Stability of an electroweak string with a fermion condensate
نویسندگان
چکیده
منابع مشابه
Critical temperature and condensate fraction of a fermion pair condensate.
We report on measurements of the critical temperature and the temperature dependence of the condensate fraction for a fermion pair condensate of 6Li atoms. Bragg spectroscopy is employed to determine the critical temperature and the condensate fraction after a fast magnetic field ramp to the molecular side of the Feshbach resonance. Our measurements reveal evidence of level off of the critical ...
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The dynamics of pair condensate formation in a strongly interacting Fermi gas close to a Feshbach resonance was studied. We employed a phase-shift method in which the delayed response of the many-body system to a modulation of the interaction strength was recorded. The observable was the fraction of condensed molecules in the cloud after a rapid magnetic field ramp across the Feshbach resonance...
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We give plausibility arguments for the existence of a W–dressed electroweak string for the Weinberg–Salam model with θW = 0. This string is a Z–string which in the core has a finite energy contribution from W–condensation induced by the anomalous magnetic moment in the Yang–Mills field. The solution which has minimum energy at r = 0 interpolates between the unbroken (r = 0) and the broken (r → ...
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We consider a quantum system composed of a small part, having finitely many degrees of freedom, interacting with a free, spatially infinitely extended Bose gas. An equilibrium state for the uncoupled system is given by the product state where the small part is in the Gibbs state at some temperature T > 0, and the Bose gas is in a state where a spatially homogeneous Bose-Einstein Condensate is i...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1994
ISSN: 0370-2693
DOI: 10.1016/0370-2693(94)91488-5