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/

Zendy Plus

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

Zendy Tools

Zendy Open

The main objective of this work is to explore the evolution in the structureof the quark-antiquark bound states in going down in the chirally restoredphase from the so-called "zero binding points" $T_{zb}$ to the QCD criticaltemperature $T_c$ at which the Nambu-Goldstone and Wigner-Weyl modes meet. Indoing this, we adopt the idea recently introduced by Shuryak and Zahed forcharmed $\bar c c$, light-quark $\bar q q$ mesons $\pi, \sigma, \rho, A_1$ andgluons that at $T_{zb}$, the quark-antiquark scattering length goes through$\infty$ at which conformal invariance is restored, thereby transforming thematter into a near perfect fluid behaving hydrodynamically, as found at RHIC.We name this new state of matter as "sticky molasses". We show that the bindingof these states is accomplished by the combination of (i) the color Coulombinteraction, (ii) the relativistic effects, and (iii) the interaction inducedby the instanton-anti-instanton molecules. The spin-spin forces turned out tobe small. While near $T_{zb}$ all mesons are large-size nonrelativistic objectsbound by Coulomb attraction, near $T_c$ they get much more tightly bound, withmany-body collective interactions becoming important and making the $\sigma$and $\pi$ masses approach zero (in the chiral limit). The wave function at theorigin grows strongly with binding, and the near-local four-Fermi interactionsinduced by the instanton molecules play an increasingly more important role asthe temperature moves downward toward $T_c$.Comment: Invited Talk at KIAS-APCTP Symposium in Astro-Hadron Physics "Compact  Stars: Quest for New States of Dense Matter", November 10-14, Seoul, Kore

A NEW STATE OF MATTER AT HIGH TEMPERATURE AS "STICKY MOLASSES"