First order semiclassical thermal string in the AdS spacetime

Belich, H.; Graca, E. L.; Santos, M.A. Couto dos; Vancea, Ion V.

doi:10.1088/1126-6708/2007/02/037

Cited by 8 publications

(10 citation statements)

References 38 publications

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“…Also, it could be used to study the thermal string in curved backgrounds, too, at least in some approximation in which there is a canonical quantization of the theory. We hope to report on this topic soon [20].…”

Section: Discussionmentioning

confidence: 97%

Thermal D-branes States from Superstrings in Light-Cone Gauge

Vancea¹

2007

Proceedings of Fifth International Conference on Mathematical Methods in Physics — PoS(IC2006)

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Section: Discussionmentioning

confidence: 97%

Thermal D-branes States from Superstrings in Light-Cone Gauge

Vancea¹

2007

Proceedings of Fifth International Conference on Mathematical Methods in Physics — PoS(IC2006)

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“…forN ω given in (54). The expression (60) is compatible with the Cardy formula for a central charge c = 1.…”

Section: The Bogoliubov Transformation Entropy Operator and Thermentioning

confidence: 65%

String in AdS black hole: A thermo field dynamic approach

et al. 2012

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Based on Maldacena's description of an eternal anti-de Sitter (AdS) black hole, we reassess the thermo field dynamics (TFD) formalism in the context of the AdS/CFT correspondence. The model studied here involves the maximally extended AdS-Schwarschild solution and two (noninteracting) copies of the conformal field theory (CFT) associated to the global AdS spacetime, along with an extension of the string by imposing natural gluing conditions in the horizon. We show that the gluing conditions in the horizon define a string boundary state which is identified with the TFD thermal vacuum, globally defined in the Kruskal extension of the AdS black hole. We emphasize the connection of this picture with unitary SUð1; 1Þ TFD formulation, and we show that information about the bulk and the conformal boundary is present in the SUð1; 1Þ parameters. Using the unitary SUð1; 1Þ TFD formulation, a canonical prescription for calculating the world sheet real time thermal Green's function is made, and the entropy associated with the entanglement of the two CFT's is calculated.

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“…We have used the semiclassical quantization method to derive the perturbative Dbrane boundary conditions in curved spacetime and in the presence of a constant KR-field. The strong gravitational field corresponds to the first order perturbation theory for which the boundary equations in arbitrary background metric have been derived in the equations ( 9) and (10). In the AdS background, the first order boundary conditions have been written in the Fock space of the free transversal string modes in (22)-(24).…”

Section: Conclussions and Discussionmentioning

confidence: 99%

Semiclassical bosonic D-brane boundary states in curved spacetime

Vancea

2009

Open Physics

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Abstract:In this paper we discuss the existence of quantum D-brane states in the strong gravitational field and in the presence of a constant Kalb-Ramond field. A semiclassical string quantization method in which the spacetime metric AB and the constant antisymmetric Kalb-Ramond field AB are treated exactly is employed. In this framework, the semiclassical D-branes are defined at the first order perturbation around the trajectory of the center-of-mass of a string. The set of equations the semiclassical D-branes must satisfy in a general strong gravitational field are given. These equations are solved in the A S background where it is shown that a D-brane coherent state exists if the operators that project the string fields onto the corresponding Neumann and Dirichlet directions satisfy a set of algebraic constraints. A second set of equations that should be satisfied by the projectors in order that the semiclassical state be compatible with the global structure of the D-brane are derived in the particle limit of a string in the torsionless A S background. 11.25.Db; 11.25.Uv. PACS (2008):

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First order semiclassical thermal string in the AdS spacetime

Cited by 8 publications

References 38 publications

Thermal D-branes States from Superstrings in Light-Cone Gauge

Thermal D-branes States from Superstrings in Light-Cone Gauge

String in AdS black hole: A thermo field dynamic approach

Semiclassical bosonic D-brane boundary states in curved spacetime

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