Please use this identifier to cite or link to this item:
http://hdl.handle.net/2248/3250
Title: | A non-anthropic origin for a small cosmological constant |
Authors: | Sivaram, C |
Keywords: | Cosmology Cosmological Constant Early Universe: phase transitions |
Issue Date: | Nov-1999 |
Publisher: | World Scientific Publishing |
Citation: | Modern Physics Letters A, Vol. 14, No. 34, pp. 2363 - 2366 |
Abstract: | An impressive variety of recent observations which include luminosity evolutions of high redshift supernovae strongly suggest that the cosmological constant (Λ) is not zero. Even though the Λ-term may dominate cosmic dynamics at the present epoch, such a value for the vacuum energy is actually unnaturally small. The difficulties in finding a suitable explanation (based on fundamental physics) for such a small residual value for the cosmological term has led several authors to resort to an anthropic explanation for its existence. Here the author presents a few examples which invoke phase transitions in the early universe involving strong or electroweak interactions to show how the cosmical term of the correct observed magnitude can arise from fundamental physics involving gravity. |
Description: | Restricted Access |
URI: | http://hdl.handle.net/2248/3250 |
ISSN: | 0217-7323 |
Appears in Collections: | IIAP Publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
A non-anthropic origin for a small cosmological constant Restricted Access | Restricted Access | 193.42 kB | Adobe PDF | View/Open Request a copy |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.