English

A Note on D1-D5 Entropy and Geometric Quantization

High Energy Physics - Theory 2015-07-27 v3

Abstract

We quantize the space of 2-charge fuzzballs in IIB supergravity on K3K3. The resulting entropy precisely matches the D1-D5 black hole entropy, including a specific numerical coefficient. A partial match (ie., a smaller coefficient) was found by Rychkov a decade ago using the Lunin-Mathur subclass of solutions - we use a simple observation to generalize his approach to the full moduli space of K3K3 fuzzballs, filling a small gap in the literature.

Cite

@article{arxiv.1504.04330,
  title  = {A Note on D1-D5 Entropy and Geometric Quantization},
  author = {Chethan Krishnan and Avinash Raju},
  journal= {arXiv preprint arXiv:1504.04330},
  year   = {2015}
}

Comments

v2,3: minor corrections to a footnote and acknowledgments, v1 is the JHEP version

R2 v1 2026-06-22T09:17:30.568Z