arXiv subjects

Yusuke Nishinaka

Publications and source records attributed to Yusuke Nishinaka.

4 recordsLinked to original sources

arXiv2025

Factorization envelopes and enveloping vertex algebras

We construct a factorization algebra, via the factorization envelope, starting from a Lie conformal algebra, and prove that the associated vertex algebra is isomorphic to its enveloping vertex algebra. Our construction generalizes the Kac--Moody factorization algebra of Costello--Gwilliam and the Virasoro factorization algebra of Williams. Moreover, by considering the super analogue of this construction, we obtain new factorization algebras corresponding to vertex superalgebras, such as the Neveu--Schwarz vertex superalgebra and the $N=2$ vertex superalgebra.

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arXiv2025

A note on vertex algebras and Costello-Gwilliam factorization algebras

We show that the construction of vertex algebras from Costello-Gwilliam factorization algebras on $\mathbb{C}$ can be achieved without the discreteness condition on the weight spaces. Furthermore, we construct locally constant factorization algebras from commutative vertex algebras, and discuss the relationship between this construction and the jet algebras of commutative algebras.

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arXiv2023

Algebraic operad of SUSY vertex algebra

We introduce algebraic operads $\mathcal{P}^{\text{ch}N_W=N}$ and $\mathcal{P}^{\text{ch}N_K=N}$ encoding the structures of $N_W=N$ and $N_K=N$ SUSY vertex algebras, and study the corresponding cohomology theory. Our operad is a SUSY analogue of the operad $P^{\text{ch}}$ introduced by Bakalov, De Sole, Heluani and Kac (2019) as a purely algebraic translation of the chiral operad of Beilinson and Drinfeld.

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arXiv2023

Algebraic operad of SUSY Poisson vertex algebra

As a continuation of our study (Y.N., S.Y., arXiv:2209.14617) on the algebraic operad of SUSY vertex algebras, we introduce the SUSY coisson operad, which encodes the structures of SUSY Poisson vertex algebras. Our operad is a natural SUSY analogue of the operad encoding the structures of Poisson vertex algebras introduced by Bakalov, De Sole, Heluani and Kac (2019). We also give an embedding of the associated graded of the SUSY chiral operad into the SUSY coisson operad in the filtered case.

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