output
19922026
most citedf(T) teleparallel gravity and cosmology

1.5k citations

Showing 2009 · hep-thShow all

12 papers · 2 filters

hep-th2009★ 7 cited

Small Mass Expansion of Functional Determinants on the Generalized Cone

Guglielmo Fucci, Klaus Kirsten

In this paper we compute the small mass expansion for the functional determinant of a scalar Laplacian defined on the bounded, generalized cone. In the framework of zeta function r…

hep-th2009

Scalar Casimir Energies for Separable Coordinate Systems: Application to Semi-transparent Planes in an Annulus

J. Wagner, K. A. Milton, K. Kirsten

We derive a simplified general expression for the two-body scalar Casimir energy in generalized separable coordinate systems. We apply this technique to the case of radial semi-tra…

hep-th2009★ 56 cited

Black holes and stars in Horava-Lifshitz theory with projectability condition

Jared Greenwald, Antonios Papazoglou, Anzhong Wang

We systematically study spherically symmetric static spacetimes filled with a fluid in the Horava-Lifshitz theory of gravity with the projectability condition, but without the deta…

hep-th2009★ 32 cited

Casimir Effect for a Semitransparent Wedge and an Annular Piston

Kimball A. Milton, Jef Wagner, Klaus Kirsten

We consider the Casimir energy due to a massless scalar field in a geometry of an infinite wedge closed by a Dirichlet circular cylinder, where the wedge is formed by -function…

hep-th2009★ 2 cited

On the Gravitationally Induced Schwinger Mechanism

Guglielmo Fucci, Ivan G. Avramidi

In this paper we will present very recent results obtained in the ambit of quantum electrodynamics in curved spacetime. We utilize a newly developed non-perturbative heat kernel as…

hep-th2009★ 72 cited

Scalar field perturbations in Horava-Lifshitz cosmology

Anzhong Wang, David Wands, Roy Maartens

We study perturbations of a scalar field cosmology in Horava-Lifshitz gravity, adopting the most general setup without detailed balance but with the projectability condition. We de…

hep-th2009★ 156 cited

Cosmological perturbations in Horava-Lifshitz theory without detailed balance

Anzhong Wang, Roy Maartens

In the Horava-Lifshitz theory of quantum gravity, two conditions -- detailed balance and projectability -- are usually assumed. The breaking of projectability simplifies the theory…

hep-th2009★ 129 cited

Thermodynamics and classification of cosmological models in the Horava-Lifshitz theory of gravity

Anzhong Wang, Yumei Wu

We study thermodynamics of cosmological models in the Horava-Lifshitz theory of gravity, and systematically investigate the evolution of the universe filled with a perfect fluid th…

hep-th2009★ 6 cited

Non-Perturbative One-Loop Effective Action for Electrodynamics in Curved Spacetime

Guglielmo Fucci

In this paper we explicitly evaluate the one-loop effective action in four dimensions for scalar and spinor fields under the influence of a strong, covariantly constant, magnetic f…

hep-th2009★ 70 cited

Kaluza-Klein models as pistons

Klaus Kirsten, S. A. Fulling

We consider the influence of extra dimensions on the force in Casimir pistons. Suitable analytical expressions are provided for the Casimir force in the range where the plate dista…

hep-th2009★ 8 cited

Feynman Diagrams, Differential Reduction, and Hypergeometric Functions

M. Yu. Kalmykov, V. V. Bytev, Bernd A. Kniehl +2

We will present some (formal) arguments that any Feynman diagram can be understood as a particular case of a Horn-type multivariable hypergeometric function. The advantages and dis…

hep-th2009★ 4 cited

Spacetime Singularities in String and its Low Dimensional Effective Theory

Preet Sharma, Andreas Tziolas, Anzhong Wang +1

Spacetime singularities are studied in both the -dimensional string theory and its -dimensional effective theory, obtained by the Kaluza-Klein compactification. It is found…