منابع مشابه
A note on fluxes in six-dimensional string theory backgrounds
We study the structure of warped compactifications of type IIB string theory to six space–time dimensions. We find that the most general four-manifold describing the internal dimensions is conformal to a Kähler manifold, in contrast with the heterotic case where the four-manifold must be conformally Calabi–Yau. 2004 Elsevier B.V. All rights reserved.
متن کاملA note on spin two fields in curved backgrounds
We reconsider the consistency constraints on a free massless symmetric, rank 2, tensor field in a background and confirm that they uniquely require it to be the linear deviation about (cosmological) Einstein gravity. Neither adding non-minimal higher derivative terms nor changing the gauge transformations by allowing terms non-analytic in the cosmological constant alters this fact.
متن کاملA note on spin-2 fields in curved backgrounds
We reconsider the consistency constraints on a free massless symmetric rank 2 tensor field in a background and confirm that they uniquely require it to be the linear deviation about (cosmological) Einstein gravity. Neither adding non-minimal higher derivative terms nor changing the gauge transformations by allowing terms non-analytic in the cosmological constant alters this fact. PACS numbers: ...
متن کاملPancake bouncing on superhydrophobic surfaces
Engineering surfaces that promote rapid drop detachment1,2 is of importance to a wide range of applications including anti-icing3-5, dropwise condensation6, and self-cleaning7-9. Here we show how superhydrophobic surfaces patterned with lattices of submillimetre-scale posts decorated with nano-textures can generate a counter-intuitive bouncing regime: drops spread on impact and then leave the s...
متن کاملA Note on D–brane — Anti–D–brane Interactions in Plane Wave Backgrounds
We study aspects of the interaction between a D–brane and an anti-D–brane in the maximally supersymmetric plane wave background of type IIB superstring theory, which is equipped with a mass parameter μ. An early such study in flat spacetime (μ = 0) served to sharpen intuition about D–brane interactions, showing in particular the key role of the “stringy halo” that surrounds a D–brane. The halo ...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2018
ISSN: 2470-0010,2470-0029
DOI: 10.1103/physrevd.97.103518