142 citations · 900 across the 25 of their papers we have counts for
25 papers
Energy Transfer in Multi Field Inflation and Cosmological Perturbations
Amjad Ashoorioon, Axel Krause, Krzysztof Turzynski
In cascade inflation and some other string inflation models, collisions of mobile branes with other branes or orbifold planes occur and lead to interesting cosmological signatures.…
Update of D3/D7-Brane Inflation on K3 x T^2/Z_2
Michael Haack, Renata Kallosh, Axel Krause +3
We update the D3/D7-brane inflation model on K3 x T^2/Z_2 with branes and fluxes. For this purpose, we study the low energy theory including g_s corrections to the gaugino condensa…
Towards Dark Energy from String-Theory
Axel Krause
We discuss vacuum energy in string and M-theory with a focus on heterotic M-theory. In the latter theory a mechanism is described for maintaining zero vacuum energy after supersymm…
Large Gravitational Waves and Lyth Bound in Multi Brane Inflation
Axel Krause
It is shown that multi M5-brane inflation in heterotic M-theory gives rise to a detectable gravitational wave power spectrum with tensor fraction typically larger than the proj…
Chasing Brane Inflation in String-Theory
Axel Krause, Enrico Pajer
We investigate the embedding of brane anti-brane inflation into a concrete type IIB string theory compactification with all moduli fixed. Specifically, we are considering a D3-bran…
Supersymmetry Breaking with Zero Vacuum Energy in M-Theory Flux Compactifications
Axel Krause
An attractive mechanism to break supersymmetry in vacua with zero vacuum energy arose in E_8 x E_8 heterotic models with hidden sector gaugino condensate. An H-flux balances the ex…