English

Truncated Geometry on the Circle

Quantum Algebra 2022-08-04 v2 Mathematical Physics math.MP Operator Algebras

Abstract

In this letter we prove that the pure state space on the n×nn \times n complex Toeplitz matrices converges in Gromov-Hausdorff sense to the state space on C(S1)C(S^1) as nn grows to infinity, if we equip these sets with the metrics defined by the Connes distance formula for their respective natural Dirac operators. A direct consequence of this fact is that the set of measures on S1S^1 with density functions cj=1n(1cos(tθj))c \prod_{j=1}^n (1-\cos(t-\theta_j)) is dense in the set of all positive Borel measures on S1S^1 in the weak^* topology.

Keywords

Cite

@article{arxiv.2111.13865,
  title  = {Truncated Geometry on the Circle},
  author = {Eva-Maria Hekkelman},
  journal= {arXiv preprint arXiv:2111.13865},
  year   = {2022}
}

Comments

13 pages, no figures. Submitted to and accepted by Letters in Mathematical Physics

R2 v1 2026-06-24T07:54:01.344Z