Spinning branes in Riemann-Cartan spacetime

Vasilić, Milovan; Vojinović, Marko

doi:10.1103/physrevd.78.104002

Cited by 10 publications

(64 citation statements)

References 34 publications

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“…In the field equations, this is presented as a brane source. The source generically has the form of a Dirac delta distribution -without derivatives-, contrary to recent reports in the literature (see, e.g., [26,27]). This is possible on account of a non-vanishing torsion at the singular locus defining the position of the brane.…”

Section: Discussionmentioning

confidence: 79%

“…It has been recently claimed that spinning branes require derivatives of the Dirac delta function (or δ(r)/r) [26,27]. Those arguments rely on the condition of vanishing torsion everywhere but, as discussed below, this requirement is not met by the present solution.…”

Section: Sources For a Spinning 0-branementioning

confidence: 81%

“…Thus, the configurations analyzed in Refs. [26,27], not obtained by identifications, correspond to different solutions compared to the ones considered here. Let us assume a generic form for the singularity like ∆(r) = H(1/r)δ(r), where H is a power series in 1/r with coefficients depending on a and b.…”

Section: Sources For a Spinning 0-branementioning

confidence: 85%

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Geometry and stability of spinning branes in AdS gravity

et al. 2011

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The geometry of spinning codimension-two branes in AdS spacetime is analyzed in three and higher dimensions. The construction of non-extremal solutions is based on identifications in the covering of AdS space by isometries that have fixed points. The discussion focuses on the cases where the parameters of spinning states can be related to the velocity of a boosted static codimension-two brane. The resulting configuration describes a single spinning brane, or a set of intersecting branes, each one produced by an independent identification. The nature of the singularity is also examined, establishing that the AdS curvature acquires one in the form of a Dirac delta distribution. The stability of the branes is studied in the framework of Chern-Simons AdS supergravity. A class of branes, characterized by one free parameter, are shown to be stable when the BPS conditions are satisfied. In 3D, these stable branes are extremal, while in higher dimensions, the BPS branes are not the extremal ones.

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Section: Discussionmentioning

confidence: 79%

Section: Sources For a Spinning 0-branementioning

confidence: 81%

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Geometry and stability of spinning branes in AdS gravity

et al. 2011

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“…In [3][4][5], a manifestly covariant version of this method has been developed, and applied to strings and higher branes in Riemann-Cartan geometry. The method is model independent, as no action functional is specified.…”

Section: Introductionmentioning

confidence: 99%

D-branes from classical macroscopic strings

Vasilić

2012

Gen Relativ Gravit

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This paper is a sequel to the series of papers dedicated to model independent analysis of brane-like extended objects in curved backgrounds. In particular, we study cylindrical membranes wrapped around the extra compact dimension of a (D + 1)-dimensional Riemann-Cartan spacetime. The world-sheet equations are obtained from the universally valid conservation equations of the membrane stressenergy and spin tensors. In the limit of small extra dimension, the dimensionally reduced theory is obtained. The narrow membrane becomes an effective string characterized not only by tension and spin, but also by electric and dilaton charges. The boundary of such an effective string has been shown to live in less spacetime dimensions than its interior. Precisely, the string endpoints are trapped by the surfaces orthogonal to the gradient of the effective dilaton field. The string dynamics has been shown to follow from an action functional subject to the Dirichlet boundary conditions. This way, we have succeeded in obtaining a macroscopic D-brane analogue.

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“…Recently, in RS higher-dimensional framework, a lot of attention has been given to the study of optical activity of electromagnetic waves in a KR cosmological background [20]. The field strength tensor for KR field H M N Q is usually related with a Riemann-Cartan spacetime with torsion [21]. Recent studies at the RS scenario have associated the presence of the torsion with the KR field, which can exist together with gravity even outside of the brane [22].…”

Section: Introductionmentioning

confidence: 99%

Kalb–Ramond field localization on the Bloch brane

2013

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This work deals with new results on the Kalb-Ramond (KR) field localization in braneworld models. We consider a five-dimensional warped spacetime with an embedded 4D thick brane which is generated by two real scalar fields coupled with gravity (the so called Bloch brane). We find a KR field zero mode localized with the inclusion of the dilaton coupling. Analyzing the massive spectrum, we detected a series of resonant modes that arise from the solutions of the Schrödinger-like equation for KR field. The effects of the brane thickness and of the dilaton coupling over the resonance structures are determined. Such analysis is extended to the resonance lifetimes of the massive modes, allowing a better understanding on the localization mechanism of the model.

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Spinning branes in Riemann-Cartan spacetime

Cited by 10 publications

References 34 publications

Geometry and stability of spinning branes in AdS gravity

Geometry and stability of spinning branes in AdS gravity

D-branes from classical macroscopic strings

Kalb–Ramond field localization on the Bloch brane

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