lee smolin claims that SUSY/string theory can account for negative (anti-DS) and zero cosmological constant, but not a positive de-sitter constant, which is what has been observed.(adsbygoogle = window.adsbygoogle || []).push({});

he also claims the kodama state in LQG has a good semiclassical limit that is GR, and incorporates a small positive CC, and that witten's paper on kodama-chern is not entirely applicable.

what's the current research on these claims?

**Physics Forums - The Fusion of Science and Community**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# A positive cosmological constant * SUSY/string theory

Loading...

Similar Threads for positive cosmological constant | Date |
---|---|

Oeckl positive boundary form of quantum theory | Aug 9, 2013 |

Euler sum of positive integers = -1/12 | Mar 3, 2013 |

Noncommuting position variables due to quantum gravity | Jan 29, 2013 |

Spin and position and mutually unbiased bases | Jul 26, 2009 |

Quantum Gravity with a Positive Cosmological Constant | Jun 7, 2005 |

**Physics Forums - The Fusion of Science and Community**