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 study the scalar bound states of $D^{\ast}\bar{D}^{\ast}$ and$B^{\ast}\bar{B}^{\ast}$ in the Bethe-Salpeter formalism, with the effectiveinteraction kernel extracted from the chiral perturbative theory and the heavyquark effective theory in the ladder approximation and the covariantinstantaneous approximation. The results show that, in the scalar case ($J=0$),there can only exist $I = 0$ bound states for parameters in proper range, whilethere cannot exist the $I = 1$ bound states in the whole reasonable parameterrange, due to more constraints arising from our definition of theBethe-Salpeter wavefunction.

Scalar Bound States of $D^{\ast}\bar{D}^{\ast}$ and $B^{\ast}\bar{B}^{\ast}$ in the Bethe-Salpeter Formalism