Results 1 to 10 of about 1,812,452 (281)
Physical Review D, 2002 When a potential for a scalar field has two local minima there arise spherical shell-type solutions of the classical field equations due to gravitational attraction. We establish such solutions numerically in a space which is asymptotically de Sitter.
Hosotani, Y. +3 more
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Black shells and naked shells [PDF]
International Journal of Geometric Methods in Modern Physics, 2021 In this paper, we study the collapse of a thin dust shell from the point of view of the horizon dynamics. We identify the critical surfaces at which time and space coordinates interchange their roles and investigate their properties by using the formalism of trapped surfaces.
Walter Pulido, Hernando Quevedo
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Physical Review Letters, 2004 4 pages in revtex format, 5 figures are ...
Wittel, Falk +3 more
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Justice (Vol. 10, Iss. 5) [PDF]
, 1928 v.18:suppl ...
San Diego Shell Club +1 more
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International Journal of Geometric Methods in Modern Physics, 2004 We define on-shell symmetries and characterize them for Lagrangian systems. The terms appearing in the variation of the Poincaré–Cartan form, which vanish because of field equations, are found to be strongly constrained if the space of solutions has to be preserved.
FATIBENE, Lorenzo +2 more
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Shell‐by‐Shell Functionalization of Inorganic Nanoparticles [PDF]
Chemistry – A European Journal, 2020 AbstractThe current state of the hierarchical chemical functionalization of inorganic nanoparticles (NPs) by shell‐by‐shell (SbS)‐assembly of organic layers around the NP cores is summarized. This supramolecular functionalization concept is based on two steps: 1) the covalent grafting of a first ligand–shell consisting of, for example, long chain ...
Lisa M. S. Stiegler +2 more
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Sub-20 nm Core-Shell-Shell Nanoparticles for Bright Upconversion and Enhanced Förster Resonant Energy Transfer. [PDF]
, 2019 Upconverting nanoparticles provide valuable benefits as optical probes for bioimaging and Förster resonant energy transfer (FRET) due to their high signal-to-noise ratio, photostability, and biocompatibility; yet, making nanoparticles small yields a ...
Alivisatos, A Paul +9 more
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From Shell Logs to Shell Scripts [PDF]
, 2001 Analysing the use of a Unix command shell is one of the classic applications in the domain of adaptive user interfaces and user modelling. Instead of trying to predict the next command from a history of commands, we automatically produce scripts that automate frequent tasks. For this we use an ILP association rule learner.
Jacobs, Nico, Blockeel, Hendrik
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Tachyon condensation and off-shell gravity/gauge duality [PDF]
, 2006 We investigate quasilocal tachyon condensation by using gravity/gauge duality. In order to cure the IR divergence due to a tachyon, we introduce two regularization schemes: AdS space and a d=10 Schwarzschild black hole in a cavity.
Adams A. +6 more
core +1 more source
Modeling of primary dendrite arm spacing variations in thin-slab casting of low carbon and low alloy steels [PDF]
, 2012 Solidification structure of a High Strength Low Alloy (HSLA) steel, in terms of dendrite arm spacing distribution across the shell thickness, is studied in a breakout shell from a thin-slab caster at Tata Steel in IJmuiden.
B Santillana +10 more
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