Strings as particle arrays
arXiv:2407.08638 · doi:10.1016/j.physletb.2025.139400
Abstract
These notes discuss the emergence of the Polyakov action from the low-energy limit of an array of relativistic particles with harmonic interactions, which is suggestive of a ``microscopic'' description of string theory.
10 pages. v2: small improvements, references added. v3: streamlined presentation of the physical constraints, matches published version