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

We use two available methods, the Duhem-Gibbs relation and the entropyformula in terms of particle phase space distributions, to calculate theentropy in a quark combination model. The entropy of the system extracted fromthe Duhem-Gibbs relation is found to increase in hadronization if the averagetemperature of the hadronic phase is lower than that of the quark phase. Theincrease of the entropy can also be confirmed from the entropy formula if thevolume of the hadronic phase is larger than 2.5-3.0 times that of the quarkphase. So whether the entropy increases or decreases during combination dependson the temperature before and after combination and on how much expansion thesystem undergoes during combination. The current study provides an example toshed light on the entropy issue in the quark combination model.

The entropy puzzle and the quark combination model