Landau levels in the presence of a cosmic string in rainbow gravity
Sign Up to like & getrecommendations! Published in 2019 at "Annals of Physics"
DOI: 10.1016/j.aop.2019.01.004
Abstract: Abstract In this paper we analyze the energy levels of a charged scalar particle placed in the static cosmic string spacetime, under the action of a uniform magnetic field parallel to the string, in the… read more here.
Keywords: gravity; rainbow gravity; cosmic string; landau levels ... See more keywords
PDM Klein–Gordon oscillators in cosmic string spacetime in magnetic and Aharonov–Bohm flux fields within the Kaluza–Klein theory
Sign Up to like & getrecommendations! Published in 2022 at "Annals of Physics"
DOI: 10.1016/j.aop.2022.168857
Abstract: Abstract: In the cosmic string spacetime and within Kaluza-Klein theory (KKT) backgrounds (indulging magnetic and Aharonov-Bohm flux fields), we introduce and study position-dependent mass (PDM) Klein-Gordon (KG) oscillators. The effective PDM is introduced as a… read more here.
Keywords: within kaluza; kaluza klein; cosmic string; pdm ... See more keywords
Scattering cross-section in gravitating cosmic string spacetimes
Sign Up to like & getrecommendations! Published in 2021 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ac25e0
Abstract: We propose a modification of the partial wave approach to deal with the relativistic quantum scattering of bosonic and fermionic particles in a class of models concerning gravitating cosmic string spacetimes. These spacetimes are characterized… read more here.
Keywords: cosmic string; cross section; string spacetimes; gravitating cosmic ... See more keywords
Nambu-Goto dynamics of field theory cosmic string loops
Sign Up to like & getrecommendations! Published in 2023 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2023/05/035
Abstract: We perform a detailed comparison of the dynamics of cosmic string loops obtained in cosmological field theory simulations with their expected motion according to the Nambu-Goto action. We demonstrate that these loops follow the trajectories… read more here.
Keywords: theory; string loops; nambu goto; field theory ... See more keywords
Planck limits on cosmic string tension using machine learning
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab3030
Abstract: We develop two parallel machine-learning pipelines to estimate the contribution of cosmic strings (CSs), conveniently encoded in their tension (Gμ), to the anisotropies of the cosmic microwave background radiation observed by Planck. The first approach… read more here.
Keywords: machine learning; planck limits; limits cosmic; tension ... See more keywords
Complementarity between cosmic string gravitational waves and long lived particle searches in a laboratory
Sign Up to like & getrecommendations! Published in 2025 at "Physical Review D"
DOI: 10.1103/fcg5-bkbn
Abstract: Cosmic strings are powerful witnesses to cosmic events including any period of early matter domination. If such a period of matter domination was catalysed by metastable, long-lived particles, then there will be complementary signals to… read more here.
Keywords: long lived; cosmic string; gravitational waves; complementarity ... See more keywords
Gravitational radiation power spectrum of Garfinkle-Vachaspati cosmic string loops
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review D"
DOI: 10.1103/physrevd.110.083531
Abstract: We examine the power spectrum $P_n$ of the $n$th harmonic for Garfinkle-Vachaspati cosmic strings, which correspond to planar rectangular loops. While these loop tractories are self-intersecting, a slightly perturbed non-self-intersecting form of these trajectories has… read more here.
Keywords: vachaspati cosmic; cosmic string; power spectrum; garfinkle vachaspati ... See more keywords
Fermionic vacuum polarization by an Abelian magnetic tube in the cosmic string spacetime
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review D"
DOI: 10.1103/physrevd.95.045005
Abstract: In this paper, we consider a charged massive fermionic quantum field in the idealized cosmic string spacetime and in the presence of a magnetic field confined in a cylindrical tube of finite radius. Three distinct… read more here.
Keywords: tube; energy momentum; field; magnetic field ... See more keywords
Boundarylike behaviors of the resonance interatomic energy in a cosmic string spacetime
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review D"
DOI: 10.1103/physrevd.97.045007
Abstract: By generalizing the formalism proposed by Dalibard, Dupont-Roc and Cohen Tannoudji, we study the resonance interatomic energy of two identical atoms coupled to quantum massless scalar fields in a symmetric /antisymmetric entangled state in the… read more here.
Keywords: resonance interatomic; cosmic string; interatomic energy;
Effect of the cosmological constant on the deflection angle by a rotating cosmic string
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review D"
DOI: 10.1103/physrevd.97.064030
Abstract: In this article, we report the effect of the cosmological constant and the internal density energy of the cosmic string in the deflection angle of light in the spacetime of a rotating cosmic string with… read more here.
Keywords: cosmic string; rotating cosmic; string; deflection angle ... See more keywords
Cosmic string and black hole limits of toroidal Vlasov bodies in general relativity
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.99.024012
Abstract: We numerically investigate limits of a two-parameter family of stationary solutions to the Einstein-Vlasov system. The solutions are toroidal and have nonvanishing angular momentum. As the paramete ... read more here.
Keywords: black hole; toroidal vlasov; cosmic string; hole limits ... See more keywords