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arXiv 0706.2983hep-th
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复高自旋场方程的实形式和新的精确解

Real Forms of Complex Higher Spin Field Equations and New Exact Solutions

Carlo Iazeolla, Ergin Sezgin, Per Sundell

摘要:

我们在具有(4-p,p)签名和非零宇宙学常数的时空中建立了四维高自旋规范理论.其中包括欧几里德(4,0)和克莱因(2,2)签名中涉及半平坦规范场的手征模型。除了包含de Sitter时空的最大对称解外,我们还发现:(a)SO(4-p,p)不变形变,它依赖于一个连续的和无穷多个离散的参数,包括一个秩为1的退化度规;(b)具有消失的Weyl张量和更高自旋的规范场的非最大对称解,它不同于辅助场扇区中的最大对称解;以及(c)手征模型的解,它提供了D型引力瞬子的更高自旋的推广,具有与两个主旋量的完全对称乘积成比例的Weyl张量的无限塔。这些显然是第一个精确的四维解决方案与非零质量更高的自旋领域。

英文摘要:

We formulate four dimensional higher spin gauge theories in spacetimes with signature (4-p,p) and nonvanishing cosmological constant. Among them are chiral models in Euclidean (4,0) and Kleinian (2,2) signature involving half-flat gauge fields. Apart from the maximally symmetric solutions, including de Sitter spacetime, we find: (a) SO(4-p,p) invariant deformations, depending on a continuous and infinitely many discrete parameters, including a degenerate metric of rank one; (b) non-maximally symmetric solutions with vanishing Weyl tensors and higher spin gauge fields, that differ from the maximally symmetric solutions in the auxiliary field sector; and (c) solutions of the chiral models furnishing higher spin generalizations of Type D gravitational instantons, with an infinite tower of Weyl tensors proportional to totally symmetric products of two principal spinors. These are apparently the first exact 4D solutions with non-vanishing massless higher spin fields.

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