9 citations · 21 across the 5 of their papers we have counts for
5 papers
Finite-Temperature Instantons from First Principles
Thomas Steingasser, Morgane König, David I. Kaiser
We derive the finite-temperature quantum-tunneling rate from first principles. The rate depends on both real- and imaginary-time; we demonstrate that the relevant instantons should…
Elastic Scattering of Cosmological Gravitational Wave Backgrounds: Primordial Black Holes and Stellar Objects
Marcell Howard, Morgane König
Primordial black holes (PBHs) are plausible dark matter candidates that formed from the gravitational collapse of primordial density fluctuations. Current observational constraints…
What can galaxy shapes tell us about physics beyond the standard model?
Oliver H. E. Philcox, Morgane J. König, Stephon Alexander +1
The shapes of galaxies trace scalar physics in the late-Universe through the large-scale gravitational potential. Are they also sensitive to higher-spin physics? We present a gener…
An SZ-Like Effect on Cosmological Gravitational Wave Backgrounds
Tatsuya Daniel, Marcell Howard, Morgane König
Cosmological gravitational wave backgrounds (CGWBs) are the conglomeration of unresolved gravitational wave signals from early Universe sources, which make them a promising tool fo…
An Exact Fermionic Chern-Simons-Kodama State in Quantum Gravity
Stephon Alexander, Tatsuya Daniel, Marcell Howard +1
The Chern-Simons-Kodama (CSK) state is an exact, non-perturbative wave function in the Ashtekar formulation of classical General Relativity. In this work, we find a generalized fer…