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Title: Spinodal instabilities of baryon-rich quark matter in heavy ion collisions

Authors:
;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1356275
Grant/Contract Number:
SC0015266
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 95; Journal Issue: 5; Related Information: CHORUS Timestamp: 2017-05-09 22:12:50; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Li, Feng, and Ko, Che Ming. Spinodal instabilities of baryon-rich quark matter in heavy ion collisions. United States: N. p., 2017. Web. doi:10.1103/PhysRevC.95.055203.
Li, Feng, & Ko, Che Ming. Spinodal instabilities of baryon-rich quark matter in heavy ion collisions. United States. doi:10.1103/PhysRevC.95.055203.
Li, Feng, and Ko, Che Ming. Tue . "Spinodal instabilities of baryon-rich quark matter in heavy ion collisions". United States. doi:10.1103/PhysRevC.95.055203.
@article{osti_1356275,
title = {Spinodal instabilities of baryon-rich quark matter in heavy ion collisions},
author = {Li, Feng and Ko, Che Ming},
abstractNote = {},
doi = {10.1103/PhysRevC.95.055203},
journal = {Physical Review C},
number = 5,
volume = 95,
place = {United States},
year = {Tue May 09 00:00:00 EDT 2017},
month = {Tue May 09 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevC.95.055203

Citation Metrics:
Cited by: 3works
Citation information provided by
Web of Science

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  • If the quark-hadron transition is first order, hadron bubbles nucleate with a radius [ital R][sub nuc] and grow into the quark sea. Baryon number prefers to reside in the quark phase and must diffuse away from the interface in order for the phase transition to proceed. This slowly diffusing excess baryon number that forms on the surface of the bubble wall may drive a shape instability of the bubble wall. This instability to nonspherical structure occurs when the bubbles have grown to a critical size of (7--1000)[ital R][sub nuc], a much shorter length scale than the instabilities studied previously; thismore » effect can thus be important for heavy-ion collisions. The stability of the bubbles depends very sensitively on the ratio [epsilon]=[ital n][sub [ital h]]/[ital n][sub [ital q]] of baryon number in the two phases (in local thermodynamic equilibrium). For the expected values of the parameters, bubbles of the hadronic phase are likely to be stable in the early Universe and unstable in heavy-ion collisions. The phenomenology of heavy-ion collisions could be altered by the instability of the hadron bubbles, although future work that takes into account mutual heating effects of the bubbles and the expansion of the hot underlying plasma will be required to confirm this.« less
  • A study of the energy distribution of muon pairs and photon pairs produced in ultrarelativistic heavy-ion collisions shows that muon pairs may be better signatures than photon pairs for the detection of a baryon-rich quark-gluon plasma (QGP). The value of the transverse mass of the muon pairs at which the {rho}-meson peak disappears from their invariant-mass spectrum is sensitive to the equation of state of the QGP. Hence dimuons are useful not only for the detection of a QGP but also for a study of its equation of state.
  • We argue that the parton distributions measured in heavy ion collisions depend on the trigger for the centrality of the collisions as a result of coherent effects specific for the collisions of energetic composite particles. Percolation phase transitions in central heavy ion collisions are predicted and methods to form and to investigate such baryon rich matter are suggested.
  • We present a mechanism for the separation of strangeness from antistrangeness in the deconfinement transition. For a net strangeness of zero in the total system, the population of s quarks is greatly enriched in the quark-gluon plasma, while the s-bar quarks drift into the hadronic phase. This separation could result in ''strangelet'' formation, i.e., metastable blobs of strange-quark matter, which could serve as a unique signature for quark-gluon plasma formation in heavy-ion collisions.
  • The hadron production in relativistic heavy ion collisions is well described by the quark combination model. The mixed ratios for various hadrons and the transverse momentum spectra for long-life hadrons are predicted and agree with recent Relativistic Heavy Ion Collider data. The production rates for the pentaquarks {theta}{sup +} and {theta}{sup *++} and the di-baryon ({omega}{omega}){sub 0{sup +}} are estimated, neglecting the effect from the transition amplitude for constituent quarks to form an exotic state.