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 Plus annual

Presents the access of premium content as premium feature

Premium Content

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 annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Using the approach of low-energy effective field theory, the phase diagram isstudied for a mixture of two species of pseudospin-$\1/2$ Bose atoms withinterspecies spin-exchange. There are four mean-field regimes on the parameterplane of $g_e$ and $g_z$, where $g_e$ is the interspecies spin-exchangeinteraction strength, while $g_z$ is the difference between the interactionstrength of interspecies scattering without spin-exchange of equal spins andthat of unequal spins. Two regimes, with $|g_z| > |g_e|$, correspond to groundstates with the total spins of the two species parallel or antiparallel along$z$ direction, and the low energy excitations are equivalent to those oftwo-component spinless Bosons. The other two regimes, with $|g_e| > |g_z|$,correspond to ground states with the total spins of the two species parallel orantiparallel on $xy$ plane, and the low energy excitations are described by asine-Gordon model coupled with a free scalar field, where the effective fieldsare combinations of the phases of the original four Boson fields. In(1+1)-dimension, they are described by Kosterlitz-Thouless renormalizationgroup (RG) equations, and there are three sectors in the phase plane of ascaling dimension and a dimensionless parameter proportional to the strength ofthe cosine interaction, both depending on the densities. The gaps of theseelementary excitations are experimental probes of the underlying many-bodyground states.

journal of statistical mechanics

Sine-Gordon model coupled with a free scalar field emergent in the  low-energy phase dynamics of a mixture of pseudospin-1/2 Bose gases with  interspecies spin exchange