Bouncing inflation in nonlinear $R^2+R^4$ gravitational model

Phys.Rev.D81:124002,2010 We study a gravitational model with curvature-squared $R^2$ and curvature-quartic $R^4$ nonlinearities. The effective scalar degree of freedom $\phi$ (scalaron) has a multi-valued potential $U(\phi)$ consisting of a number of branches. These branches are fitted with each oth...

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Hauptverfasser:	Saidov, Tamerlan, Zhuk, Alexander
Format:	Artikel
Sprache:	eng
Schlagworte:	Physics - General Relativity and Quantum Cosmology Physics - High Energy Astrophysical Phenomena Physics - High Energy Physics - Phenomenology Physics - High Energy Physics - Theory
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