Is Imaginary Starobinsky Model Real?

Andrei Linde; Bert Vercnocke; Renata Kallosh; Wissam Chemissany

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Is Imaginary Starobinsky Model Real?

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arxiv 1403.7189 v2 pith:MSXQ75PG submitted 2014-03-27 hep-th astro-ph.COgr-qchep-ph

Is Imaginary Starobinsky Model Real?

Renata Kallosh , Andrei Linde , Bert Vercnocke , Wissam Chemissany This is my paper

classification hep-th astro-ph.COgr-qchep-ph

keywords modelstarobinskydrivenfieldimaginaryinflationpartreal

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We investigate the recently proposed possibility of chaotic inflation with respect to the imaginary part of the field T in a supersymmetric embedding of the Starobinsky model. We show that the stage of rapid expansion driven by Im T in this model ends almost instantly, and the subsequent stages of inflation are driven by the real part of the field T, as in the standard Starobinsky model. Thus, the Starobinsky model and its supersymmetric generalizations remain disfavored by the recent BICEP2 data.

Is Imaginary Starobinsky Model Real?

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