English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We investigate order parameter fluctuations in the Hubbard model within atime-dependent Gutzwiller approach. While in the weak coupling limit we findthat the amplitude fluctuations are short-lived due to a degeneracy with theenergy of the edge of the quasiparticle continua (and in agreement withHartree-Fock + RPA theory), these are shifted below the edge upon increasingthe interaction. Our calculations therefore predict undamped amplitude (Higgs)oscillations of the order parameter in strongly coupled superconductors, coldatomic fermion condensates and in strongly interacting charge- and spin-densitywave systems. We propose an experimental realization for the detection of thespin-type Higgs mode in undoped cuprates and related materials where, due tothe Dzyaloshinsky-Moriya interaction, it can couple to an out-of planeferromagnetic excitation which is visible via the Faraday effect.

Long-lived Higgs modes in strongly correlated condensates