Entropic force scenarios and eternal inflation

Taotao Qiu and Emmanuel N. Saridakis
Phys. Rev. D 85, 043504 – Published 6 February 2012

Abstract

We examine various entropic inflation scenarios, under the light of eternality. After describing the inflation realization and the normal condition for inflation to last at the background level, we investigate the conditions for eternal inflation with the effect of thermal fluctuations produced from standard radiation and from the holographic screen. Furthermore, we incorporate stochastic quantum fluctuations through a phenomenological, Langevin analysis, studying whether they can affect the inflation eternality. In one-holographic-screen scenarios eternality can be easily obtained, while in double-screen considerations inflation is eternal only in the high-energy regime. Thus, from the cosmological point of view, one should take these into account before he can consider entropic gravity as a candidate for the description of nature. However, from the string theory point of view, inflation eternality may form the background for the “landscape” of string or M theory vacua, leading to new perspectives in entropy gravity.

  • Received 16 July 2011

DOI:https://doi.org/10.1103/PhysRevD.85.043504

© 2012 American Physical Society

Authors & Affiliations

Taotao Qiu1,2,3,* and Emmanuel N. Saridakis4,5,†

  • 1Department of Physics, Chung-Yuan Christian University, Chung-li 320, Taiwan
  • 2Department of Physics and Center for Theoretical Sciences, National Taiwan University, Taipei 10617, Taiwan
  • 3Leung Center for Cosmology and Particle Astrophysics, National Taiwan University, Taipei 106, Taiwan
  • 4CASPER, Physics Department, Baylor University, Waco, Texas 76798-7310, USA
  • 5National Center for Theoretical Sciences, Hsinchu, Taiwan 300

  • *xsjqiu@gmail.com
  • Emmanuel_Saridakis@baylor.edu

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 85, Iss. 4 — 15 February 2012

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review D

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×