scholarly journals PHOTOPRODUCTION OF DILATONS IN AN EXTERNAL MAGNETIC FIELD

2000 ◽  
Vol 15 (01) ◽  
pp. 23-28 ◽  
Author(s):  
DANG VAN SOA ◽  
HOANG NGOC LONG
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Cross Sections ◽  
Differential Cross ◽  
Numerical Evaluation ◽  
Static Magnetic Fields ◽  
Five Dimensions ◽  
High Energies ◽  
Klein Theory ◽  
Kaluza Klein

An attempt is made to present some experimental predictions of the five dimensions Kaluza–Klein theory. The conversion of photons into dilatons in the static magnetic fields are considered in detail. The differential cross-sections are presented for the conversions in a magnetic field of the flat condensor and a magnetic field of the solenoid. A numerical evaluation shows that in the present technical scenario, the creation of dilatons at high energies may have the observable value.

scholarly journals ELECTROMAGNETIC-GRAVITATIONAL CONVERSION CROSS-SECTIONS IN EXTERNAL ELECTROMAGNETIC FIELDS

1994 ◽  
Vol 09 (39) ◽  
pp. 3619-3627 ◽  
Author(s):  
HOANG NGOC LONG ◽  
DANG VAN SOA ◽  
TUAN A. TRAN
Keyword(s):  
Magnetic Field ◽  
Electric Field ◽  
Electromagnetic Fields ◽  
Cross Sections ◽  
Differential Cross ◽  
Numerical Evaluation ◽  
Differential Cross Sections ◽  
Perturbation Techniques ◽  
External Electromagnetic Fields ◽  
The Magnetic Field

The classical processes: the conversion of photons into gravitons in the static electromagnetic fields are considered by using Feynman perturbation techniques. The differential cross-sections are presented for the conversion in the electric field of the flat condenser and the magnetic field of the solenoid. A numerical evaluation shows that the cross-sections may have the observable value in the present technical scenario.

PHOTOPRODUCTION OF GRAVITONS AND DILATONS IN AN EXTERNAL ELECTROMAGNETIC FIELD

1991 ◽  
Vol 06 (25) ◽  
pp. 2315-2322
Author(s):  
HOANG NGOC LONG ◽  
LE KHAC HUONG
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Field ◽  
Electric Field ◽  
Static Magnetic Field ◽  
Cross Sections ◽  
High Frequency ◽  
Numerical Evaluation ◽  
External Electromagnetic Field ◽  
The Creation ◽  
Kaluza Klein

An attempt is made to present experimental predictions of the Kaluza-Klein based models. We consider the creation of gravitons and dilatons by photons in an external electromagnetic field, namely in the electric field of a flat condenser and in the static magnetic field. The relation between the cross-sections of these two processes is given. A numerical evaluation shows that in the present technical scenario the creation of high frequency gravitons and dilatons may be indirectly observable.

Electron scattering from germanium tetrafluoride

RSC Advances ◽  
2014 ◽  
Vol 4 (109) ◽  
pp. 63817-63823 ◽  
Author(s):  
Biplab Goswami ◽  
Rahla Naghma ◽  
Bobby Antony
Keyword(s):  
Momentum Transfer ◽  
Electron Scattering ◽  
Cross Sections ◽  
Differential Cross ◽  
Shape Resonance ◽  
Differential Cross Sections ◽  
Rotational Excitation ◽  
R Matrix ◽  
High Energies ◽  
Germanium Tetrafluoride

R-matrix and SCOP methods are used at low and high energies respectively to find e-GeF4 TCS. Electronic and rotational excitation, momentum transfer and elastic differential cross sections are also calculated. A shape resonance is observed at 5.7 eV.

THE EMBEDDING OF THE SPACETIME IN FIVE DIMENSIONS

2002 ◽  
Vol 17 (29) ◽  
pp. 4287-4295
Author(s):  
C. ROMERO
Keyword(s):  
Differential Geometry ◽  
Geometrical Structure ◽  
Embedding Theorems ◽  
Five Dimensions ◽  
Matter Theory ◽  
Klein Theory ◽  
Induced Matter ◽  
Kaluza Klein

We briefly review the problem of embedding the spacetime in five dimensions and discuss the geometrical structure of a non-compactified version of Kaluza-Klein theory, known as induced-matter theory. We also highlight the importance of the embedding theorems of differential geometry in the context of embedding theories and present new results which may be considered as extensions of the Campbell-Magaard theorem.

scholarly journals GRAVITON-PHOTON CONVERSION ON SPIN 0 AND 1/2 PARTICLES

2002 ◽  
Vol 17 (27) ◽  
pp. 3963-3973 ◽  
Author(s):  
FINN RAVNDAL ◽  
MATS SUNDBERG
Keyword(s):  
Quantum Gravity ◽  
Cross Sections ◽  
Differential Cross ◽  
Forward Direction ◽  
Differential Cross Sections ◽  
High Energies ◽  
Photon Conversion

The differential cross-sections for scattering of gravitons into photons on bosons and fermions are calculated in linearized quantum gravity. They are found to be strongly peaked in the forward direction and become constant at high energies. Numerically, they are very small as expected for such gravitational interactions.

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