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Constraining D-foam via the 21-cm Line
We have suggested earlier that D-particles, which are stringy space-time defects predicted in brane-inspired models of the Universe, might constitute a component of dark matter, and that they might contribute to the masses of singlet fermions that could provide another component. Interactions of the...
Autores principales: | , , |
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Lenguaje: | eng |
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2018
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.99.015031 http://cds.cern.ch/record/2643826 |
_version_ | 1780960333665402880 |
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author | Ellis, John Mavromatos, Nick E. Nanopoulos, Dimitri V. |
author_facet | Ellis, John Mavromatos, Nick E. Nanopoulos, Dimitri V. |
author_sort | Ellis, John |
collection | CERN |
description | We have suggested earlier that D-particles, which are stringy space-time defects predicted in brane-inspired models of the Universe, might constitute a component of dark matter, and that they might contribute to the masses of singlet fermions that could provide another component. Interactions of the quantum-fluctuating D-particles with matter induce vector forces that are mediated by a massless effective U(1) gauge field, the “D-photon,” which is distinct from the ordinary photon and has different properties from dark photons. We discuss the form of interactions of D-matter with conventional matter induced by D-photon exchange and calculate their strength, which depends on the density of D-particles. Observations of the hydrogen 21 cm line at redshifts ≳15 can constrain these interactions and the density of D-matter in the early Universe. |
id | cern-2643826 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2018 |
record_format | invenio |
spelling | cern-26438262023-03-14T16:52:02Zdoi:10.1103/PhysRevD.99.015031http://cds.cern.ch/record/2643826engEllis, JohnMavromatos, Nick E.Nanopoulos, Dimitri V.Constraining D-foam via the 21-cm Linehep-thParticle Physics - Theoryastro-ph.COAstrophysics and Astronomygr-qcGeneral Relativity and Cosmologyhep-phParticle Physics - PhenomenologyWe have suggested earlier that D-particles, which are stringy space-time defects predicted in brane-inspired models of the Universe, might constitute a component of dark matter, and that they might contribute to the masses of singlet fermions that could provide another component. Interactions of the quantum-fluctuating D-particles with matter induce vector forces that are mediated by a massless effective U(1) gauge field, the “D-photon,” which is distinct from the ordinary photon and has different properties from dark photons. We discuss the form of interactions of D-matter with conventional matter induced by D-photon exchange and calculate their strength, which depends on the density of D-particles. Observations of the hydrogen 21 cm line at redshifts ≳15 can constrain these interactions and the density of D-matter in the early Universe.We have suggested earlier that D-particles, which are stringy space-time defects predicted in brane-inspired models of the Universe, might constitute a component of dark matter, and that they might contribute to the masses of singlet fermions that could provide another component. Interactions of the quantum-fluctuating D-particles with matter induce vector forces that are mediated by a massless effective U(1) gauge field, the "D-photon", which is distinct from the ordinary photon and has different properties from dark photons. We discuss the form of interactions of D-matter with conventional matter induced by D-photon exchange and calculate their strength, which depends on the density of D-particles. Observations of the hydrogen 21~cm line at redshifts >= 15 can constrain these interactions and the density of D-matter in the early Universe.arXiv:1810.05393CERN-TH-2018-217KCL-PH-TH-2018-45ACT-03-18CERN-TH-2018-217,KCL-PH-TH/2018-45,ACT-03-18MI-TH-18-183oai:cds.cern.ch:26438262018-10-12 |
spellingShingle | hep-th Particle Physics - Theory astro-ph.CO Astrophysics and Astronomy gr-qc General Relativity and Cosmology hep-ph Particle Physics - Phenomenology Ellis, John Mavromatos, Nick E. Nanopoulos, Dimitri V. Constraining D-foam via the 21-cm Line |
title | Constraining D-foam via the 21-cm Line |
title_full | Constraining D-foam via the 21-cm Line |
title_fullStr | Constraining D-foam via the 21-cm Line |
title_full_unstemmed | Constraining D-foam via the 21-cm Line |
title_short | Constraining D-foam via the 21-cm Line |
title_sort | constraining d-foam via the 21-cm line |
topic | hep-th Particle Physics - Theory astro-ph.CO Astrophysics and Astronomy gr-qc General Relativity and Cosmology hep-ph Particle Physics - Phenomenology |
url | https://dx.doi.org/10.1103/PhysRevD.99.015031 http://cds.cern.ch/record/2643826 |
work_keys_str_mv | AT ellisjohn constrainingdfoamviathe21cmline AT mavromatosnicke constrainingdfoamviathe21cmline AT nanopoulosdimitriv constrainingdfoamviathe21cmline |