702 citations
- National Institute for Subatomic PhysicsNL12 papers
- University of AmsterdamNL10 papers
- Centre National de la Recherche ScientifiqueFR9 papers
- Pennsylvania State UniversityUS9 papers
- University of California, BerkeleyUS9 papers
- Space Research Organisation NetherlandsNL8 papers
- The University of Texas at AustinUS8 papers
- Tsinghua UniversityCN8 papers
- Leiden UniversityNL7 papers
- Max Planck SocietyDE7 papers
- University of California, Los AngelesUS7 papers
- University of CopenhagenDK7 papers
15 papers · 1 filter
Graviton one-loop effective action and inflationary dynamics
Tomas Janssen, Shun-Pei Miao, Tomislav Prokopec
We consider the one-loop effective action due to gravitons in a FLRW background with constant epsilon=-(dH/dt)/H^2. By expanding around epsilon=0 (corresponding to an expansion aro…
Hermitian Gravity and Cosmology
Christiaan Mantz, Tomislav Prokopec
In an attempt to generalize general relativity, we propose a new Hermitian theory of gravity. Space-time is generalized to space-time-momentum-energy and both the principles of gen…
Effect of the Trace Anomaly on the Cosmological Constant
Jurjen F. Koksma, Tomislav Prokopec
It has been argued that the quantum (conformal) trace anomaly could potentially provide us with a dynamical explanation of the cosmological constant problem. In this paper, however…
A Simple Operator Check of the Effective Fermion Mode Function during Inflation
Shun-Pei Miao, R. P. Woodard
We present a relatively simple operator formalism which reproduces the leading infrared logarithm of the one loop quantum gravitational correction to the fermion mode function on a…
Two loop stress-energy tensor for inflationary scalar electrodynamics
Tomislav Prokopec, Nicholas C. Tsamis, Richard P. Woodard
We calculate the expectation value of the coincident product of two field strength tensors at two loop order in scalar electrodynamics on de Sitter background. The result agrees wi…
The Scalar Field Kernel in Cosmological Spaces
Jurjen F. Koksma, Tomislav Prokopec, Gerasimos I. Rigopoulos
We construct the quantum mechanical evolution operator in the Functional Schrodinger picture - the kernel - for a scalar field in spatially homogeneous FLRW spacetimes when the fie…