A Holographic Study on Vector Condensate Induced by a Magnetic Field
Sep 9, 2013
Citations per year
Abstract: (arXiv)
We study a holographic model with vector condensate by coupling the anti-de Sitter gravity to an Abelian gauge field and a charged vector field in dimensional spacetime. In this model there exists a non-minimal coupling of the vector filed to the gauge field. We find that there is a critical temperature below which the charged vector condenses via a second order phase transition. The DC conductivity becomes infinite and the AC conductivity develops a gap in the condensed phase. We study the effect of a background magnetic field on the system. It is found that the background magnetic field can induce the condensate of the vector field even in the case without chemical potential/charge density. In the case with non-vanishing charge density, the transition temperature raises with the applied magnetic field, and the condensate of the charged vector operator forms a vortex lattice structure in the spatial directions perpendicular to the magnetic field.- condensation: vector
- magnetic field: background
- field theory: vector
- charge: density
- coupling: vector
- operator: vector
- gravitation: anti-de Sitter
- gauge field theory: abelian
- temperature: transition
- coupling: nonminimal
References(82)
Figures(9)
- [1]
- [2]
- [3]
- [2]
- [4]
- [101]
- [5]
- [12]
- [6]
- [103]
- [7]
- [103]
- [8]
- [9]
- [03]
- [10]
- [11]
- [11]
- [12]
- [11]
- [13]
- [01]