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Sep 5 – 9, 2022
online
US/Eastern timezone
Thank you to all the participants for a great QNP2022!

Sound velocity beyond the High-Density Relativistic Limit from Lattice Simulation of Dense Two-Color QCD

Sep 6, 2022, 3:50 PM
25m
online

online

FSU, Tallahassee, FL, USA

Speaker

Etsuko Itou (iTHEMS, RIKEN)

Description

We obtain the equation of state (EoS) for two-color QCD at low temperature and high density from the lattice Monte Carlo simulation. We find that the velocity of sound exceeds the relativistic limit (cs2/c2=1/3) after BEC-BCS crossover in the superfluid phase. Such an excess of the sound velocity is predicted by several effective theories but is previously unknown from any lattice calculations for QCD-like theories. This finding might have possible relevance to the EoS of neutron star matter revealed by recent measurements of neutron star masses and radii.

speaker affiliation RIKEN

Primary author

Etsuko Itou (iTHEMS, RIKEN)

Co-author

Kei Iida (Kochi University)

Presentation materials