Supersymmetric null-like holographic cosmologies

Feng Li Lin, Wen Yu Wen

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


We construct a new class of 1=4-BPS time dependent domain-wall solutions with null-like metric and dilaton in type II supergravities, which admit a null-like big bang singularity. Based on the domain-wall/QFT correspondence, these solutions are dual to 1=4-supersymmetric quantum field theories living on a boundary cosmological background with time dependent coupling constant and UV cutoff. In particular we evaluate the holographic c function for the 2-dimensional dual field theory living on the corresponding null-like cosmology. We find that this c function runs in accordance with the c-theorem as the boundary universe evolves, this means that the number of degrees of freedom is divergent at big bang and suggests the possible resolution of big bang singularity.

Original languageEnglish
Article number013
JournalJournal of High Energy Physics
Issue number5
Publication statusPublished - 2006


  • AdS-CFT Correspondence
  • Gauge-gravity correspondence
  • Penrose limit and pp-wave background

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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