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<title>Yuchen Liu — Neckpinch</title><link>https://neckpinch.com/authors/yuchen-liu/</link><description>New arXiv papers by Yuchen Liu, from Neckpinch</description>
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<item><title>K-stability of special Gushel-Mukai manifolds</title><link>https://neckpinch.com/papers/2405.10797/</link><guid isPermaLink="false">arxiv:2405.10797</guid><pubDate>Fri, 17 May 2024 00:00:00 GMT</pubDate><description>Yuchen Liu, Linsheng Wang — Gushel-Mukai manifolds are specific families of n-dimensional Fano manifolds of Picard rank 1 and index n-2 where 3≤ n ≤ 6. A Gushel-Mukai n-fold is either ordinary, i.e. a hyperquadric section of a quintic Del Pezzo (n+1)-fold, or special, i.e. it admits a double cover over the quintic Del Pezzo n-fold branched along an ordinary Gushel-Mukai (n-1)-fold. In this paper, we prove that a general special Gushel-Mukai n-fold is K-stable for every 3≤ n≤ 6. Furthermore, we give a description of the first and last walls of the K-moduli of the pair (M,cQ), where M is the quintic Del Pezzo fourfold (or fivefold) and Q is an ordinary Gushel-Mukai threefold (or fourfold). Besides, we compute δ-invariants of quintic Del Pezzo fourfolds and fivefolds which were shown to be K-unstable by K. Fujita, and show that they admit Kähler-Ricci solitons.</description><category>Ricci solitons</category><category>Kähler–Ricci solitons</category><category>3-manifolds</category><category>Kähler geometry</category><category>Stability &amp; uniqueness</category><category>Kähler–Einstein &amp; K-stability</category></item>
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