Non-local SFT tachyon and cosmology

被引：59

作者：

Koshelev, Alexey S. ^{[1
]}

机构：

[1] Univ Crete, Dept Phys, POB 2208, Iraklion 71003, Greece

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2007年 / 04期

关键词：

string field theory; cosmology of theories beyond the SM;

D O I：

10.1088/1126-6708/2007/04/029

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Cosmological scenarios built upon the generalized non-local String Field Theory and p-adic tachyons are examined. A general kinetic operator involving an infinite number of derivatives is studied as well as arbitrary parameter p. The late time dynamics of just the tachyon around the non-perturbative vacuum is shown to leave the cosmology trivial. A late time behavior of the tachyon and the scale factor of the FRW metric in the presence of the cosmological constant or a perfect fluid with w > -1 is constructed explicitly and a possibility of non-vanishing oscillations of the total effective state parameter around the phantom divide is proven.

引用

页数：19

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