8 research outputs found
Photon Signals from Quarkyonic Matter
We calculate the Bremsstrahlung photon spectrum emitted from dynamically
evolving quarkyonic matter, and compare this spectrum with that of a high
chemical potential quark-gluon plasma as well as to a hadron gas. We find that
the transverse momentum distribution and the harmonic coefficient is markedly
different in the three cases. The transverse momentum distribution of
quarkyonic matter can be fit with an exponential, but is markedly steeper than
the distribution expected for the quark-gluon plasma or a hadron gas, even at
the lower temperatures expected in the critical point region. The quarkyonic
elliptic flow coefficient fluctuates randomly from event to event, and within
the same event at different transverse momenta. The latter effect, which can be
explained by the shape of quark wavefunctions within quarkyonic matter, might
be considered as a quarkyonic matter signature, provided initial temperature is
low enough that the quarkyonic regime dominates over deconfinement effects, and
the reaction-plane flow can be separated from the fluctuating component.Comment: Accepted for publication, Phys.Rev.Lett. Discussion improved and
clarified, main conclusions unchange