A new approach to quintessence and a solution of multiple attractors

作者：Zhou Shuang Yong^*

来源：Physics Letters B, 2008, 660(1-2): 7-12.

DOI：10.1016/j.physletb.2007.12.020

We take a new approach to construct quintessential models. With this approach, we first easily obtain a tracker solution that is different from those discovered before and straightforwardly find a solution of multiple attractors, i.e., a solution with more than one attractor for a given set of parameters. Then we propose a scenario of quintessence where the field jumps out of the scaling attractor to the de Sitter-like attractor, by introducing a field whose value changes a certain amount in a short time, leading to the current acceleration. We also calculate the change the field needs for a successful jump and suggest a possible mechanism that involves spontaneous symmetry breaking to realize the sudden change of the field value.

• 出版日期2008-2-14
• 单位山东大学