Strings in strongly correlated electron systems

TL;DR

This paper explores how strongly correlated electrons on frustrated lattices can give rise to string-like excitations, revealing connections to concepts in particle physics and highlighting their unique properties.

Contribution

It introduces the concept of string excitations in strongly correlated electron systems on frustrated lattices, a novel perspective linking condensed matter and particle physics.

Findings

Strings can be open or closed in these systems

String dynamics exhibit particle physics-like properties

Nonlocal subsidiary conditions govern electron behavior

Abstract

It is shown that strongly correlated electrons on frustrated lattices like pyrochlore, checkerboard or kagome lattice can lead to the appearance of closed and open strings. They are resulting from nonlocal subsidiary conditions which propagating strongly correlated electrons require. The dynamics of the strings is discussed and a number of their properties are pointed out. Some of them are reminiscent of particle physics.