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Shearing black holes and scans of the quark matter phase diagram
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.
2014 (English)In: Classical and quantum gravity, ISSN 0264-9381, E-ISSN 1361-6382, Vol. 31, no 2, 025009- p.Article in journal (Refereed) Published
Abstract [en]

Future facilities such as FAIR and NICA are expected to produce collisions of heavy ions generating quark-gluon plasmas (QGPs) with large values of the quark chemical potential; peripheral collisions in such experiments will also lead to large values of the angular momentum density, associated with the internal shearing motion of the plasma. It is well known that shearing motions in fluids can lead to instabilities which cause a transition from laminar to turbulent flow, and such instabilities in the QGP have recently attracted some attention. We set up a holographic model of this situation by constructing a gravitational dual system exhibiting an instability which is indeed triggered by shearing angular momentum in the bulk. We show that holography indicates that the transition to an unstable fluid happens more quickly as one scans across the quark matter phase diagram towards large values of the chemical potential. This may have negative consequences for the observability of quark polarization effects.

Place, publisher, year, edition, pages
2014. Vol. 31, no 2, 025009- p.
Keyword [en]
black branes, holography, gauge/gravity duality
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-141290DOI: 10.1088/0264-9381/31/2/025009ISI: 000329984900010Scopus ID: 2-s2.0-84896518287OAI: oai:DiVA.org:kth-141290DiVA: diva2:696187
Note

QC 20140213

Available from: 2014-02-13 Created: 2014-02-13 Last updated: 2017-12-06Bibliographically approved

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