Results 11 to 20 of about 1,223,026 (285)

New application of the Killing vector field formalism: modified periodic potential and two-level profiles of the axionic dark matter distribution

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
We consider the structure of halos of the axionic dark matter, which surround massive relativistic objects with static spherically symmetric gravitational field and monopole-type magneto-electric fields.
Alexander B. Balakin, Dmitry E. Groshev
doaj   +1 more source

Numerical relativity simulation of GW150914 beyond general relativity [PDF]

open access: yes, 2020
We produce the first astrophysically-relevant numerical binary black hole gravitational waveform in a higher-curvature theory of gravity beyond general relativity.
Moxon, Jordan   +4 more
core   +2 more sources

Is the Axionic Dark Matter an Equilibrium System?

open access: yesUniverse, 2020
We consider an axionic dark matter model with a modified periodic potential for the pseudoscalar field in the framework of the axionic extension of the Einstein-aether theory.
Alexander B. Balakin   +1 more
doaj   +1 more source

Towards Multifractality through an Ernst-Type Potential in Complex Systems Dynamics

open access: yesEntropy, 2023
Some possible correspondences between the Scale Relativity Theory and the Space–Time Theory can be established. Since both the multifractal Schrödinger equation from the Scale Relativity Theory and the General Relativity equations for a gravitational ...
Vlad Ghizdovat   +5 more
doaj   +1 more source

Spontaneous Color Polarization as A Modus Originis of the Dynamic Aether

open access: yesUniverse, 2020
We suggest the phenomenological model of emergence of the dynamic aether as a result of decay of the SU(N) symmetric field configuration containing the multiplet of vector fields.
Alexander Balakin, Gleb Kiselev
doaj   +1 more source

Carroll Expansion of General Relativity

open access: yesSciPost Physics, 2022
We study the small speed of light expansion of general relativity, utilizing the modern perspective on non-Lorentzian geometry. This is an expansion around the ultra-local Carroll limit, in which light cones close up. To this end, we first rewrite the
Dennis Hansen, Niels A. Obers, Gerben Oling, Benjamin T. Søgaard
doaj   +1 more source

Birefringence induced by pp-wave modes in an electromagnetically active dynamic aether

open access: yesEuropean Physical Journal C: Particles and Fields, 2017
In the framework of the Einstein–Maxwell-aether theory we study the birefringence effect, which can occur in the pp-wave symmetric dynamic aether. The dynamic aether is considered to be a latently birefringent quasi-medium, which displays this hidden ...
Timur Yu. Alpin, Alexander B. Balakin
doaj   +1 more source

Noncommutative General Relativity [PDF]

open access: yes, 2005
We define a theory of noncommutative general relativity for canonical noncommutative spaces. We find a subclass of general coordinate transformations acting on canonical noncommutative spacetimes to be volume-preserving transformations.
A. Einstein   +4 more
core   +3 more sources

Einstein–Maxwell-axion theory: dyon solution with regular electric field

open access: yesEuropean Physical Journal C: Particles and Fields, 2017
In the framework of the Einstein–Maxwell-axion theory we consider static spherically symmetric solutions which describe a magnetic monopole in the axionic environment.
Alexander B. Balakin, Alexei E. Zayats
doaj   +1 more source

Testing General Relativity [PDF]

open access: yes, 2015
This lecture will present a review of the past and present tests of the General Relativity theory. The essentials of the theory will be recalled and the measurable effects will be listed and analyzed.
Tartaglia, Angelo
core   +2 more sources

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