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Event details

Title:��Exploring the Phase Diagram of QCD with Neutron Star Mergers:
From Long Ringdown Signals to Prompt Collapse

Abstract:��Multimessenger signals from binary neutron star (BNS) mergers are
promising tools to infer the largely unknown properties of nuclear
matter at densities that are presently inaccessible to laboratory
experiments. The gravitational waves (GWs) emitted by BNS merger remnants, in
particular, have the potential of setting tight constraints on the
neutron-star equation of state (EOS). In the first part of my talk I will present a novel correlation between
the ratio of the energy and angular momentum losses in the late-time
portion of the post-merger signal, i.e., the “long ringdown”, and the
properties of the EOS at the highest pressures and densities in
neutron-star cores. By applying this correlation to post-merger GW signals, I will show a
reduction of the EOS uncertainty at densities several times the nuclear
saturation density, where no direct constraints are currently available.
In the second part I will present a framework for the EoS of dense and
hot QCD that describes the deconfinement phase transition between a
dense baryonic and quark matter phase via the holographic V-QCD model.
This model is then used to study the consequences on the formation of
quark matter in binary neutron star mergers in the prompt and non-prompt
collapse regime.

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