Astrophysical constraints on Planck scale dissipative phenomena
| Autor: | Luca Maccione, Stefano Liberati |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
High Energy Physics - Theory
gr-qc General Physics and Astronomy FOS: Physical sciences Elementary particle General Relativity and Quantum Cosmology (gr-qc) General Relativity and Quantum Cosmology High Energy Physics - Phenomenology (hep-ph) Settore FIS/05 - Astronomia e Astrofisica Dispersion relation astro-ph.HE Physics High Energy Astrophysical Phenomena (astro-ph.HE) Spacetime hep-th hep-ph Dissipation High Energy Physics - Phenomenology Classical mechanics High Energy Physics - Theory (hep-th) Quasiparticle Dissipative system Quantum gravity Astrophysics - High Energy Astrophysical Phenomena Phenomenology (particle physics) |
| Popis: | The emergence of a classical spacetime from any quantum gravity model is still a subtle and only partially understood issue. If indeed spacetime is arising as some sort of large scale condensate of more fundamental objects then it is natural to expect that matter, being a collective excitations of the spacetime constituents, will present modified kinematics at sufficiently high energies. We consider here the phenomenology of the dissipative effects necessarily arising in such a picture. Adopting dissipative hydrodynamics as a general framework for the description of the energy exchange between collective excitations and the spacetime fundamental degrees of freedom, we discuss how rates of energy loss for elementary particles can be derived from dispersion relations and used to provide strong constraints on the base of current astrophysical observations of high energy particles. 5 pages, 1 figure. v2: Minor revisions. Accepted for publication in Phys. Rev. Lett |
| Databáze: | OpenAIRE |
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