A weak, attractive, long-range force in Higgs condensates

A weak, attractive, long-range force in Higgs condensates

Due to the peculiar nature of the underlying medium, density fluctuations in a ‘Higgs condensate’ are predicted to propagate for infinitely long wavelengths with a group velocity cs → ∞. On the other hand, for any large but finite cs there is a weak, attractive 1/r potential of strength 1 cs and the energy spectrum deviates from the purely massive form √ p2 +M2 h at momenta smaller than δ ∼ Mh ...

Long-wavelength excitations of Higgs condensates

Quite independently of the Goldstone phenomenon, recent lattice data suggest the existence of gap-less modes in the spontaneously broken phase of a λΦ4 theory. This result is a direct consequence of the quantum nature of the ‘Higgs condensate’ that cannot be treated as a purely classical c-number field. Spontaneously broken λΦ4 theories have been used to fix the ground state in many quantum fie...

Effects of degassing on the long-range attractive force between hydrophobic surfaces in water.

The long-ranged attractions between hydrophobic amorphous fluoropolymer surfaces are measured in water with and without dissolved air. An atomic force microscope is used to obtain more than 500 measured jump-in distances, which yields statistically reliable results. It is found that the range of the attraction and its variability is generally significantly decreased in deaerated water as compar...

Weak Force Measurement in Bistable Optomechanical System

One of the main milestones in the study of opto-mechanical system is to increase the sensitivity of weak forces measurement up to the standard quantum limit. We have studied the detection of weak force under a bistable condition in red detuned regime. In this case, dynamics of the system behaves asymptotically similar to stationary state and applying external force affects phase and fluctuation...

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