149 citations · 614 across the 18 of their papers we have counts for
4 papers · 1 filter
Black Hole Entropy in General Relativity
Thomas C. Bachlechner
The Bekenstein-Hawking formula relates the black hole entropy and horizon area. Semiclassical entropy computations have relied on an action principle that fixes a gauge dependent a…
Axion Landscape Cosmology
Thomas C. Bachlechner, Kate Eckerle, Oliver Janssen +1
We study the cosmology of complex multi-axion theories. With O(100) fields and GUT scale energies these theories contain a vast number of vacua, inflationary trajectories and a nat…
Vacuum Decay in General Relativity
Thomas C. Bachlechner
We provide a novel, concise and self-contained evaluation of true- and false vacuum decay rates in general relativity. We insist on general covariance and choose observable boundar…
Action Principle for Isotropic General Relativity
Thomas C. Bachlechner
We study the generally covariant theory governing an isotropic spacetime region with uniform energy density. Gibbons, Hawking and York showed that fixing the induced boundary metri…