Publications of Michael Koehn

Koehn, M.; Lehners, J.-L.; Ovrut, B.: Non-Singular Bouncing Cosmology: Consistency of the Effective Description. Physical Review D 93, 103501 (2016)

Köhn, M.; Lavrelashvili, G. V.; Lehners, J.-L.: Towards a Solution of the Negative Mode Problem in Quantum Tunnelling with Gravity. Physical Review D 92, 023506 (2015)

Battarra, L.; Köhn, M.; Lehners, J.-L.; Ovrut, B. A.: Cosmological Perturbations Through a Non-Singular Ghost-Condensate/Galileon Bounce. Journal of Cosmology and Astroparticle Physics 2014 (7), 007 (2014)

Koehn, M.; Lehners, J.-L.; Ovrut, B. A.: Cosmological Super-Bounce. Physical Review D 90 (2), 025005 (2014)

Flohr, M.; Köhn, M.: What the characters of irreducible subrepresentations of Jordan cells can tell us about LCFT. Journal of Physics A: Mathematical and Theoretical 46 (49), 494007 (2013)

Koehn, M.; Lehners, J.-L.; Ovrut, B.: Ghost Condensate in N=1 Supergravity. Physical Review D 87 (6), 065022 (2013)

Koehn, M.; Lehners, J.-L.; Ovrut, B.: Supersymmetric cubic Galileons have ghosts. Physical Review D 88, 023528 (2013)

Fleig, P.; Koehn, M.; Nicolai, H.: On fundamental domains and volumes of hyperbolic Coxeter-Weyl groups. Letters in Mathematical Physics 100 (3), pp. 261 - 278 (2012)

Koehn, M.: Relativistic Wavepackets in Classically Chaotic Quantum Cosmological Billiards. Physical Review D 85, 063501 (2012)

Koehn, M.: Solutions of the Klein-Gordon equation in an infinite square-well potential with a moving wall. Europhysics Letters 100 (6), 60008 (2012)

Koehn, M.; Lehners, J.-L.; Ovrut, B. A.: Higher-Derivative Chiral Superfield Actions Coupled to N=1 Supergravity. Physical Review D 86 , 085019 (2012)

Koehn, M.; Lehners, J.-L.; Ovrut, B. A.: DBI Inflation in N=1 Supergravity. Physical Review D 86 (12), 123510 (2012)

Koehn, M.; Lehners, J.-L.; Ovrut, B.: Scalars with higher derivatives in supergravity and cosmology. In: Breaking of Supersymmetry and Ultraviolet Divergences in Extended Supergravity, Springer Proceedings in Physics, Vol. 153, pp. 115 - 143 . Breaking of supersymmetry and ultraviolet divergences in extended supergravity, INFN in Frascat, 2013-03. (2014)

Koehn, M.; Lehners, J.-L.; Ovrut, B.: Ghost Condensate in N=1 Supergravity. In: Breaking of Supersymmetry and Ultraviolet Divergences in Extended Supergravity; Springer Proceedings in Physics Volume 153, pp. 163 - 178. INFN-Laboratori Nazionali di Frascati School , 2013. Springer (2014)