Sparse Modular Forms, Lattices, and Codes

Fuente: arXiv
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Main Authors: Keller, Christoph A., Roberts, Ashley Winter
Format: Preprint
Published: 2025
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author Keller, Christoph A.
Roberts, Ashley Winter
author_facet Keller, Christoph A.
Roberts, Ashley Winter
contents Motivated by sparseness conditions for holographic CFTs, we investigate sparseness of modular forms, lattices, and codes. For this we investigate the free energy of such objects as their weight, dimension or size goes to infinity. We construct families of modular forms that are sparse, such as the Eisenstein series $E_{2k}(τ)$. We then investigate lattices that come from codes and introduce a sparseness condition for such lattices. We investigate the limit of lattices constructed from self-dual Reed-Muller codes and provide evidence that they are sparse in this sense.
format Preprint
id arxiv_https___arxiv_org_abs_2511_13816
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Sparse Modular Forms, Lattices, and Codes
Keller, Christoph A.
Roberts, Ashley Winter
High Energy Physics - Theory
Number Theory
Motivated by sparseness conditions for holographic CFTs, we investigate sparseness of modular forms, lattices, and codes. For this we investigate the free energy of such objects as their weight, dimension or size goes to infinity. We construct families of modular forms that are sparse, such as the Eisenstein series $E_{2k}(τ)$. We then investigate lattices that come from codes and introduce a sparseness condition for such lattices. We investigate the limit of lattices constructed from self-dual Reed-Muller codes and provide evidence that they are sparse in this sense.
title Sparse Modular Forms, Lattices, and Codes
topic High Energy Physics - Theory
Number Theory
url https://arxiv.org/abs/2511.13816