21 citations · 56 across the 8 of their papers we have counts for
8 papers
Gravitational Background of Alice-Vortices and R7-Branes
Atakan Çavuşoğlu, Mirjam Cvetič, Jonathan J. Heckman +2
Codimension-two vortex solutions are important solitonic objects in both quantum field theory and gravity. In this paper, we construct a class of codimension-two Alice-vortex solut…
Primordial Gravitational Waves in Quadratic Gravity
Jisuke Kubo, Jeffrey Kuntz
Quadratic gravity is a fourth-order (in derivatives) theory that can serve as an attractive upgrade to the standard description of gravity provided by General Relativity, thanks to…
Unitarity through PT symmetry in Quantum Quadratic Gravity
Jeffrey Kuntz
Theories described by non-Hermitian Hamiltonians are known to possess strictly positive energy eigenvalues and exhibit unitary time evolution if the Hamiltonian is symmetric under…
Extra Dimensions Beyond the Horizon
Jeffrey Kuntz, Andreas Trautner
We discuss an extra-dimensional braneworld with a 5th dimension compactified on a circle. As a characteristic feature, the warp factor is hyperbolic and separates the hidden and vi…
Spontaneous Conformal Symmetry Breaking and Quantum Quadratic Gravity
Jisuke Kubo, Jeffrey Kuntz
We investigate several quantum phenomena related to quadratic gravity after rewriting the general fourth-order action in a more convenient form that is second-order in derivatives…
Inflation with Massive Spin-2 Ghosts
Jisuke Kubo, Jeffrey Kuntz, Jonas Rezacek +1
We consider a generic model of quadratic gravity coupled to a single scalar and investigate the effects of gravitational degrees of freedom on inflationary parameters. We find that…
Analysis of Unitarity in Conformal Quantum Gravity
Jisuke Kubo, Jeffrey Kuntz
We perform a canonical quantization of Weyl's conformal gravity by means of the covariant operator formalism and investigate the unitarity of the resulting quantum theory. After re…
Unified Emergence of Energy Scales and Cosmic Inflation
Jisuke Kubo, Jeffrey Kuntz, Manfred Lindner +3
In the quest for unification of the Standard Model with gravity, classical scale invariance can be utilized to dynamically generate the Planck mass . Then, the relat…