940 research outputs found
A Refined Holographic QCD Model and QCD Phase Structure
We consider the Einstein-Maxwell-dilaton system with an arbitrary kinetic
gauge function and a dilaton potential. A family of analytic solutions is
obtained by the potential reconstruction method. We then study its holographic
dual QCD model. The kinetic gauge function can be fixed by requesting the
linear Regge spectrum of mesons. We calculate the free energy to obtain the
phase diagram of the holographic QCD model.Comment: 21 pages, 17 figures. arXiv admin note: substantial text overlap with
arXiv:1301.038
Confinement-Deconfinment Phase Transition for Heavy Quarks
We study confinement-deconfinement phase transition for heavy quarks in a
bottom-up holographic QCD model. We consider a black hole background in an
Einstein-Maxwell-scalar system and add probe open strings to the background.
Combining the various configurations of the open strings and the phase
structure of the black hole background itself, we obtain the
confinement-deconfinement phase diagram for heavy quarks in the holographic QCD
model.Comment: 23 pages, 14 figures, published in JHEP. arXiv admin note: text
overlap with arXiv:1301.038
QCD Phase Diagram by Holography
We explore QCD phase diagram by constructing a holographic QCD model using
the Einstein-Maxwell-Scalar system. The chiral transition is investigated by
adding a probe scalar and confinement transition is studied by adding a probe
string into the system. By interpreting the black hole phase transition in the
bulk spacetime as the quarkyonic transition in the dual QCD theory and
introducing the bypass mechanism for deconfinement transition, we give an
explanation why chiral symmetry breaking and deconfinement transition lines
coincide with each other despite their different physical origins.Comment: 6 pages, 8 figure
Rotating Black Holes and Coriolis Effect
In this work, we consider the fluid/gravity correspondence for general
rotating black holes. By using the Petrov-like boundary condition in near
horizon limit, we study the correspondence between gravitational perturbation
and fluid equation. We find that the dual fluid equation for rotating black
holes contains a Coriolis force term, which is closely related to the angular
velocity of the black hole horizon. This can be seen as a dual effect for the
frame-dragging effect of rotating black hole under the holographic picture.Comment: 5 page
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