On non-uniform smeared black branes

Details On non-uniform smeared black branes On non-uniform smeared black branes

2005-06-02

arxiv.org/abs/hep-th/0506019v2

Class.Quant.Grav. 22 (2005) 3853-3874

Physics

High Energy Physics

High Energy Physics - Theory

24 pages, 2 figures; v2: typos corrected, submitted to Class.Quant.Grav

Scientific paper

10.1088/0264-9381/22/19/004

We investigate charged dilatonic black $p$-branes smeared on a transverse circle. The system can be reduced to neutral vacuum black branes, and we perform static perturbations for the reduced system to construct non-uniform solutions. At each order a single master equation is derived, and the Gregory-Laflamme critical wavelength is determined. Based on the non-uniform solutions, we discuss thermodynamic properties of this system and argue that in a microcanonical ensemble the non-uniform smeared branes are entropically disfavored even near the extremality, if the spacetime dimension is $D \le 13 +p$, which is the critical dimension for the vacuum case. However, the critical dimension is not universal. In a canonical ensemble the vacuum non-uniform black branes are thermodynamically favorable at $D > 12+p$, whereas the non-uniform smeared branes are favorable at $D > 14+p$ near the extremality.

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