Inflation and string cosmology

  title={Inflation and string cosmology},
  author={Andrei Linde},
  journal={Fortschritte der Physik},
  • Andrei Linde
  • Published 20 July 2001
  • Physics
  • Fortschritte der Physik
I give a brief review of inflationary theory and of its recent progress related to string cosmology. 

Inflation and String Theory

We review cosmological inflation and its realization in quantum field theory and in string theory. This material is a portion of a book, also entitled "Inflation and String Theory", to be published

On the Problem of Initial Conditions for Inflation

I review the present status of the problem of initial conditions for inflation and describe several ways to solve this problem for many popular inflationary models, including the recent generation of

Assisted inflation from geometric tachyon

We study the effect of rolling of N D3-branes in the vicinity of NS5-branes. We find out that this system coupled with the four dimensional gravity gives the slow roll assisted inflation of the

Challenges for string cosmology

We critically assess the twin prospects of describing the observed universe in string theory, and using cosmological experiments to probe string theory. For the purposes of this short review, we

Topics in Cosmology

These lectures present a brief review of inflationary cosmol ogy, provide an overview of the theory of cosmological perturbations, and then focus on the conceptual problems of the current paradigm of

Conceptual Problems of Inflationary Cosmology and a New Approach to Cosmological Structure Formation

In spite of its great phenomenological success, current models of scalar field-driven inflation suffer from important unresolved conceptual issues. New fundamental physics will be required to address

Inflationary Cosmology after Planck 2013

I give a general review of inflationary cosmology and of its present status, in view of the 2013 data release by the Planck satellite. A specific emphasis is given to the new broad class of theories,

Lectures on cosmic inflation and its potential stringy realizations

These notes present a brief introduction to hot big bang cosmology and cosmic inflation, together with a selection of some recent attempts to embed inflation into string theory. They provide a

Open string tachyon is the stringy inflaton

Regarding the current status of the superstring theory, despite its fully developed contents of all interactions in nature, it is no doubt that unfortunately it lacks a well established early



Towards inflation in string theory

I will discuss the development of inflationary theory and its present status, including recent progress in describing de Sitter space and inflationary universe in string theory.

Physics of String Flux Compactifications

We provide a qualitative review of flux compactifications of string theory, focusing on broad physical implications and statistical methods of analysis.

Lectures on string/brane cosmology

An overview of some cosmological aspects of string theory is presented. Recent developments are emphasized, especially the attempts to derive inflation or alternatives to inflation from the dynamics


A new version of the inflationary universe scenario is suggested which provides a possible solution of the cosmological singularity problem

Locally supersymmetric cosmology and the gauge hierarchy

We motivate and present a locally supersymmetric theory that satisfies all the constraints for a successful, new inflationary-universe scenario, and has a naturally light gravitino. The reheating

Extended inflationary cosmology.

A new type of inflationary scenario based on metric formulations of gravity different from that of Einstein, e.g., Brans-Dicke theory of gravity is presented, which can be completed via bubble nucleation and fine tuning of an effective potential to obtain a slow-rollover transition.