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arXiv 2203.12475math.NT
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一类自守L函数二次积分的泛下界

A universal lower bound for certain quadratic integrals of automorphic L-functions

Laurent Clozel, Peter Sarnak

摘要:

我们得到了与GL(m,A)的尖点表示有关的自守L函数L(s)的一致下界,其中A表示有理数Q的顶点,L(s)/s的绝对值平方在垂直线上的积分的一致下界(Re(s)=1/2),以及当s_0是L函数在临界线上的零点时L(s)/(s-s_0)的一致下界.对于临界带中不同阶数的垂直积分,在小阶数m下也得到了几个变式。为了证明收敛性所需的估计,我们推广了Friedlander-Iwaniec(Can. J.Math.57,2005)。在L-级数收敛的横坐标上得到了新的结果。最后,提出了一个问题的行为的二次积分时,s_0趋于无穷大,特别是黎曼ζ函数。

英文摘要:

We obtain uniform lower bounds, true for all automorphic L-functions L(s) associated to cuspidal representations of GL(m,A) where A denotes the adeles of the rationals Q, of the integral on the vertical line (Re(s)=1/2) of the absolute value squared of L(s)/s; and also of L(s)/(s-s_0) when s_0 is a zero of the L-function on the critical line. Several variants are also obtained in small degrees m, for the vertical integrals at different abscissas in the critical strip. For the estimates required to prove convergence, we are led to generalise a result of Friedlander-Iwaniec (Can. J. Math. 57,2005). We obtain new results on the abscissa of convergence of the L-series. Finally, a problem is posed about the behaviour of the quadratic integral when s_0 tends to infinity, in particular for the Riemann zeta function.

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