In order to validate or invalidate a large class of low energy effective theories, the swampland conjecture has attracted significant attention recently. It can be stated as inequalities on potential scalar field which is conjectured satisfy certain constraints. this work, we discuss theoretical viability deformed Starobinsky gravity in light refined conjectures. We consider deformation form [F...

We explore the embedding of phenomenological holographic models describing thermal relativistic ordered conformal phases in R2,1 SUGRA/String theory. The dual black branes a Poincare patch asymptotically AdS4 have “hair” — condensate order parameter for broken symmetry. In gravitational spontaneous symmetry breaking is represented by bulk scalar field with nontrivial potential. To construct per...

A bstract We sharpen Swampland constraints on 8d supergravity theories by studying consistency conditions worldvolume theory of 3-brane probes. Combined with a stronger form the cobordism conjecture, this leads to reconstruction compact internal geometry and implies strong restrictions gauge algebra some higher derivative terms (related level current 1-brane). In particular we argue that $$ {\m...

In light of the recent swampland conjectures, we explore quantum cosmology and eternal inflation beyond slow roll regime. We consider a model closed universe with scalar field $\phi$ in framework tunneling approach to cosmology. The potential is assumed have maximum at $\phi=0$ can be approximated its vicinity as $V(\phi)\approx 3H^{2}-\frac{1}{2}m^{2}\phi^{2}$. Using instanton method, find tha...