Search Results - "Obied, Georges"
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1
On the cosmological implications of the string Swampland
Published in Physics letters. B (01-09-2018)“…We study constraints imposed by two proposed string Swampland criteria on cosmology. These criteria involve an upper bound on the range traversed by scalar…”
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Journal Article -
2
Dark dimension gravitons as dark matter
Published in The journal of high energy physics (17-11-2023)“…A bstract We consider cosmological aspects of the Dark Dimension (a mesoscopic dimension of micron scale), which has recently been proposed as the unique…”
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Journal Article -
3
Dark energy and the refined de sitter conjecture
Published in The journal of high energy physics (01-06-2019)“…A bstract We revisit the phenomenology of quintessence models in light of the recently refined version of the de Sitter Swampland conjecture, which includes…”
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Journal Article -
4
Swampland bounds on dark sectors
Published in The journal of high energy physics (21-11-2022)“…A bstract We use Swampland principles to theoretically disfavor regions of the parameter space of dark matter and other darkly charged particles that may…”
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Journal Article -
5
Astrophysical constraints on decaying dark gravitons
Published in The journal of high energy physics (07-06-2024)“…A bstract In the dark dimension scenario, which predicts an extra dimension of micron scale, dark gravitons (KK modes) are a natural dark matter candidate. In…”
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Journal Article -
6
Towards a comprehensive picture of powerful quasars, their host galaxies and quasar winds at z ∼ 0.5
Published in Monthly notices of the Royal Astronomical Society (21-03-2016)“…Luminous type-2 quasars in which the glow from the central black hole is obscured by dust are ideal targets for studying their host galaxies and the quasars’…”
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7
Giant scattering cones in obscured quasars
Published in Monthly notices of the Royal Astronomical Society (01-03-2016)“…We analyse Hubble Space Telescope observations of scattering regions in 20 luminous obscured quasars at 0.24 < z < 0.65 (11 new observations and nine archival…”
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8
String Theory and Its Applications in Cosmology and Particle Physics
Published 01-01-2022“…Finding experimental signatures of string theory is a central problem in modern physics. Recently, this problem has been revived in the context of the…”
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Dissertation -
9
On the cosmological implications of the string Swampland
Published in Physics letters. B (01-09-2018)“…Not provided…”
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Journal Article -
10
A Tale of Two $U(1)$'s: Kinetic Mixing from Lattice WGC States
Published 14-09-2021“…We point out that the states required by the Lattice Weak Gravity Conjecture, along with certain genericity conditions, imply the existence of non-vanishing…”
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Journal Article -
11
Chern-Simons bubbles: Lopsided false vacuum decay in axion electrodynamics
Published 31-01-2024“…We study axion electrodynamics, including the Chern-Simons interaction term, in the presence of parallel background electric and magnetic fields, as can for…”
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Journal Article -
12
Chern-Simons Induced Thermal Friction on Axion Domain Walls
Published 25-10-2024“…We study the dynamics and interactions of the solitonic domain walls that occur in realistic axion electrodynamics models including the Chern-Simons…”
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Journal Article -
13
Swampland Bounds on Dark Sectors
Published 19-07-2022“…We use Swampland principles to theoretically disfavor regions of the parameter space of dark matter and other darkly charged particles that may exist. The…”
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Journal Article -
14
Dark Dimension and Decaying Dark Matter Gravitons
Published 09-11-2023“…We explore the cosmology of the Dark Dimension scenario taking into account perturbations in the linear regime. In the context of the Dark Dimension scenario,…”
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Journal Article -
15
Dark Energy and the Refined de Sitter Conjecture
Published 01-11-2018“…We revisit the phenomenology of quintessence models in light of the recently refined version of the de Sitter Swampland conjecture, which includes the…”
Get full text
Journal Article -
16
Dark Dimension Gravitons as Dark Matter
Published 19-09-2022“…We consider cosmological aspects of the Dark Dimension (a mesoscopic dimension of micron scale), which has recently been proposed as the unique corner of the…”
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Journal Article -
17
Astrophysical Constraints on Decaying Dark Gravitons
Published 20-07-2023“…In the dark dimension scenario, which predicts an extra dimension of micron scale, dark gravitons (KK modes) are a natural dark matter candidate. In this…”
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Journal Article -
18
H_0$ Tension, Swampland Conjectures and the Epoch of Fading Dark Matter
Published 19-06-2019“…Phys. Rev. D 103, 043523 (2021) Motivated by the swampland dS conjecture, we consider a rolling scalar field as the source of dark energy. Furthermore, the…”
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Journal Article -
19
Topological Gravity as the Early Phase of Our Universe
Published 21-09-2020“…Motivated by string dualities we propose topological gravity as the early phase of our universe. The topological nature of this phase naturally leads to the…”
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Journal Article -
20
On the Cosmological Implications of the String Swampland
Published 19-07-2018“…We study constraints imposed by two proposed string Swampland criteria on cosmology. These criteria involve an upper bound on the range traversed by scalar…”
Get full text
Journal Article