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

According to thermodynamics, the specific heat of Boltzmannian short-rangeinteracting systems is a positive quantity. Less intuitive properties areinstead displayed by systems characterized by long-range interactions. In thatcase, the sign of specific heat depends on the considered statistical ensemble:negative specific heat can be found in isolated systems, which are studied inthe framework of the microcanonical ensemble; on the other hand, it isgenerally recognized that a positive specific heat should always be measured insystems in contact with a thermal bath, for which the canonical ensemble is theappropriate one. We demonstrate that the latter assumption is not generallytrue: one can in principle measure negative specific heat also in the canonicalensemble if the system under scrutiny is non-Boltzmannian and/orout-of-equilibrium.

Can one measure negative specific heat in the canonical statistical ensemble?