3 papers
gr-qc2025
Exact Kerr--Schild spacetimes from linearized kinetic gravity braiding
Bence Juhász, László Ãrpád Gergely
We generalize our recent work on k-essence sourcing Kerr--Schild spacetimes to kinetic gravity braiding scalar field. For k-essence, in order a perturbative Kerr--Schild type solut…
gr-qc2025
K-essence sources of Kerr-Schild spacetimes
Bence Juhász, László Ãrpád Gergely
We extend a result by one of the authors, established for nonvacuum Einstein gravity, to minimally coupled k-essence scalar-tensor theories. First we prove that in order to source…
quant-ph2024
On Hamiltonian formulations of the Dirac system
Bence Juhász, László Ãrpád Gergely
We extend a previously successful discussion of the constrained Schrödinger system through the Dirac--Bergmann algorithm to the case of the Dirac field. In order to follow the ana…