Results 91 to 100 of about 84,009 (270)

Holographic RG-flows and Boundary CFTs

, 2012
Solutions of $(d+1)$-dimensional gravity coupled to a scalar field are obtained, which holographically realize interface and boundary CFTs. The solution utilizes a Janus-like $\mathrm{AdS}_d$ slicing ansatz and corresponds to a deformation of the CFT by ...
D. Z. Freedman, E. Witten, E. Witten, J. M. Maldacena, Joshua Samani, Michael Gutperle   +5 more
core   +1 more source

Tunable Sound Absorption via Evanescent‐Wave Coupling in Asymmetric Bilayer Metasurfaces

Advanced Science, EarlyView.
Tunable sound absorption is realized through a bilayer metasurface system governed by evanescent‐wave coupling. This work demonstrates that such evanescent‐wave coupling provides a controllable scattering channel that destructively interferes with the specular reflection.
Pyung Sik Ma, Hyung Jin Lee
wiley   +1 more source

Studying the Recent Improvements in Holograms for Three-Dimensional Display

International Journal of Optics, 2014
Displayers tend to become three-dimensional. The most advantage of holographic 3D displays is the possibility to observe 3D images without using glasses. The quality of created images by this method has surprised everyone. In this paper, the experimental
Hamed Abbasi, Talie Zarei, Neda Jalali Farahani, Adeleh Granmayeh Rad   +3 more
doaj   +1 more source

Holographic aspects of three dimensional QCD from string theory

, 2010
We study two aspects of 3D QCD with massless fermions in a holographic set-up from string theory, based on D3/D7 branes; parity anomaly and baryons as baby Skyrmions.
A Karch, AJ Niemi, AN Redlich, AN Redlich, C Csáki, C Vafa, C Vafa, C Vafa, D Karabali, Deog Ki Hong, DK Hong, DK Hong, DK Hong, DK Hong, E Witten, E Witten, E Witten, E Witten, G Ferretti, G Ferretti, H Hata, Ho-Ung Yee, HR Grigoryan, J Alanen, J Babington, J Park, JL Davis, JM Maldacena, K Hashimoto, K Nawa, K-M Lee, M Cubrovic, M Fujita, M Kruczenski, M Kruczenski, O Aharony, RD Pisarski, RG Leigh, S Hong, S-J Rey, S-S Lee, SR Coleman, T Appelquist, T Appelquist, T Sakai, T Sakai   +45 more
core   +1 more source

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

Advanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Vincenzo Galdi   +4 more
wiley   +1 more source

Cosmic holographic bounds with UV and IR cutoffs

, 2005
We introduce the cosmic holographic bounds with two UV and IR cutoff scales, to deal with both the inflationary universe in the past and dark energy in the future. To describe quantum fluctuations of inflation on sub-horizon scales, we use the Bekenstein-
Bekenstein J. D., Brandenberger R. H., Gasperini M., Gibbons G. W., Horvat R., Hsu S. D., Keski-Vakkuri E., Li M., Myung Y. S., YUN SOO MYUNG   +9 more
core   +1 more source

Clinically Informed Intelligent Classification of Ovarian Cancer Cells by Label‐Free Holographic Imaging Flow Cytometry

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
Quantitative phase maps of single cells recorded in flow cytometry modality feed a hierarchical architecture of machine learning models for the label‐free identification of subtypes of ovarian cancer. The employment of a priori clinical information improves the classification performance, thus emulating the clinical application of liquid biopsy during ...
Daniele Pirone, Beatrice Cavina, Daniele Gaetano Sirico, Martina Mugnano, Vittorio Bianco, Lisa Miccio, Anna Myriam Perrone, Anna Maria Porcelli, Giuseppe Gasparre, Ivana Kurelac, Pasquale Memmolo, Pietro Ferraro   +11 more
wiley   +1 more source

Holographic Beam Measurements of the Canadian Hydrogen Intensity Mapping Experiment (CHIME)

The Astrophysical Journal
We present the first results of the holographic beam-mapping program for the Canadian Hydrogen Intensity Mapping Experiment (CHIME). We describe the implementation of a holographic technique as adapted for CHIME, and introduce the processing pipeline ...
Mandana Amiri, Arnab Chakraborty, Simon Foreman, Mark Halpern, Alex S Hill, Gary Hinshaw, T. L. Landecker, Joshua MacEachern, Kiyoshi W. Masui, Juan Mena-Parra, Nikola Milutinovic, Laura Newburgh, Anna Ordog, Ue-Li Pen, Tristan Pinsonneault-Marotte, Alex Reda, Seth R. Siegel, Saurabh Singh, Haochen Wang, Dallas Wulf, The CHIME Collaboration   +20 more
doaj   +1 more source

Holographic studies of quasi-topological gravity

, 2010
Quasi-topological gravity is a new gravitational theory including curvature-cubed interactions and for which exact black hole solutions were constructed.
A Buchel, A Buchel, A Buchel, A Buchel, A Buchel, A Buchel, A Schwimmer, A Schwimmer, A Sinha, A Sinha, Aninda Sinha, C Imbimbo, C Teitelboim, D Anselmi, D Lovelock, D Lovelock, DM Hofman, DM Hofman, DT Son, DT Son, E Krotscheck, E Poppitz, E Poppitz, F Bigazzi, F-W Shu, G Arutyunov, G Policastro, GT Horowitz, GT Horowitz, H Liu, H Osborn, I Fouxon, I Gullu, J Alanen, J Boer de, J Boer de, J Erdmenger, JI Latorre, JM Maldacena, KM Case, M Blau, M Brigante, M Brigante, M Henneaux, M Henningson, M Henningson, M Jarvinen, MF Paulos, Miguel F. Paulos, MJ Duff, N Banerjee, N Banerjee, N Iqbal, O Aharony, R Brustein, R Fox, R Gregory, R-G Cai, R-G Cai, RC Myers, RC Myers, RC Myers, Robert C. Myers, S Nojiri, SR Beane, SS Gubser, T Banks, T Horowitz, U Gürsoy, U Gürsoy, V Alfaro de, VK Dobrev, X-H Ge, X-H Ge, XO Camanho, XO Camanho, Y Kats   +76 more
core   +1 more source

Design of Compact Liquid Crystal on Silicon Projection Optics Utilizing a Common Freeform Optical Path for Augmented Reality Displays

Advanced Intelligent Systems, EarlyView.
This study presents a compact freeform projection optics using dual wedge prisms for waveguide displays. Unlike previous designs that separate illumination and imaging paths, a freeform optical path integrates both. The system achieves a 32º field of view, 37.5 pixels per degree, and a total volume of less than 2 cm3.
Ximeng Wang, Dewen Cheng, Yuefan Shan, Da Wang, Tong Yang, Yongtian Wang   +5 more
wiley   +1 more source