## String gravity and physics at the Planck energy scaleThe main goal and impact of modern string theory is to provide a consistent theory of gravity. This book provides an up-to-date understanding of the latest developments and current problems in string theory as applied to gravitation and physics at the Planck energy scale. It also discusses fundamental problems of quantum gravity in a modern context, independent of strings or any other models. The emphasis is on the mutual impact of string theory, gravity and cosmology. The most relevant new physics provided by strings concerns the quantization of gravity and so we must at least understand string quantization in curved space-times. Besides their obvious relevance in classical gravitation, curved space-times are also important at energies of the order of the Planck scale, where gravitational interactions are at least as important as the rest, and so can no longer be ignored. The editors have taken particular care to provide the bases of the different lines of research that are currently in contention. The reader is given an excellent opportunity to learn about the real state of the discipline, and to learn it in a critical way. |

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### Contents

Strings in Curved and Minkowski Spacetimes | 18 |

How to solve the string equations of motion in curved spacetimes? | 25 |

Selfconsistent string cosmology | 37 |

Copyright | |

23 other sections not shown

### Other editions - View all

String Gravity and Physics at the Planck Energy Scale Norma G. Sānchez,Antonino Zichichi Limited preview - 2012 |

String Gravity and Physics at the Planck Energy Scale Norma G. Sānchez,Antonino Zichichi No preview available - 2011 |

String Gravity and Physics at the Planck Energy Scale Norma G. Sānchez,Antonino Zichichi No preview available - 2012 |

### Common terms and phrases

amplitude anti de Sitter asymptotic B. L. Hu background black hole bosonic Cauchy horizon circular string classical conifold constant constraints coordinates correlation functions corresponding cosmological constant coupling curvature curved spacetime defined density perturbations described diffeomorphism dilaton discussed dynamics Einstein equations energy density entropy equations of motion Euclidean evolution expectation value fermions field theory finite flat fluctuations gauge geometry H. J. de Vega Hamiltonian horizon infinite inflation inflationary inflaton integral invariant Lett linear magnetic field mass massless metric Minkowski Minkowski spacetime moduli space momentum Nucl obtained one-loop operators oscillator parameters Phys physical Planck Planck Energy potential problem quantization quantum cosmology quantum field quantum field theory quantum gravity radiation renormalization Sanchez scalar field scale factor singularity Sitter spacetime spatial spectrum string equations string phase string solutions string theory superstring supersymmetry temperature tensor thermal vacuum variables vector wave function world-sheet WZW model zero mode