Results 71 to 80 of about 32,600 (191)

Signal and noise in helioseismic holography

open access: yes, 2018
Helioseismic holography is an imaging technique used to study heterogeneities and flows in the solar interior from observations of solar oscillations at the surface. Holograms contain noise due to the stochastic nature of solar oscillations. We provide a
Barucq, Hélène   +4 more
core   +1 more source

Conventional volume holography for unconventional Airy beam shapes

open access: yesOptics Express, 2018
Utilizing multiplexed volume holography, a single optical element, enabling to shape structural variants of non-diffracting Airy wavefronts, from one-dimensional Airy mode to unconventional Airy modes such as vortex Airy and quad Airy modes, has been experimentally realized.
Sunil, Vyas, Yu Hsin, Chia, Yuan, Luo
openaire   +2 more sources

Area Law Micro-State Entropy from Criticality and Spherical Symmetry

open access: yes, 2017
It is often assumed that the area law of micro-state entropy and the holography are intrinsic properties exclusively of the gravitational systems, such as black holes. We construct a non-gravitational model that exhibits an entropy that scales as area of
Dvali, Gia
core   +1 more source

Some information theoretic aspects of de-Sitter holography

open access: yesJournal of High Energy Physics, 2020
Built on our observation that entangling surfaces of the boundary field theory are great co-dimension one spheres in the context of DS/dS correspondence, we study some information theoretic quantities of the field theory dual intensively using ...
Hao Geng
doaj   +1 more source

Properties of Confinement in Holography

open access: yes, 2015
We review certain properties of confinement with added focus on the ones we study with holography. Then we discuss observables whose unique behavior can indicate the presence of confinement. Using mainly the Wilson loop in the gauge/gravity formalism, we
Giataganas, Dimitrios
core   +1 more source

Heat engines for scale invariant systems dual to black holes

open access: yesCommunications Physics
According to holography, a black hole is dual to a thermal state in a strongly coupled quantum system. One of the best-known examples of holography is the Anti-de Sitter/Conformal Field Theory (AdS/CFT) correspondence.
Nikesh Lilani, Manus R. Visser
doaj   +1 more source

Brick Walls and AdS/CFT

open access: yes, 2014
We discuss the relationship between the bulk-boundary correspondence in Rehren's algebraic holography (and in other 'fixed-background' approaches to holography) and in mainstream 'Maldacena AdS/CFT'.
Bernard S. Kay   +26 more
core   +1 more source

D3 branes in a Melvin universe: a new realm for gravitational holography

open access: yes, 2009
The decoupling limit of a certain configuration of D3 branes in a Melvin universe defines a sector of string theory known as Puff Field Theory (PFT) - a theory with non-local dynamics but without gravity. In this work, we present a systematic analysis of
D. J. Gross   +5 more
core   +1 more source

Ground State Instability in Non-relativistic QFT and Euler-Heisenberg Lagrangian via Holography

open access: yes, 2018
We study the ground state instability of a strongly coupled QFT with the $z=2$ Schr\"odinger symmetry in a constant electric field using probe branes holography.
Vahedi, Ali
core   +1 more source

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