arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2104.13952gr-qccond-mat.otherhep-th
收藏

(2+1)维Casimir虫洞及其在石墨烯中的应用

Casimir Wormholes in (2+1) Dimensions with Applications to the Graphene

G. Alencar, V. B. Bezerra, C. R. Muniz

摘要:

在本文中,我们表明,在(2+1)维(3-D)的虫洞不能仅仅来源于卡西米尔能量和张力,不同于发生在4-D的情况下,在这种情况下,最近已经表明,通过直接计算的确切形状和红移函数的虫洞解决方案,这是可能的。我们表明,在一个3-D时空是不正确的,因为至少出现一个事件视界是不可避免的。我们做的分析,为大质量和无质量的费米子,以及标量场,考虑准周期性的边界条件,并发现一种可能性,以规避这样的限制是引入,除了3-D的Casimir能量密度和张力,一个宇宙学常数,嵌入在一个4-D流形的表面,并施加一个垂直的弱磁场。这导致了额外的张力,这有助于虫洞的形成。最后,我们讨论了在石墨烯片中产生类似虫洞的凝聚态物质的可能性,并分析了电子通过它的输运。

英文摘要:

In this paper we show that wormholes in (2+1) dimensions (3-D) cannot be sourced solely by both Casimir energy and tension, differently from what happens in a 4-D scenario, in which case it has been shown recently, by the direct computation of the exact shape and redshift functions of a wormhole solution, that this is possible. We show that in a 3-D spacetime the same is not true since the arising of at least an event horizon is inevitable. We do the analysis for massive and massless fermions, as well as for scalar fields, considering quasi-periodic boundary conditions and find that a possibility to circumvent such a restriction is to introduce, besides the 3-D Casimir energy density and tension, a cosmological constant, embedding the surface in a 4-D manifold and applying a perpendicular weak magnetic field. This causes an additional tension on it, which contributes to the formation of the wormhole. Finally, we discuss the possibility of producing the condensed matter analogous of this wormhole in a graphene sheet and analyze the electronic transport through it.

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。

↑