25–30 May 2025
Daejeon Convention Center (DCC)
Asia/Seoul timezone

Speed of sound exceeding the conformal bound in dense QCD-like theories

29 May 2025, 11:00
25m
Room 2: 3F Conference Hall #301 (DCC)

Room 2: 3F Conference Hall #301

DCC

Invited Talk for Parallel Sessions (Invitation Only) Hot and Dense Nuclear Matter Parallel Session

Speaker

Etsuko Itou (YITP, Kyoto U.)

Description

We investigate the phase structure and the equation of state (EoS) for dense two-color QCD at low temperatures using the lattice Monte Carlo simulations. A rich phase structure below the pseudo-critical temperature $T_c$ as a function of quark chemical potential $\mu$ has been revealed. In high density regime, we can see a superfluid phase, where the diquark condensate takes non-zero expectation value. We newly found that the speed of sound exceeds the conformal bound, $c_{\mathrm s}^2/c^2 = 1/3$, which is the value of relativistic free theory.

Primary author

Etsuko Itou (YITP, Kyoto U.)

Presentation materials