Holographic spectral functions and diffusion constants for fundamental matter

By R. Myers, A. Starinets, R. Thomson. 2007

185 citations recorded by the source corpus.

The holographic dual of large-Nc super-Yang-Mills coupled to a small number of flavours of fundamental matter, Nf << Nc, is described by Nf probe D7-branes in the gravitational background of Nc black D3-branes. This system undergoes a first order phase transition characterised by the `melting' of the mesons. We study the high temperature phase in which the D7-branes extend through the black hole horizon. In this phase, we compute the spectral function for vector, scalar and pseudoscalar modes on the D7-brane probe. We also compute the diffusion constant for the flavour currents.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/1b18e0c68db605dd7795cbe4ff2961aba876a909

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. R. Myers
2. M. Rangamani
3. V. Hubeny
4. Aninda Sinha
5. S. Sachdev
6. D. Mateos
7. A. Singh
8. S. Hartnoll

In Nuclear and High Energy Physics

1. R. Myers
2. M. Rangamani
3. V. Hubeny
4. T. Takayanagi
5. D. Mateos
6. Aninda Sinha
7. S. Sachdev
8. S. Gubser

Citations in the corpus

• Unquenched Flavor in the Gauge/Gravity Correspondence (2010, background): “If, as in our cases, the brane corresponds to massless flavors, the related quasi-normal modes on the unflavored background all have frequencies with a negative imaginary part of the order of the temperature, signaling stability [75], [76].”
• Thermal noise and stochastic strings in AdS/CFT (2009, background): “This idea has been sugested by several authors but was never clarified [34, 35].”
• Holographic operator mixing and quasinormal modes on the brane (2009, background): “In certain ranges of the parameter space [8] these quasinormal modes lie close to the real axis.”
• Holographic GB gravity in arbitrary dimensions (2009, background): “Following [33], it was argued that for large q, this well supports unstable quasinormal modes.”
• Flavor superconductivity from gauge/gravity duality (2009, background): “As known from [33, 58] the resonances appearing in the spectral functions of vector fields in the bulk correspond to vector meson excitations in the dual field theory.”
• String theory and quantum chromodynamics (2007, background): “It is remarkable that strongly coupled plasmas with a gravity dual generically exhibit no peaks of this type, but only peaks associated to hydrodynamic modes and peaks whose width is comparable to their height [35, 36].”
• Holographic phase transitions at finite chemical potential (2007, background): “In the high-temperature phase there are no stable mesons and we expect a discrete spectrum of quasinormal modes [10, 11].”
• A Holographic View on Physics out of Equilibrium (2010, result): “In fact, this connection was also noted in some of the earlier works on the subject, notably [92] and [129].”
• Holographic Quantum Critical Transport without Self-Duality (2010, methodology): “While the WKB approximation may be less reliable in this regime, the analysis in [38] suggests that it is sufficient to determine the appearance of unstable modes.”
• Gauge/String Duality, Hot QCD and Heavy Ion Collisions (2011, background): “Continuity then implies that there must exist a value of q (7)An analogous result was found in [611] for time-like momenta.”
• Holographic studies of quasi-topological gravity (2010, background): “19) and hence the appearance of an instability [43].”
• Brownian Motion in AdS/CFT (2008, unknown): “(4)For an earlier discussion of the relation between Hawking radiation and diffusion the context of AdS/QCD, see [28].”