[math-ias] Reminder: HET Seminar Today at PU

[Lisa Fleischer]

***High Energy Theory Seminar, **Tuesday, November 27, 2012

"Holography and Chiral Superfluidity for the Quark-Gluon Plasma"*

Location: Jadwin Hall, Room A10

Time: 1:30 PM

Speaker(s): Tigran Kalaydzhyan, DESY & ITEP

*Description:* I would like to present our recent progress in 
understanding the local parity violating effects in QCD, and 
particularly in the strongly coupled quark-gluon plasma (sQGP).First, I 
will describe a fluid-gravity (holographic) approach, predicting the 
strength of the chiral magnetic and vortical effects(CME/CVE) and their 
dependence on the elliptic flow of the QGP, as well as on thermodynamic 
variables. For this purpose we build a gravity dual of an anisotropic 
fluid with multiple U(1) charges in presence of external vector fields 
and the chiral anomaly. The elliptic flow dependence allows us to 
separate P-/CP-odd effects from a purely hydrodynamic background in 
heavy-ion collisions.Second, I will focus on a novel "chiral superfluid" 
effective theory of QCD in the deconfinement phase. The main idea of the 
model is the presence of a light axion-like dynamic degree of freedom 
within QCD, which one can obtain by a 4D bosonization of the near-zero 
fermionic(Dirac) modes. This new axion-like field accommodates the 
essential chiral properties of QGP and, together with thermalized quarks 
and gluons, forms a two-component fluid. The latter turns out to be an 
unconventional (chiral) superfluid, which, being polarized in 
electromagnetic fields, gives rise to CME and other potentially 
measurable physical phenomena. I will also comment on topological 
defects populating the QCD vacuum as a physical origin of the 
superfluidity..

-- 
Lisa Fleischer
Academic Assistant
School of Natural Sciences
Institute for Advanced Study
Einstein Drive
Princeton, NJ 08540
609-734-8215
lisa at ias.edu

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