Active cancellation of stray magnetic fields in a Bose-Einstein condensation experiment

2007 ◽  
Vol 78 (2) ◽  
pp. 024703 ◽  
Author(s):  
C. J. Dedman ◽  
R. G. Dall ◽  
L. J. Byron ◽  
A. G. Truscott
Keyword(s):  
Magnetic Fields ◽  
Einstein Condensation ◽  
Bose Einstein Condensation ◽  
Active Cancellation ◽  
Bose Einstein

scholarly journals Ferromagnetic properties of charged vector bosons condensate in the early universe

2010 ◽  
Vol 6 (S274) ◽  
pp. 385-388
Author(s):  
Gabriella Piccinelli
Keyword(s):  
Magnetic Properties ◽  
Magnetic Fields ◽  
Early Universe ◽  
Ferromagnetic State ◽  
Einstein Condensation ◽  
Ferromagnetic Properties ◽  
Bose Einstein Condensation ◽  
Vector Bosons ◽  
Primordial Magnetic Fields ◽  
Bose Einstein

AbstractBose-Einstein condensation in the early universe is considered. The magnetic properties of a condensate of charged vector bosons are studied, showing that a ferromagnetic state is formed. As a consequence, the primeval plasma may be spontaneously magnetized inside macroscopically large domains and primordial magnetic fields can be generated.

MAGNETIC SUSCEPTIBILITY OF THE NONRELATIVISTIC BOSON GAS

2000 ◽  
Vol 14 (17n18) ◽  
pp. 645-651 ◽  
Author(s):  
LAUREAN HOMORODEAN
Keyword(s):  
Magnetic Susceptibility ◽  
Magnetic Fields ◽  
Einstein Condensation ◽  
Condensation Temperature ◽  
Magnetic Susceptibilities ◽  
Bose Einstein Condensation ◽  
Ideal Gases ◽  
Increasing Temperature ◽  
Bose Einstein

The magnetic susceptibilities of the degenerate (below the Bose–Einstein condensation temperature) and nondegenerate ideal gases of nonrelativistic charged spinless bosons are presented. In both cases, the boson gas is diamagnetic. The magnetic susceptibility of the degenerate boson gas below the Bose–Einstein condensation temperature increases in modulus as the temperature increases. As expected, the magnetic susceptibility of the nondegenerate boson gas decreases in modulus with increasing temperature according to the Curie law in low magnetic fields.

scholarly journals BOSE–EINSTEIN CONDENSATION OF CHARGED PARTICLES AND SELF-MAGNETIZATION

2004 ◽  
Vol 13 (07) ◽  
pp. 1207-1211 ◽  
Author(s):  
AURORA PÉREZ MARTÍNEZ ◽  
HUGO PÉREZ ROJAS ◽  
HERMAN MOSQUERA CUESTA
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Magnetic Fields ◽  
White Dwarfs ◽  
Charged Particles ◽  
Dense Matter ◽  
Einstein Condensation ◽  
Strong Anisotropy ◽  
Bose Einstein Condensation ◽  
Bose Einstein

We discuss the Bose–Einstein condensation of relativistic vector charged particles in a strong external magnetic field in very dense matter, as may be paired spin-up electrons. We show that for electrons such systems may maintain self-consistently magnetic fields of order in between the interval 1010–1013 Gauss. This could be the origin of large magnetic fields in some white dwarfs, but may also impose bounds due to the arising of strong anisotropy in the pressures, which may produce a transverse collapse of the star.

Systems with Condensates and Pairing

2018 ◽  
Author(s):  
Klaus Morawetz
Keyword(s):  
Critical Parameters ◽  
Einstein Condensation ◽  
Cooper Pairs ◽  
Pair Breaking ◽  
Systematic Theory ◽  
Bose Einstein Condensation ◽  
T Matrix ◽  
The Stability ◽  
Bose Einstein

The Bose–Einstein condensation and appearance of superfluidity and superconductivity are introduced from basic phenomena. A systematic theory based on the asymmetric expansion of chapter 11 is shown to correct the T-matrix from unphysical multiple-scattering events. The resulting generalised Soven scheme provides the Beliaev equations for Boson’s and the Nambu–Gorkov equations for fermions without the usage of anomalous and non-conserving propagators. This systematic theory allows calculating the fluctuations above and below the critical parameters. Gap equations and Bogoliubov–DeGennes equations are derived from this theory. Interacting Bose systems with finite temperatures are discussed with successively better approximations ranging from Bogoliubov and Popov up to corrected T-matrices. For superconductivity, the asymmetric theory leading to the corrected T-matrix allows for establishing the stability of the condensate and decides correctly about the pair-breaking mechanisms in contrast to conventional approaches. The relation between the correlated density from nonlocal kinetic theory and the density of Cooper pairs is shown.

scholarly journals Bose Einstein condensation in a magnetic double-well potential

2003 ◽  
Vol 5 (2) ◽  
pp. S119-S123 ◽  
Author(s):  
T G Tiecke ◽  
M Kemmann ◽  
Ch Buggle ◽  
I Shvarchuck ◽  
W von Klitzing ◽  
...  
Keyword(s):  
Einstein Condensation ◽  
Bose Einstein Condensation ◽  
Bose Einstein ◽  
Double Well Potential
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