arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2106.09601hep-thgr-qcmath-phmath.MP
收藏

通过变形微分分次Poisson代数的具有弦流$Q$和$R$的引力action

A gravitational action with stringy $Q$ and $R$ fluxes via deformed differential graded Poisson algebras

E. Boffo, P. Schupp

摘要:

研究了$2$ -分次Poisson代数的变形,其中相空间变量的函数由奇偶奇速度的线性函数补。变形由$2$形式的$B$场和双矢量$Π$携带,我们认为它们是弦论紧化背景下产生的几何和非几何通量$H$、$f$、$Q$和$R$的规范场。在点粒子与$U(1)$规范场的相互作用中,用来变形泊松括号的技术是广为人知的,但在非阿贝尔或更高自旋场的情况下则不然。这种构造与广义几何密切相关:当代数中的一个元素平方为零时,分次辛图像等价于广义切丛$E \cong TM \oplus T^{*}M$上的精确柯朗代数体,以及它的更高规范理论。一个特殊的幂等分次标准变换等价于广义度量。侧重于广义微分几何方面,我们构建了一个行动功能的Ricci张量的一个连接上的covectors,编码的动力学引力理论的逆变度量张量和$Q$和$R$通量。我们还提取了向量场上的一个连接,并确定了一个包含度规和$H$ -通量的非对称度规引力理论。

英文摘要:

We study a deformation of a $2$-graded Poisson algebra where the functions of the phase space variables are complemented by linear functions of parity odd velocities. The deformation is carried by a $2$-form $B$-field and a bivector $Π$, that we consider as gauge fields of the geometric and non-geometric fluxes $H$, $f$, $Q$ and $R$ arising in the context of string theory compactification. The technique used to deform the Poisson brackets is widely known for the point particle interacting with a $U(1)$ gauge field, but not in the case of non-abelian or higher spin fields. The construction is closely related to Generalized Geometry: With an element of the algebra that squares to zero, the graded symplectic picture is equivalent to an exact Courant algebroid over the generalized tangent bundle $E \cong TM \oplus T^{*}M$, and to its higher gauge theory. A particular idempotent graded canonical transformation is equivalent to the generalized metric. Focusing on the generalized differential geometry side we construct an action functional with the Ricci tensor of a connection on covectors, encoding the dynamics of a gravitational theory for a contravariant metric tensor and $Q$ and $R$ fluxes. We also extract a connection on vector fields and determine a non-symmetric metric gravity theory involving a metric and $H$-flux.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑