Some New Modular Rank Three Nahm Sums from a Lift-Dual Operation

Fuente: arXiv
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Main Authors: Cao, Zhineng, Wang, Liuquan
Format: Preprint
Published: 2024
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_version_ 1866915073365114880
author Cao, Zhineng
Wang, Liuquan
author_facet Cao, Zhineng
Wang, Liuquan
contents Around 2007, Zagier discovered some rank two and rank three Nahm sums, and their modularity have now all been confirmed. Zagier also observed that the dual of a modular Nahm sum is likely to be modular. This duality observation motivates us to discover some new modular rank three Nahm sums by a lift-dual operation. We first lift Zagier's rank two Nahm sums to rank three and then calculate their dual, and we show that these dual Nahm sums are indeed modular. We achieve this by establishing the corresponding Rogers--Ramanujan type identities, which express these Nahm sums as modular infinite products.
format Preprint
id arxiv_https___arxiv_org_abs_2412_15767
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Some New Modular Rank Three Nahm Sums from a Lift-Dual Operation
Cao, Zhineng
Wang, Liuquan
Number Theory
Combinatorics
11P84, 33D15, 33D60, 11F03
Around 2007, Zagier discovered some rank two and rank three Nahm sums, and their modularity have now all been confirmed. Zagier also observed that the dual of a modular Nahm sum is likely to be modular. This duality observation motivates us to discover some new modular rank three Nahm sums by a lift-dual operation. We first lift Zagier's rank two Nahm sums to rank three and then calculate their dual, and we show that these dual Nahm sums are indeed modular. We achieve this by establishing the corresponding Rogers--Ramanujan type identities, which express these Nahm sums as modular infinite products.
title Some New Modular Rank Three Nahm Sums from a Lift-Dual Operation
topic Number Theory
Combinatorics
11P84, 33D15, 33D60, 11F03
url https://arxiv.org/abs/2412.15767