Results 61 to 70 of about 84,153 (250)

Holographic Protection of Chronology in Universes of the Godel Type [PDF]

, 2002
We analyze the structure of supersymmetric Godel-like cosmological solutions of string theory. Just as the original four-dimensional Godel universe, these solutions represent rotating, topologically trivial cosmologies with a homogeneous metric and ...
A. A. Tseytlin, A. K. Raychaudhuri, A. Strominger, B. Carter, C. A. R. Herdeiro, Edward K. Boyda, F. J. Tipler, G. W. Gibbons, J. Michelson, J. P. Gauntlett, K. Gödel, L. Dyson, L. Dyson, L. Susskind, M. Blau, M. J. Rebouças, M. M. Som, M. Rooman, P. Klepáč, Petr Hořava, R. Bousso, R. Bousso, R. Bousso, R. Güven, S. Chandrasekhar, S. W. Hawking, Surya Ganguli, T. Banks, Uday Varadarajan, V. Balasubramanian, W. J. van Stockum   +30 more
core   +2 more sources

Vision‐Augmented Wearable Interfaces: Bioinspired Approaches for Realistic AI‐Human‐Machine Interaction

Advanced Materials Technologies, EarlyView.
This review presents recent progress in vision‐augmented wearable interfaces that combine artificial vision, soft wearable sensors, and exoskeletal robots. Inspired by biological visual systems, these technologies enable multimodal perception and intelligent human–machine interaction.
Jihun Lee, Gwuidong Ryu, Kisoo Kim, Feng Xu, Won Gu Lee   +4 more
wiley   +1 more source

Weak Gravity Conjecture and Holographic Dark Energy Model with Interaction and Spatial Curvature [PDF]

, 2010
In the paper, we apply the weak gravity conjecture to the holographic quintessence model of dark energy. Three different holographic dark energy models are considered: without the interaction in the non-flat universe; with interaction in the flat ...
A. G. Riess, A. Sen, C. Vafa, Cheng-Yi Sun, D. N. Spergel, D. N. Spergel, G.'t Hooft, H. Wei, K. Abazajian, K. Abazajian, L. Susskind, M. Li, N. Arkani-Hamed, Q. G. Huang, Q. G. Huang, Q. G. Huang, S. M. Carroll, S. Perl-mutter, V. Sahni, V. Sahni, X. Chen, X. Wu, Y. Z. Ma   +22 more
core   +1 more source

Quasi‐Single‐Mode Polaritonic Crystal for Hyperbolic Phonon‐Polaritons

Advanced Optical Materials, EarlyView.
Near‐field study of the polaritonic Fourier crystal with α‐MoO3 reveals that the hyperbolic phonon‐polaritons within the Type‐I Reststrahlen band may form a quasi‐single‐mode Bloch wave where only the fundamental mode propagates in the crystal. Our results demonstrate the realization of a quasi‐single‐mode regime for the inherently multimode hyperbolic
Sergey G. Menabde, Yongjun Lim, Alexey Y. Nikitin, Pablo Alonso‐González, Jacob T. Heiden, Heerin Noh, Seungwoo Lee, Min Seok Jang   +7 more
wiley   +1 more source

Coexistence and competition of ferromagnetism and p-wave superconductivity in holographic model

, 2014
By combining a holographic p-wave superconductor model and a holographic ferromagnetism model, we study the coexistence and competition of ferromagnetism and p-wave superconductivity.
Cai, Rong-Gen, Yang, Run-Qiu
core   +1 more source

Holographic zero sound at finite temperature in the Sakai-Sugimoto model [PDF]

, 2014
In this paper, we study the fate of the holographic zero sound mode at finite temperature and non-zero baryon density in the deconfined phase of the Sakai-Sugimoto model of holographic QCD.
A Ballon-Bayona, A Dymarsky, A Gorsky, A Parnachev, B-H Lee, BA Burrington, Brandon S. DiNunno, C Hoyos-Badajoz, CAB Bayona, CAB Bayona, CP Herzog, D Nickel, D Yamada, D-W Pang, DK Brattan, DT Son, DT Son, DT Son, E Witten, F Preis, G Lifschytz, G Mandal, G Mandal, H Liu, H Ooguri, IR Klebanov, JM Maldacena, Juan F. Pedraza, K Jensen, K-Y Kim, K-Y Kim, K-Y Kim, K-Y Kim, L-Y Hung, LD Landau, M Ammon, M Edalati, M Edalati, M Goykhman, M Ihl, M Ihl, M Kaminski, M Kulaxizi, M Kulaxizi, M Rozali, M Sohaib Alam, Matthias Ihl, MS Alam, N Horigome, N Jokela, N Jokela, N Jokela, Niko Jokela, NJ Evans, O Aharony, O Aharony, O Bergman, O Bergman, O Bergman, P Dey, RA Davison, RA Davison, S Caron-Huot, S Kobayashi, S Kuperstein, S-J Sin, SS Gubser, T Sakai, T Sakai, VG Filev   +69 more
core   +3 more sources

Bridging Optical and Mechanical Metamaterial/Metasurface Realms Toward Integrated Meta‐Systems

Advanced Optical Materials, EarlyView.
This perspective describes the rise of metamaterials in the field of materials science, specifically with optical and mechanical functionality. Fundamentals of both optical and mechanical metamaterials are discussed with a review of state‐of‐the‐art metamaterial science.
Justin Brackenridge, Jaejun Lee, Vladimir V. Tsukruk   +2 more
wiley   +1 more source

Photochromic Diarylethene‐doped SU‐8 for Rewritable Optics and Integrated Photonic Switching

Advanced Optical Materials, EarlyView.
A CMOS‐compatible photochromic host–guest material platform is realized by incorporating diarylethene molecules into SU‐8 photoresist. Reversible photoisomerization enables light‐programmable optical absorption, allowing rewritable optical patterning and port‐selective attenuation in integrated waveguides.
Yao Chang, Hsiu‐Hui Chen, Chun‐Ta Wang   +2 more
wiley   +1 more source

A Tracker Solution for a Holographic Dark Energy Model

, 2006
We investigate a kind of holographic dark energy model with the future event horizon the IR cutoff and the equation of state -1. In this model, the constraint on the equation of state automatically specifies an interaction between matter and dark energy.
't Hooft G., Alam U., Coles P., Enqvist K., Guberina B., Guo Z. K., Huang Q. G., Huang Q. G., Huang Q. G., HUI LI, Myrhvold N. P., Perlmutter S., Shapiro I. L., Steinhardt P. J., YUAN-ZHONG ZHANG, ZONG-KUAN GUO   +15 more
core   +1 more source

Simultaneous Measurement of Thermal Expansion and Thermo‐Optic Effect in Solids Using Terahertz Spectroscopy

Advanced Optical Materials, EarlyView.
Thermal expansion and the thermo‐optic effect in solids are closely coupled, reflecting concurrent changes in mass density and polarizability. Using echo‐resolved THz spectroscopy, we simultaneously determine sub‐micrometer thermal expansion and complex refractive index changes of MgO and Al2O3 from 10–325 K. The analysis yields both the coefficient of
Nicolas S. Beermann, Andreas Gebauer, Savio Fabretti, Wentao Zhang, Hassan A. Hafez, Dmitry Turchinovich   +5 more
wiley   +1 more source