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Characteristic length of an AdS/CFT superconductor
Kengo Maeda, Takashi Okamura
We investigate in more detail the holographic model of a superconductor recently found by Hartnoll, Herzog, and Horowitz [Phys. Rev. Lett. 101, 031601], which is constructed from a…
A note on causal hydrodynamics for M-theory branes
Makoto Natsuume, Takashi Okamura
We obtain new transport coefficients of causal hydrodynamics for the M2 and the M5-brane using a Kubo-like formula proposed by Baier, Romatschke, Son, Starinets, and Stephanov (arX…
Radiation from an accelerated quark via AdS/CFT
Kengo Maeda, Takashi Okamura
In this paper we investigate radiation by an accelerated quark in a strongly coupled gauge theory via AdS/CFT correspondence. According to AdS/CFT dictionary, we can read off energ…
Screening length and the direction of plasma winds
Makoto Natsuume, Takashi Okamura
We study the screening length of a heavy quark-antiquark pair in strongly coupled gauge theory plasmas flowing at velocity v following a proposal by Liu, Rajagopal, and Wiedemann.…
Hall effect in Noncommutative spaces
Akira Kokado, Takashi Okamura, Takesi Saito
In order to investigate whether space coordinates are intrinsically noncommutative, we make use of the Hall effect on the two-dimensional plane. We calculate the Hall conductivity…
Noncommutative Hall Effect
Akira Kokado, Takashi Okamura, Takesi Saito
When coordinates are noncommutative, the Hall effect is reinvestigated. The Hall conductivity is expressed with noncommutative parameters, so that in the commutative limit it tends…