Results 141 to 150 of about 28,100 (252)

Deep learning bimodal frequency-selective digital holography by using a confocal dual-beam setup

New Journal of Physics
This paper proposes a bimodal digital holography technique based on deep learning, marking the first application of neural networks in frequency-selective holographic reconstruction.
Wanbin Zhang, Yanchen Ren, Yijian Feng, Xiangdong Sun, Jiangnan Hu, Weiyong Xing, Zhanjun Zhang   +6 more
doaj   +1 more source

Noninvasive Intelligent Brain‐Metasurface System for Real‐Time Electromagnetic Wave Manipulation

Nanophotonics, Volume 15, Issue 13, 13 July 2026.
A noninvasive intelligent brain–computer interface (BCI) is integrated with a reconfigurable metasurface to establish a direct neural‐to electromagnetic transduction pathway for real time, multimodal wave control. By combining convolutional‐neural‐network‐based decoding of motor‐imagery electroencephalography (EEG) signals with threshold‐based ...
Xiao Hai, Ruiyang Shen, Xiaoyi Wang, Guo‐Min Yang   +3 more
wiley   +1 more source

braneworld cosmology and holography [PDF]

, 2002
This thesis is devoted to studying two important aspects of braneworld physics: their cosmology and their holography. We examine the Einstein equations induced on a general (n - 2)-brane of arbitrary tension, embedded in some n-dimensional bulk.
Padilla, Antonio
core  

Algebraic Holography

Annales Henri Poincaré, 2000
A rigorous (and simple) proof is given that there is a one-to-one correspondence between causal anti-deSitter covariant quantum field theories on anti-deSitter space and causal conformally covariant quantum field theories on its conformal boundary. The correspondence is given by the explicit identification of observables localized in wedge regions in ...
openaire   +4 more sources

Noise reduction of electron holography observations for a thin-foiled Nd-Fe-B specimen using the wavelet hidden Markov model

Applied Microscopy
In this study, we investigate the effectiveness of noise reduction in electron holography, based on the wavelet hidden Markov model (WHMM), which allows the reasonable separation of weak signals from noise.
Sujin Lee, Yoshihiro Midoh, Yuto Tomita, Takehiro Tamaoka, Mitsunari Auchi, Taisuke Sasaki, Yasukazu Murakami   +6 more
doaj   +1 more source

Toward a consistent definition of holographic entanglement entropy in de Sitter space

Journal of High Energy Physics
We 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

Spin holography [PDF]

Physical Review Letters, 1994
, Timmermans, , Trammell, , Hannon
openaire   +2 more sources

Decimeter-depth and polarization addressable color 3D meta-holography

Nature Communications
Fueled 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, Yi-Long Li, Xin-Ru Zheng, Ruo-Nan Ji, Xin Xie, Kun Song, Fan-Chuan Lin, Nan-Nan Li, Zhao Jiang, Chao Liu, Yi-Wei Zheng, Shao-Wei Wang, Wei Lu, Bao-Hua Jia, Qiong-Hua Wang   +14 more
doaj   +1 more source

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
core  

Holography as homotopy

Journal of High Energy Physics
Abstract 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, Ersoy, Talha, Hohm, Olaf   +2 more
openaire   +4 more sources