Soft matter systems are renowned for being able to display complex emerging phenomena such as clustering phases. Recently, a surprising quantum phase transition has been revealed in a one-dimensional (1D) system composed of bosons interacting via a pairwise soft potential in the continuum. It was shown that the spatial coordinates undergoing two-particle clustering could be mapped into quantum spin variables of a 1D transverse Ising model. In this work we investigate the manifestation of an analogous critical phenomenon in 1D classical fluids of soft particles in the continuum. In particular, we study the low-temperature behavior of three different classical models of 1D soft matter, whose interparticle interactions allow for clustering. The same string variables highlight that, at the commensurate density for the two-particle cluster phase, the peculiar pairing of neighboring soft particles can be nontrivially mapped onto a 1D discrete classical Ising model. We also observe a related phenomenon, namely the presence of an anomalous peak in the low-temperature specific heat, thus indicating the emergence of Schottky phenomenology in a nonmagnetic fluid.
Emergence of an Ising critical regime in the clustering of one-dimensional soft matter revealed through string variables / F. Mambretti, S. Molinelli, D. Pini, G. Bertaina, D.E. Galli. - In: PHYSICAL REVIEW. E. - ISSN 2470-0045. - 102:4(2020 Oct 27), pp. 042134.042134-1-042134.042134-12.
|Titolo:||Emergence of an Ising critical regime in the clustering of one-dimensional soft matter revealed through string variables|
MAMBRETTI, FRANCESCO (Primo) (Corresponding)
MOLINELLI, SILVIA (Secondo)
BERTAINA, GIANLUCA (Penultimo)
GALLI, DAVIDE EMILIO (Ultimo)
|Settore Scientifico Disciplinare:||Settore FIS/03 - Fisica della Materia|
|Data di pubblicazione:||27-ott-2020|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1103/physreve.102.042134|
|Appare nelle tipologie:||01 - Articolo su periodico|