Anomalies and Transport - brown.edu
Transcript of Anomalies and Transport - brown.edu
Anomalies and Transport
Karl LandsteinerInstituto de Física Teórica, UAM-CSIC
in collaboration withI. Amado, E. Megías, L. Melgar, F. Peña-Benitez,
arXiv:1102.4577 (JHEP 1105.5006)arXiv:1103.5006 (Phys. Rev. Lett.)
to appear
11th Workshop on non-perturbative QCD Paris 2011
OutlineMovie
The CME (flash review)
Kubo formulas I
Hydrodynamics
Kubo formulas II
weak coupling
strong coupling
[Kharzeev, McLarren, Warringa, Nucl. Phys A803,227, arXiv:0706.1026][Fukushima, Kharzeev, Warringa, Phys. Rev. D78, 074033, arXiv:0706.1026][Kharzeev, Warringa, Phys. Rev. D80 (2009) 034028, arXiv:0907.5007]
RHIC’s hot quark soup
Please click below for an introductory movie
http://youtu.be/kXy5EvYu3fw
The CME
B
J
+
-
Text
[Kharzeev, McLarren, Warringa]
[Ruggieri’s talk]
[parity violating currents: Vilenkin ’80, Giovannini, Shaposhnikov ’98, Alekseev, Chaianov, Frohlich ’98]
The CME
B
J
+
-
Magnetic Field
Text
[Kharzeev, McLarren, Warringa]
[Ruggieri’s talk]
[parity violating currents: Vilenkin ’80, Giovannini, Shaposhnikov ’98, Alekseev, Chaianov, Frohlich ’98]
The CME
B
J
+
-
Net chirality
Magnetic Field
Text
[Kharzeev, McLarren, Warringa]
[Ruggieri’s talk]
[parity violating currents: Vilenkin ’80, Giovannini, Shaposhnikov ’98, Alekseev, Chaianov, Frohlich ’98]
The CME
B
J
+
-Electric current
Net chirality
Magnetic Field
Text
[Kharzeev, McLarren, Warringa]
[Ruggieri’s talk]
[parity violating currents: Vilenkin ’80, Giovannini, Shaposhnikov ’98, Alekseev, Chaianov, Frohlich ’98]
The CME
B
J
+
-Electric current
Net chirality
Magnetic Field
P-odd charge separation
Text
[Kharzeev, McLarren, Warringa]
[Ruggieri’s talk]
[parity violating currents: Vilenkin ’80, Giovannini, Shaposhnikov ’98, Alekseev, Chaianov, Frohlich ’98]
Kubo formulas IChiral magnetic conductivity
Kubo formula, general symmetry group
[Kharzeev, Warringa]�J = σ �B
σAB = limpj→0
�
i,k
i
2pj�ijk�JA
i JBk �
����ω=0
Kubo formulas I chiral fermions
chemical potentials and Cartan generators
1-loop calculation
[Newman, Son], [Newman]
Kubo formulas I chiral fermions
chemical potentials and Cartan generators
1-loop calculationAnomalycoeff
[Newman, Son], [Newman]
Kubo formulas I
∼ dABC
TA
TB TC
AμA pure gauge
AνB AρC
Kubofinite density: charge transport => energy transport
energy flux sourced by magnetic fields
at ω=0 reverse order of operators
[Neiman, Oz], [Loganayagam], [Kharzeev, Yee]
Kubofinite density: charge transport => energy transport
energy flux sourced by magnetic fields
at ω=0 reverse order of operators
conductivity ?
[Neiman, Oz], [Loganayagam], [Kharzeev, Yee]
KuboTμν sourced by metric
Ag “gravitomagnetic field” -> chiral gravitomagnetic effect
chiral vortical effect: fluid velocities
Hydrodynamicsalso energy flux
hydrodynamics:
Landau frame:
[Son,Surowka], [Eling, Neiman, Oz], [Erdmenger, Haack, Kaminski, Yarom], [Banerjee, Bhattacharya, Bahattacharya, Dutta Loganayagam, Surowka], [Loganayagam] [Kharzeev, Yee] [Sadovyev, Isachenkov, Zakharov]
limpj→0
i
2pj
�
i,k
�ijk �T0iT0k�|ω=0 �= 0
Hydrodynamicsξ coefficients are different from σ’s
hydro in alternative frame:include “heat currents”
kubo formulas IIas before: general symmetry group
kubo formulas IIas before: general symmetry group
Integration constantgravitational anomaly!
Kubo formulas II
∼ tr (TA)TA
gμν gλρ
AμA pure gauge
Kubo formulas II
Anomaly
axial current of one Dirac fermion
[Vilenkin ’80]
Holographymixed gauge gravitational Chern Simons term
current
on-shell we recover the anomaly
[H.U. Yee], [Gynther, KL,Pena-Benitez, Rebhan] [Kalayhdzian, Kirsch], [Gorski, Zayakin]
HolographyKubo formulas: fluctuations
background: charged AdS black hole
correlators are
coeffs consistent with weak coupling
no T^3 terms !
[Neiman, Oz], [Loganayagam]
�JJ� = −ipz� κ
2πGµ− κ
6πGβ�
SummaryAnomalies -> parity violating transport
Magnetic fields or vortices
We have derived Kubo formulas
(non)-renormalizaton
Surprise: mixed gauge gravitational anomaly contributes
Hydrodynamics and derivative expansion? (fluid/gravity)
Holography with gravitaitonal CS term
Observable effects? [Karen-Zur, Oz], [Kharzeev, Son], [Kharzeev, Yee]
SummaryAnomalies -> parity violating transport
Magnetic fields or vortices
We have derived Kubo formulas
(non)-renormalizaton
Surprise: mixed gauge gravitational anomaly contributes
Hydrodynamics and derivative expansion? (fluid/gravity)
Holography with gravitaitonal CS term
Observable effects? [Karen-Zur, Oz], [Kharzeev, Son], [Kharzeev, Yee]