Results 141 to 150 of about 28,019 (252)
Photochromic materials for holography: issues and constraints
, 2012 Photochromic materials can find application in holography, thanks to the peculiar possibility to change reversibly their transparency in the visible (amplitude holography) and their refractive index in the near infrared region (phase holography).
PARIANI, GIORGIO +9 more
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Toward a consistent definition of holographic entanglement entropy in de Sitter space
Journal of High Energy PhysicsWe investigate a new definition of holographic entanglement entropy in the framework of static patch holography for de Sitter space. Using the replica trick and twist operator formalism, we derive an entropy functional in dS3 expressed through de Sitter ...
Shan-Ming Ruan, Yu-ki Suzuki
doaj +1 more source
Holography, relativity and the spooky ellipsoids
, 2006 The further away from a house we move, the smaller it appears. We could say that we are in the centre of a "sphere of observation", which must reach the house before we can see it. The larger that sphere is, the smaller the house appears. This is natural
Abramson, Nils,
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Extended depth of field with absolute position detection in multi-wavelength digital holography
, 2022 We present a novel approach for detecting the absolute position of surfaces in multi-wavelength holography. We extent the depth of field from ~0.08 mm to ~3 mm and get the absolute position with accuracies better than 10 ...
Carl, Daniel +4 more
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, 2009 Art. DWD6A fast auto calibration method for (lensless) multi-wavelength digital holography with arbitrary temporal phase-shifts is presented. The calibration algorithm is simple to calculate and needs just one additional image acquisition per ...
Fratz, M. +4 more
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Decimeter-depth and polarization addressable color 3D meta-holography
Nature CommunicationsFueled by the rapid advancement of nanofabrication, metasurface has provided unprecedented opportunities for 3D holography. Large depth 3D meta-holography not only greatly increases information storage capacity, but also enables distinguishing of the ...
Di Wang +14 more
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Holography and Emergence [PDF]
, 2013 In this paper, I discuss one form of the idea that spacetime and gravity might ‘emerge’ from quantum theory, i.e. via a holographic duality, and in particular via AdS/CFT duality.
Teh, Nicholas
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Journal of High Energy PhysicsAbstract We give an interpretation of holography in the form of the AdS/CFT correspondence in terms of homotopy algebras. A field theory such as a bulk gravity theory can be viewed as a homotopy Lie or L ∞ algebra.
Chiaffrino, Christoph +2 more
openaire +4 more sources
An Application of Laser Holography to Measurement of Particle Location and Velocity [PDF]
, 2000 This paper describes an application of laser holography and image processing for measuring partic1e locations. It is known that the reconstructed images of objects expand in the depth direction of the object beam, when laser holography is applied to ...
太田, 淳一 +2 more
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