نتایج جستجو برای: holographic

تعداد نتایج: 15158  

1999
M. G. Ivanov I. V. Volovich

A simple derivation of the bound on entropy is given and the holographic principle is discussed. We estimate the number of quantum states inside space region on the base of uncertainty relation. The result is compared with the Bekenstein formula for entropy bound, which was initially derived from the generalized second law of thermodynamics for black holes. The holographic principle states that...

2001
M. G. Ivanov I. V. Volovich

A simple derivation of the bound on entropy is given and the holographic principle is discussed. We estimate the number of quantum states inside space region on the base of uncertainty relation. The result is compared with the Bekenstein formula for entropy bound, which was initially derived from the generalized second law of thermodynamics for black holes. The holographic principle states that...

2006
M. R. Setare

We employ the holographic model of interacting dark energy to obtain the equation of state for the holographic energy density in non-flat (closed) universe enclosed by the event horizon measured from the sphere of horizon named L.

2001
Matthew Kleban John McGreevy

Gravitational time delay in asymptotically Anti de Sitter spaces has consequences for holographic duality. In this brief note, we discuss implications for precursors in the field theory, and formulate a condition on spacetimes which admit a holographic dual

Journal: :Optics express 2006
Yohai Roichman Ilias Cholis David G Grier

The holographic optical trapping technique creates arbitrary three-dimensional configurations of optical traps, each with individually specified characteristics. Holographic modification of the individual traps' wavefronts can transform conventional point-like optical tweezers into traps with different structures and properties, and can position them independently in three dimensions. Here, we ...

2005
Qingsheng He Yunbo Guo Yi Liao Liangcai Cao Guodong Liu Guofan Jin Yunlong Sheng Dahsiung Hsu Chongxiu Yu Byoungho Lee

The holographic properties of doubly doped lithium niobate crystals with Indium have been investigated. It is found that doping slight Indium concentration (0.5mol%) in LiNbO3:In, Fe crystal can efficiently increase the sensitivity with small dynamic range changing. To improve the whole holographic properties of LiNbO3 crystal, LiNbO3:In, Fe with ideal doping concentrations and a new photorefra...

Journal: :IJWIN 1997
Mohammad Reza Pakravan E. Simova Mohsen Kavehrad

Diffused infrared transmission is one of the preferred techniques used in indoor wireless communications. Tolerance to shadowing and a lack of alignm ent requirements are among the many advantages offered by this technique compared to the line-of-sight techniques. However, it has its disadvantages, namely high path loss and multipath dispersion. The limitation imposed by eye-safety requirements...

2008
Xin Zhang

When taking the holographic principle into account, the vacuum energy will acquire dynamical property that its equation of state is evolving. The current available observational data imply that the holographic vacuum energy behaves as quintom-type dark energy. We adopt the viewpoint of that the scalar field models of dark energy are effective theories of an underlying theory of dark energy. If ...

Journal: :Optics express 2016
Yongjun Lim Keehoon Hong Hwi Kim Hyun-Eui Kim Eun-Young Chang Soohyun Lee Taeone Kim Jeho Nam Hyon-Gon Choo Jinwoong Kim Joonku Hahn

We demonstrate a tabletop holographic display system for simultaneously serving continuous parallax 3.2-inch 360-degree three-dimensional holographic image content to multiple observers at a 45-degree oblique viewing circumference. To achieve this, localized viewing windows are to be seamlessly generated on the 360-degree viewing circumference. In the proposed system, four synchronized high-spe...

2009
Xin Zhang

When taking the holographic principle into account, the vacuum energy will acquire dynamical property that its equation of state is evolving. The current available observational data imply that the holographic vacuum energy behaves as quintom-type dark energy. We adopt the viewpoint of that the scalar field models of dark energy are effective theories of an underlying theory of dark energy. If ...

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