Pre-bangian origin of our entropy and time arrow

被引：103

作者：

Veneziano, G ^{[1
]}

机构：

[1] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

来源：

PHYSICS LETTERS B | 1999年 / 454卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(99)00267-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

I argue that, in the chaotic version of string cosmology proposed recently, classical and quantum effects generate, at the time of exit to radiation, the correct amount of entropy to saturate a Hubble (or holography) entropy bound (HEB) and to identify, within our own Universe, the arrow of time. Demanding that the HEB be fulfilled at all times forces a crucial "branch change" to occur, and the so-called string phase to end at a critical value of the effective Planck mass, in agreement with previous conjectures. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：22 / 26

页数：5

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