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We study the third moment of quadratic Dirichlet L-functions, obtaining an error term of size $O(X^{3/4 + \varepsilon})$.

Number Theory · Mathematics 2014-05-22 Matthew P. Young

The first and second moments are established for the family of quadratic Dirichlet $L$--functions over the rational function field at the central point $s=\tfrac{1}{2}$ where the character $\chi$ is defined by the Legendre symbol for…

Number Theory · Mathematics 2014-01-03 Julio C. Andrade , Jonathan P. Keating

We obtain an asymptotic formula for the smoothly weighted first moment of primitive quadratic Dirichlet L-functions at the central point, with an error term that is "square-root" of the main term. Our approach uses a recursive technique…

Number Theory · Mathematics 2013-03-27 Matthew P. Young

Let $q$ be an odd prime power, and $H_{d,q}$ denote the set of square-free monic polynomials $D(x) \in F_q[x]$ of degree $d$. Katz and Sarnak showed that the moments, over $H_{d,q}$, of the zeta functions associated to the curves…

Number Theory · Mathematics 2015-08-19 Michael O. Rubinstein , Kaiyu Wu

In this paper, we obtain asymptotic formulas for weighted first moments of central values of families of primitive quadratic Dirichlet $L$-functions whose conductors comprise only primes that split in a given quadratic number field. We then…

Number Theory · Mathematics 2020-01-01 Peng Gao , Liangyi Zhao

We prove an asymptotic formula for the fourth power mean of Dirichlet L-functions averaged over primitive characters to modulus q and over t\in [0,T] which is particularly effective when q \ge T. In this range the correct order of magnitude…

Number Theory · Mathematics 2015-05-13 H. M. Bui , D. R. Heath-Brown

We compute the fourth moment of Dirichlet L-functions at the central point for prime moduli, with a power savings in the error term.

Number Theory · Mathematics 2013-03-27 Matthew P. Young

We derive formulas for the terms in the conjectured asymptotic expansions of the moments, at the central point, of quadratic Dirichlet $L$-functions, $L(1/2,\chi_d)$, and also of the $L$-functions associated to quadratic twists of an…

Number Theory · Mathematics 2012-06-18 Ian P. Goulden , Duc Khiem Huynh , Rishikesh , Michael O. Rubinstein

We evaluate asymptotically the smoothed first moment of central values of families of primitive cubic, quartic and sextic Dirichlet $L$-functions, using the method of double Dirichlet series. Quantitative non-vanishing result for these…

Number Theory · Mathematics 2024-04-01 Peng Gao , Liangyi Zhao

A new reciprocity formula for Dirichlet $L$-functions associated to an arbitrary primitive Dirichlet character of prime modulus $q$ is established. We find an identity relating the fourth moment of individual Dirichlet $L$-functions in the…

Number Theory · Mathematics 2025-02-17 Ikuya Kaneko

We obtain the asymptotic main term of moments of arbitrary derivatives of $L$-functions in the function field setting. Specifically, the first, second, and mixed fourth moments. The average is taken over all non-trivial characters of a…

Number Theory · Mathematics 2019-04-10 J. C. Andrade , M. Yiasemides

We evaluate the first moment of central values of the family of quadratic Dirichlet $L$-functions using the method of double Dirichlet series. Under the generalized Riemann hypothesis, we prove an asymptotic formula with an error term of…

Number Theory · Mathematics 2024-08-27 Peng Gao , Liangyi Zhao

We investigate the mean value of the first moment of primitive quartic $L$-functions over $\mathbb{F}_q(T)$ in the non-Kummer setting. Specifically, we study the sum \begin{equation*} \sum_{\substack{\chi\ primitive\ quartic\\ \chi^2…

Number Theory · Mathematics 2025-09-09 Ziwei Hong

In this paper we extend to the function field setting the heuristics formerly developed by Conrey, Farmer, Keating, Rubinstein and Snaith, for the integral moments of $L$-functions. We also adapt to the function setting the heuristics first…

Number Theory · Mathematics 2018-07-18 Julio Andrade , Hwanyup Jung , Asmaa Shamesaldeen

Using the method of multiple Dirichlet series, we develop L-functions ratios conjecture with one shift in both the numerator and denominator in certain ranges for quadratic families of Dirichlet and Hecke L-functions of primerelated moduli…

Number Theory · Mathematics 2024-04-11 Peng Gao , Liangyi Zhao

In this paper we extend the hybrid Euler-Hadamard product model for quadratic Dirichlet $L$-functions associated to irreducible polynomials over function fields. We also establish an asymptotic formula for the first twisted moment in this…

Number Theory · Mathematics 2019-09-20 Julio Andrade , Asmaa Shamesaldeen

We study the fourth moment of quadratic Dirichlet $L$-functions at $s= \frac{1}{2}$. We show an asymptotic formula under the generalized Riemann hypothesis, and obtain a precise lower bound unconditionally. The proofs of these results…

Number Theory · Mathematics 2020-07-29 Quanli Shen

We prove results on moments of $L$-functions in the function field setting, where the moment averages are taken over primitive characters of modulus $R$, where $R$ is a polynomial in $\mathbb{F}_q [T]$. We consider the behaviour as…

Number Theory · Mathematics 2020-02-27 J. C. Andrade , M. Yiasemides

We prove a formula, with power savings, for the sixth moment of Dirichlet L-functions averaged over moduli $q$, over primitive characters $\chi$ modulo $q$, and over the critical line. Our formula agrees precisely with predictions motivated…

Number Theory · Mathematics 2012-02-14 J. B. Conrey , H. Iwaniec , K. Soundararajan

Extending a result of Heath-Brown, we establish an asymptotic formula for the fourth moment of central values of Dirichlet $L$-functions attached to primitive characters $\pmod q$.

Number Theory · Mathematics 2007-05-23 K. Soundararajan