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Non- Gaussianity in single field models without slow-roll

This presentation discusses the most general Lorentz invariant action for a single scalar field minimally coupled to gravity, focusing on the properties of non-Gaussianity in cosmological perturbations without the slow-roll approximation. Research highlights include various forms of non-Gaussianity and constraints from strong coupling, with contributions from notable studies. Visualizations and plots are used to clarify concepts and results, showcasing the evolving understanding of inflationary cosmology through recent advancements.

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Non- Gaussianity in single field models without slow-roll

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  1. Non-Gaussianityin single fieldmodelswithout slow-roll Johannes Noller, Imperial College London CosmologymeetsParticlePhysics, DESY, Hamburg, 28/09/2011

  2. The most general Lorentz invariant action for a single scalar field minimally coupled to gravity that contains at most first derivatives of the field

  3. cf. Chen ’10 , Khoury, Piazza ‘09 , Senatore et al. ‘09 , Seery, Lidsey ‘05 Plots by: Baumann; Renaux-Petel, Chen; JN

  4. Agarwal & Bean ’09, Lorenz et al. ’08, Lidsey & Huston ’07, Stewart & Lyth ‘93

  5. Running Non-Gaussianity cf. JN & Magueijo ‘11 , Byrnes et al. ’10, Khoury & Piazza ‘09, LoVerde et al. ‘08

  6. Running Non-Gaussianity cf. JN & Magueijo ‘11 , Byrnes et al. ’10, Khoury & Piazza ‘09, LoVerde et al. ‘08 Strong coupling constraints cf. Baumann et al. ‘11, Senatore et al. ‘09, Cheung et al. ‘07

  7. LoVerde et al. ’08, Creminelli et al. ’06 Plots from LoVerde et al. ‘08

  8. JN & Magueijo ‘11, Magueijo, JN, Piazza ’10, Khoury & Piazza ‘09

  9. JN & Magueijo ‘11, Magueijo, JN, Piazza ’10, Khoury & Piazza ‘09

  10. Thank you! JN & Magueijo, (PRD 83, 103511), arXiv:1102.0275

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