A Spectral Gap for Spinors on Hyperbolic Surfaces

The purpose of this note is to construct a sequence of spin hyperbolic surfaces Σn with genus going to infinity and with a uniform spectral gap for the Dirac operator. Our construction is completely explicit. In particular, the Σn can be taken to be a tower of covers, with each Σn an arithmetic hyperbolic surface.

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Publication Details

Journal
Repository for Publications and Research Data (ETH Zurich)
Published
2025-06-20
DOI
https://doi.org/10.3929/ethz-c-000793540
Primary Topic
Geometric and Algebraic Topology
Type
article
Field-Weighted Citation Impact
0.00
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article

A Spectral Gap for Spinors on Hyperbolic Surfaces

Vikram Giri, Anshul Adve
Repository for Publications and Research Data (ETH Zurich)
Geometric and Algebraic Topology
article

A Spectral Gap for Spinors on Hyperbolic Surfaces

Vikram Giri, Anshul Adve
article en

Abstract

The purpose of this note is to construct a sequence of spin hyperbolic surfaces Σn with genus going to infinity and with a uniform spectral gap for the Dirac operator. Our construction is completely explicit. In particular, the Σn can be taken to be a tower of covers, with each Σn an arithmetic hyperbolic surface.

Repository for Publications and Research Data (ETH Zurich)
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A Spectral Gap for Spinors on Hyperbolic Surfaces — Vikram Giri, Anshul Adve · Repository for Publications and Research Data (ETH Zurich) (2025) | TGRS Research Map | TGRS