PIRSA:07090029

K-Essence, superluminal propagation, causality and emergent geometry

Vikman, A. (2007). K-Essence, superluminal propagation, causality and emergent geometry. Perimeter Institute. https://pirsa.org/07090029

Vikman, Alex. K-Essence, superluminal propagation, causality and emergent geometry. Perimeter Institute, Sep. 14, 2007, https://pirsa.org/07090029 

          @misc{ pirsa_PIRSA:07090029,
            doi = {10.48660/07090029},
            url = {https://pirsa.org/07090029},
            author = {Vikman, Alex},
            keywords = {},
            language = {en},
            title = {K-Essence, superluminal propagation, causality and emergent geometry},
            publisher = {Perimeter Institute},
            year = {2007},
            month = {sep},
            note = {PIRSA:07090029 see, \url{https://pirsa.org}}
          }

Alex Vikman New York University (NYU)

DOI 10.48660/07090029
Collection
Talk Type Conference

Abstract

The k-essence theories admit the superluminal propagation of the perturbations on classical nontrivial backgrounds. In this talk I will review our arguments from arXiv:0708.0561v1 and show that in spite of the superluminal propagation the causal paradoxes do not arise in these theories and in this respect they are not less safe than General Relativity.