On the local Langlands correspondence: New examples from the epipelagic zone

On the local Langlands correspondence: New examples from the epipelagic zone
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关于当地的朗兰兹信件:来自上层带的新例子

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发表时间:
2016
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通讯作者:
Beth Romano
Beth Romano
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作者:
Beth Romano

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猜想的局部朗兰兹对应(LLC)可以被认为是局部类域论的推广:给定 Qp 的有限域外延 k 上的分裂约简群 G,它预测 G(k) 的每个不可约超尖峰表示应该对应于 k 的有限伽罗瓦域外延,以某种方式唯一表征。对于大素数 p,LLC 已在许多情况下得到证明,但当 p 很小时,LLC 仍然很神秘。在 Reeder-Yu 的工作基础上,杰西卡·芬岑 (Jessica Fintzen) 和我发现了小 p 的新超尖峰表示,每个表示都应对应于一个广泛分支的场扩展。在我的演讲中,我将描述 G = G2 时的情况的表示和相应的字段扩展。
The conjectural local Langlands correspondence (LLC) can be thought of as a generalization of local class field theory: given a split reductive group G over a finite field extension k of Qp, it predicts that every irreducible supercuspidal representation of G(k) should correspond to a finite, Galois field extension of k, uniquely characterized in some way. The LLC has been proven in many cases for large primes p, but remains mysterious when p is small. Building on work of Reeder-Yu, Jessica Fintzen and I have found new supercuspidal representations for small p, each of which should correspond to a wildly ramified field extension. In my talk, I will describe both representations and corresponding field extensions for the case when G = G2.