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One important effect in quantum vacuum is the occurrence of the
spontaneous symmetry breaking mechanism. This will be scrutinized soon
in its deepest form at the Large Hadron Collider under construction at
CERN. This mechanism being tested is a fundamental mechanisms that
provides mass to elementary particles. Also, it is at the heart
of phenomena like superfluidity and superconductivity, therefore
allowing tests of related effective models through table-top
experiments. Consequently, we are currently pursuing the study of
exotic superfluidity states in ultracold Fermi-Bose mixtures. We are
developing an apparatus at Dartmouth to simultaneously trap and cool in
the degenerate regime a 6Li-87Rb mixture in
order to obtain a deep Fermi degenerate gas. |
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Lithium
& Rubidium beam lines.
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This mixture has
been identified
as the most promising combination to reach a deep Fermi
degenerate regime by using bichromatic traps or optically-assisted
magnetic traps. Once Fermi degeneracy will be achieved, we will explore
non-standard pairing mechanisms, such as those generating Fulde-Ferrel
superfluidity, and interior gap superfluidity. This will estabilish a
strong interdisciplinary link between cold atom experiments and studies
of vacuum in quantum chromodynamics. |
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Lithium
cell fluorescence, seen when the diode laser is tuned to an atomic
resonance.
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Frequency
synthesis scheme for Rubidium slowing and trapping
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Spin-flip
Zeeman slower for 87Rb. Plot below shows matching of
measured magnetic field (blue) and required field profile (pink).
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