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arXiv 0910.1669hep-ph
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超弦激发的E_6统一和阴影θ粒子的天体物理意义

Astrophysical Implications of the Superstring-Inspired E_6 Unification and Shadow Theta-Particles

C. R. Das, L. V. Laperashvili, A. Tureanu

摘要:

我们已经发展出一个概念,即普通世界(O)和镜像世界(M)或阴影世界(Sh)的平行存在。受超弦理论的启发,E_6统一在~ 10^18 GeV的尺度上恢复了破镜宇称。为了解释小的宇宙学常数,我们考虑了O世界中的E_6 -> SO(10)× U(1)_Z -和SH世界中的E '_6-> SU(6)' × SU(2)'_θ-的破缺.我们假设在阴影世界中存在阴影θ粒子和低能对称群SU(3 π '_C × SU(2 π'_L × SU(2 π '_θ × U(1 π'_Y),而不是标准模型.具有无质量规范场的附加非阿贝尔SU(2 π '_θ)群“thetons”具有宏观限制半径1/π'_θ。假设ε '_θ \approx为2.3 × 10^-3 eV,可以解释最近的天体物理测量所给出的微小宇宙学常数。寻找暗物质(DM),可以观察和研究θ粒子的各种信号。

英文摘要:

We have developed a concept of parallel existence of the ordinary (O) and mirror (M), or shadow (Sh) worlds. E_6 unification, inspired by superstring theory, restores the broken mirror parity at the scale ~ 10^18 GeV. With the aim to explain the tiny cosmological constant, we consider the breakings: E_6 -> SO(10) X U(1)_Z - in the O-world, and E'_6 -> SU(6)' X SU(2)'_θ- in the Sh-world. We assume the existence of shadow θ-particles and the low energy symmetry group SU(3)'_C X SU(2)'_L X SU(2)'_θX U(1)'_Y in the shadow world, instead of the Standard Model. The additional non-Abelian SU(2)'_θgroup with massless gauge fields, "thetons", has a macroscopic confinement radius 1/Λ'_θ. The assumption that Λ'_θ\approx 2.3 X 10^-3 eV explains the tiny cosmological constant given by recent astrophysical measurements. Searching for the Dark Matter (DM), it is possible to observe and study various signals of theta-particles.

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