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题名: Evidence for non-vanishing cosmological constant in non-SUSY superstring models
作者: Iengo, R ;  Zhu, CJ
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 2000
期号: 4, 页码:-
关键词: MODULAR INVARIANCE ;  STRING MODELS ;  CONSTRUCTION
学科分类: Physics
通讯作者: Iengo, R , SISSA, Via Beirut 4, I-34013 Trieste, Italy.
部门归属: SISSA, I-34013 Trieste, Italy; Ist Nazl Fis Nucl, Sez Trieste, I-34013 Trieste, Italy; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: We reanalyse the computation of the cosmological constant Lambda at two loops in recently proposed superstring models without massless gravitini, both in the theta-function based formalism and by a detailed computation in the more explicit hyperelliptic description of the underlying genus two Riemann surface. Lambda is expressed as the integral over the surface moduli of an amplitude which is zero if SUSY is not completely broken, but we find it to be non vanishing in the SUSY breaking models which can be given an explicitly workable fermionic formulation. Thus unfortunately the issue of getting realistic and perturbatively viable models from Superstring Theory remains open.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000088805700028
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12991
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Iengo, R,Zhu, CJ. Evidence for non-vanishing cosmological constant in non-SUSY superstring models[J]. JOURNAL OF HIGH ENERGY PHYSICS,2000(4):-.
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