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5 papers · 2 filters
Matter bounce cosmology with a generalized single field: non-Gaussianity and an extended no-go theorem
Yu-Bin Li, Jerome Quintin, Dong-Gang Wang +1
We extend the matter bounce scenario to a more general theory in which the background dynamics and cosmological perturbations are generated by a -essence scalar field with an ar…
Bootstrapping a Five-Loop Amplitude Using Steinmann Relations
Simon Caron-Huot, Lance J. Dixon, Andrew McLeod +1
The analytic structure of scattering amplitudes is restricted by Steinmann relations, which enforce the vanishing of certain discontinuities of discontinuities. We show that these…
Inflation from Nilpotent Kähler Corrections
Evan McDonough, Marco Scalisi
We develop a new class of supergravity cosmological models where inflation is induced by terms in the Kähler potential which mix a nilpotent superfield with a chiral sector …
Black Hole Formation in AdS Einstein-Gauss-Bonnet Gravity
Nils Deppe, Allison Kolly, Andrew R. Frey +1
AdS spacetime has been shown numerically to be unstable against a large class of arbitrarily small perturbations. In arXiv:1410.1869, the authors presented a preliminary study of t…
Knot Invariants and M-Theory I: Hitchin Equations, Chern-Simons Actions, and the Surface Operators
Keshav Dasgupta, Veronica Errasti Diez, P. Ramadevi +1
Recently Witten introduced a type IIB brane construction with certain boundary conditions to study knot invariants and Khovanov homology. The essential ingredients used in his work…