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arXiv · 1109.1783

The distribution of the logarithm in an orthogonal and a symplectic family of $L$-functions

Bob Hough
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Abstract

We consider the logarithm of the central value $\log L(1/2)$ in the orthogonal family ${L(s,f)}_{f \in H_k}$ where $H_k$ is the set of weight $k$ Hecke-eigen cusp form for $SL_2(\mathbb{Z})$, and in the symplectic family ${L(s,\chi_{8d})}_{d \asymp D}$ where $\chi_{8d}$ is the real character associated to fundamental discriminant $8d$. Unconditionally, we prove that the two distributions are asymptotically bounded above by Gaussian distributions, in the first case of mean $-\frac{1}{2} \log \log k$ and variance $\log \log k$, and in the second case of mean $\frac{1}{2}\log \log D$ and variance $\log \log D$. Assuming both the Riemann and Zero Density Hypotheses in these families we obtain the full normal law in both families, confirming a conjecture of Keating and Snaith.

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Bob Hough. 2011-09-08. The distribution of the logarithm in an orthogonal and a symplectic family of $L$-functions. https://arxiv.org/abs/1109.1783

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