Low-lying Zeroes of Maass Form L-functions

The Katz-Sarnak density conjecture states that the scaling limits of the distributions of zeroes of families of automorphic L-functions agree with the scaling limits of eigenvalue distributions of classical subgroups of the unitary groups U(N). This conjecture is often tested by way of computing particular statistics, such as the one-level density, which evaluates a test function with compactly supported Fourier transform at normalized zeroes near the central point. Iwaniec, Luo, and Sarnak [ILS] studied the one-level densities of cuspidal newforms of weight k and level N . They showed in the limit as kN → ∞ that these families have one-level densities agreeing with orthogonal type for test functions with Fourier transform supported in (−2, 2). Exceeding (−1, 1) is important as the three orthogonal groups are indistinguishable for support up to (−1, 1) but are distinguishable for any larger support. We study the other family of GL2 automorphic forms over Q: Maass forms. To facilitate the analysis, we use smooth weight functions in the Kuznetsov formula which, among other restrictions, vanish to order M at the origin. For test functions with Fourier transform supported inside ( −2 + 3 2(M+1) , 2− 3 2(M+1) ) , we unconditionally prove the one-level density of the low-lying zeros of level 1 Maass forms, as the eigenvalues tend to infinity, agrees only with that of the scaling limit of orthogonal matrices. CONTENTS