiad2004/bio.cfm?StudentID=247
http://www.towntopics.com/jun0904/other2.html
 
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One thing that intrigued me (could be a meaningless coincidence because of the different roles and ways the concepts are defined) was the fact that a chemical potential plays such an important role BOTH here, in Hook's black hole analysis and in the Loop black hole analysis of Perez and Ghosh:
http://arxiv.org/abs/1107.1320
Black hole entropy and isolated horizons thermodynamics
Amit Ghosh, Alejandro Perez
(Submitted on 7 Jul 2011)
We present a statistical mechanical calculation of the thermodynamical properties of (non rotating) isolated horizons. The introduction of Planck scale allows for the definition of an universal horizon temperature (independent of the mass of the black hole) and a well-defined notion of energy (as measured by suitable local observers) proportional to the horizon area in Planck units. The microcanonical and canonical ensembles associated with the system are introduced. Black hole entropy and other thermodynamical quantities can be consistently computed in both ensembles and results are in agreement with Hawking's semiclassical analysis for all values of the Immirzi parameter.
5 pages. Physical Review Letters (47 cites)
http://inspirehep.net/record/917420?ln=en

This is just one of several Perez et al BH papers in which chemical potential (either of particles or of punctures) played a key role.
 
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1. What is baryogenesis from Hawking radiation?

Baryogenesis is the process of creating matter from energy, and Hawking radiation is the phenomenon where particles are emitted from a black hole. Baryogenesis from Hawking radiation is the proposed idea that this radiation can lead to the creation of matter and antimatter particles.

2. How does baryogenesis from Hawking radiation occur?

This process occurs due to the quantum fluctuations near the event horizon of a black hole. These fluctuations can result in the creation of particle-antiparticle pairs, with one particle falling into the black hole and the other escaping as Hawking radiation.

3. Is there evidence for baryogenesis from Hawking radiation?

Currently, there is no direct evidence for this process. However, it is a theoretical possibility that has not yet been disproven. Further research and observations are needed to confirm or refute this idea.

4. How does baryogenesis from Hawking radiation relate to the Big Bang theory?

Baryogenesis is an important aspect of the Big Bang theory, as it explains the abundance of matter in the universe. The proposed mechanism of baryogenesis from Hawking radiation could provide an additional explanation for the matter-antimatter asymmetry observed in the universe.

5. What are the implications of baryogenesis from Hawking radiation for our understanding of the universe?

If this process is confirmed, it could provide a new understanding of the origins of matter in the universe and how it evolved. It could also have implications for our understanding of black holes and their role in the formation of galaxies and other structures in the universe.

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