scholarly journals Quantum particle production at sudden singularities

2008 ◽  
Vol 78 (12) ◽  
Author(s):  
John D. Barrow ◽  
Antonio B. Batista ◽  
Júlio C. Fabris ◽  
Stéphane Houndjo
Keyword(s):  
Particle Production ◽  
Quantum Particle

Radiation from moving mirrors and from black holes

1977 ◽  
Vol 356 (1685) ◽  
pp. 237-257 ◽  
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Black Holes ◽  
Particle Production ◽  
Quantum Particle ◽  
Flat Space ◽  
Stimulated Emission ◽  
Quantum Field ◽  
Two Dimensional ◽  
Scalar Quantum

We extend our previous work on scalar quantum particle production by moving mirrors in two-dimensional flat space-time to models with asymptotically null trajectories. This proves to have considerable heuristic value in understanding the mechanism of quantum particle emission from black holes. We demonstrate that Hawking’s derivation of that phenomenon using ray-tracing is mathematically identical to the geometrical optics associated with a certain class of mirror trajectory. Investigation of the simpler system clarifies the relation between particles and energy in quantum field theory. A mirror trajectory is presented by which a flux of particles is created, but no energy at all is radiated. We also show that the stimulated emission that occurs when a single particle is incident on the mirror simply corresponds to the classical reflexion of the associated wave, and that the total energy may decrease in this process.

scholarly journals Sudden singularities survive massive quantum particle production

2011 ◽  
Vol 84 (12) ◽  
Author(s):  
John D. Barrow ◽  
Antônio B. Batista ◽  
Júlio C. Fabris ◽  
Mahouton J. S. Houndjo ◽  
Giuseppe Dito
Keyword(s):  
Particle Production ◽  
Quantum Particle

Intramitochondrial Viruses of Reptilian Cell Origin

1972 ◽  
Vol 30 ◽  
pp. 318-319
Author(s):  
Philip D. Lunger ◽  
H. Fred Clark
Keyword(s):  
Particle Production ◽  
Outer Zone ◽  
Density Variation ◽  
Core Region ◽  
Mitochondrial Membranes ◽  
Virus Particles ◽  
The Core ◽  
Vipera Russelli ◽  
Maturation Stages ◽  
Type Particle

In the course of fine structure studies of spontaneous “C-type” particle production in a viper (Vipera russelli) spleen cell line, designated VSW, virus particles were frequently observed within mitochondria. The latter were usually enlarged or swollen, compared to virus-free mitochondria, and displayed a considerable degree of cristae disorganization.Intramitochondrial viruses measure 90 to 100 mμ in diameter, and consist of a nucleoid or core region of varying density and measuring approximately 45 mμ in diameter. Nucleoid density variation is presumed to reflect varying degrees of condensation, and hence maturation stages. The core region is surrounded by a less-dense outer zone presumably representing viral capsid.Particles are usually situated in peripheral regions of the mitochondrion. In most instances they appear to be lodged between loosely apposed inner and outer mitochondrial membranes.

Electrospray technique for solid lipid-based particle production

2009 ◽  
Vol 00 (00) ◽  
pp. 090930024652050-8
Author(s):  
M. Trotta ◽  
R. Cavalli ◽  
C. Trotta ◽  
R. Bussano ◽  
L. Costa
Keyword(s):  
Particle Production ◽  
Solid Lipid
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