Results 91 to 100 of about 101,447 (298)
Journal of High Energy Physics, 2004 The holographic interpretation is a useful tool to describe 5D field theories in a 4D language. In particular it allows one to relate 5D AdS theories with 4D CFTs. We elaborate on the 5D/4D dictionary for the case of fermions in AdS$_5$ with boundaries.
CONTINO, ROBERTO, Pomarol, Alex
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Atomic‐Scale Investigation of an Asymmetric Strontium Titanate Grain Boundary
Advanced Materials Interfaces, EarlyView.The structure and composition of a faceted asymmetric grain boundary in strontium titanate is investigated by scanning transmission electron microscopy (STEM), atom probe tomography (APT), and density functional theory (DFT). APT and STEM reveal a strong Sr depletion at the grain boundary and possible variations in Ti concentration between facets.
Janina Malin Rybak +8 more
wiley +1 more source
Direct Inversion of Digital 3D Fraunhofer Holography Maps
, 2015 The Differential Fourier Holography (DFH) gives an exact mathematical solution of the inverse problem of diffraction in the Fraunhofer regime. After the first publication [1] the Differential Fourier Holography was successfully applied in many ...
Förster, Eckhart, Podorov, Sergey G.
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Physical Review D, 1999 We study a topological field theory in four dimensions on a manifold with boundary. A bulk-boundary interaction is introduced through a novel variational principle rather than explicitly. Through this scheme we find that the boundary values of the bulk fields act as external sources for the boundary theory.
Viqar Husain, Sebastian Jaimungal
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Dynamic and Reconfigurable Acoustic Fields Enabled by Morphing Fluidic Holographic Lenses
Advanced Materials Technologies, EarlyView.Real‐time reconfiguration of the acoustic field is achieved using fluidic holographic lenses that dynamically morph their structure via controlled volume changes. This compact, programmable approach eliminates the need for active elements like phased arrays, enabling high‐resolution, adaptive wavefront control with enhanced flexibility for diverse ...
Moustafa Sayed Ahmed, Shima Shahab
wiley +1 more source
Acoustic Wavefront Shaping Using Ultrahigh Phase Resolution Metamaterial
Advanced Materials Technologies, EarlyView.A Bilateral Symmetrical T‐shaped (BST) acoustic metamaterial unit cell capable of achieving a high phase resolution of π/36 radians at 8000 Hz is introduced. The approach enables tunable wavefront control through simple rotational adjustment of BST, which offers an alternative to the conventional complex metamaterials unit cell design and a way for ...
Sourabh Dogra +4 more
wiley +1 more source
Holography of information in AdS/CFT
Journal of High Energy Physics, 2022 The principle of the holography of information states that in a theory of quantum gravity a copy of all the information available on a Cauchy slice is also available near the boundary of the Cauchy slice.
Robert de Mello Koch, Garreth Kemp
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, 1999 We study the conditions under which atomic condensates can be used as a recording media and then suggest a reading scheme which allows to reconstruct an object with atomic reading beam.
A. Soroko +21 more
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Advanced Optical Materials, EarlyView.This review explores how engineered porous materials enhance surface‐enhanced Raman scatering (SERS) spectroscopy by synergizing analyte enrichment and electromagnetic field amplification. It is systematically evaluated four classes, nanoporous metals, plasmonic polymers, mesoporous silica, and metal‐organic frameworks (MOFs), highlighting their unique
Miguel A. Correa‐Duarte +2 more
wiley +1 more source