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Vector spaces of generalized Euler integrals 广义欧拉积分的向量空间
IF 1.9 3区 数学 Q1 MATHEMATICS Pub Date : 2024-07-15 DOI: 10.4310/cntp.2024.v18.n2.a2
Daniele Agostini, Claudia Fevola, Anna-Laura Sattelberger, Simon Telen
We study vector spaces associated to a family of generalized Euler integrals. Their dimension is given by the Euler characteristic of a very affine variety. Motivated by Feynman integrals from particle physics, this has been investigated using tools from homological algebra and the theory of $D$-modules. We present an overview and uncover new relations between these approaches. We also provide new algorithmic tools.
我们研究与广义欧拉积分族相关的向量空间。它们的维度由非常仿射变种的欧拉特性给出。受粒子物理学中费曼积分的启发,我们使用同调代数和 $D$ 模块理论中的工具对其进行了研究。我们对这些方法进行了概述,并揭示了它们之间的新关系。我们还提供了新的算法工具。
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引用次数: 0
Quantum KdV hierarchy and quasimodular forms 量子 KdV 层次和准模态
IF 1.9 3区 数学 Q1 MATHEMATICS Pub Date : 2024-07-15 DOI: 10.4310/cntp.2024.v18.n2.a4
Jan-Willem M. van Ittersum, Giulio Ruzza
Dubrovin $href{https://doi.org/10.1007/s00023-015-0449-2}{[10]}$ has shown that the spectrum of the quantization (with respect to the first Poisson structure) of the dispersionless Korteweg–de Vries (KdV) hierarchy is given by shifted symmetric functions; the latter are related by the Bloch–Okounkov Theorem $href{https://doi.org/10.1007/JHEP07(2014)141}{[1]}$ to quasimodular forms on the full modular group. We extend the relation to quasimodular forms to the full quantum KdV hierarchy (and to the more general quantum Intermediate Long Wave hierarchy). These quantum integrable hierarchies have been defined by Buryak and Rossi $href{https://doi.org/10.1007/s11005-015-0814-6}{[6]}$ in terms of the double ramification cycle in the moduli space of curves. The main tool and conceptual contribution of the paper is a general effective criterion for quasimodularity.
Dubrovin $href{https://doi.org/10.1007/s00023-015-0449-2}{[10]}$ 证明了无色散 Korteweg-de Vries(KdV)层次结构的量子化频谱(关于第一泊松结构)是由移位对称函数给出的;后者通过布洛赫-奥孔科夫定理 $href{https://doi.org/10.1007/JHEP07(2014)141}{[1]}$ 与全模组上的准模态相关。我们把准模形式的关系扩展到完整的量子 KdV 层次(以及更一般的量子中间长波层次)。布里亚克和罗西 $href{https://doi.org/10.1007/s11005-015-0814-6}{[6]}$ 用曲线模空间的双斜面循环定义了这些量子可积分层次。本文的主要工具和概念贡献是准模性的一般有效准则。
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引用次数: 0
Witten–Reshetikhin–Turaev invariants and homological blocks for plumbed homology spheres 垂面同调球的维滕-雷谢金-图拉耶夫不变式和同调块
IF 1.9 3区 数学 Q1 MATHEMATICS Pub Date : 2024-07-15 DOI: 10.4310/cntp.2024.v18.n2.a3
Yuya Murakami
In this paper, we prove a conjecture by Gukov–Pei–Putrov–Vafa for a wide class of plumbed $3$-manifolds. Their conjecture states that Witten–Reshetikhin–Turaev (WRT) invariants are radial limits of homological blocks, which are $q$-series introduced by them for plumbed $3$-manifolds with negative definite linking matrices. The most difficult point in our proof is to prove the vanishing of weighted Gauss sums that appear in coefficients of negative degree in asymptotic expansions of homological blocks. To deal with it, we develop a new technique for asymptotic expansions, which enables us to compare asymptotic expansions of rational functions and false theta functions related to WRT invariants and homological blocks, respectively. In our technique, our vanishing results follow from holomorphy of such rational functions.
在本文中,我们证明了古可夫-裴-普特罗夫-瓦法对一大类垂曲 3 美元-manifolds 的猜想。他们的猜想指出,维滕-雷谢提金-图拉耶夫(WRT)不变式是同调块的径向极限,而同调块是他们为具有负定联系矩阵的垂线 3 美元漫游引入的 q 美元序列。在我们的证明中,最困难的一点是证明在同调块的渐近展开中负度系数中出现的加权高斯和的消失。为了解决这个问题,我们开发了一种新的渐近展开技术,使我们能够比较分别与 WRT 不变量和同调块相关的有理函数和假 Theta 函数的渐近展开。在我们的技术中,我们的消失结果来自于此类有理函数的全态性。
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引用次数: 0
Colored Bosonic models and matrix coefficients 彩色玻色模型和矩阵系数
IF 1.9 3区 数学 Q1 MATHEMATICS Pub Date : 2024-07-15 DOI: 10.4310/cntp.2024.v18.n2.a5
Daniel Bump, Slava Naprienko
We develop the theory of colored bosonic models (initiated by Borodin and Wheeler). We will show how a family of such models can be used to represent the values of Iwahori vectors in the “spherical model” of representations of $mathrm{GL}_r (F)$, where $F$ is a nonarchimedean local field. Among our results are a monochrome factorization, which is the realization of the Boltzmann weights by fusion of simpler weights, a local lifting property relating the colored models with uncolored models, and an action of the Iwahori–Hecke algebra on the partition functions of a particular family of models by Demazure–Lusztig operators. As an application of the local lifting property we reprove a theorem of Korff evaluating the partition functions of the uncolored models in terms of Hall–Littlewood polynomials. Our results are very closely parallel to the theory of fermionic models representing Iwahori–Whittaker functions developed by Brubaker, Buciumas, Bump and Gustafsson, with many striking relationships between the two theories, confirming the philosophy that the spherical and Whittaker models of principal series representations are dual.
我们发展了彩色玻色模型理论(由鲍罗丁和惠勒提出)。我们将展示如何用这样的模型族来表示 $mathrm{GL}_r (F)$ 的 "球形模型 "中岩崛向量的值,其中 $F$ 是一个非archimedean 局部场。我们的成果包括:单色因式分解,即通过融合更简单的权值来实现玻尔兹曼权值;有色模型与无色模型之间的局部提升性质;岩崛-赫克代数通过德马祖尔-路斯提格算子对特定模型族的分割函数的作用。作为局部提升性质的应用,我们重新证明了科尔夫用霍尔-利特尔伍德多项式评估非着色模型分区函数的定理。我们的结果与布鲁贝克(Brubaker)、布库马斯(Buciumas)、布姆普(Bump)和古斯塔夫松(Gustafsson)提出的代表岩崛-惠特克函数的费米子模型理论非常相似,两个理论之间有许多惊人的关系,证实了主序列表示的球面模型和惠特克模型是对偶的这一理念。
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引用次数: 0
The cosmic Galois group, the sunrise Feynman integral, and the relative completion of $Gamma^1(6)$ 宇宙伽罗瓦群、日出费曼积分和 $Gamma^1(6)$ 的相对完备性
IF 1.9 3区 数学 Q1 MATHEMATICS Pub Date : 2024-07-15 DOI: 10.4310/cntp.2024.v18.n2.a1
Matija Tapušković
In the first part of this paper we study the coaction dual to the action of the cosmic Galois group on the motivic lift of the sunrise Feynman integral with generic masses and momenta, and we express its conjugates in terms of motivic lifts of Feynman integrals associated to related Feynman graphs. Only one of the conjugates of the motivic lift of the sunrise, other than itself, can be expressed in terms of motivic lifts of Feynman integrals of subquotient graphs. To relate the remaining conjugates to Feynman integrals we introduce a general tool: subdividing edges of a graph. We show that all motivic lifts of Feynman integrals associated to graphs obtained by subdividing edges from a graph $G$ are motivic periods of $G$ itself. This was conjectured by Brown in the case of graphs with no kinematic dependence. We also look at the single-valued periods associated to the functions on the motivic Galois group, i.e. the ‘de Rham periods’, which appear in the coaction on the sunrise, and show that they are generalisations of Brown’s non-holomorphic modular forms with two weights. In the second part of the paper we consider the relative completion of the torsor of paths on a modular curve and its periods, the theory of which is due to Brown and Hain. Brown studied the motivic periods of the relative completion of $mathcal{M}_{1,1}$ with respect to the tangential basepoint at infinity, and we generalise this to the case of the torsor of paths on any modular curve. We apply this to reprove the claim that the sunrise Feynman integral in the equal-mass case can be expressed in terms of Eichler integrals, periods of the underlying elliptic curve defined by one of the associated graph hypersurfaces, and powers of $2pi i$.
在本文的第一部分,我们研究了宇宙伽罗瓦群对具有一般质量和矩量的日出费曼积分的动机提升的作用的共轭,并用与相关费曼图相关的费曼积分的动机提升来表达它的共轭。除了日出的动机提升本身之外,只有一个日出的动机提升的共轭物可以用子方差图的费曼积分的动机提升来表示。为了将其余共轭与费曼积分联系起来,我们引入了一种通用工具:细分图的边。我们证明,通过细分图 $G$ 的边而得到的与图相关的费曼积分的所有动机提升都是 $G$ 本身的动机周期。这是布朗在没有运动依赖性的图形情况下提出的猜想。我们还研究了与动机伽罗瓦群上的函数相关联的单值周期,即 "de Rham 周期",这些周期出现在日出的协同作用中,并证明它们是布朗具有两个权重的非全形模形式的一般化。在论文的第二部分,我们考虑了模态曲线上路径的矢量的相对完备性及其周期,其理论归功于布朗和海恩。布朗研究了$mathcal{M}_{1,1}$ 相对于无穷切向基点的相对完成的激励周期,我们将其推广到任意模态曲线上的路径背矢的情况。我们将其应用于证明等质量情况下的日出费曼积分可以用艾希勒积分、由相关图超曲面之一定义的底层椭圆曲线的周期以及 $2pi i$ 的幂来表示。
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引用次数: 0
Spectral geometry of functional metrics on noncommutative tori 非交换环上函数度量的谱几何学
IF 1.9 3区 数学 Q1 MATHEMATICS Pub Date : 2024-06-07 DOI: 10.4310/cntp.2024.v18.n1.a4
Asghar Ghorbanpour, Masoud Khalkhali
We introduce a new family of metrics, called functional metrics, on noncommutative tori and study their spectral geometry. We define a class of Laplace type operators for these metrics and study their spectral invariants obtained from the heat trace asymptotics. A formula for the second density of the heat trace is obtained. In particular, the scalar curvature density and the total scalar curvature of functional metrics are explicitly computed in all dimensions for certain classes of metrics including conformally flat metrics and twisted product of flat metrics. Finally a Gauss-Bonnet type theorem for a noncommutative two torus equipped with a general functional metric is proved.
我们在非交换环上引入了一类新的度量,称为函数度量,并研究了它们的谱几何。我们为这些度量定义了一类拉普拉斯型算子,并研究了从热轨迹渐近得到的它们的谱不变式。我们得到了热轨迹的第二密度公式。特别是,对于某些类型的度量,包括保角平坦度量和平坦度量的扭曲乘积,在所有维度上都明确计算了函数度量的标量曲率密度和总标量曲率。最后,证明了配备一般功能度量的非交换二环面的高斯-波内特定理。
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引用次数: 0
Rankin–Cohen brackets for Calabi–Yau modular forms Calabi-Yau 模块形式的兰金-科恩括号
IF 1.9 3区 数学 Q1 MATHEMATICS Pub Date : 2024-06-07 DOI: 10.4310/cntp.2024.v18.n1.a1
Younes Nikdelan
$defM{mathscr{M}}defRscr{mathscr{R}}defRsf{mathsf{R}}defTsf{mathsf{T}}deftildeM{widetilde{M}}$For any positive integer $n$, we introduce a modular vector field $Rsf$ on a moduli space $Tsf$ of enhanced Calabi–Yau $n$-folds arising from the Dwork family. By Calabi–Yau quasi-modular forms associated to $Rsf$ we mean the elements of the graded $mathbb{C}$-algebra $tildeM$ generated by solutions of $Rsf$, which are provided with natural weights. The modular vector field $Rsf$ induces the derivation $Rscr$ and the Ramanujan–Serre type derivation $partial$ on $tildeM$. We show that they are degree $2$ differential operators and there exists a proper subspace $M subset tildeM$, called the space of Calabi–Yau modular forms associated to $Rsf$, which is closed under $partial$. Using the derivation $Rscr$, we define the Rankin–Cohen brackets for $tildeM$ and prove that the subspace generated by the positive weight elements of $M$ is closed under the Rankin–Cohen brackets. We find the mirror map of the Dwork family in terms of the Calabi–Yau modular forms.
$def/M/{mathscr{M}}/def/Rscr{/mathscr{R}}/def/Rsf/mathsf{R}}/def/Tsf/mathsf{T}}/def/tildeM/widetilde/{M}}$对于任意正整数$n$、我们在一个由德沃家族产生的增强卡拉比-尤 $n$ 折叠的模空间 $Tsf$ 上引入一个模向量场 $Rsf$ 。与 $Rsf$ 相关的 Calabi-Yau 准模态形式指的是由 $Rsf$ 的解生成的有级 $mathbb{C}$-algebra $tildeM$ 的元素,这些元素具有自然权重。模向量场 $Rsf$ 在 $tildeM$ 上诱导了导数 $Rscr$ 和拉曼努琼-塞尔型导数 $partial$。我们证明它们都是度数为 2$ 的微分算子,并且存在一个适当的子空间 $M subset tildeM$,称为与 $Rsf$ 相关的 Calabi-Yau 模形式空间,它在 $partial$ 下是封闭的。利用导数 $Rscr$,我们定义了 $tildeM$ 的兰金-科恩括号,并证明由 $M$ 的正权重元素生成的子空间在兰金-科恩括号下是封闭的。我们根据卡拉比-尤模块形式找到了德沃家族的镜像映射。
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引用次数: 0
Quantum geometry, stability and modularity 量子几何、稳定性和模块性
IF 1.9 3区 数学 Q1 MATHEMATICS Pub Date : 2024-06-07 DOI: 10.4310/cntp.2024.v18.n1.a2
Sergei Alexandrov, Soheyla Feyzbakhsh, Albrecht Klemm, Boris Pioline, Thorsten Schimannek
related to Gopakumar-Vafa (GV) invariants, and rank 0 Donaldson-Thomas (DT) invariants countingD4-D2-D0 BPS bound states, we rigorously compute the first few terms in the generating series of Abelian D4-D2-D0 indices for compact one-parameter Calabi-Yau threefolds of hypergeometric type. In all cases where GV invariants can be computed to sufficiently high genus, we find striking confirmation that the generating series is modular, and predict infinite series of Abelian D4-D2-D0 indices. Conversely, we use these results to provide new constraints for the direct integration method, which allows to compute GV invariants (and therefore the topological string partition function) to higher genus than hitherto possible. The triangle of relations between GV/PT/DT invariants is powered by a new explicit formula relating PT and rank 0 DT invariants, which is proven in an Appendix by the second named author. As a corollary, we obtain rigorous Castelnuovo-type bounds for PT and GV invariants for CY threefolds with Picard rank one.
根据与戈帕库马尔-瓦法(GV)不变式和计算 D4-D2-D0 BPS 边界态的 0 级唐纳森-托马斯(DT)不变式相关的研究成果,我们严格计算了超几何型紧凑单参数卡拉比-约三折叠体的阿贝尔 D4-D2-D0 指数生成序列的前几项。在所有可以计算出足够高属的 GV 变量的情况下,我们都发现了惊人的证实:生成序列是模块化的,并预测了阿贝尔 D4-D2-D0 指数的无限序列。反过来,我们利用这些结果为直接积分法提供了新的约束条件,这种方法可以将 GV 不变式(以及拓扑弦划分函数)计算到比迄今为止更高的属。GV/PT/DT不变式之间的三角关系由一个关于 PT 和 0 级 DT 不变式的新的明确公式提供动力,该公式由第二作者在附录中证明。作为推论,我们获得了皮卡等级为 1 的 CY 三折的 PT 和 GV 不变式的严格卡斯特努沃式边界。
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引用次数: 0
On motivic and arithmetic refinements of Donaldson-Thomas invariants 论唐纳森-托马斯不变式的动机和算术改进
IF 1.9 3区 数学 Q1 MATHEMATICS Pub Date : 2024-06-07 DOI: 10.4310/cntp.2024.v18.n1.a3
Felipe Espreafico, Johannes Walcher
In recent years, a version of enumerative geometry over arbitrary fields has been developed and studied by Kass-Wickelgren, Levine, and others, in which the counts obtained are not integers but quadratic forms. Aiming to understand the relation to other “refined invariants”, and especially their possible interpretation in quantum theory, we explain how to obtain a quadratic version of Donaldson-Thomas invariants from the motivic invariants defined in the work of Kontsevich and Soibelman and pose some questions. We calculate these invariants in a few simple examples that provide standard tests for these questions, including degree zero invariants of A3 and higher-genus Gopakumar-Vafa invariants recently studied by Liu and Ruan. The comparison with known real and complex counts plays a central role throughout.
近年来,卡斯-维克尔格伦(Kass-Wickelgren)、莱文(Levine)等人开发并研究了一种任意域上的枚举几何,其中得到的计数不是整数,而是二次形式。为了理解与其他 "精致不变式 "的关系,特别是它们在量子理论中的可能解释,我们解释了如何从康采维奇和索伊贝尔曼工作中定义的动机不变式中获得二次型唐纳森-托马斯不变式,并提出了一些问题。我们在几个简单的例子中计算了这些不变式,这些例子为这些问题提供了标准检验,包括 A3 的零度不变式和刘和阮最近研究的更高属的戈帕库马尔-瓦法不变式。与已知实数和复数的比较在整个过程中起着核心作用。
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引用次数: 0
Infinite families of quantum modular 3-manifold invariants 量子模态 3-manifold不变式无穷族
IF 1.9 3区 数学 Q1 MATHEMATICS Pub Date : 2024-06-07 DOI: 10.4310/cntp.2024.v18.n1.a5
Louisa Liles, Eleanor McSpirit
One of the first key examples of a quantum modular form, which unifies the Witten-Reshetikhin-Turaev (WRT) invariants of the Poincaré homology sphere, appears in work of Lawrence and Zagier. We show that the series they construct is one instance in an infinite family of quantum modular invariants of negative definite plumbed 3‑manifolds whose radial limits toward roots of unity may be thought of as a deformation of the WRT invariants. We use a recently developed theory of Akhmechet, Johnson, and Krushkal (AJK) which extends lattice cohomology and BPS $q$‑series of 3‑manifolds. As part of this work, we provide the first calculation of the AJK series for an infinite family of 3‑manifolds. Additionally, we introduce a separate but related infinite family of invariants which also exhibit quantum modularity properties.
量子模态形式统一了 Poincaré 同调球的 Witten-Reshetikhin-Turaev (WRT) 不变量,这是最早出现在 Lawrence 和 Zagier 的研究中的关键实例之一。我们的研究表明,他们构建的数列是负定垂3-manifolds量子模态不变式无穷族中的一个实例,这些量子模态不变式朝向统一根的径向极限可以看作是WRT不变式的变形。我们使用了 Akhmechet、Johnson 和 Krushkal(AJK)最近开发的理论,该理论扩展了 3-manifolds(3-manifolds)的格同调和 BPS $q$ 系列。作为这项工作的一部分,我们首次计算了 3-manifolds无穷族的 AJK 序列。此外,我们还引入了一个独立但相关的无穷变量族,它也表现出量子模块性特性。
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引用次数: 0
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Communications in Number Theory and Physics
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