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Non-Vanishing of Artin-Twisted L-functions of Elliptic Curves


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1 Mathematics Institute, Zeeman Building, University of Warwick, Coventry, CV4 7AL, United Kingdom
     

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Let E be an elliptic curve and ρ an Artin representation, both defined over Q. Let p be a prime at which E has good reduction. We prove that there exists an infinite set of Dirichlet characters χ, ramified only at p, such that the Artin-twisted L-values L(E, ρ ⊗ χ,β) are nonzero when β lies in a specified region in the critical strip (assuming the conjectural continuations and functional equations for these L-functions). The new contribution of our paper is that we may choose our characters to be ramified only at one prime, which may divide the conductor of ρ.


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  • Non-Vanishing of Artin-Twisted L-functions of Elliptic Curves

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Authors

Thomas Ward
Mathematics Institute, Zeeman Building, University of Warwick, Coventry, CV4 7AL, United Kingdom

Abstract


Let E be an elliptic curve and ρ an Artin representation, both defined over Q. Let p be a prime at which E has good reduction. We prove that there exists an infinite set of Dirichlet characters χ, ramified only at p, such that the Artin-twisted L-values L(E, ρ ⊗ χ,β) are nonzero when β lies in a specified region in the critical strip (assuming the conjectural continuations and functional equations for these L-functions). The new contribution of our paper is that we may choose our characters to be ramified only at one prime, which may divide the conductor of ρ.