Radiation from an accelerated quark via AdS/CFT correspondence

Kengo Maeda, Takashi Okamura

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In this paper we investigate radiation by an accelerated quark in a strongly coupled gauge theory via anti-de Sitter/conformal field theory (AdS/CFT) correspondence. According to the AdS/CFT dictionary, we can read off the energy density or energy flux of the radiation from the asymptotic gravitational field in AdS bulk sourced by an accelerated string trailing behind the quark. In the case of an oscillating quark with frequency Ω, we show that the time averaged energy density is asymptotically isotropic, and it falls off as (gYM2N)1/2Ω4/R2 with distance R from the source. In a toy model of a scattered quark by an external field, we simply estimate the Poynting vector by the bremsstrahlung radiation and show that the energy flux is anisotropic outgoing radiation. Based on these investigations, we discuss the properties of strongly coupled gauge theory radiation in comparison with electromagnetic radiation.

Original languageEnglish
Article number126002
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume77
Issue number12
DOIs
Publication statusPublished - 2008 Jun 2

Fingerprint

quarks
radiation
gauge theory
flux density
dictionaries
bremsstrahlung
gravitational fields
electromagnetic radiation
strings
energy
estimates

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Mathematical Physics

Cite this

Radiation from an accelerated quark via AdS/CFT correspondence. / Maeda, Kengo; Okamura, Takashi.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 77, No. 12, 126002, 02.06.2008.

Research output: Contribution to journalArticle

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