Tachyon field theory description of (thermo)dynamics in dS space

	Tachyon field theory description of (thermo)dynamics in dS space
	Li HQ(李惠泉)1,2 ; Lu, J. X.3
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2016-01-05
期号	1
关键词	Tachyon Condensation D-branes p-branes
ISSN号	1029-8479
通讯作者	Li, HQ (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	In this work, we present a few pieces of evidence in support of a possible connection of the gravitational theory in dS space to the world-volume theory of unstable D-branes. We show that the action describing the geodesic motion of a massive particle (or point-like object) in static dS space turns out to be the same as that of the tachyon field theory for an unstable particle. The motion along the radial direction from the origin, a locally Minkowski spacetime, to the horizon, a locally Rindler space times a sphere, represents just the tachyon condensation process, therefore providing a geometric picture of tachyon condensation. We further study a scalar in global or flat dS and the tachyon fluctuations in a homogeneous tachyon background, representing either the full or half S-brane, on unstable D-branes and find that certain dynamics of the dS universe corresponds to that of the homogeneous full or half S-brane. The thermal temperature of tachyon radiation is found to agree with that felt by any timelike observer in dS space. In string theory context, this temperature is just the Hagedorn one, signaling a phase transition to closed strings. An understanding of this transition in the bulk dS space is also given.
学科主题	Physics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Particles & Fields
研究领域[WOS]	Physics
关键词[WOS]	OPEN STRING THEORY ; BPS D-BRANES ; HAWKING RADIATION ; MATTER
收录类别	SCI
原文出处	http://link.springer.com/article/10.1007/JHEP01(2016)022?view=classic
语种	英语
WOS记录号	WOS:000367749000001
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/9395]
专题	云南天文台_高能天体物理研究组云南天文台_中国科学院天体结构与演化重点实验室
作者单位	1.Yunnan Observatories, CAS, Kunming, 650011, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, CAS, Kunming, 650011, China 3.Interdisciplinary Center for Theoretical Study, University of Science and Technology of China, Hefei, 230026, China
推荐引用方式 GB/T 7714	Li HQ,Lu, J. X.. Tachyon field theory description of (thermo)dynamics in dS space[J]. JOURNAL OF HIGH ENERGY PHYSICS,2016(1).
APA	Li HQ,&Lu, J. X..(2016).Tachyon field theory description of (thermo)dynamics in dS space.JOURNAL OF HIGH ENERGY PHYSICS(1).
MLA	Li HQ,et al."Tachyon field theory description of (thermo)dynamics in dS space".JOURNAL OF HIGH ENERGY PHYSICS .1(2016).