Title
Geometrical aspects in the analysis of microcanonical phase-transitions
Abstract
In the present work, we discuss how the functional form of thermodynamic observables can be deduced from the geometric properties of subsets of phase space. The geometric quantities taken into account are mainly extrinsic curvatures of the energy level sets of the Hamiltonian of a system under investigation. In particular, it turns out that peculiar behaviours of thermodynamic observables at a phase transition point are rooted in more fundamental changes of the geometry of the energy level sets in phase space. More specifically, we discuss how microcanonical and geometrical descriptions of phase-transitions are shaped in the special case of phi(4) models with either nearest-neighbours and mean-field interactions.
Year
DOI
Venue
2020
10.3390/e22040380
ENTROPY
Keywords
DocType
Volume
microcanonical ensemble,phase transitions,differential geometry
Journal
22
Issue
ISSN
Citations 
4
1099-4300
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Bel-Hadj-Aissa Ghofrane100.34
Gori Matteo200.34
Penna Vittorio300.34
Pettini Giulio400.34
Roberto Franzosi511.03