229 citations · 341 across the 3 of their papers we have counts for
4 papers · 1 filter
Multidimensional Worldline Instantons
Gerald V. Dunne, Qing-hai Wang
We extend the worldline instanton technique to compute the vacuum pair production rate for spatially inhomogeneous electric background fields, with the spatial inhomogeneity being…
Fluctuations about Cosmological Instantons
Gerald V. Dunne, Qing-hai Wang
We study the semiclassical fluctuation problem around bounce solutions for a self-interacting scalar field in curved space. As in flat space, the fluctuation problem separates into…
Worldline Instantons II: The Fluctuation Prefactor
Gerald V. Dunne, Holger Gies, Christian Schubert +1
In a previous paper [1], it was shown that the worldline expression for the nonperturbative imaginary part of the QED effective action can be approximated by the contribution of a…
The C Operator in PT-Symmetric Quantum Field Theory Transforms as a Lorentz Scalar
Carl M. Bender, Sebastian F. Brandt, Jun-Hua Chen +1
A non-Hermitian Hamiltonian has a real positive spectrum and exhibits unitary time evolution if the Hamiltonian possesses an unbroken PT (space-time reflection) symmetry. The proof…