Photon Signals from Quarkyonic Matter

Torrieri, Giorgio; Vogel, Sascha; Bäuchle, Bjørn

doi:10.1103/physrevlett.111.012301

Photon Signals from Quarkyonic Matter

Journal Article · Mon Jul 01 04:00:00 EDT 2013 · Physical Review Letters

DOI:https://doi.org/10.1103/physrevlett.111.012301· OSTI ID:1565068

Torrieri, Giorgio; Vogel, Sascha; Bäuchle, Bjørn

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 wave functions within quarkyonic matter, might be considered as a quarkyonic matter signature, provided that the 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.

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF), Oak Ridge, TN (United States); UT-Battelle LLC/ORNL, Oak Ridge, TN (United States); Columbia Univ., New York, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

DOE Contract Number:: AC05-00OR22725; FG02-93ER40764

OSTI ID:: 1565068

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 1 Vol. 111; ISSN 0031-9007; ISSN PRLTAO

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

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