Refrigeration effects can be obtained from elastomers classified as “ideal rubber” by operating over a cycle similar to that of the Carnot cycle. The interesting properties of ideal rubber have long been recognized, with most investigations of potential thermodynamic cycles devoted to power cycles. This paper focuses on the development of refrigeration cycles constructed from ideal rubber refri...

We prove that the Besicovitch Covering Property (BCP) does not hold for some classes of homogeneous quasi-distances on Carnot groups of step 3 and higher. As a special case we get that, in Carnot groups of step 3 and higher, BCP is not satisfied for those homogeneous distances whose unit ball centered at the origin coincides with a Euclidean ball centered at the origin. This result comes in con...

We investigate the heat properties of charged AdS black holes in Gauss-Bonnet gravity coupled with nonlinear electrodynamics. consider thermodynamics from perspective capacity and show that electrodynamics can be helpful to improve thermodynamic stability holes. perform a two-dimensional description order reproduce Hawking temperature, which confirms temperature has an intrinsic topological nat...

Publications are increasingly (often wrongly) being used as research outputs. Furthermore, ‘impacts’ of such publications are often (wrongly as well) measured using ‘citations’. Popular metric, like the ‘Hirsch index’, or ‘h-index’ is used as yardstick for judging the quality of individual researchers. However, there are many controversies around it, whether it is a good yardstick, which could ...

Recent theoretical and experimental studies in quantum heat engines show that, the quasi-static regime, it is possible to have higher efficiency than limit imposed by Carnot, provided that engineered reservoirs are used. The however, a strong limitation operation of engines, since infinitely long time required complete cycle. In this paper we propose two-level model as working substance perform...

Since its inception about two centuries ago thermodynamics has sparkled continuous interest and fundamental questions. According to the second law no heat engine can have an efficiency larger than Carnot's efficiency. The latter can be achieved by the Carnot engine, which however ideally operates in infinite time, hence delivers null power. A currently open question is whether the Carnot effici...