Detecting the QCD phase transition in the next Galactic supernova neutrino burst

Abstract

Predictions of the thermodynamic conditions for phase transitions at high baryon densities and large chemical potentials are currently uncertain and largely phenomenological. Neutrino observations of core-collapse supernovae can be used to constrain the situation. Recent simulations of stellar core collapse that include a description of quark matter predict a sharp burst of anti ν_e several hundred milliseconds after the prompt ν_e neutronization burst. We study the observational signatures of that anti ν_e burst at current neutrino detectors - IceCube and Super-Kamiokande. For a Galactic core-collapse supernova, we find that signatures of the QCD phase transition can be detected, regardless of the neutrino oscillation scenario. The detection would constitute strong evidence of a phase transition in the stellar core, with implications for the equation of state at high matter density and the supernova explosion mechanism.

6 pages, 4 figures; matches published version (1 additional figure, added discussion of subsampling at IceCube). Accepted for publication in PRD

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• Correlated Gravitational Wave and Neutrino Signals from General-Relativistic Rapidly Rotating Iron Core Collapse
• The Science of the Einstein Telescope
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• Soft nuclear equation-of-state from heavy-ion data and implications for compact stars
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• Estimating the core compactness of massive stars with Galactic supernova neutrinos
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• Supernovae neutrino detection via coherent scattering off silicon nuclei
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