Results 71 to 80 of about 4,049 (195)

Thermodynamics in Curved Space-Time and Its Application to Holography

open access: yesEntropy, 2015
The thermodynamic behaviors of a system living in a curved space-time are different from those of a system in a flat space-time. We have investigated the thermodynamics for a system consisting of relativistic massless bosons.
Yong Xiao, Li-Hua Feng, Li Guan
doaj   +1 more source

Universal Entanglement and an Information‐Complete Quantum Theory

open access: yesAdvanced Physics Research, EarlyView.
This Perspective summarize an informationcomplete quantum theory which describes a fully quantum world without any classical systems and concepts. Here spacetime/gravity, having to be a physical quantum system, universally entangles matter (matter fermions and their gauge fields) as an indivisible trinity, and encodes information‐complete physical ...
Zeng‐Bing Chen
wiley   +1 more source

Towards non-AdS holography via the long string phenomenon

open access: yesJournal of High Energy Physics, 2018
The microscopic description of AdS space obeys the holographic principle in the sense that the number of microscopic degrees of freedom is given by the area of the holographic boundary.
Sam van Leuven   +2 more
doaj   +1 more source

Anthropic principle favours the holographic dark energy [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2005
We discuss the anthropic principle when applied to the holographic dark energy. We find that if the amplitude of the density fluctution is variable, the holographic dark energy fares better than the cosmological constant. More generally, the anthropic predictions agree better with observation for dark energy with $w_\d=p_\d/ _\d$ decreasing over time.
Huang, Qing-Guo, Li, Miao
openaire   +2 more sources

One Metasurface for Four‐Channel Terahertz Wavefront Manipulation Based on Vanadium Dioxide

open access: yesAdvanced Physics Research, EarlyView.
This article presents a thermally reconfigurable metasurface utilizing vanadium dioxide (VO2) to dynamically switch between four independent wavefront‐manipulation channels. By synergizing geometric and propagation phases, the platform enables spin‐decoding for circularly polarized waves and polarization multiplexing for linearly polarized waves ...
Zhaofeng Yang   +7 more
wiley   +1 more source

On the Thermodynamic Origin of Gravitational Force by Applying Spacetime Entanglement Entropy and the Unruh Effect

open access: yesEntropy, 2019
We consider the thermodynamic origin of the gravitational force of matter by applying the spacetime entanglement entropy and the Unruh effect originating from vacuum quantum fluctuations.
Shujuan Liu, Hongwei Xiong
doaj   +1 more source

3D bioprinting in oral and craniomaxillofacial tissue regeneration: Progress, challenges, and future directions

open access: yesBMEMat, EarlyView.
This paper summarized the application of 3D bioprinting in the regeneration of various tissues in the oral and craniomaxillofacial fields, including the required biomaterials and printing techniques. Abstract Oral and craniomaxillofacial tissues are essential for maintaining oral functions, including respiration, mastication, swallowing, and speech ...
Huilu Zhan   +7 more
wiley   +1 more source

Transforming Brain Health With Neurotechnology Convergence (Part II): Intelligent Neurointervention Systems for Neurological Disorders

open access: yesBrain Health, EarlyView.
ABSTRACT Neurological disorders represent a critical domain within global health, necessitating advanced interventions to address complex pathologies such as tumors, functional disorders, and cerebrovascular diseases. Despite the proven benefits of early intervention, current treatment paradigms face significant challenges: (1) limited precision in ...
Qing Ye   +14 more
wiley   +1 more source

Holographic Screens in Ultraviolet Self-Complete Quantum Gravity

open access: yesAdvances in High Energy Physics, 2014
This paper studies the geometry and the thermodynamics of a holographic screen in the framework of the ultraviolet self-complete quantum gravity. To achieve this goal we construct a new static, neutral, nonrotating black hole metric, whose outer (event ...
Piero Nicolini, Euro Spallucci
doaj   +1 more source

Wearable fabric electronics for sensing, memory and neuromorphic computing applications

open access: yesFlexMat, EarlyView.
Overview of textile electronic devices for sensing, memory and neuromorphic computing applications. Abstract With the advent of the big data era, traditional Von Neumann architecture is facing an energy consumption bottleneck due to separated memory and computing units, inspiring the research of brain‐like neuromorphic computing devices for artificial ...
Bo Sun, Lin Lu, Jialin Meng, Tianyu Wang
wiley   +1 more source

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