76 citations · 448 across the 31 of their papers we have counts for
31 papers
What happens to topological invariants (and black holes) in singularity-free theories?
Jens Boos
Potentials arising in ultraviolet-completed field theories can be devoid of singularities, and hence render spacetimes simply connected. This challenges the notion of topological i…
Note on black holes with kilometer-scale ultraviolet regulators
Jens Boos, Christopher D. Carone
Regular black hole metrics involve a universal, mass-independent regulator that can be up to O(700) km while remaining consistent with terrestrial tests of Newtonian gravity and as…
Regular black hole from a confined spin connection in Poincare gauge gravity
Jens Boos
Within the asymptotic safety program, it is possible to construct renormalization group (RG) improved spacetimes by replacing the gravitational coupling by its running counterp…
Black hole entropy contributions from Euclidean cores
Jens Boos
The entropy of a Schwarzschild black hole, as computed via the semiclassical Euclidean path integral in a stationary phase approximation, is determined not by the on-shell value of…
Asymptotically nonlocal gravity
Jens Boos, Christopher D. Carone
Asymptotically nonlocal field theories interpolate between Lee-Wick theories with multiple propagator poles, and ghost-free nonlocal theories. Previous work on asymptotically nonlo…
Asymptotically safe dark matter with gauged baryon number
Jens Boos, Christopher D. Carone, Noah L. Donald +1
We consider the inclusion of TeV-scale, fermionic dark matter in an asymptotically safe model of gauged baryon number that has been recently proposed [Phys. Rev. D 106, no. 3, 0350…
Asymptotic safety and gauged baryon number
Jens Boos, Christopher D. Carone, Noah L. Donald +1
We consider a model with gauged baryon number that may be rendered asymptotically safe when gravitational effects above the Planck scale are taken into account. We study the ultrav…
Asymptotic nonlocality in non-Abelian gauge theories
Jens Boos, Christopher D. Carone
Asymptotically nonlocal field theories represent a sequence of higher-derivative theories whose limit point is a ghost-free, infinite-derivative theory. Here, we extend previous wo…
Asymptotic nonlocality in gauge theories
Jens Boos, Christopher D. Carone
Asymptotically nonlocal field theories represent a sequence of higher-derivative theories whose limit point is a ghost-free, infinite-derivative theory. Here we extend this framewo…
Asymptotic nonlocality
Jens Boos, Christopher D. Carone
We construct a theory of real scalar fields that interpolates between two different theories: a Lee-Wick theory with propagator poles, including Lee-Wick partners, and a…
Non-singular "Gauss'' black hole from non-locality
Jens Boos
Cutting out an infinite tube around formally removes the Schwarzschild singularity, but without a physical mechanism this procedure seems ad hoc and artificial. In this paper…
Non-locality and gravitoelectromagnetic duality
Jens Boos, Ivan Kolář
The weak-field Schwarzschild and NUT solutions of general relativity are gravitoelectromagnetically dual to each other, except on the positive -axis. The presence of non-localit…
Retarded field of a uniformly accelerated source in non-local scalar field theory
Ivan Kolář, Jens Boos
We study the retarded field sourced by a uniformly accelerated particle in a non-local scalar field theory. While the presence of non-locality regularizes the field at the location…
Ultrarelativistic charged and magnetized objects in non-local ghost-free electrodynamics
Jens Boos, Valeri P. Frolov, Jose Pinedo Soto
We study a non-local ghost-free Lorentz invariant modification of the Maxwell equations in four- and higher-dimensional flat spacetimes. We construct solutions of these equations f…
Resonant particle creation by a time-dependent potential in a nonlocal theory
Jens Boos, Valeri P. Frolov, Andrei Zelnikov
Considering an exactly solvable local quantum theory of a scalar field interacting with a -shaped time-dependent potential we calculate the Bogoliubov coefficients analytically…
Effects of Non-locality in Gravity and Quantum Theory
Jens Boos
Spacetime---the union of space and time---is both the actor and the stage during physical processes in our fascinating Universe. In Lorentz invariant local theories, the existence…
Ultrarelativistic spinning objects in non-local ghost-free gravity
Jens Boos, Jose Pinedo Soto, Valeri P. Frolov
We study the gravitational field of ultrarelativistic spinning objects (gyratons) in a modified gravity theory with higher derivatives. In particular, we focus on a special class o…
Angle deficit & non-local gravitoelectromagnetism around a slowly spinning cosmic string
Jens Boos
Cosmic strings, as remnants of the symmetry breaking phase in the Early Universe, may be susceptible to non-local physics. Here we show that the presence of a Poincaré-invariant no…
Ghost-free modification of the Polyakov action and Hawking radiation
Jens Boos, Valeri P. Frolov, Andrei Zelnikov
In this paper we discuss possible effects of non-locality in black hole spacetimes. We consider a two-dimensional theory in which the action describing matter is a ghost-free modif…
On thermal field fluctuations in ghost-free theories
Jens Boos, Valeri P. Frolov, Andrei Zelnikov
We study the response of a scalar thermal field to a -probe in the context of non-local ghost-free theories. In these theories a non-local form factor is inserted into the kinet…
Probing the vacuum fluctuations in scalar ghost-free theories
Jens Boos, Valeri P. Frolov, Andrei Zelnikov
We discuss the response of vacuum fluctuations to a static potential in the context of massive, ghost-free infinite-derivative scalar field theories in two dimensions. For the spec…
Premetric teleparallel theory of gravity and its local and linear constitutive law
Yakov Itin, Yuri N. Obukhov, Jens Boos +1
We continue to investigate the premetric teleparallel theory of gravity (TG) with the coframe (tetrad) as gravitational potential. We start from the field equations and a local and…
Quantum scattering on a delta potential in ghost-free theory
Jens Boos, Valeri P. Frolov, Andrei Zelnikov
We discuss the quantum-mechanical scattering of a massless scalar field on a -potential in a ghost-free theory and obtain analytic solutions for the scattering coefficients. Due…
Flash Temperature and Force Measurements in Single Diamond Scratch Tests
Mansur Akbari, Mikhail Kliuev, Jens Boos +1
Analysis of the highest temperature in the machining processes, namely the flash temperature, helps to understand the physics of the process, to improve cutting tool geometry, and…