# k-Essence, Avoidance of the Weinberg's Cosmological Constant No-Go Theorem and Other Dark Energy Effects of Two Measures Field Theory

@article{Guendelman2006kEssenceAO, title={k-Essence, Avoidance of the Weinberg's Cosmological Constant No-Go Theorem and Other Dark Energy Effects of Two Measures Field Theory}, author={Eduardo I. Guendelman and Alexander B. Kaganovich}, journal={arXiv: General Relativity and Quantum Cosmology}, year={2006} }

The dilaton-gravity sector of the Two Measures Field Theory (TMT) is explored in detail in the context of cosmology. The model possesses scale invariance which is spontaneously broken due to the intrinsic features of the TMT dynamics. The dilatondependence of the effective Lagrangian appears only as a result of the spontaneous breakdown of the scale invariance. If no fine tuning is made, the effective �-Lagrangian p(�,X) depends quadratically upon the kinetic energy X. Hence TMT may represent…

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