Casimir effect in 2D stringy black hole backgrounds

Christodoulakis, T.; Diamandis, G.A.; Georgalas, B.C.; Vagenas, Elias C.

doi:10.1103/physrevd.64.124022

Cited by 15 publications

(13 citation statements)

References 44 publications

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“…It is obvious that the Achucarro-Ortiz black hole will be treated as a Casimir-type system [30,31,32,33]. The paper is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

Casimir effect, Achucarro-Ortiz black hole, and the cosmological constant

Vagenas

2003

Phys. Rev. D

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We treat the two-dimensional Achucarro-Ortiz black hole (also known as (1 + 1) dilatonic black hole) as a Casimir-type system. The stress tensor of a massless scalar field satisfying Dirichlet boundary conditions on two one-dimensional "walls" ("Dirichlet walls") is explicitly calculated in three different vacua. Without employing known regularization techniques, the expression in each vacuum for the stress tensor is reached by using the Wald's axioms. Finally, within this asymptotically non-flat gravitational background, it is shown that the equilibrium of the configurations, obtained by setting Casimir force to zero, is controlled by the cosmological constant.

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“…It is obvious that the Achucarro-Ortiz black hole will be treated as a Casimir-type system [30,31,32,33]. The paper is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

Casimir effect, Achucarro-Ortiz black hole, and the cosmological constant

Vagenas

2003

Phys. Rev. D

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“…the Unruh vacuum) black holes emit real particles in the form of thermal radiation, so that there is a power loss associated with Hawking radiation, it may appear that Wald's first axiom is violated. However, as demonstrated in [26], for such cases it is the regularized energy-momentum tensor T µ ν which satisfies the conservation equation ∇ µ T µ ν = 0. For the Unruh vacuum the regularized energy-momentum tensor is…”

Section: Thermodynamics and Particle Creation In Frw Space-timementioning

confidence: 99%

Inflation with a graceful exit and entrance driven by Hawking radiation

Modak

Singleton

2012

Phys. Rev. D

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We present a model for cosmological inflation which has a natural "turn on" and a natural "turn off" mechanism. In our model inflation is driven by the Hawking-like radiation that occurs in Friedman-Robertson-Walker (FRW) space-time. This Hawking-like radiation results in an effective negative pressure "fluid" which leads to a rapid period of expansion in the very early Universe.As the Universe expands the FRW Hawking temperature decreases and the inflationary expansion turns off and makes a natural transition to the power law expansion of a radiation dominated universe. The "turn on" mechanism is more speculative, but is based on the common hypothesis that in a quantum theory of gravity at very high temperatures/high densities Hawking radiation will stop. Applying this speculation to the very early Universe implies that the Hawking-like radiation of the FRW space-time will be turned off and therefore the inflation driven by this radiation will turn off. * Electronic address: sujoy@iucaa.ernet.in † Electronic address: dougs@csufresno.edu 1 arXiv:1207.0230v2 [gr-qc]

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“…One has to add a contribution of the chiral anomaly to the Polyakov action [341,351] 52 . Another generalization [106] consists in considering the Casimir force due to a minimally coupled scalar field between two surfaces on a CGHS background.…”

Section: Minimally Coupled Scalarsmentioning

confidence: 99%

Dilaton gravity in two dimensions

2002

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The study of general two dimensional models of gravity allows to tackle basic questions of quantum gravity, bypassing important technical complications which make the treatment in higher dimensions difficult. As the physically important examples of spherically symmetric Black Holes, together with string inspired models, belong to this class, valuable knowledge can also be gained for these systems in the quantum case. In the last decade new insights regarding the exact quantization of the geometric part of such theories have been obtained. They allow a systematic quantum field theoretical treatment, also in interactions with matter, without explicit introduction of a specific classical background geometry. The present review tries to assemble these results in a coherent manner, putting them at the same time into the perspective of the quite large literature on this subject.

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Casimir effect in 2D stringy black hole backgrounds

Cited by 15 publications

References 44 publications

Casimir effect, Achucarro-Ortiz black hole, and the cosmological constant

Casimir effect, Achucarro-Ortiz black hole, and the cosmological constant

Inflation with a graceful exit and entrance driven by Hawking radiation

Dilaton gravity in two dimensions

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