Results 31 to 40 of about 9,449,404 (314)
Brief Review on Scalar Field Dark Matter Models
Frontiers in Astronomy and Space Sciences, 2019 The existence of dark matter in the Universe has been solidly established in the last decades, after the arrival of accurate cosmological and astrophysical observations, and some consider it the most challenging problem in modern physics.
L. Ureña‐López
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Positivity bounds for scalar field theories [PDF]
, 2017 Assuming the existence of a local, analytic, unitary UV completion in a Poincar\'{e} invariant scalar field theory with a mass gap, we derive an infinite number of positivity requirements using the known properties of the amplitude at and away from the ...
C. Rham +3 more
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Scalar field dark matter and the Higgs field
Physics Letters B, 2016 We discuss the possibility that dark matter corresponds to an oscillating scalar field coupled to the Higgs boson. We argue that the initial field amplitude should generically be of the order of the Hubble parameter during inflation, as a result of its ...
O. Bertolami +2 more
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Searching for an Oscillating Massive Scalar Field as a Dark Matter Candidate Using Atomic Hyperfine Frequency Comparisons. [PDF]
Physical Review Letters, 2016 We use 6 yrs of accurate hyperfine frequency comparison data of the dual rubidium and caesium cold atom fountain FO2 at LNE-SYRTE to search for a massive scalar dark matter candidate.
A. Hees +5 more
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Entanglement growth after a global quench in free scalar field theory [PDF]
Journal of High Energy Physics, 2016 We compute the entanglement and Rényi entropy growth after a global quench in various dimensions in free scalar field theory. We study two types of quenches: a boundary state quench and a global mass quench.
Jordan S. Cotler +3 more
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Topological and Non-Topological Solitons in Scalar Field Theories
, 2018 Solitons emerge in various nonlinear systems – from nonlinear optics and condensed matter to nuclear physics, cosmology, and supersymmetric theories – as stable, localized configurations behaving in many ways like particles.
semanticscholar +1 more source
Group field theory for quantum gravity minimally coupled to a scalar field [PDF]
, 2017 We construct a group field theory model for quantum gravity minimally coupled to relativistic scalar fields, defining as well a corresponding discrete gravity path integral (and, implicitly, a coupled spin foam model) in its Feynman expansion.
Yang Li, D. Oriti, Mingyi Zhang
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Shadow Images of a Rotating Dyonic Black Hole with a Global Monopole Surrounded by Perfect Fluid
Universe, 2020 In this paper, we revisit the rotating global monopole metric and extend the metric to a rotating dyonic global monopole in the presence of a perfect fluid. We then show that the surface topology at the event horizon, related to the metric computed, is a
Sumarna Haroon +2 more
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R2 quantum corrected scalar field inflation
Nuclear Physics B, 2022 String theory enjoys an elevated role among quantum gravity theories, since it seems to be the most consistent UV completion of general relativity and the Standard Model.
V.K. Oikonomou, Ifigeneia Giannakoudi
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Collapse of an axion scalar field
European Physical Journal C: Particles and Fields, 2021 The manuscript deals with an interacting scalar field that mimics the evolution of the so-called axion scalar dark matter or axion like particles with ultra-light masses.
Soumya Chakrabarti
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